CN114410312B - Soil acid regulator and preparation process thereof - Google Patents
Soil acid regulator and preparation process thereof Download PDFInfo
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- CN114410312B CN114410312B CN202210236383.7A CN202210236383A CN114410312B CN 114410312 B CN114410312 B CN 114410312B CN 202210236383 A CN202210236383 A CN 202210236383A CN 114410312 B CN114410312 B CN 114410312B
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- 239000002689 soil Substances 0.000 title claims abstract description 102
- 239000002253 acid Substances 0.000 title claims abstract description 90
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 210
- 238000002156 mixing Methods 0.000 claims abstract description 127
- 239000000463 material Substances 0.000 claims abstract description 70
- 239000000843 powder Substances 0.000 claims abstract description 63
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims abstract description 52
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims abstract description 52
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000004202 carbamide Substances 0.000 claims abstract description 41
- 229910000514 dolomite Inorganic materials 0.000 claims abstract description 38
- 239000010459 dolomite Substances 0.000 claims abstract description 38
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 26
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims abstract description 26
- 235000011130 ammonium sulphate Nutrition 0.000 claims abstract description 26
- 229910021538 borax Inorganic materials 0.000 claims abstract description 26
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims abstract description 26
- 235000019341 magnesium sulphate Nutrition 0.000 claims abstract description 26
- 239000011591 potassium Substances 0.000 claims abstract description 26
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 26
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 26
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 26
- 235000005074 zinc chloride Nutrition 0.000 claims abstract description 26
- 239000011592 zinc chloride Substances 0.000 claims abstract description 26
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims abstract description 26
- 229960001763 zinc sulfate Drugs 0.000 claims abstract description 26
- 229910000368 zinc sulfate Inorganic materials 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 24
- 239000002131 composite material Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 238000005507 spraying Methods 0.000 claims abstract description 18
- 238000005469 granulation Methods 0.000 claims abstract description 17
- 230000003179 granulation Effects 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims description 101
- 230000007246 mechanism Effects 0.000 claims description 89
- 238000010438 heat treatment Methods 0.000 claims description 76
- 230000007306 turnover Effects 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 229910001868 water Inorganic materials 0.000 claims description 27
- 239000008187 granular material Substances 0.000 claims description 26
- 239000002002 slurry Substances 0.000 claims description 26
- 239000003337 fertilizer Substances 0.000 claims description 21
- 239000011259 mixed solution Substances 0.000 claims description 21
- 238000007790 scraping Methods 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 18
- 239000003516 soil conditioner Substances 0.000 claims description 13
- 230000000903 blocking effect Effects 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 235000013877 carbamide Nutrition 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- IPCXNCATNBAPKW-UHFFFAOYSA-N zinc;hydrate Chemical compound O.[Zn] IPCXNCATNBAPKW-UHFFFAOYSA-N 0.000 claims description 7
- 238000001354 calcination Methods 0.000 claims description 6
- 230000003750 conditioning effect Effects 0.000 claims description 6
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 26
- 230000000694 effects Effects 0.000 abstract description 19
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 description 9
- 239000002245 particle Substances 0.000 description 7
- 235000013339 cereals Nutrition 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 5
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a soil acid regulator, belongs to the technical field of soil improvement, and solves the technical problem that the existing soil acid regulator is poor in acid regulating effect. The material is prepared from the following raw materials in parts by weight: 10-90 parts of urea, 4.5-5.5 parts of borax, 4.5-5.5 parts of zinc sulfate, 5-60 parts of zinc chloride, 5-30 parts of potassium fulvate, 35-85 parts of calcined dolomite powder obtained in the step one, 0-50 parts of ammonium sulfate and 1-20 parts of magnesium sulfate. The invention provides a preparation process of a soil acid regulator, which adopts a composite stirring device for stirring and mixing production, has good spraying granulation effect when preparing the soil acid regulator, and is not fragile after being dried; the production time is long; the unit power consumption is low; the prepared soil acid regulator has scientific and reasonable raw material collocation, obvious soil acid regulating effect and special effect on economic crops.
Description
Technical Field
The invention belongs to the technical field of soil improvement, and relates to a soil acid regulator, in particular to a preparation process of the soil acid regulator.
Background
Due to the combined action of the growth genetic characteristics of crops and the soil environment, each crop has an optimal soil acidity range. For example, rice crops generally adopt a dry seedling raising technology, seedling growth is facilitated when seedling bed soil is acidic, and at present, a considerable part of soil in a rice area is neutral or alkaline, so that acid regulation of seedling bed soil like acidic soil of rice becomes a key technology for crop cultivation, and if the pH of soil can be improved, the quality and yield of crops can be greatly improved, and huge economic benefits are generated. At present, widely used acid regulating substances are sulfuric acid, sulfur, ferrous sulfate, acetic acid and the like, the acid regulating substances cannot keep stable for regulating acidity of soil, the pH value of the soil is unstable, the acid regulating substances need to be repeatedly used for a long time, antagonism can be generated with the soil, hardening and hardening of the soil are caused, organic matters are reduced, soil fertility is reduced, the overall quality level of seedlings is seriously influenced, and poor crop growth, quality and yield are reduced. Most of the soil also lacks medium elements such as calcium and magnesium, and organic matters and carbon nutrition of the planting soil are lacking, so that the growth of crops is affected.
However, the raw materials of the existing soil acid regulator are not scientific and reasonable, the soil acid regulating and improving effects of the soil acid regulator are poor, the stirring device used in the existing preparation process of the soil acid regulator is independent in structure, has no linkage effect, is short in production period and high in unit power consumption, the spraying granulation effect is poor when the soil acid regulator is prepared, and particles are fragile after being dried.
Through searching, for example, chinese patent literature discloses a soil conditioner and a preparation method thereof [ application number: CN202110371931.2; publication No.: CN113149789a ]. The soil conditioner is prepared by alternately layering soil conditioner materials and leaf conditioner residues into a fermentation pile and fermenting. Firstly, respectively preparing a soil conditioner material and a leaf surface conditioner, vacuum-filtering a leaf surface conditioner fermentation liquid to obtain leaf surface conditioner residues, and then stacking the soil conditioner material and the leaf surface conditioner residues layer by layer according to a proportion, and fermenting to obtain a finished product. The prepared soil conditioner can be used as a conditioner for reducing cadmium in rice and can replace chemical fertilizer to be used as a soil conditioner of base fertilizer, although the fertilizer application is reduced, the utilization efficiency of soil is increased, the raw material sources of the soil conditioner are environment-friendly, the cost is low, but the acid regulating and improving effects of the soil are poor, and the stirring device used in the preparation process is independent in structure, free of linkage effect, short in production period, high in unit power consumption, poor in spraying and granulating effects when preparing the acid regulator of the soil, and fragile after the particles are dried.
