CN102320867A - Sulphate-potassium magnesium fertilizer and preparation method thereof - Google Patents
Sulphate-potassium magnesium fertilizer and preparation method thereof Download PDFInfo
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- CN102320867A CN102320867A CN201110255108A CN201110255108A CN102320867A CN 102320867 A CN102320867 A CN 102320867A CN 201110255108 A CN201110255108 A CN 201110255108A CN 201110255108 A CN201110255108 A CN 201110255108A CN 102320867 A CN102320867 A CN 102320867A
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- magnesium sulphate
- potash magnesium
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- sulphate fertilizer
- granulation
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Abstract
The invention belongs to the field of fertilizer, specifically to sulphate-potassium magnesium fertilizer and a preparation method thereof. The sulphate-potassium magnesium fertilizer provided by the present invention is spherical particles, and is prepared through the following steps: carrying out treatments of crushing, mixing, pelletizing, drying, cooling and screening for raw materials of the sulphate-potassium magnesium fertilizer to obtain the sulphate-potassium magnesium fertilizer, wherein in pelletizing step, a disc pelletizer or a cylinder pelletizer is adopted for spraying water mist or steam to carry out pelletizing. The invention further provides a preparation method for the sulphate-potassium magnesium fertilizer. The method comprises carrying out steps of crushing, mixing, pelletizing, drying, cooling and screening for the raw materials of the sulphate-potassium magnesium fertilizer, wherein in pelletizing step, a disc pelletizer or a cylinder pelletizer is adopted for spraying water mist or steam to carry out pelletizing. The sulphate-potassium magnesium fertilizer prepared by the method of the invention has the effects of good fertilizer efficiency, rapid nutrient absorption, uniform fertilizer application and convenient fertilizer application; the method provided by the present invention has characteristics of simple process, low production cost, wide serviceable range and easy popularization.
Description
Technical field
The invention belongs to fertilizer field, be specifically related to a kind of potash magnesium sulphate fertilizer and method of manufacture thereof.
Background technology
Existing potash magnesium sulphate fertilizer is to adopt in Qinghai Salt Lake Bittern or the solid kalium-magnesium deposit only to extract or directly remove the puritan filler potassic-magnesian fertilizer that contains moderate-elements such as magnesium, sulphur that impurity is processed through physical method; Use the granulation of extruder grain method, then the production technique of oven dry.There is following shortcoming in the potash magnesium sulphate fertilizer that this technology makes: 1. particle is than great, causes that the fertilising consumption is big, uniformity coefficient is poor, and is unbalanced with plot farming plant-growth.2. pellet density is big, and causes the water solvent weak effect, agricultural plant absorbing nutrient weak effect.3. particle is owing to be irregular, and causes the machine sowing difficulty big.
Summary of the invention
The present invention provides a kind of potash magnesium sulphate fertilizer, and the particle proportion of this potash magnesium sulphate fertilizer is little, density is little, regular shape; For this reason, the present invention also provides the method for manufacture of this potash magnesium sulphate fertilizer.
The present invention provides a kind of potash magnesium sulphate fertilizer to achieve these goals, and said potash magnesium sulphate fertilizer is a spherical particle.
Further, said potash magnesium sulphate fertilizer is prepared from following step: with potash magnesium sulphate fertilizer raw material crushing, mixing, granulation, oven dry, cooling, screening, obtain potash magnesium sulphate fertilizer; Said granulation step is with granulating disc or cylinder tablets press atomized water spray or steam granulation.
The present invention also provides the method for manufacture of this potash magnesium sulphate fertilizer, comprises the step with potash magnesium sulphate fertilizer raw material crushing, mixing, granulation, oven dry, cooling, screening, and said granulation step is with granulating disc or cylinder tablets press atomized water spray or steam granulation.
The potash magnesium sulphate fertilizer of using method production of the present invention has following effect:
1. good fertilizer efficiency: at K
2Under the identical situation of O content, potash magnesium sulphate fertilizer fertilizer efficiency of the present invention obviously is superior to the potash magnesium sulphate fertilizer that the extruder grain method is produced.Use potash magnesium sulphate fertilizer of the present invention and can make increasing crop yield 5%-20%, 7 days-12 days in advance farm crop ripening stage.
