CN104761295A - Production method of calcium superphosphate - Google Patents
Production method of calcium superphosphate Download PDFInfo
- Publication number
- CN104761295A CN104761295A CN201510113423.9A CN201510113423A CN104761295A CN 104761295 A CN104761295 A CN 104761295A CN 201510113423 A CN201510113423 A CN 201510113423A CN 104761295 A CN104761295 A CN 104761295A
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- China
- Prior art keywords
- phosphoric acid
- reaction
- powder
- sludge
- magnesium
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Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B9/00—Fertilisers based essentially on phosphates or double phosphates of magnesium
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a production method of calcium superphosphate. In the method, sludge dreg after plate-frame filtration of strong phosphoric acid is mixed with the sludge dreg generated during concentration of wet-process phosphoric acid according to a certain proportion to consume the sludge dreg so that guarantee of purification and gradient utilization of phosphoric acid is provided. The sludge dreg is blended with water and then is added with a proper amount of tailing powder of phosphors ore, magnesium powder and calcium carbonate. After a reaction for a certain time, the reacted material is fed to a drying section to obtain a dried product. The dried product is sieved and packaged to obtain the high-magnesium calcium superphosphate. The method can recycle the elements of phosphorus and magnesium in tailings of phosphorus ore floatation, thereby turning the waste into resources and further increasing additional value of the phosphorus ore. What is more, the method can be used for preparing high-quality calcium superphosphate product, is low in production cost, and can achieve huge economic, social and environmental-protective benefits.
Description
Technical field
The present invention relates to the general calcium product of high magnesium, specifically, is a kind ofly utilize the method that strong phosphoric acid sludge and phosphate ore flotation tailings are the general calcium of raw material production height magnesium.
Background technology
Saturated along with domestic phosphorus ammonium market; there is crisis in the sale at home of common diammonium phosphate; and world market is relatively considerable to the demand of diammonium phosphate; but it is higher to the quality requirements of diammonium phosphate; produce for meeting high-end two ammoniums; primary solution be exactly improve phosphoric acid quality, phosphoric acid purification seems particularly important.In phosphoric acid purification process, the a large amount of sludges produced are difficult problems of sulphur dioxide of phosphor chemical industry, if its simple process is sold with the general calcium of low side, can because the value of phosphorus can not get embodying, and produce huge financial loss, therefore how making good use of the sludge produced in strong phosphoric acid scavenging process is the problem that phosphorous chemical industry practitioner is concerned about very much.
Containing a large amount of element such as phosphorus, sulphur, magnesium in phosphoric acid sludge, in conjunction with on foreign market to the conditions of demand of the elements such as phosphorus, sulphur, magnesium, phosphoric acid sludge is developed into the general calcium product of high magnesium with focal need, good economic benefit can be produced.This patent, just based on this demand, simultaneously in conjunction with my company's own characteristic, develops the general calcium product of this high magnesium.
Summary of the invention
Object of the present invention is devoted to the production method of seeking a kind of general calcium, to obtain the general calcium product of high-quality height magnesium, to meet New Zealand's market requirement.
The present invention realizes by the following technical solutions, concrete steps are: sized mixing by a certain percentage by the sludge after strong phosphoric acid Plate Filtration, then appropriate phosphorite tailings powder, magnesium powder and calcium carbonate is added, after reaction certain hour, by mass transport to drying section, dried product is through sieving, being packaged to be the general calcium product of high magnesium;
The main component of described strong phosphoric acid sludge is as follows:
| Index | Total P 2O 5 | Water-soluble P 2O 5 | Moisture |
| Content (%) | 20~30 | 15~20 | 40~60 |
；
The main component of described phosphate ore flotation tailings is as follows:
| Index | P 2O 5 | MgO | Moisture |
| Content (%) | 7~9 | 14~16 | ≤7 |
Described calcium powder is Wingdale, and its calcium oxide content is more than 90%;
Described magnesium powder is light calcined magnesia, and its content of magnesia is more than 85%;
The concrete technology parameter of described reaction is:
In reaction strong phosphoric acid sludge size mixing after pulp density be: 70% ~ 75%;
In reaction, the mass ratio of strong phosphoric acid sludge and phosphorite tailings powder is: (1.5 ~ 2.5): 1;
In reaction, the mass ratio of strong phosphoric acid sludge and Paris white is: (4 ~ 10): 1;
In reaction, the mass ratio of strong phosphoric acid sludge and light calcined magnesia is: (6 ~ 10): 1
Reaction times is 15 ~ 60min.