Based on the above, we propose a soil acid regulator and a preparation process thereof, the raw materials are scientifically and reasonably matched, a composite stirring device is adopted for mixed production, the spraying granulation effect is good when the soil acid regulator is prepared, and particles are not fragile after being dried; the production time is long; the unit power consumption is low; the soil acid regulating agent has obvious soil acid regulating effect and special effect on economic crops.
Disclosure of Invention
The first object of the present invention is to solve the above problems in the prior art, and provide a preparation process of a soil acid regulator, where the preparation process aims to solve the technical problems: how to ensure the rapid mixing and stirring of the raw materials, the slurry spraying granulation effect is better when the soil acid regulator is prepared, and the production time is long; the unit power consumption is low.
The first object of the present invention can be achieved by the following technical scheme:
a preparation process of a soil acid regulator comprises the following steps:
calcining dolomite at a low temperature of 660-760 ℃, and cooling and crushing to obtain calcined dolomite powder;
respectively mixing a certain amount of urea, borax, zinc sulfate and water, heating to 50-95 ℃ while stirring, and fully dissolving to obtain a mixed solution;
respectively taking a certain amount of zinc chloride, potassium fulvate, the calcined dolomite powder obtained in the first step, urea, ammonium sulfate and magnesium sulfate, sequentially adding and mixing according to the sequence, and uniformly stirring to obtain a mixture;
step four, adding the mixture obtained in the step three into the mixed solution obtained in the step two to form slurry;
injecting the slurry obtained in the step four into a granulator for spraying granulation, and forming granular materials by the reserved solid which is not gasified after the water in the slurry is gasified and separated;
step six, conveying the granular materials into a dryer for drying, removing water, controlling the temperature of the dryer to be 280-450 ℃, and then cooling to below 45 ℃;
step seven, conveying the cooled granular materials into a separation sieve for screening to obtain soil acid regulator fertilizer granules with the grain diameter of 1.0-4.75 mm;
and step eight, returning and dissolving the soil acid regulator fertilizer which does not meet the standard, granulating again, placing the soil acid regulator fertilizer which meets the standard at the temperature of 35 ℃ for conditioning, and finally packaging according to different metering standards.
In the second step, the following components are in parts by weight: urea 5-50 parts, borax 4.5-5.5 parts, zinc sulfate 4.5-5.5 parts, water 35-45 parts (the weight of each part is the same).
As still further aspects of the invention: in the second step, the following components are in parts by weight: 25 parts of urea, 5 parts of borax, 5 parts of zinc sulfate and 30 parts of water (the weight of each part is the same).
In the third step, the following components are in parts by weight: 5-60 parts of zinc chloride, 5-30 parts of potassium fulvate, 35-85 parts of calcined dolomite powder obtained in the step one, 5-40 parts of urea, 0-50 parts of ammonium sulfate and 1-20 parts of magnesium sulfate (the weight of each part is the same).
As still further aspects of the invention: in the third step, the following components are in parts by weight: 30 parts of zinc chloride, 20 parts of potassium fulvate, 55 parts of calcined dolomite powder obtained in the step one, 25 parts of urea, 25 parts of ammonium sulfate and 10 parts of magnesium sulfate (the weight of each part is the same).
The stirring equipment used in the second to fourth steps is a compound stirring device, the compound stirring device comprises a power mixing mechanism, a heating stirring tank and a powder mixing mechanism which are sequentially arranged from bottom to top, two symmetrical quantitative discharging mechanisms are arranged on the power mixing mechanism, a plurality of reinforcing ribs are arranged between the two quantitative discharging mechanisms and the heating stirring tank, the powder mixing mechanism and the heating stirring tank are respectively connected with the two quantitative discharging mechanisms through a discharging pipe and a discharging pipe, and a differential connecting shaft is arranged between the powder mixing mechanism and the heating stirring tank and between the heating stirring tank and the power mixing mechanism.
The power mixing mechanism comprises a mixing base, a motor, a speed reducer and a discharging assembly are fixed inside the mixing base, the motor is in transmission connection with the speed reducer, a stirring frame is rotated in the middle of the upper end of the mixing base and is in transmission connection with the speed reducer, an electric stirring frame and a plurality of scraping frames are arranged on the stirring frame, a mixing cylinder is arranged at the upper end of the mixing base, the stirring frame, the scraping frames and the electric stirring frames are all positioned inside the mixing cylinder, a discharging hole is formed in the mixing base, the discharging assembly is positioned under the discharging hole, and a heat insulation cotton layer is arranged on the outer wall of the mixing cylinder;
the discharging assembly comprises a discharging barrel, wherein a turning rod and an electric push rod are hinged to the discharging barrel, the end part of the electric push rod is hinged to the end part of the turning rod, a plurality of connecting rods are fixed on the turning rod, turning blocking plates are fixed at the upper ends of the connecting rods, and the turning blocking plates are located under the discharging holes;
the differential connecting shaft is connected between a rotating shaft of the heating stirring tank and the rotating stirring frame, a plurality of circumferentially uniformly distributed supporting legs are fixed at the lower end of the heating stirring tank, the supporting legs are fixed at the upper end of the mixing base, a drain pipe is further arranged at the lower end of the heating stirring tank, an electric control valve is connected on the drain pipe, and a plurality of first feeding pipes are arranged at the upper end of the heating stirring tank;
the powder mixing mechanism comprises a stirring tank, wherein the lower end of the stirring tank is provided with a plurality of support rods uniformly distributed on the circumference, the support rods are fixed on the heating stirring tank, the lower end of the stirring tank is provided with a discharge hole, the upper end of a discharge pipe is connected to the lower end of the discharge hole, an electric control valve is arranged on the discharge pipe, a differential connecting shaft is connected between a rotating shaft of the stirring tank and the rotating shaft of the heating stirring tank, a plurality of scraping plates, a distributing hole tray and a distributing spiral pipe uniformly distributed on the circumference are sequentially arranged on the rotating shaft of the stirring tank from bottom to top, a distributing cylinder is arranged on the stirring tank, the distributing spiral pipe is positioned in the distributing cylinder, the upper end of the distributing cylinder is provided with a second feeding pipe, and a distributing hopper is arranged on the second feeding pipe;
the quantitative discharging mechanism comprises a mounting plate, the mounting plate is fixed on a mixing drum, the lower end of a reinforcing rib is fixed on the mounting plate, a material measuring box and a pneumatic push rod are fixed on the mounting plate, the end parts of the pneumatic push rod are connected with the material measuring box, the material measuring box is respectively connected with the lower ends of a material discharging pipe and a material discharging pipe, a turnover connecting rod is hinged on the mounting plate, the end parts of the turnover connecting rods are hinged on an inner blade wheel shaft of the material measuring box, a material discharging air valve is arranged at the material discharging end of the material measuring box, and the material discharging end of the material discharging air valve is connected on the mixing drum through a pipeline.
