CN101768024B - Organic and inorganic compound fertilizer and preparation method thereof - Google Patents
Organic and inorganic compound fertilizer and preparation method thereof Download PDFInfo
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- CN101768024B CN101768024B CN200810187990A CN200810187990A CN101768024B CN 101768024 B CN101768024 B CN 101768024B CN 200810187990 A CN200810187990 A CN 200810187990A CN 200810187990 A CN200810187990 A CN 200810187990A CN 101768024 B CN101768024 B CN 101768024B
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 150000002484 inorganic compounds Chemical class 0.000 title abstract 2
- 229910010272 inorganic material Inorganic materials 0.000 title abstract 2
- 150000002894 organic compounds Chemical class 0.000 title abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000002253 acid Substances 0.000 claims abstract description 30
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 24
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000011591 potassium Substances 0.000 claims abstract description 21
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 19
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 16
- 239000000376 reactant Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 31
- 238000005469 granulation Methods 0.000 claims description 22
- 230000003179 granulation Effects 0.000 claims description 22
- 239000002131 composite material Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 14
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 11
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 11
- 239000006012 monoammonium phosphate Substances 0.000 claims description 11
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- 229940072033 potash Drugs 0.000 claims description 7
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 7
- 235000015320 potassium carbonate Nutrition 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims description 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 6
- 239000010459 dolomite Substances 0.000 claims description 6
- 229910000514 dolomite Inorganic materials 0.000 claims description 6
- 239000002686 phosphate fertilizer Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 235000019270 ammonium chloride Nutrition 0.000 claims description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims description 3
- 239000001506 calcium phosphate Substances 0.000 claims description 3
- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims description 3
- 229910000150 monocalcium phosphate Inorganic materials 0.000 claims description 3
- 235000019691 monocalcium phosphate Nutrition 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 238000009818 secondary granulation Methods 0.000 claims description 3
- 239000002426 superphosphate Substances 0.000 claims description 3
- 235000007686 potassium Nutrition 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract description 3
- 239000002689 soil Substances 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 235000013619 trace mineral Nutrition 0.000 abstract description 2
- 239000011573 trace mineral Substances 0.000 abstract description 2
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical class C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 abstract 2
- 238000001035 drying Methods 0.000 abstract 1
- 239000000945 filler Substances 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 18
- 229910052698 phosphorus Inorganic materials 0.000 description 8
- 239000005416 organic matter Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 235000015097 nutrients Nutrition 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- 238000013467 fragmentation Methods 0.000 description 4
- 238000006062 fragmentation reaction Methods 0.000 description 4
- 238000006396 nitration reaction Methods 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000010871 livestock manure Substances 0.000 description 2
- 241000607479 Yersinia pestis Species 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
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Abstract
The invention relates to the agricultural technology field, in particular to an organic and inorganic compound fertilizer and a preparation method thereof; the method comprises the following steps: step A, potassium fulvate and/or humic acid salt and phosphatic fertilizer are dissolved in water and are mixed to obtain the solution; step B, sulfuric acid or dilute phosphoric acid is used for mixing the solution, so as to obtain the mixed acid solution; step C, the mixed acid solution and gas ammonia are used for carrying out neutralization reaction, so as to obtain reactants; the drying problem caused by high moisture content can be effectively reduced by fully utilizing the neutralization reaction heat; meanwhile, the potassium fulvate and the humic acid salt not only can be used as main raw materials of organic matters, trace elements and potassium elements, but also can be used as the filler of the chemical fertilizer, that is, the fertilizer adhesive which is effective ingredient for improving the soil and is used as acid substance to carry out neutralization reaction.
Description
Technical field
The present invention relates to agricultural technology field, relate in particular to a kind of composite organic-inorganic fertilizer and preparation method thereof.
Background technology
At present, in order to promote the quick fine growth of farm crop, fertilizer plays an important role for agricultural development in agriculture prodn.Especially since nineteen ninety, composite fertilizer is almost annual increasing the speed increase of 1,000,000 tons (quantities of goods produced), and progressively turns to and produce high concentration N, phosphorus, K composite fertilizer.Require according to the Ministry of Agriculture: the Eleventh Five-Year Plan period high-concentration compound fertilizer quantity accounts for 30% of chemical fertilizer total amount, promptly needs 1,600 ten thousand tons of high-concentration compound fertilizer material at least.