2. nutrition absorption is fast: potash magnesium sulphate fertilizer of the present invention is because autologous density is little; Be the potash magnesium sulphate fertilizer produced of extruder grain method density 79.8%; Water-intake rate is high, and the growing requirements that can effectively provide nutrient to promote farm crop only needs minor amount of water just can dissolve; For farm crop provide nutrient, be specially adapted to arid environment short of rain.
3. fertilising is even, and fertilising is convenient: potash magnesium sulphate fertilizer of the present invention is little owing to particle, light specific gravity, so under the condition of equivalent weight fertilising, the good evenness of fertilising; Potash magnesium sulphate fertilizer of the present invention is a spheroidal particle, adopt manual work to execute to broadcast or machine sowing all very convenient.
4. technology is simple, and production cost is low: preparation technology of the present invention is simple, does not also need special devices or expensive equipment, has reduced production cost.
5. applied widely, be easy to promote.
6. be rich in multiple that multiple kinds of crops needs in the potash magnesium sulphate fertilizer of the present invention, trace element; Like sulphur, magnesium, boron, iron etc.; The multiple nutrients composition of multiple kinds of crops necessary for growth can be provided; Wherein: element sulphur can change the pH value in the alkaline soil, makes it more can transform to neutral soil, and magnesium elements is that agricultural plant carries out photosynthesis and generates chlorophyllous principal element.Potash magnesium sulphate fertilizer of the present invention does not add other industrial chemicals in the course of processing, can not produce new pollution to soil, thereby has avoided fertilising and the various fertilizer damages that bring.
Preferably, the rotating speed of said granulating disc is 6-14 rev/min, and the obliquity of disk is the 30-40 degree.
Preferably, the rotating speed of said granulating disc is 10 rev/mins, and the obliquity of disk is 35 degree.
Preferably, the rotating speed of said cylinder tablets press is 4-10 rev/min, and the obliquity of the granulation cylinder of said cylinder tablets press is the 2-10 degree.
Preferably, the rotating speed of said cylinder tablets press is 7 rev/mins, and the obliquity of the granulation cylinder of said cylinder tablets press is 5 degree.
Because of the viscosity of puritan filler potassic-magnesian fertilizer itself relatively poor; And in granulation, can not add the additive that other has viscosity again; Using common prilling process potash magnesium sulphate fertilizer can't form spherical; Prove that through test of many times potash magnesium sulphate fertilizer is a granulated into spherical and obliquity and rotating speed tablets press has substantial connection.The rotating speed of selector disc tablets press is 6-14 rev/min, and the obliquity of disk is the 30-40 degree; Or to select the rotating speed of cylinder tablets press be 4-10 rev/min, and the obliquity of its granulation cylinder is the 2-10 degree, and the granulation balling ratio of this moment is 20-30%.And the rotating speed of selector disc tablets press is 10 rev/mins, and the obliquity of disk is 35 degree; Or to select the rotating speed of cylinder tablets press be 7 rev/mins, and the obliquity of its granulation cylinder is 5 degree, and the granulation balling ratio of this moment is the highest, can reach 65%.
Preferably, the bake out temperature of said baking step is 480 ℃-520 ℃.The potash magnesium sulphate fertilizer grain color of in this TR, producing is white, and yield rate can reach 55%, and is too high like bake out temperature, and the particle behind high temperature sintering produces variable color, and the potash magnesium sulphate fertilizer particle surface is coke black, influences product appearance; Temperature like oven dry is low excessively, and then the baking of potash magnesium sulphate fertilizer particle is not done, and in dryer, breaks into pieces easily, influences the yield rate of product.
More preferably, K in the said potash magnesium sulphate fertilizer
2The quality percentage composition of O is 22%-26%.
Embodiment
Embodiment of the invention equipment used is conventional equipment.