The second object of the present invention is to solve the above problems in the prior art, and to provide a soil acid regulator, which aims to solve the technical problems: how to ensure that the raw materials of the soil acid regulator are scientifically and reasonably matched, and the soil acid regulating effect of the soil acid regulator is obvious.
The second object of the present invention can be achieved by the following technical scheme:
the soil acid regulator is prepared from the following raw materials in parts by weight: 10-90 parts of urea, 4.5-5.5 parts of borax, 4.5-5.5 parts of zinc sulfate, 5-60 parts of zinc chloride, 5-30 parts of potassium fulvate, 35-85 parts of calcined dolomite powder obtained in the step one, 0-50 parts of ammonium sulfate and 1-20 parts of magnesium sulfate (the weight of each part is the same).
As a further scheme of the invention: the soil acid regulator is prepared from the following raw materials in parts by weight: 15-85 parts of urea, 4.8-5.2 parts of borax, 4.7-5.1 parts of zinc sulfate, 15-50 parts of zinc chloride, 10-20 parts of potassium fulvate, 55-75 parts of calcined dolomite powder obtained in the step one, 5-45 parts of ammonium sulfate and 5-15 parts of magnesium sulfate (the weight of each part is the same).
As still further aspects of the invention: the soil acid regulator is prepared from the following raw materials in parts by weight: 55 parts of urea, 4.9 parts of borax, 4.9 parts of zinc sulfate, 35 parts of zinc chloride, 15 parts of potassium fulvate, 65 parts of calcined dolomite powder obtained in the step one, 30 parts of ammonium sulfate and 12 parts of magnesium sulfate (the weight of each part is the same).
Compared with the prior art, the soil acid regulator and the preparation process thereof have the following advantages:
the invention has scientific and reasonable raw material collocation, adopts a composite stirring device for mixed production, has better spraying granulation effect when preparing the soil acid regulator, and is not fragile after the particles are dried; the production time is long; the unit power consumption is low; the soil acid regulating agent has obvious soil acid regulating effect and special effect on economic crops.
The composite stirring device has compact structure, realizes one power and three different output speeds, and the powder mixing mechanism uniformly blanking and rapidly stirring; heating agitator tank constant temperature stirring guarantees temperature stability, and powder mixing mechanism and heating agitator tank and power compounding mechanism and differential connecting axle cooperation, simultaneously the rotation stirring of different speeds, and the inside stirring of power compounding mechanism is annotated by ration blowing mechanism ration to the short distance immediately after the heating agitator tank stirring, avoids mixed solution temperature to scatter and disappear, guarantees to mix stably, and stirring misce bene improves compounding efficiency.
Drawings
FIG. 1 is a flow chart of a preparation process of the soil acid regulator.
FIG. 2 is a schematic diagram of a soil conditioner according to the present invention.
FIG. 3 is a schematic front view of a composite stirring device according to the present invention.
FIG. 4 is a schematic perspective view of a composite stirring device according to the present invention.
FIG. 5 is a schematic perspective view of a powder mixing mechanism of a composite stirring device according to the present invention.
FIG. 6 is a schematic perspective view of a heating and stirring tank of the composite stirring device of the present invention.
FIG. 7 is a schematic view showing the structure of the upper side of the dynamic mixing mechanism of the composite stirring device of the present invention.
FIG. 8 is a schematic view showing the structure of the lower side of the dynamic mixing mechanism of the composite stirring device in the present invention.
Fig. 9 is a schematic perspective view of a quantitative discharging mechanism in the present invention.
In the figure, 1, a powder mixing mechanism; 2. an electric control valve; 3. a discharge tube; 4. heating the stirring tank; 5. reinforcing ribs; 6. a quantitative discharging mechanism; 7. a power mixing mechanism; 8. a differential connecting shaft; 9. a first feed tube; 10. a second feed tube; 11. a proportioning hopper; 12. a material distributing cylinder; 13. a material separating spiral pipe; 14. a distributing hole tray; 15. a scraping plate; 16. a discharge port; 17. a support rod; 18. a discharge pipe; 19. a blow-down pipe; 20. support legs; 21. a mixing cylinder; 22. a stirring rack; 23. a scraping frame; 24. a blanking hole; 25. a discharge assembly; 26. a mixing base; 27. an electric stirring frame; 28. a motor; 29. a speed reducer; 30. a connecting rod; 31. turning over the rod; 32. an electric push rod; 33. turning over the blocking plate; 34. a quantitative feed box; 35. a discharge air valve; 36. turning over the connecting rod; 37. and a pneumatic push rod.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Example 1
As shown in fig. 1, a preparation process of the soil acid regulator comprises the following steps:
calcining dolomite at a low temperature of 660-760 ℃, and cooling and crushing to obtain calcined dolomite powder;
respectively mixing a certain amount of urea, borax, zinc sulfate and water, heating to 50-95 ℃ while stirring, and fully dissolving to obtain a mixed solution;
respectively taking a certain amount of zinc chloride, potassium fulvate, the calcined dolomite powder obtained in the first step, urea, ammonium sulfate and magnesium sulfate, sequentially adding and mixing according to the sequence, and uniformly stirring to obtain a mixture;
step four, adding the mixture obtained in the step three into the mixed solution obtained in the step two to form slurry;
injecting the slurry obtained in the step four into a granulator for spraying granulation, and forming granular materials by the reserved solid which is not gasified after the water in the slurry is gasified and separated;
step six, conveying the granular materials into a dryer for drying, removing water, controlling the temperature of the dryer to be 280-450 ℃, and then cooling to below 45 ℃;
step seven, conveying the cooled granular materials into a separation sieve for screening to obtain soil acid regulator fertilizer granules with the grain diameter of 1.0-4.75 mm;
and step eight, returning and dissolving the soil acid regulator fertilizer which does not meet the standard, granulating again, placing the soil acid regulator fertilizer which meets the standard at the temperature of 35 ℃ for conditioning, and finally packaging according to different metering standards.
In the second step, the weight parts of the components are as follows: 25 parts of urea, 5 parts of borax, 5 parts of zinc sulfate and 30 parts of water (the weight of each part is the same).
In the third step, the weight parts of the components are as follows: 30 parts of zinc chloride, 20 parts of potassium fulvate, 55 parts of calcined dolomite powder obtained in the step one, 25 parts of urea, 25 parts of ammonium sulfate and 10 parts of magnesium sulfate (the weight of each part is the same).
The stirring equipment used in the second to fourth steps is the existing stirring device, namely, the second to fourth steps are required to adopt a plurality of stirring devices, namely, the stirring devices with three mutually independent stirring devices and same or different specifications are adopted to stir, the stirring devices (the model of which is DSHL conical spiral mixer manufactured by Shanghai De Yue powder machinery Co., ltd., such as a stirring mechanism with the application number of CN201820767266.2 and a stirrer with the stirring mechanism) are mutually independent, the connectivity is lacking, at the moment, the mixed solution in the second step is stirred and then cooled, and then the mixed solution is injected into the fourth step, and in the fourth step, the temperature of 50-95 ℃ cannot be guaranteed when the mixed material formed in the third step is stirred and mixed, the mixed effect is influenced, and meanwhile, the stirring devices with three different stirring devices are adopted to stir in the production mode of the flow production line, the process is long, the energy consumption is high, and the production requirement of the soil acid regulator is not benefited.