Yet the use of a large amount of chemical fertilizer makes, and hardening soil phenomenon is serious, crop pest general, chemical fertilizer utilization ratio descends year by year, widespread pollution from the overuse of fertilizers and pesticides in rural area is big, the peasant bears increasing with planting.Farm manure as a kind of fertilizer, can be alleviated and use the problem that chemical fertilizer produced, and still, thoroughly will not cause a series of soil-borne diseases if farm manure becomes thoroughly decomposed, and fertilizer efficiency lower, be inconvenient to use.Therefore, chemical fertilizer and fertilizer are carried out becoming the focus that current chemical fertilizer preparation is produced in conjunction with making composite organic-inorganic fertilizer.The existing method for preparing composite organic-inorganic fertilizer is nitrogen, phosphorus, K composite fertilizer and fertilizer to be carried out physical doping, i.e. dissolving mixing.The defective of this method is, the fertilizer moisture of preparing is big, poor dissolution, peculiar smell is heavy, intensity is low.
Summary of the invention
Technical problem to be solved by this invention provides a kind of composite organic-inorganic fertilizer and preparation method thereof, can prepare that moisture is little, intensity is high, free from extraneous odour, composite organic-inorganic fertilizer that solvability is good.
The technical scheme that the present invention solves the problems of the technologies described above is following: a kind of preparation method of composite organic-inorganic fertilizer comprises:
Steps A, potassium fulvate and/or humate is water-soluble with phosphate fertilizer and mix to obtain solution;
Step B allocates said solution with sulfuric acid or dilute phosphoric acid, obtains mixed acid solution;
Step C, said mixed acid solution and gas ammonia carry out neutralization reaction, obtain reactant.
The invention has the beneficial effects as follows: the present invention makes full use of neutralization reaction heat and effectively reduces the oven dry problem of bringing because of moisture is big; Simultaneously potassium fulvate, humate are promptly made main raw materials such as organic matter, trace element, potassium element, made the weighting material of chemical fertilizer again, i.e. fertilizer adhesive; Be again the effective constituent of improving the soil; In addition, also can carry out neutralization reaction as acidic substance, be to achieve many things at one stroke.
On the basis of technique scheme, the present invention can also do following improvement.
Further, said phosphate fertilizer is one or more in following:
Monoammonium phosphate, superphosphate of lime, monocalcium phosphate, potassium primary phosphate.
Further, the proportion of said mixed acid solution is 1.25 to 1.6.
Further, the degree of neutralization of said reactant is 1.05 to 1.8.
Further, this method further comprises,
Step D carries out granulation with said reactant;
Step e, with the material after the said granulation dry, screening, processing under cooling;
Step F is with the qualified particle of said processing back size packing after surperficial anti-caking is handled; After inaccuracy of dimensions particle and potash fertilizer and weighting material carried out secondary granulation, change step e over to.
Further, said weighting material is one or more in following:
Ammonium sulfate, ammonium chloride, wilkinite, ground dolomite, sal epsom, manganous sulfate.
Further, this method further comprises,
Step G carries out dedusting washing, emptying then with the tail gas that produces in the preparation process;
Step H with after additional liquid mixes, adds the washings of said tail gas said mixed acid solution and reuses.
Further, the proportion at said washing tail gas night is smaller or equal to 1.2.
Further, said additional liquid is water or diluted acid, and the mass percent concentration of wherein said diluted acid is 5%-10%.
The invention also discloses a kind of composite organic-inorganic fertilizer that adopts the inventive method preparation, by mass percentage, nitrogen, phosphorus, potassium total content are 25%-48%, and potassium fulvate and/or humate content are 8%-30%, and moisture content is smaller or equal to 2%.