Described reaction initial temperature is 10 ~ 50 DEG C.
Beneficial effect of the present invention is mainly reflected in some: (1) consumes the sludge produced in wet-process phosphoric acid concentration, for the cascade utilization of phosphoric acid purification and phosphoric acid provides safeguard; (2) reclaim phosphorus, the magnesium elements in phosphate ore flotation tailings, turn waste into wealth, improve the added value of phosphorus ore; (3) production method of the present invention can obtain the general calcium product of high-quality height magnesium, and products production cost is low, has huge economic benefit, social benefit and environmental benefit.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
Further illustrate the present invention below by way of specific embodiment, but be not used for limiting the scope of the invention.
embodiment 1
Get 150g strong phosphoric acid sludge, its total P
2o
5be 21.2%, water-soluble P
2o
5be 18.3%, adding water move to pulp density is 25%, adds 65g phosphate ore flotation tailings, P in mine tailing
2o
5be 8.2%, magnesium oxide is 15.1%, after stirring, add magnesium oxide 20g, calcium powder 20g, after reaction 15min, material is carried out drying, namely obtains the general calcium product of high magnesium.Product by analysis its main component is: total P
2o
5be 16.2%, free acid content is 0, and content of magnesia is 10.4%, and sulfate radical content is 10.3%, and quality product meets the requirement of the general calcium of New Zealand's market height magnesium.
embodiment 2
Get 150g strong phosphoric acid sludge, its total P
2o
5be 21.2%, water-soluble P
2o
5be 18.3%, adding water move to pulp density is 25%, adds 90g phosphate ore flotation tailings, P in mine tailing
2o
5be 8.2%, magnesium oxide is 15.1%, after stirring, add magnesium oxide 25g, calcium powder 20g, after reaction 20min, material is carried out drying, namely obtains the general calcium product of high magnesium.Product by analysis its main component is: total P
2o
5be 15.8%, free acid content is 0, and content of magnesia is 12.7%, and sulfate radical content is 9.3%, and quality product meets the requirement of the general calcium of New Zealand's market height magnesium.
embodiment 3
Get 150g strong phosphoric acid sludge, its total P
2o
5be 21.2%, water-soluble P
2o
5be 18.3%, adding water move to pulp density is 25%, adds 70g phosphate ore flotation tailings, P in mine tailing
2o
5be 8.2%, magnesium oxide is 15.1%, after stirring, add magnesium oxide 15g, calcium powder 25g, after reaction 60min, material is carried out drying, namely obtains the general calcium product of high magnesium.Product by analysis its main component is: total P
2o
5be 16.6%, free acid content is 0, and content of magnesia is 11.3%, and sulfate radical content is 10.7%, and quality product meets the requirement of the general calcium of New Zealand's market height magnesium.
Claims (2)
1. the production method of a general calcium, it is characterized in that, sludge after strong phosphoric acid Plate Filtration is sized mixing by a certain percentage, then appropriate phosphate ore flotation tailings powder, magnesium powder and calcium powder is added, after reaction certain hour, by mass transport to drying section, dried product is through sieving, being packaged to be the general calcium product of high magnesium;
The main component of described strong phosphoric acid sludge is as follows:
；
The main component of described phosphate ore flotation tailings powder is as follows:
；
Described calcium powder is Wingdale, and its calcium oxide content is more than 90%;
Described magnesium powder is light calcined magnesia, and its content of magnesia is more than 85%;
The concrete technology parameter of described reaction is:
In reaction strong phosphoric acid sludge size mixing after pulp density be: 70% ~ 75%;
In reaction, the mass ratio of strong phosphoric acid sludge and phosphate ore flotation tailings powder is: (1.5 ~ 2.5): 1;
In reaction, the mass ratio of strong phosphoric acid sludge and calcium powder is: (4 ~ 10): 1;
In reaction, the mass ratio of strong phosphoric acid sludge and magnesium powder is: (6 ~ 10): 1
Reaction times is 15 ~ 60min.