As shown in fig. 2, the soil acid regulator is prepared from the following raw materials in parts by weight: 50 parts of urea, 5 parts of borax, 5 parts of zinc sulfate, 30 parts of zinc chloride, 15 parts of potassium fulvate, 55 parts of calcined dolomite powder obtained in the step one, 25 parts of ammonium sulfate and 10 parts of magnesium sulfate (the weight of each part is the same).
Example 2
A preparation process of a soil acid regulator comprises the following steps:
calcining dolomite at a low temperature of 660-760 ℃, and cooling and crushing to obtain calcined dolomite powder;
respectively mixing a certain amount of urea, borax, zinc sulfate and water, heating to 50-95 ℃ while stirring, and fully dissolving to obtain a mixed solution;
respectively taking a certain amount of zinc chloride, potassium fulvate, the calcined dolomite powder obtained in the first step, urea, ammonium sulfate and magnesium sulfate, sequentially adding and mixing according to the sequence, and uniformly stirring to obtain a mixture;
step four, adding the mixture obtained in the step three into the mixed solution obtained in the step two to form slurry;
injecting the slurry obtained in the step four into a granulator for spraying granulation, and forming granular materials by the reserved solid which is not gasified after the water in the slurry is gasified and separated;
step six, conveying the granular materials into a dryer for drying, removing water, controlling the temperature of the dryer to be 280-450 ℃, and then cooling to below 45 ℃;
step seven, conveying the cooled granular materials into a separation sieve for screening to obtain soil acid regulator fertilizer granules with the grain diameter of 1.0-4.75 mm;
and step eight, returning and dissolving the soil acid regulator fertilizer which does not meet the standard, granulating again, placing the soil acid regulator fertilizer which meets the standard at the temperature of 35 ℃ for conditioning, and finally packaging according to different metering standards.
In the second step, the weight parts of the components are as follows: 25 parts of urea, 5 parts of borax, 5 parts of zinc sulfate and 30 parts of water (the weight of each part is the same).
In the third step, the weight parts of the components are as follows: 30 parts of zinc chloride, 20 parts of potassium fulvate, 55 parts of calcined dolomite powder obtained in the step one, 25 parts of urea, 25 parts of ammonium sulfate and 10 parts of magnesium sulfate (the weight of each part is the same).
As shown in fig. 3-9, the stirring equipment used in the second to fourth steps is a composite stirring device, the composite stirring device comprises a power mixing mechanism 7, a heating stirring tank 4 and a powder mixing mechanism 1 which are sequentially arranged from bottom to top, two symmetrical quantitative discharging mechanisms 6 are arranged on the power mixing mechanism 7, a plurality of reinforcing ribs 5 are arranged between the two quantitative discharging mechanisms 6 and the heating stirring tank 4, the powder mixing mechanism 1 and the heating stirring tank 4 are respectively connected with the two quantitative discharging mechanisms 6 through a discharging pipe 3 and a discharging pipe 18, and a differential connecting shaft 8 is arranged between the powder mixing mechanism 1 and the heating stirring tank 4 and between the heating stirring tank 4 and the power mixing mechanism 7.
The power mixing mechanism 7 comprises a mixing base 26, a motor 28, a speed reducer 29 and a discharging assembly 25 are fixed in the mixing base 26, the motor 28 is in transmission connection with the speed reducer 29, a stirring frame 22 is rotated in the middle of the upper end of the mixing base 26, the stirring frame 22 is in transmission connection with the speed reducer 29, an electric stirring frame 27 and a plurality of scraping frames 23 are arranged on the stirring frame 22, a mixing barrel 21 is arranged at the upper end of the mixing base 26, the stirring frame 22, the scraping frames 23 and the electric stirring frame 27 are all positioned in the mixing barrel 21, a blanking hole 24 is formed in the mixing base 26, the discharging assembly 25 is positioned under the blanking hole 24, and a heat insulation cotton layer is arranged on the outer wall of the mixing barrel 21;
the discharging assembly 25 comprises a discharging barrel, a turnover rod 31 and an electric push rod 32 are hinged on the discharging barrel, the end part of the electric push rod 32 is hinged with the end part of the turnover rod 31, a plurality of connecting rods 30 are fixed on the turnover rod 31, turnover blocking plates 33 are fixed at the upper ends of the connecting rods 30, and the turnover blocking plates 33 are located under the discharging holes 24;
the differential connecting shaft 8 is connected between a rotating shaft of the heating stirring tank 4 and the rotating stirring frame 22, a plurality of circumferentially uniformly distributed supporting legs 20 are fixed at the lower end of the heating stirring tank 4, the supporting legs 20 are fixed at the upper end of a mixing base 26, a drain pipe 19 is further arranged at the lower end of the heating stirring tank 4, the discharge pipe 18 is connected with an electric control valve 2, and a plurality of first feeding pipes 9 are arranged at the upper end of the heating stirring tank 4;
the powder mixing mechanism 1 comprises a stirring tank, wherein the lower end of the stirring tank is provided with a plurality of support rods 17 uniformly distributed on the circumference, the support rods 17 are fixed on a heating stirring tank 4, the lower end of the stirring tank is provided with a discharge hole 16, the upper end of a discharge pipe 3 is connected to the lower end of the discharge hole 16, the discharge pipe 3 is provided with an electric control valve 2, a differential connecting shaft 8 is connected between a rotating shaft of the stirring tank and a rotating shaft of the heating stirring tank 4, the rotating shaft of the stirring tank is sequentially provided with a plurality of scraping plates 15, a distributing hole tray 14 and distributing spiral pipes 13 uniformly distributed on the circumference from bottom to top, the stirring tank is provided with a distributing cylinder 12, the distributing spiral pipes 13 are positioned in the distributing cylinder 12, the upper end of the distributing cylinder 12 is provided with a second feed pipe 10, and the second feed pipe 10 is provided with a distributing hopper 11;
the quantitative discharging mechanism 6 comprises a mounting plate, the mounting plate is fixed on the mixing drum 21, the lower end of the reinforcing rib 5 is fixed on the mounting plate, a material measuring box 34 and a pneumatic push rod 37 are fixed on the mounting plate, the end part of the pneumatic push rod 37 is connected with the material measuring box 34, the material measuring box 34 is respectively connected with the lower ends of the material discharging pipe 3 and the material discharging pipe 18, a turnover connecting rod 36 is hinged on the mounting plate, the end part of the turnover connecting rod 36 is hinged on an inner blade wheel shaft of the material measuring box 34, a material discharging air valve 35 is arranged at the material discharging end of the material measuring box 34, and the material discharging end of the material discharging air valve 35 is connected on the mixing drum 21 through a pipeline;