The invention has the beneficial effects as follows that this composite organic-inorganic fertilizer moisture is little, intensity is high, free from extraneous odour, solvability be good, and smooth surface, mellow and full, prevented from caking again; Quick-acting complete dissolving; Environmental protection, polluting lessly, have the higher market competitiveness, is the desirable fertilizer of realizing the efficient green agricultural.
Description of drawings
Fig. 1 is composite organic-inorganic fertilizer preparing method's of the present invention schema.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention and characteristic are described, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
With reference to Fig. 1, be composite organic-inorganic fertilizer preparing method's of the present invention schema.This method comprises:
Wherein, said phosphate fertilizer can be in monoammonium phosphate, superphosphate of lime, monocalcium phosphate, the potassium primary phosphate one or more.
In this step, neutralization reaction heat can evaporate the most of moisture in the reactant with the water vapor form, can reduce the moisture in the composite organic-inorganic fertilizer of preparation.
Preferably, this method can further include:
Step 104 is carried out granulation with said reactant;
Step 105, with the material after the said granulation dry, screening, processing under cooling;
Step 106 is with the qualified particle of said processing back size packing after surperficial anti-caking is handled; After inaccuracy of dimensions particle and potash fertilizer and weighting material carried out secondary granulation, change step 105 over to.
Wherein, weighting material is one or more in following:
Ammonium sulfate, ammonium chloride, wilkinite, ground dolomite, sal epsom, manganous sulfate.
Step 107 is carried out dedusting washing, emptying then with the tail gas that produces in the preparation process;
Step 108 with after additional liquid mixes, adds the washings of said tail gas said mixed acid solution and reuses.
Wherein, the proportion at washing tail gas night is smaller or equal to 1.2, and additional liquid is water or diluted acid, and the mass percent concentration of diluted acid is 5%-10%.If it is thicker that the proportion of the tail gas washing liquid that obtains is higher than 1.2 solution, be unfavorable for that then tail gas absorbs, need to change again.
Come the present invention is carried out detailed explanation below in conjunction with concrete embodiment.
Embodiment 1:
Complex fertilizer product specification: N-P
2O
5-K
2O=16-8-16, i.e. N: P
2O5: K
2The mass ratio of O is 16: 8: 16, by mass percentage, and total nutrient>=40%, organic>=16%, moisture≤2.0%.Wherein, nutrient is meant nitrogen, phosphorus, potassium; Organic matter refers to potassium fulvate or ammonium humate.
With potassium fulvate and monoammonium phosphate through in 45-80 ℃ water, dissolving behind each self-measuring; Send into nitration mixture groove and sulfuric acid after stirring and be mixed with mixed acid solution; Mixed acid solution sent in the pipeline reactor with gas ammonia from the ammonia station with dedicated pump carry out neutralization reaction, reactant is coated on and carries out granulation on the tablets press.The material that granulation produced is through oven dry, screening, cooling, and qualified particle is finished product after surperficial anti-caking is handled.Macrobead after small-particle and the fragmentation is with sending into granulation once more in the tablets press through the potash fertilizer of metering as bed material.Granulation, oven dry, tail gas emptying after dedusting, washing that process of cooling produced.
Raw material and subsidiary material are used scale
| Raw material and subsidiary material | Specification (quality percentage composition) | Unit | Consumption |
| Monoammonium phosphate | N≥11％P 2O 5≥44％H 2O≤1.5％ | Kilogram | 182 |
| Repone K | K 2O≥60％H2O≤1.5％ | Kilogram | 211 |
| Potassium fulvate | N≥3.5％K 2O >=11.5% organic matter >=35% | Kilogram | 291 |
| Sulfuric acid | H 2SO 4≥92.5％ | Kilogram | 158 |
| Liquefied ammonia | N≥82％ | Kilogram | 158 |
Embodiment 2:
The mass ratio of complex fertilizer product specification: N: P2O5: K2O is 15: 6: 9, by mass percentage, and total nutrient>=30%, organic>=20%, moisture≤2.0%.