Embodiment 1
The preparation method of potash magnesium sulphate fertilizer is following:
(1) fragmentation: will contain mass percent and be 20% K
2The blocky potash magnesium sulphate fertilizer raw material of O is ground into powdery with kibbler;
(2) mixed: as the potash magnesium sulphate fertilizer raw material that crushes to be stirred through stirrer, and a spot of fritter potash magnesium sulphate fertilizer raw material is continued to blend the potash magnesium sulphate fertilizer of powdering through stirrer;
(3) granulation: the powdered potash magnesium sulphate fertilizer with granulating disc atomized water spray or steam granulation, is formed globular potash magnesium sulphate fertilizer particle.The diameter of granulating disc is 2500 millimeters, and rotating speed is 10 rev/mins, and the obliquity of disk is 35 degree;
(4) oven dry: the potash magnesium sulphate fertilizer particle after the granulation is put into dryer dry, at 480 ℃～520 ℃, drying time is 30 minutes with Control for Kiln Temperature;
(5) cooling: air-cooled with cooler, the potash magnesium sulphate fertilizer particle after the oven dry is reduced to below 40 ℃;
(6) screening: the screening diameter obtains potash magnesium sulphate fertilizer at 2 millimeters-4.5 millimeters cooled potash magnesium sulphate fertilizer particle, wherein contains mass percent and be 24% K
2O.
Diameter is returned pulverizing process at the potash magnesium sulphate fertilizer particle more than 4.5 millimeters process again, diameter is returned granulating working procedure at the potash magnesium sulphate fertilizer particle below 2 millimeters process again, the potash magnesium sulphate fertilizer that obtains is packaged into bag.Potash magnesium sulphate fertilizer is tested, meet state quality standard (GB/T20937-2007) through check, concrete assay is as shown in table 1.
It is 24% K that table 1 contains mass percent
2The assay of the potash magnesium sulphate fertilizer of O
Under fertilizing method and all identical situation of fertilising consumption, use potash magnesium sulphate fertilizer of the present invention and use potash magnesium sulphate fertilizer that the extruder grain method produces and compare and have tangible effect of increasing production.Experimental result is seen table 2.
Table 2 is used the effect of increasing production of potash magnesium sulphate fertilizer of the present invention
Embodiment 2
The difference of present embodiment and embodiment 1 is: the rotating speed of granulating disc is 6 rev/mins, and the obliquity of disk is 30 degree, and this moment, the granulation balling ratio of potash magnesium sulphate fertilizer was 20%.
It is 24% K that the potash magnesium sulphate fertilizer that obtains contains mass percent
2O.
Embodiment 3
The difference of present embodiment and embodiment 1 is: the rotating speed of granulating disc is 14 rev/mins, and the obliquity of disk is 40 degree, and this moment, the granulation balling ratio of potash magnesium sulphate fertilizer was 30%.
It is 24% K that the potash magnesium sulphate fertilizer that obtains contains mass percent
2O.
Embodiment 4
The preparation method of potash magnesium sulphate fertilizer is following:
(1) fragmentation: will contain mass percent and be 19% K
20 blocky potash magnesium sulphate fertilizer raw material is ground into powdery with kibbler;
(2) mixed: as the potash magnesium sulphate fertilizer raw material that crushes to be stirred through stirrer, and a spot of fritter potash magnesium sulphate fertilizer raw material is continued to blend the potash magnesium sulphate fertilizer of powdering through stirrer;
(3) granulation: the powdered potash magnesium sulphate fertilizer with cylinder tablets press atomized water spray or steam granulation, is formed globular potash magnesium sulphate fertilizer particle.The diameter of the granulation cylinder of cylinder tablets press is 1.6 meters, and rotating speed is 7 rev/mins, and the obliquity of the granulation cylinder of cylinder tablets press is 5 degree;
(4) oven dry: the potash magnesium sulphate fertilizer particle after the granulation is put into dryer dry, at 480 ℃～520 ℃, drying time is 30 minutes with Control for Kiln Temperature;
(5) cooling: air-cooled with cooler, the potash magnesium sulphate fertilizer particle after the oven dry is reduced to below 40 ℃;
(6) screening: the screening diameter obtains potash magnesium sulphate fertilizer at 2 millimeters-4.5 millimeters cooled potash magnesium sulphate fertilizer particle, wherein contains mass percent and be 22% K
2O.
Diameter is returned pulverizing process at the potash magnesium sulphate fertilizer particle more than 4.5 millimeters process again, diameter is returned granulating working procedure at the potash magnesium sulphate fertilizer particle below 2 millimeters process again, the potash magnesium sulphate fertilizer that obtains is packaged into bag.