the transmission rotation speed of the two differential connecting shafts 8 is regulated, the rotation of the quantitative discharging mechanism 6 and the powder mixing mechanism 1 is met, the quantitative discharging mechanism and the rotation speed of the powder mixing mechanism 7 are not consistent, one power is met, three output speeds are met, a motor 28 drives a speed reducer 29 to rotate, the speed reducer drives a rotating stirring frame 22 to rotate, the rotating stirring frame 22 drives the differential connecting shafts 8 to rotate, thereby driving the rotating shafts of the heating stirring tank 4, the rotating shafts of the heating stirring tank 4 drive the differential connecting shafts 8 to rotate, the rotating shafts of the stirring tank are driven to rotate, materials are injected into the material distributing cylinder 12 through a material distributing hopper 11 and a second material feeding pipe 10, a certain amount of zinc chloride, potassium fulvate, and calcined dolomite powder, urea, ammonium sulfate and magnesium sulfate obtained in the first step are evenly distributed through a material distributing spiral pipe 13, and fall into the inside of the stirring tank through a material distributing hole disc 14, and the mixed powder is scraped by a scraping plate 15 to form a mixed material;
regulating the temperature of the heating stirring tank 4 to 50-95 ℃ to ensure constant-temperature stirring, injecting a certain amount of urea, borax, zinc sulfate and water into the heating stirring tank 4 through a plurality of first feeding pipes 9, and mixing and stirring to form a mixed solution;
the electric control valve 2 is opened, so that mixed materials and mixed solutions can fall into the metering box 34 of the quantitative discharging mechanism 6 through the discharging pipe 3 and the discharging pipe 18 respectively, the pneumatic push rod 37 pushes the material to be injected, the turning connecting rod 36 pushes the inner blade wheel shaft of the metering box 34 to rotate, the material to be discharged is discharged and discharged into a pipeline of the discharging air valve 35, the discharging air valve 35 injects air to inject the unit mixed materials and the unit mixed solutions into the mixing cylinder 21, the stirring frame 22 drives the scraping frame 23 and the electric stirring frame 27 to rotate, meanwhile, the electric stirring frame 27 can rotate, the mixed materials and the mixed solutions are fully formed into slurry, after stirring is completed, the electric push rod 32 pushes out, the turning rod 31 is driven to turn over, the connecting rod 30 is driven to turn over, the turning blocking plate 33 is driven to turn over, the stirred slurry is discharged out and injected into the granulator, and the subsequent slurry spraying granulation is carried out.
The composite stirring device has compact structure, realizes one power and three different output speeds, and the powder mixing mechanism uniformly blanking and rapidly stirring; heating agitator tank constant temperature stirring guarantees temperature stability, and powder mixing mechanism and heating agitator tank and power compounding mechanism stir simultaneously, and immediately short distance is stirred by ration blowing mechanism ration injection power compounding mechanism inside after the heating agitator tank stirs, avoids mixed solution temperature to scatter and disappear, guarantees to mix stably, and stirring misce bene improves compounding efficiency.
The soil acid regulator is prepared from the following raw materials in parts by weight: 50 parts of urea, 5 parts of borax, 5 parts of zinc sulfate, 30 parts of zinc chloride, 15 parts of potassium fulvate, 55 parts of calcined dolomite powder obtained in the step one, 25 parts of ammonium sulfate and 10 parts of magnesium sulfate (the weight of each part is the same).
Example 3
A preparation process of a soil acid regulator comprises the following steps:
calcining dolomite at a low temperature of 660-760 ℃, and cooling and crushing to obtain calcined dolomite powder;
respectively mixing a certain amount of urea, borax, zinc sulfate and water, heating to 50-95 ℃ while stirring, and fully dissolving to obtain a mixed solution;
respectively taking a certain amount of zinc chloride, potassium fulvate, the calcined dolomite powder obtained in the first step, urea, ammonium sulfate and magnesium sulfate, sequentially adding and mixing according to the sequence, and uniformly stirring to obtain a mixture;
step four, adding the mixture obtained in the step three into the mixed solution obtained in the step two to form slurry;
injecting the slurry obtained in the step four into a granulator for spraying granulation, and forming granular materials by the reserved solid which is not gasified after the water in the slurry is gasified and separated;
step six, conveying the granular materials into a dryer for drying, removing water, controlling the temperature of the dryer to be 280-450 ℃, and then cooling to below 45 ℃;
step seven, conveying the cooled granular materials into a separation sieve for screening to obtain soil acid regulator fertilizer granules with the grain diameter of 1.0-4.75 mm;
and step eight, returning and dissolving the soil acid regulator fertilizer which does not meet the standard, granulating again, placing the soil acid regulator fertilizer which meets the standard at the temperature of 35 ℃ for conditioning, and finally packaging according to different metering standards.
In the second step, the weight parts of the components are as follows: urea 50 parts, borax 4.5 parts, zinc sulfate 4.5 parts, and water 35 parts (each weight is the same).
In the third step, the weight parts of the components are as follows: 5 parts of zinc chloride, 5 parts of potassium fulvate, 35 parts of calcined dolomite powder obtained in the step one, 5 parts of urea, 1 part of ammonium sulfate and 1 part of magnesium sulfate (the weight of each part is the same).
As shown in fig. 3-9, the stirring equipment used in the second to fourth steps is a composite stirring device, the composite stirring device comprises a power mixing mechanism 7, a heating stirring tank 4 and a powder mixing mechanism 1 which are sequentially arranged from bottom to top, two symmetrical quantitative discharging mechanisms 6 are arranged on the power mixing mechanism 7, a plurality of reinforcing ribs 5 are arranged between the two quantitative discharging mechanisms 6 and the heating stirring tank 4, the powder mixing mechanism 1 and the heating stirring tank 4 are respectively connected with the two quantitative discharging mechanisms 6 through a discharging pipe 3 and a discharging pipe 18, and a differential connecting shaft 8 is arranged between the powder mixing mechanism 1 and the heating stirring tank 4 and between the heating stirring tank 4 and the power mixing mechanism 7.