With potassium fulvate and monoammonium phosphate through in 45-80 ℃ water, dissolving behind each self-measuring; Send into nitration mixture groove and sulfuric acid after stirring and be mixed with mixed acid solution; Mixed acid solution sent in the pipeline reactor with gas ammonia from the ammonia station with dedicated pump carry out neutralization reaction; Reactant is coated on the bed material of tablets press and carries out granulation, and the material that granulation produced is through oven dry, screening, cooling, and qualified particle is finished product after surperficial anti-caking is handled.The macrobead of small-particle after with fragmentation with send into granulation once more in the tablets press through the potash fertilizer of metering as bed material.Granulation, oven dry, tail gas emptying after dedusting, washing that process of cooling produced.
Raw material and subsidiary material are used scale
| Raw material and subsidiary material | Specification (quality percentage composition) | Unit | Consumption |
| Monoammonium phosphate | ?N≥11％P 2O 5≥44％H 2O≤1.5％ | Kilogram | 136 |
| Repone K | ?K 2O≥60％H 2O≤1.5％ | Kilogram | 83 |
| Potassium fulvate | ?N≥3.5％K 2O >=11.5% organic matter >=35% | Kilogram | 364 |
| Sulfuric acid | ?H 2SO 4≥92.5％ | Kilogram | 140 |
| Liquefied ammonia | ?N≥82％ | Kilogram | 158 |
| Weighting agent | Ground dolomite | Kilogram | 120 |
Embodiment 3:
Complex fertilizer product specification: N: P
2O5: K
2The mass ratio of O is 16: 10: 10, by mass percentage, and total nutrient>=36%, organic>=20%, moisture≤2.0%.
With potassium fulvate and monoammonium phosphate through in 45-80 ℃ water, dissolving behind each self-measuring; Send into nitration mixture groove and sulfuric acid after stirring and be mixed with mixed acid solution; Mixed acid solution sent in the pipeline reactor with gas ammonia from the ammonia station with dedicated pump carry out neutralization reaction; Reactant is coated on the bed material of tablets press and carries out granulation, and the material that granulation produced is through oven dry, screening, cooling, and qualified particle is finished product after surperficial anti-caking is handled.The macrobead of small-particle after with fragmentation with send into granulation once more in the tablets press through the potash fertilizer of metering as bed material.Granulation, oven dry, tail gas emptying after dedusting, washing that process of cooling produced.
Raw material and subsidiary material are used scale
| Raw material and subsidiary material | Specification (quality percentage composition) | Unit | Consumption |
| Monoammonium phosphate | N≥11％P 2O 5≥44％H 2O≤1.5％ | Kilogram | 227 |
| Repone K | K 2O≥60％H 2O≤1.5％ | Kilogram | 140 |
| Potassium fulvate | N≥3.5％K 2O >=11.5% organic matter >=35 | Kilogram | 364 |
| Sulfuric acid | H 2SO 4≥92.5％ | Kilogram | 100 |
| Liquefied ammonia | N≥82％ | Kilogram | 121 |
| Weighting agent | Ground dolomite | Kilogram | 52 |
Embodiment 4:
Complex fertilizer product specification: N: P
2O5: K
2The mass ratio of O is 17: 10: 8, by mass percentage, and total nutrient>=35%, organic>=20%, moisture≤2.0%.
With humate and monoammonium phosphate through in 45-80 ℃ water, dissolving behind each self-measuring; Send into nitration mixture groove and sulfuric acid after stirring and be mixed with mixed acid solution; Mixed acid solution sent in the pipeline reactor with gas ammonia from the ammonia station with dedicated pump carry out neutralization reaction; Reactant is coated on the bed material of tablets press and carries out granulation, and the material that granulation produced is through oven dry, screening, cooling, and qualified particle is finished product after surperficial anti-caking is handled.The macrobead of small-particle after with fragmentation with send into granulation once more in the tablets press through the potash fertilizer of metering as bed material.Granulation, oven dry, tail gas emptying after dedusting, washing that process of cooling produced.