Embodiment 5
The difference of present embodiment and embodiment 1 is: the diameter of the granulation cylinder of cylinder tablets press is 1.7 meters, and rotating speed is 4 rev/mins, and the obliquity of the granulation cylinder of cylinder tablets press is 2 degree, and this moment, the granulation balling ratio of potash magnesium sulphate fertilizer was 20%.
It is 22% K that the potash magnesium sulphate fertilizer that obtains contains mass percent
2O.
Embodiment 6
The difference of present embodiment and embodiment 1 is: the granulation diameter of cylinder of cylinder tablets press is 1.8 meters, and rotating speed is 10 rev/mins, and the obliquity of the granulation cylinder of cylinder tablets press is 10 degree, and this moment, the granulation balling ratio of potash magnesium sulphate fertilizer was 30%.
It is 22% K that the potash magnesium sulphate fertilizer that obtains contains mass percent
2O.
Embodiment 7
(1) fragmentation: will contain mass percent and be 22% blocky potash magnesium sulphate fertilizer raw material and be ground into powdery with kibbler;
(2) screening: isolate clod in the powdered potash magnesium sulphate fertilizer raw material, stone, industrial refuse etc. with roller grizzly;
(3) mixed: as the potash magnesium sulphate fertilizer raw material that crushes to be stirred through stirrer, and a spot of fritter potash magnesium sulphate fertilizer raw material is continued to blend the potash magnesium sulphate fertilizer of powdering through stirrer;
(4) granulation: the powdered potash magnesium sulphate fertilizer with granulating disc atomized water spray or steam granulation, is formed globular potash magnesium sulphate fertilizer particle.The diameter of granulating disc is 2500 millimeters, and rotating speed is 10 rev/mins, and the obliquity of disk is 35 degree;
(5) oven dry: the potash magnesium sulphate fertilizer particle after the granulation is put into dryer dry, at 480 ℃～520 ℃, drying time is 30 minutes with Control for Kiln Temperature;
(6) cooling: air-cooled with cooler, the potash magnesium sulphate fertilizer particle after the oven dry is reduced to below 40 ℃;
(7) screening: the cooled potash magnesium sulphate fertilizer raw material of 2 millimeters-4.5 millimeters of particle diameters of screening, obtain potash magnesium sulphate fertilizer, wherein contain mass percent and be 26% K
2O.
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 (9)
1. potash magnesium sulphate fertilizer, it is characterized in that: said potash magnesium sulphate fertilizer is a spherical particle.
2. potash magnesium sulphate fertilizer according to claim 1 is characterized in that: said potash magnesium sulphate fertilizer is prepared from following step: with potash magnesium sulphate fertilizer raw material crushing, mixing, granulation, oven dry, cooling, screening, obtain potash magnesium sulphate fertilizer; Said granulation step is with granulating disc or cylinder tablets press atomized water spray or steam granulation.
3. the method for manufacture of claim 1 or 2 described a kind of potash magnesium sulphate fertilizers; Comprise the step of potash magnesium sulphate fertilizer raw material crushing, mixing, granulation, oven dry, cooling, screening, it is characterized in that: said granulation step is with granulating disc or cylinder tablets press atomized water spray or steam granulation.
4. method of manufacture according to claim 3 is characterized in that: the rotating speed of said granulating disc is 6-14 rev/min, and the obliquity of disk is the 30-40 degree.
5. method of manufacture according to claim 4 is characterized in that: the rotating speed of said granulating disc is 10 rev/mins, and the obliquity of disk is 35 degree.
6. method of manufacture according to claim 3 is characterized in that: the rotating speed of said cylinder tablets press is 4-10 rev/min, and the obliquity of the granulation cylinder of said cylinder tablets press is the 2-10 degree.
7. method of manufacture according to claim 6 is characterized in that: the rotating speed of said cylinder tablets press is 7 rev/mins, and the obliquity of the granulation cylinder of said cylinder tablets press is 5 degree.
8. method of manufacture according to claim 3 is characterized in that: the bake out temperature of said baking step is 480 ℃-520 ℃.