The power mixing mechanism 7 comprises a mixing base 26, a motor 28, a speed reducer 29 and a discharging assembly 25 are fixed in the mixing base 26, the motor 28 is in transmission connection with the speed reducer 29, a stirring frame 22 is rotated in the middle of the upper end of the mixing base 26, the stirring frame 22 is in transmission connection with the speed reducer 29, an electric stirring frame 27 and a plurality of scraping frames 23 are arranged on the stirring frame 22, a mixing barrel 21 is arranged at the upper end of the mixing base 26, the stirring frame 22, the scraping frames 23 and the electric stirring frame 27 are all positioned in the mixing barrel 21, a blanking hole 24 is formed in the mixing base 26, the discharging assembly 25 is positioned under the blanking hole 24, and a heat insulation cotton layer is arranged on the outer wall of the mixing barrel 21;
the discharging assembly 25 comprises a discharging barrel, a turnover rod 31 and an electric push rod 32 are hinged on the discharging barrel, the end part of the electric push rod 32 is hinged with the end part of the turnover rod 31, a plurality of connecting rods 30 are fixed on the turnover rod 31, turnover blocking plates 33 are fixed at the upper ends of the connecting rods 30, and the turnover blocking plates 33 are located under the discharging holes 24;
the differential connecting shaft 8 is connected between a rotating shaft of the heating stirring tank 4 and the rotating stirring frame 22, a plurality of circumferentially uniformly distributed supporting legs 20 are fixed at the lower end of the heating stirring tank 4, the supporting legs 20 are fixed at the upper end of a mixing base 26, a drain pipe 19 is further arranged at the lower end of the heating stirring tank 4, the discharge pipe 18 is connected with an electric control valve 2, and a plurality of first feeding pipes 9 are arranged at the upper end of the heating stirring tank 4;
the powder mixing mechanism 1 comprises a stirring tank, wherein the lower end of the stirring tank is provided with a plurality of support rods 17 uniformly distributed on the circumference, the support rods 17 are fixed on a heating stirring tank 4, the lower end of the stirring tank is provided with a discharge hole 16, the upper end of a discharge pipe 3 is connected to the lower end of the discharge hole 16, the discharge pipe 3 is provided with an electric control valve 2, a differential connecting shaft 8 is connected between a rotating shaft of the stirring tank and a rotating shaft of the heating stirring tank 4, the rotating shaft of the stirring tank is sequentially provided with a plurality of scraping plates 15, a distributing hole tray 14 and distributing spiral pipes 13 uniformly distributed on the circumference from bottom to top, the stirring tank is provided with a distributing cylinder 12, the distributing spiral pipes 13 are positioned in the distributing cylinder 12, the upper end of the distributing cylinder 12 is provided with a second feed pipe 10, and the second feed pipe 10 is provided with a distributing hopper 11;
the quantitative discharging mechanism 6 comprises a mounting plate, the mounting plate is fixed on the mixing drum 21, the lower end of the reinforcing rib 5 is fixed on the mounting plate, a material measuring box 34 and a pneumatic push rod 37 are fixed on the mounting plate, the end part of the pneumatic push rod 37 is connected with the material measuring box 34, the material measuring box 34 is respectively connected with the lower ends of the material discharging pipe 3 and the material discharging pipe 18, a turnover connecting rod 36 is hinged on the mounting plate, the end part of the turnover connecting rod 36 is hinged on an inner blade wheel shaft of the material measuring box 34, a material discharging air valve 35 is arranged at the material discharging end of the material measuring box 34, and the material discharging end of the material discharging air valve 35 is connected on the mixing drum 21 through a pipeline.
The soil acid regulator is prepared from the following raw materials in parts by weight: 55 parts of urea, 4.5 parts of borax, 4.5 parts of zinc sulfate, 5 parts of zinc chloride, 5 parts of potassium fulvate, 35 parts of calcined dolomite powder obtained in the step one, 1 part of ammonium sulfate and 1 part of magnesium sulfate (the weight of each part is the same).
Example 4
A preparation process of a soil acid regulator comprises the following steps:
calcining dolomite at a low temperature of 660-760 ℃, and cooling and crushing to obtain calcined dolomite powder;
respectively mixing a certain amount of urea, borax, zinc sulfate and water, heating to 50-95 ℃ while stirring, and fully dissolving to obtain a mixed solution;
respectively taking a certain amount of zinc chloride, potassium fulvate, the calcined dolomite powder obtained in the first step, urea, ammonium sulfate and magnesium sulfate, sequentially adding and mixing according to the sequence, and uniformly stirring to obtain a mixture;
step four, adding the mixture obtained in the step three into the mixed solution obtained in the step two to form slurry;
injecting the slurry obtained in the step four into a granulator for spraying granulation, and forming granular materials by the reserved solid which is not gasified after the water in the slurry is gasified and separated;
step six, conveying the granular materials into a dryer for drying, removing water, controlling the temperature of the dryer to be 280-450 ℃, and then cooling to below 45 ℃;
step seven, conveying the cooled granular materials into a separation sieve for screening to obtain soil acid regulator fertilizer granules with the grain diameter of 1.0-4.75 mm;
and step eight, returning and dissolving the soil acid regulator fertilizer which does not meet the standard, granulating again, placing the soil acid regulator fertilizer which meets the standard at the temperature of 35 ℃ for conditioning, and finally packaging according to different metering standards.
In the second step, the weight parts of the components are as follows: urea 5 parts, borax 5.5 parts, zinc sulfate 5.5 parts, water 45 parts (the weight of each part is the same).
In the third step, the weight parts of the components are as follows: 60 parts of zinc chloride, 30 parts of potassium fulvate, 85 parts of calcined dolomite powder obtained in the step one, 40 parts of urea, 50 parts of ammonium sulfate and 20 parts of magnesium sulfate (the weight of each part is the same).
As shown in fig. 3-9, the stirring equipment used in the second to fourth steps is a composite stirring device, the composite stirring device comprises a power mixing mechanism 7, a heating stirring tank 4 and a powder mixing mechanism 1 which are sequentially arranged from bottom to top, two symmetrical quantitative discharging mechanisms 6 are arranged on the power mixing mechanism 7, a plurality of reinforcing ribs 5 are arranged between the two quantitative discharging mechanisms 6 and the heating stirring tank 4, the powder mixing mechanism 1 and the heating stirring tank 4 are respectively connected with the two quantitative discharging mechanisms 6 through a discharging pipe 3 and a discharging pipe 18, and a differential connecting shaft 8 is arranged between the powder mixing mechanism 1 and the heating stirring tank 4 and between the heating stirring tank 4 and the power mixing mechanism 7.