Raw material and subsidiary material are used scale
| Raw material and subsidiary material | Specification (quality percentage composition) | Unit | Consumption |
| Monoammonium phosphate | N≥11％P 2O 5≥44％H 2O≤1.5％ | Kilogram | 227 |
| Repone K | K 2O≥60％H 2O≤1.5％ | Kilogram | 140 |
| Ammonium humate | N >=4% organic matter >=55% | Kilogram | 364 |
| Sulfuric acid | H 2SO 4≥92.5％ | Kilogram | 100 |
| Liquefied ammonia | N≥82％ | Kilogram | 121 |
| Weighting agent | Ground dolomite | Kilogram | 52 |
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the preparation method of a composite organic-inorganic fertilizer is characterized in that, comprise,
Steps A, potassium fulvate and/or humate is water-soluble with phosphate fertilizer and mix to obtain solution;
Step B allocates said solution with sulfuric acid, obtains mixed acid solution, and the proportion of said mixed acid solution is 1.25 to 1.6;
Step C, said mixed acid solution and gas ammonia carry out neutralization reaction, obtain reactant, and the degree of neutralization of said reactant is 1.05 to 1.8;
Step D carries out granulation with said reactant;
Step e, with the material after the said granulation dry, screening, processing under cooling;
Step F is with the qualified particle of said processing back size packing after surperficial anti-caking is handled; After inaccuracy of dimensions particle and potash fertilizer and weighting material carried out secondary granulation, change step e over to.
2. method according to claim 1 is characterized in that, said phosphate fertilizer is one or more in following:
Monoammonium phosphate, superphosphate of lime, monocalcium phosphate, potassium primary phosphate.
3. method according to claim 1 is characterized in that, said weighting material is one or more in following:
Ammonium sulfate, ammonium chloride, wilkinite, ground dolomite, sal epsom, manganous sulfate.
4. method according to claim 1 is characterized in that, this method further comprises,
Step G carries out dedusting washing, emptying then with the tail gas that produces in the preparation process;
Step H with after additional liquid mixes, adds the washings of said tail gas said mixed acid solution and reuses.
5. method according to claim 4 is characterized in that, the proportion at said washing tail gas night is smaller or equal to 1.2.
6. method according to claim 4 is characterized in that, said additional liquid is water or diluted acid, and the mass percent concentration of wherein said diluted acid is 5% to 10%.
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| CN102276355A (en) * | 2011-07-02 | 2011-12-14 | 山东寿光大地绿园肥业有限公司 | Potassium sulfate type compound fertilizer produced by treating weathered coal by ammoniation method and preparation method thereof |
| CN102344314B (en) * | 2011-07-02 | 2013-02-27 | 山东寿光大地绿园肥业有限公司 | Weathered coal-containing potassium sulfate composite fertilizer treated by acidulation and manufacturing method thereof |
| CN102898247B (en) * | 2012-11-13 | 2015-04-01 | 青岛乡润生物科技有限公司 | Method for preparing organic and inorganic blended fertilizer |
| CN108484322A (en) * | 2018-04-11 | 2018-09-04 | 李玉华 | Fulvic acid double superhosphate potassium dihydrogen phosphate ammophos preparation method and system |
| CN110105138A (en) * | 2019-05-15 | 2019-08-09 | 金正生物化工有限公司 | A kind of high concentration organic-inorganic compound fertilizer granulating agent |
| CN110437005A (en) * | 2019-09-05 | 2019-11-12 | 新疆农业科学院土壤肥料与农业节水研究所(新疆维吾尔自治区新型肥料研究中心) | A kind of faintly acid salt resistance alkali biological liquid fertilizer and preparation method thereof |
| CN111943784A (en) * | 2020-09-17 | 2020-11-17 | 嘉施利（宜城）化肥有限公司 | Compound fertilizer production method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562910A (en) * | 2004-03-26 | 2005-01-12 | 江萍 | Technique for producing compound fertilizers |
| CN1562900A (en) * | 2004-04-07 | 2005-01-12 | 鞍山沃地宝科技有限公司 | Compound fertilizers rich in humate, salt of fulvic acid, and producing method |
| CN101225005A (en) * | 2008-02-01 | 2008-07-23 | 山东省林业科学研究院 | Humic acid slowly available fertilizer and preparation method thereof |
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| CN101768024A (en) | 2010-07-07 |
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