9. method of manufacture according to claim 3 is characterized in that: K in the said potash magnesium sulphate fertilizer
2The quality percentage composition of O is 22%-26%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110255108A CN102320867A (en) | 2011-08-31 | 2011-08-31 | Sulphate-potassium magnesium fertilizer and preparation method thereof |
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| CN201110255108A CN102320867A (en) | 2011-08-31 | 2011-08-31 | Sulphate-potassium magnesium fertilizer and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102850124A (en) * | 2012-09-04 | 2013-01-02 | 深圳市芭田生态工程股份有限公司 | Sulphate-potassium magnesium fertilizer and preparation method thereof |
| CN104446768A (en) * | 2014-11-17 | 2015-03-25 | 常熟市梅李镇香园稻米专业合作社 | Biofertilizer with stable and long-lasting fertilizer efficiency |
| CN107365180A (en) * | 2017-05-25 | 2017-11-21 | 滕国清 | Manufacture the production method of potassium magnesium sulfate particle and the purposes of potassium magnesium sulfate particle |
| CN111233558A (en) * | 2020-04-08 | 2020-06-05 | 烟台农丰农业科技有限公司 | Potassium magnesium sulfate fertilizer and preparation method thereof |
| CN112592210A (en) * | 2020-12-31 | 2021-04-02 | 国投新疆罗布泊钾盐有限责任公司 | Preparation method of potash magnesium sulphate fertilizer spherical particles |
| CN112592209A (en) * | 2020-12-31 | 2021-04-02 | 国投新疆罗布泊钾盐有限责任公司 | Spherical granulation method for potash magnesium sulphate fertilizer |
| CN113511946A (en) * | 2021-08-23 | 2021-10-19 | 卡力(烟台)农业发展有限公司 | Extrusion granulation process of fertilizer |
| CN114041529A (en) * | 2021-11-29 | 2022-02-15 | 青海蓝湖善成生物技术有限公司 | Preparation method of picromerite and picromerite feed |
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| US5102441A (en) * | 1983-09-07 | 1992-04-07 | Kali And Salz Ag | Method of making a langbeinite slurry as a binder for mgo-containing fertilizers and fertilizers therefrom |
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2011
- 2011-08-31 CN CN201110255108A patent/CN102320867A/en active Pending
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| US5102441A (en) * | 1983-09-07 | 1992-04-07 | Kali And Salz Ag | Method of making a langbeinite slurry as a binder for mgo-containing fertilizers and fertilizers therefrom |
| CN1785917A (en) * | 2005-12-08 | 2006-06-14 | 李书礼 | Potassium magnesium fertilizer and its preparation method |
Non-Patent Citations (1)
| Title |
|---|
| 方天翰主编: "《复混肥料生产技术手册》", 31 December 2003, article "《复混肥料生产技术手册》", pages: 79-84 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102850124A (en) * | 2012-09-04 | 2013-01-02 | 深圳市芭田生态工程股份有限公司 | Sulphate-potassium magnesium fertilizer and preparation method thereof |
| CN104446768A (en) * | 2014-11-17 | 2015-03-25 | 常熟市梅李镇香园稻米专业合作社 | Biofertilizer with stable and long-lasting fertilizer efficiency |
| CN107365180A (en) * | 2017-05-25 | 2017-11-21 | 滕国清 | Manufacture the production method of potassium magnesium sulfate particle and the purposes of potassium magnesium sulfate particle |
| CN111233558A (en) * | 2020-04-08 | 2020-06-05 | 烟台农丰农业科技有限公司 | Potassium magnesium sulfate fertilizer and preparation method thereof |
| CN112592210A (en) * | 2020-12-31 | 2021-04-02 | 国投新疆罗布泊钾盐有限责任公司 | Preparation method of potash magnesium sulphate fertilizer spherical particles |
| CN112592209A (en) * | 2020-12-31 | 2021-04-02 | 国投新疆罗布泊钾盐有限责任公司 | Spherical granulation method for potash magnesium sulphate fertilizer |
| CN113511946A (en) * | 2021-08-23 | 2021-10-19 | 卡力(烟台)农业发展有限公司 | Extrusion granulation process of fertilizer |
| CN114041529A (en) * | 2021-11-29 | 2022-02-15 | 青海蓝湖善成生物技术有限公司 | Preparation method of picromerite and picromerite feed |
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Application publication date: 20120118 |