The power mixing mechanism 7 comprises a mixing base 26, a motor 28, a speed reducer 29 and a discharging assembly 25 are fixed in the mixing base 26, the motor 28 is in transmission connection with the speed reducer 29, a stirring frame 22 is rotated in the middle of the upper end of the mixing base 26, the stirring frame 22 is in transmission connection with the speed reducer 29, an electric stirring frame 27 and a plurality of scraping frames 23 are arranged on the stirring frame 22, a mixing barrel 21 is arranged at the upper end of the mixing base 26, the stirring frame 22, the scraping frames 23 and the electric stirring frame 27 are all positioned in the mixing barrel 21, a blanking hole 24 is formed in the mixing base 26, the discharging assembly 25 is positioned under the blanking hole 24, and a heat insulation cotton layer is arranged on the outer wall of the mixing barrel 21;
the discharging assembly 25 comprises a discharging barrel, a turnover rod 31 and an electric push rod 32 are hinged on the discharging barrel, the end part of the electric push rod 32 is hinged with the end part of the turnover rod 31, a plurality of connecting rods 30 are fixed on the turnover rod 31, turnover blocking plates 33 are fixed at the upper ends of the connecting rods 30, and the turnover blocking plates 33 are located under the discharging holes 24;
the differential connecting shaft 8 is connected between a rotating shaft of the heating stirring tank 4 and the rotating stirring frame 22, a plurality of circumferentially uniformly distributed supporting legs 20 are fixed at the lower end of the heating stirring tank 4, the supporting legs 20 are fixed at the upper end of a mixing base 26, a drain pipe 19 is further arranged at the lower end of the heating stirring tank 4, the discharge pipe 18 is connected with an electric control valve 2, and a plurality of first feeding pipes 9 are arranged at the upper end of the heating stirring tank 4;
the powder mixing mechanism 1 comprises a stirring tank, wherein the lower end of the stirring tank is provided with a plurality of support rods 17 uniformly distributed on the circumference, the support rods 17 are fixed on a heating stirring tank 4, the lower end of the stirring tank is provided with a discharge hole 16, the upper end of a discharge pipe 3 is connected to the lower end of the discharge hole 16, the discharge pipe 3 is provided with an electric control valve 2, a differential connecting shaft 8 is connected between a rotating shaft of the stirring tank and a rotating shaft of the heating stirring tank 4, the rotating shaft of the stirring tank is sequentially provided with a plurality of scraping plates 15, a distributing hole tray 14 and distributing spiral pipes 13 uniformly distributed on the circumference from bottom to top, the stirring tank is provided with a distributing cylinder 12, the distributing spiral pipes 13 are positioned in the distributing cylinder 12, the upper end of the distributing cylinder 12 is provided with a second feed pipe 10, and the second feed pipe 10 is provided with a distributing hopper 11;
the quantitative discharging mechanism 6 comprises a mounting plate, the mounting plate is fixed on the mixing drum 21, the lower end of the reinforcing rib 5 is fixed on the mounting plate, a material measuring box 34 and a pneumatic push rod 37 are fixed on the mounting plate, the end part of the pneumatic push rod 37 is connected with the material measuring box 34, the material measuring box 34 is respectively connected with the lower ends of the material discharging pipe 3 and the material discharging pipe 18, a turnover connecting rod 36 is hinged on the mounting plate, the end part of the turnover connecting rod 36 is hinged on an inner blade wheel shaft of the material measuring box 34, a material discharging air valve 35 is arranged at the material discharging end of the material measuring box 34, and the material discharging end of the material discharging air valve 35 is connected on the mixing drum 21 through a pipeline.
The soil acid regulator is prepared from the following raw materials in parts by weight: 45 parts of urea, 5.5 parts of borax, 5.5 parts of zinc sulfate, 60 parts of zinc chloride, 30 parts of potassium fulvate, 85 parts of calcined dolomite powder obtained in the step one, 50 parts of ammonium sulfate and 20 parts of magnesium sulfate (the weight of each part is the same).
The soil conditioner prepared in examples 1-4 was subjected to comparative experiments: wherein the comparison criteria: the slurry spraying granulation effect (whether the particles are fragile) of the soil acid regulator; production efficiency (throughput per unit time); the unit power consumption and the acid regulating degree of soil acid regulating (the same amount of soil acid regulating agent, the same area, the same time and the same area are used for soil acid regulating and detecting the acid regulating degree) are more visual. The experimental table is as follows (table 1):
TABLE 1
From the experimental data in table 1, it is clear that, unlike the stirring and mixing apparatus of the second to fourth steps, which are only prepared in example 1, the slurry spraying granulation effect is better in the preparation of the soil conditioner in example 2, and the granules are not fragile after drying; the production time is long; the unit power consumption is low; the soil acidity regulating effect of the soil acidity regulating agent is remarkable and substantially identical to that of example 1.
In the embodiment 3 and the embodiment 4, compared with the embodiment 2, the proportion of raw materials is different, equipment is used in the production steps, the slurry spraying granulation effect is common when the soil acid regulator is prepared in the embodiment 3, and the particles are not fragile after being dried; the production time is long; the unit power consumption is low; the soil acid regulating effect of the soil acid regulator is poor; example 4 the slurry spraying granulation effect is poor when preparing the soil acid regulator, and the granules are not fragile after being dried; the production time is long; the unit power consumption is low; the soil acid regulating agent has poor soil acid regulating effect.
The preparation process adopts the composite stirring device for mixed production, has better spraying granulation effect when preparing the soil acid regulator, and is not fragile after the particles are dried; the production time is long; the unit power consumption is low; the raw materials of the soil acid regulator are scientifically and reasonably matched, and the soil acid regulating effect is obvious;
the composite stirring device has compact structure, realizes one power and three different output speeds, and the powder mixing mechanism uniformly blanking and rapidly stirring; heating agitator tank constant temperature stirring guarantees temperature stability, and powder mixing mechanism and heating agitator tank and power compounding mechanism stir simultaneously, and immediately short distance is stirred by ration blowing mechanism ration injection power compounding mechanism inside after the heating agitator tank stirs, avoids mixed solution temperature to scatter and disappear, guarantees to mix stably, and stirring misce bene improves compounding efficiency.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The preparation process of the soil acid regulator is characterized by comprising the following steps:
calcining dolomite at a low temperature of 660-760 ℃, and cooling and crushing to obtain calcined dolomite powder;
respectively mixing a certain amount of urea, borax, zinc sulfate and water, heating to 50-95 ℃ while stirring, and fully dissolving to obtain a mixed solution;
respectively taking a certain amount of zinc chloride, potassium fulvate, the calcined dolomite powder obtained in the first step, urea, ammonium sulfate and magnesium sulfate, sequentially adding and mixing according to the sequence, and uniformly stirring to obtain a mixture;
step four, adding the mixture obtained in the step three into the mixed solution obtained in the step two to form slurry;
injecting the slurry obtained in the step four into a granulator for spraying granulation, and forming granular materials by the reserved solid which is not gasified after the water in the slurry is gasified and separated;
