CN104787739A - Powdered monoammonium phosphate with 60% of total nutrient and production method - Google Patents
Powdered monoammonium phosphate with 60% of total nutrient and production method Download PDFInfo
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- CN104787739A CN104787739A CN201410749983.9A CN201410749983A CN104787739A CN 104787739 A CN104787739 A CN 104787739A CN 201410749983 A CN201410749983 A CN 201410749983A CN 104787739 A CN104787739 A CN 104787739A
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- phosphoric acid
- monoammonium phosphate
- phosphate
- production method
- neutralization
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Abstract
Disclosed are powdered monoammonium phosphate with 60% of total nutrient and a production method. The production method comprises the following steps: A, flotation of ore pulp, B, extraction of phosphoric acid, C, neutralization and concentration, and D, spray drying. In the step of neutralization and concentration, phosphoric acid and liquefied ammonia are subjected to a neutralization reaction in a fast reactor; a neutralization degree is controlled in 1.03-1.05; and the density of the product can reach 1.52-1.54 g/cm3 via repeating concentration. In the step of spray drying, the concentrated slurry is conveyed to a drying tower via a high-pressure pump and is subjected to counter-current atomization with hot wind to obtain qualified powdered monoammonium phosphate. The invention is advantaged in that powdered monoammonium phosphate with 60% of total nutrient can be produced; the content of phosphoric pentoxide can reach 49%; the nitrogen content can reach 11%; and the nutrient content is high.
Description
Technical field
The present invention relates to agricultural fertilizer field, be specifically related to powdery monoammonium phosphate and production method that a kind of total nutrient is 60%.
Background technology
At present, known powdery monoammonium phosphate generally by Rock Phosphate (72Min BPL), sulfuric acid, liquefied ammonia etc. for raw material is produced, the general Vanadium Pentoxide in FLAKES of its product is all 48%, and nitrogen content is all 10%, and this formula cannot meet the different demand in market.
Summary of the invention
Object of the present invention is exactly at present, known powdery monoammonium phosphate generally by Rock Phosphate (72Min BPL), sulfuric acid, liquefied ammonia etc. for raw material is produced, the general Vanadium Pentoxide in FLAKES of its product is all more than 48%, and nitrogen content is all more than 10%, and this formula cannot meet the different demand in market.
The present invention utilizes the method for low grade ore height nutrient powdery monoammonium phosphate, it is characterized in that production craft step is as follows:
A, flotation pulp: above-mentioned Rock Phosphate (72Min BPL) is first ground to form phosphate ore pulp, carry out reverse flotation by adding flotation agent;
B, phosphoric acid extraction: the concentrate slurry after above-mentioned flotation is sent into phosphoric acid extraction groove, by adding sulfuric acid and its reaction, and then extract the phosphoric acid of 22%.
C, neutralization are concentrated: during phosphoric acid and liquefied ammonia are carried out in flashing reactor with, degree of neutralization controls about 1.04, reaches 1.52-1.54g/cm through concentration densities repeatedly
3.
D, atomization drying: finally the slip high-pressure pump after concentrated is sent to drying tower and hot blast carries out adverse current atomization, obtain qualified powdery monoammonium phosphate.
Raw material consumption is:
Rock Phosphate (72Min BPL): content 22%-24%, unit consumption is 2.5;
Sulfuric acid: concentration is 98%, unit consumption is 1.41;
Liquefied ammonia: unit consumption is 0.140.
Advantage of the present invention is: can produce the powdery monoammonium phosphate that total nutrient is 60%, phosphorus pentoxide content reaches 49%, and nitrogen content reaches 11%, has nutrient advantages of higher.
Embodiment
Main raw material of the present invention is main raw material is Rock Phosphate (72Min BPL), sulfuric acid, liquefied ammonia, and its production craft step is as follows:
A, flotation pulp: above-mentioned Rock Phosphate (72Min BPL) is first ground to form phosphate ore pulp, using reverse floatation process to be removed by the magnesium addition in ore pulp by adding flotation agent, improving the phosphorus content of phosphate ore pulp simultaneously.
B, phosphoric acid extraction: the concentrate slurry after above-mentioned flotation is sent into phosphoric acid extraction groove, by adding sulfuric acid and its reaction, and then extract the phosphoric acid of 22%.
C, neutralization are concentrated: during phosphoric acid and liquefied ammonia are carried out in flashing reactor and, degree of neutralization controls about 1.04, through repeatedly concentrating the density reaching regulation.
D, atomization drying: finally the slip high-pressure pump after concentrated is sent to drying tower and hot blast carries out adverse current atomization, and then obtain qualified powder ammonium phosphate.
Raw material consumption is:
Rock Phosphate (72Min BPL): content 22%-24%, unit consumption is 2.5;
Sulfuric acid: concentration is 98%, unit consumption is 1.41;
Liquefied ammonia: unit consumption is 0.140.