step six, conveying the granular materials into a dryer for drying, removing water, controlling the temperature of the dryer to be 280-450 ℃, and then cooling to below 45 ℃;
step seven, conveying the cooled granular materials into a separation sieve for screening to obtain soil acid regulator fertilizer granules with the grain diameter of 1.0-4.75 mm;
step eight, returning and dissolving the soil acid regulator fertilizer which does not meet the standard, granulating again, placing the soil acid regulator fertilizer which meets the standard at 35 ℃ for conditioning, and finally packaging according to different metering standards;
the stirring equipment used in the second to fourth steps is a composite stirring device, the composite stirring device comprises a power mixing mechanism (7), a heating stirring tank (4) and a powder mixing mechanism (1) which are sequentially arranged from bottom to top, two symmetrical quantitative discharging mechanisms (6) are arranged on the power mixing mechanism (7), a plurality of reinforcing ribs (5) are arranged between the two quantitative discharging mechanisms (6) and the heating stirring tank (4), the powder mixing mechanism (1) and the heating stirring tank (4) are respectively connected with the two quantitative discharging mechanisms (6) through a discharging pipe (3) and a discharging pipe (18), and a differential connecting shaft (8) is arranged between the powder mixing mechanism (1) and the heating stirring tank (4) and between the heating stirring tank (4) and the power mixing mechanism (7);
the power mixing mechanism (7) comprises a mixing base (26), a motor (28) and a speed reducer (29) are fixed inside the mixing base (26) and a discharging assembly (25), the motor (28) is connected with the speed reducer (29) in a transmission way, a stirring frame (22) is rotated in the middle of the upper end of the mixing base (26), the stirring frame (22) is connected with the speed reducer (29) in a transmission way, an electric stirring frame (27) and a plurality of scraping frames (23) are arranged on the stirring frame (22), a mixing cylinder (21) is arranged at the upper end of the mixing base (26), the stirring frame (22), the scraping frames (23) and the electric stirring frame (27) are all positioned inside the mixing cylinder (21), a blanking hole (24) is formed in the mixing base (26), the discharging assembly (25) is positioned under the blanking hole (24), and a heat-insulating cotton layer is arranged on the outer wall of the mixing cylinder (21);
the discharging assembly (25) comprises a discharging barrel, a turnover rod (31) and an electric push rod (32) are hinged to the discharging barrel, the end part of the electric push rod (32) is hinged to the end part of the turnover rod (31), a plurality of connecting rods (30) are fixed to the turnover rod (31), turnover blocking plates (33) are fixed to the upper ends of the connecting rods (30), and the turnover blocking plates (33) are located under the discharging holes (24);
the differential connecting shaft (8) is connected between a rotating shaft of the heating stirring tank (4) and the rotating stirring frame (22), a plurality of circumferentially uniformly distributed supporting legs (20) are fixed at the lower end of the heating stirring tank (4), the supporting legs (20) are fixed at the upper end of the mixing base (26), a drain pipe (19) is further arranged at the lower end of the heating stirring tank (4), an electric control valve (2) is connected to the drain pipe (18), and a plurality of first feeding pipes (9) are arranged at the upper end of the heating stirring tank (4);
the powder mixing mechanism (1) comprises a stirring tank, a plurality of support rods (17) uniformly distributed on the circumference are arranged at the lower end of the stirring tank, the support rods (17) are fixed on the heating stirring tank (4), a discharge hole (16) is formed in the lower end of the stirring tank, the upper end of a discharge pipe (3) is connected to the lower end of the discharge hole (16), an electric control valve (2) is arranged on the discharge pipe (3), a differential connecting shaft (8) is connected between a rotating shaft of the stirring tank and a rotating shaft of the heating stirring tank (4), a plurality of scraping plates (15), a distributing hole tray (14) and distributing spiral pipes (13) uniformly distributed on the circumference are sequentially arranged on the rotating shaft of the stirring tank from bottom to top, a distributing cylinder (12) is arranged on the stirring tank, the distributing spiral pipes (13) are positioned inside the distributing cylinder (12), a second feed pipe (10) is arranged at the upper end of the distributing cylinder (12), and a distributing hopper (11) is arranged on the second feed pipe (10);
the quantitative discharging mechanism (6) comprises a mounting plate, the mounting plate is fixed on a mixing drum (21), the lower end of a reinforcing rib (5) is fixed on the mounting plate, a material measuring box (34) and a pneumatic push rod (37) are fixed on the mounting plate, the end part of the pneumatic push rod (37) is connected with the material measuring box (34), the material measuring box (34) is respectively connected with the lower ends of a material discharging pipe (3) and a material discharging pipe (18), a turnover connecting rod (36) is hinged on the mounting plate, the end part of the turnover connecting rod (36) is hinged on an inner blade wheel shaft of the material measuring box (34), a discharging air valve (35) is arranged at the discharging end of the material measuring box (34), and the discharging end of the discharging air valve (35) is connected on the mixing drum (21) through a pipeline.
2. The process for preparing the soil acid regulator according to claim 1, wherein in the second step, the components are as follows in parts by weight: urea 5-50 parts, borax 4.5-5.5 parts, zinc sulfate 4.5-5.5 parts, and water 35-45 parts.
3. The process for preparing the soil acid regulator according to claim 1, wherein in the second step, the components are as follows in parts by weight: 25 parts of urea, 5 parts of borax, 5 parts of zinc sulfate and 30 parts of water.
4. The process for preparing the soil acid regulator according to claim 1, wherein in the third step, the following components are in parts by weight: 5-60 parts of zinc chloride, 5-30 parts of potassium fulvate, 35-85 parts of calcined dolomite powder obtained in the step one, 5-40 parts of urea, 0-50 parts of ammonium sulfate and 1-20 parts of magnesium sulfate.
5. The process for preparing the soil acid regulator according to claim 1, wherein in the third step, the following components are in parts by weight: 30 parts of zinc chloride, 20 parts of potassium fulvate, 55 parts of calcined dolomite powder obtained in the step one, 25 parts of urea, 25 parts of ammonium sulfate and 10 parts of magnesium sulfate.
6. A soil conditioner prepared by the process for preparing a soil conditioner according to any one of claims 1 to 5, which is characterized by being prepared from the following raw materials in parts by weight: 10-90 parts of urea, 4.5-5.5 parts of borax, 4.5-5.5 parts of zinc sulfate, 5-60 parts of zinc chloride, 5-30 parts of potassium fulvate, 35-85 parts of calcined dolomite powder obtained in the step one, 0-50 parts of ammonium sulfate and 1-20 parts of magnesium sulfate (the weight of each part is the same).
7. The soil acid regulator of claim 6, which is characterized by being prepared from the following raw materials in parts by weight: 15-85 parts of urea, 4.8-5.2 parts of borax, 4.7-5.1 parts of zinc sulfate, 15-50 parts of zinc chloride, 10-20 parts of potassium fulvate, 55-75 parts of calcined dolomite powder obtained in the step one, 5-45 parts of ammonium sulfate and 5-15 parts of magnesium sulfate (the weight of each part is the same).
8. The soil acid regulator of claim 7, which is characterized by being prepared from the following raw materials in parts by weight: 55 parts of urea, 4.9 parts of borax, 4.9 parts of zinc sulfate, 35 parts of zinc chloride, 15 parts of potassium fulvate, 65 parts of calcined dolomite powder obtained in the step one, 30 parts of ammonium sulfate and 12 parts of magnesium sulfate (the weight of each part is the same).
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