Claims (2)
1. total nutrient is a powdery monoammonium phosphate production method of 60%, it is characterized in that production craft step is as follows:
A, flotation pulp: above-mentioned Rock Phosphate (72Min BPL) is first ground to form phosphate ore pulp, carry out reverse flotation by adding flotation agent;
B, phosphoric acid extraction: the concentrate slurry after above-mentioned flotation is sent into phosphoric acid extraction groove, by adding sulfuric acid and its reaction, phosphoric acid extraction;
C, neutralization are concentrated: during phosphoric acid and liquefied ammonia are carried out in flashing reactor with, degree of neutralization controls at 1.03-1.05, reaches 1.52-1.54g/cm through concentration densities repeatedly
3;
D, atomization drying: finally the slip high-pressure pump after concentrated is sent to drying tower and hot blast carries out adverse current atomization, obtain qualified powdery monoammonium phosphate.
2. a kind of total nutrient according to claim 1 is powdery monoammonium phosphate and the production method of 60%, it is characterized in that raw material consumption is:
Rock Phosphate (72Min BPL): content 22%-24%, unit consumption is 2.5;
Sulfuric acid: concentration is 98%, unit consumption is 1.41;
Liquefied ammonia: unit consumption is 0.140.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749983.9A CN104787739A (en) | 2014-12-10 | 2014-12-10 | Powdered monoammonium phosphate with 60% of total nutrient and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410749983.9A CN104787739A (en) | 2014-12-10 | 2014-12-10 | Powdered monoammonium phosphate with 60% of total nutrient and production method |
Publications (1)
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| CN104787739A true CN104787739A (en) | 2015-07-22 |
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| CN201410749983.9A Pending CN104787739A (en) | 2014-12-10 | 2014-12-10 | Powdered monoammonium phosphate with 60% of total nutrient and production method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105540562A (en) * | 2015-12-30 | 2016-05-04 | 川恒生态科技有限公司 | Method for directly producing high-nutrition monoammonium phosphate from hemi-hydrate process wet process phosphoric acid |
| CN105712748A (en) * | 2015-12-29 | 2016-06-29 | 荆门新洋丰中磷肥业有限公司 | Production process for producing high-nutrient monoammonium phosphate from low-grade phosphorus ore |
| CN110316710A (en) * | 2019-07-04 | 2019-10-11 | 安徽省司尔特肥业股份有限公司 | A kind of production technology of high nutrient powdery monoammonium phosphate |
| CN110396007A (en) * | 2018-11-27 | 2019-11-01 | 湖北新洋丰肥业股份有限公司 | A kind of preparation process of ecotype monoammonium phosphate |
| CN112125707A (en) * | 2020-09-27 | 2020-12-25 | 安徽省司尔特肥业股份有限公司 | Production method of high-nutrient powdery monoammonium phosphate |
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| CN102745659A (en) * | 2012-07-19 | 2012-10-24 | 瓮福（集团）有限责任公司 | Method for preparing powdery ammonium dihydrogen phosphate |
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| CN102745659A (en) * | 2012-07-19 | 2012-10-24 | 瓮福（集团）有限责任公司 | Method for preparing powdery ammonium dihydrogen phosphate |
| CN103848407A (en) * | 2013-04-02 | 2014-06-11 | 襄阳泽东化工集团有限公司 | Monoammonium phosphate production method |
| CN103212484A (en) * | 2013-04-18 | 2013-07-24 | 武汉工程大学 | Phosphorite reverse flotation process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105712748A (en) * | 2015-12-29 | 2016-06-29 | 荆门新洋丰中磷肥业有限公司 | Production process for producing high-nutrient monoammonium phosphate from low-grade phosphorus ore |
| CN105540562A (en) * | 2015-12-30 | 2016-05-04 | 川恒生态科技有限公司 | Method for directly producing high-nutrition monoammonium phosphate from hemi-hydrate process wet process phosphoric acid |
| CN110396007A (en) * | 2018-11-27 | 2019-11-01 | 湖北新洋丰肥业股份有限公司 | A kind of preparation process of ecotype monoammonium phosphate |
| CN110316710A (en) * | 2019-07-04 | 2019-10-11 | 安徽省司尔特肥业股份有限公司 | A kind of production technology of high nutrient powdery monoammonium phosphate |
| CN110316710B (en) * | 2019-07-04 | 2023-01-10 | 安徽省司尔特肥业股份有限公司 | Production process of high-nutrient powdery monoammonium phosphate |
| CN112125707A (en) * | 2020-09-27 | 2020-12-25 | 安徽省司尔特肥业股份有限公司 | Production method of high-nutrient powdery monoammonium phosphate |
| CN112125707B (en) * | 2020-09-27 | 2022-04-08 | 安徽省司尔特肥业股份有限公司 | Production method of high-nutrient powdery monoammonium phosphate |
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Application publication date: 20150722 |