2. the production method of general calcium according to claim 1, is characterized in that, reaction initial temperature is 10 ~ 50 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510113423.9A CN104761295A (en) | 2015-03-16 | 2015-03-16 | Production method of calcium superphosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510113423.9A CN104761295A (en) | 2015-03-16 | 2015-03-16 | Production method of calcium superphosphate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104761295A true CN104761295A (en) | 2015-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510113423.9A Pending CN104761295A (en) | 2015-03-16 | 2015-03-16 | Production method of calcium superphosphate |
Country Status (1)
| Country | Link |
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| CN (1) | CN104761295A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130508A (en) * | 2015-09-18 | 2015-12-09 | 云南三环中化化肥有限公司 | Production method for double phosphate fertilizer |
| CN105439646A (en) * | 2015-08-26 | 2016-03-30 | 云南三环中化化肥有限公司 | Method for producing phosphorus magnesia fertilizer by using wet phosphoric acid residues |
| CN105600992A (en) * | 2016-02-14 | 2016-05-25 | 瓮福（集团）有限责任公司 | Technology for preparing feed calcium from wastewater residues |
| CN110921642A (en) * | 2019-12-18 | 2020-03-27 | 瓮福（集团）有限责任公司 | Method and device for treating phosphoric acid slurry by wet process |
Citations (6)
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|---|---|---|---|---|
| CN101591011A (en) * | 2009-07-06 | 2009-12-02 | 马健 | Processing spent acid is the method for calcium hydrophosphate fertilizer |
| CN100584805C (en) * | 2008-09-27 | 2010-01-27 | 瓮福（集团）有限责任公司 | Method for producing sulfur-magnesium fertilizer by high magnesium phosphorus tails |
| CN102815681A (en) * | 2012-06-21 | 2012-12-12 | 中化云龙有限公司 | Method for producing feed-grade calcium dihydrogen phosphate from wet-process phosphoric acid |
| CN103553722A (en) * | 2013-10-24 | 2014-02-05 | 瓮福（集团）有限责任公司 | Method for preparing super phosphate by use of ardealite slag site sewage |
| CN104071757A (en) * | 2014-07-16 | 2014-10-01 | 云南常青树化工有限公司 | Preparation method of enriched superphosphate |
| CN104326464A (en) * | 2014-10-22 | 2015-02-04 | 昆明川金诺化工股份有限公司 | Method for preparing high-quality calcium superphosphate in process of producing feed-grade calcium hydrophosphate |
-
2015
- 2015-03-16 CN CN201510113423.9A patent/CN104761295A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100584805C (en) * | 2008-09-27 | 2010-01-27 | 瓮福（集团）有限责任公司 | Method for producing sulfur-magnesium fertilizer by high magnesium phosphorus tails |
| CN101591011A (en) * | 2009-07-06 | 2009-12-02 | 马健 | Processing spent acid is the method for calcium hydrophosphate fertilizer |
| CN102815681A (en) * | 2012-06-21 | 2012-12-12 | 中化云龙有限公司 | Method for producing feed-grade calcium dihydrogen phosphate from wet-process phosphoric acid |
| CN103553722A (en) * | 2013-10-24 | 2014-02-05 | 瓮福（集团）有限责任公司 | Method for preparing super phosphate by use of ardealite slag site sewage |
| CN104071757A (en) * | 2014-07-16 | 2014-10-01 | 云南常青树化工有限公司 | Preparation method of enriched superphosphate |
| CN104326464A (en) * | 2014-10-22 | 2015-02-04 | 昆明川金诺化工股份有限公司 | Method for preparing high-quality calcium superphosphate in process of producing feed-grade calcium hydrophosphate |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105439646A (en) * | 2015-08-26 | 2016-03-30 | 云南三环中化化肥有限公司 | Method for producing phosphorus magnesia fertilizer by using wet phosphoric acid residues |
| CN105130508A (en) * | 2015-09-18 | 2015-12-09 | 云南三环中化化肥有限公司 | Production method for double phosphate fertilizer |
| CN105130508B (en) * | 2015-09-18 | 2019-04-05 | 云南三环中化化肥有限公司 | A kind of double production methods for burning phosphate fertilizer |
| CN105600992A (en) * | 2016-02-14 | 2016-05-25 | 瓮福（集团）有限责任公司 | Technology for preparing feed calcium from wastewater residues |
| CN110921642A (en) * | 2019-12-18 | 2020-03-27 | 瓮福（集团）有限责任公司 | Method and device for treating phosphoric acid slurry by wet process |
| CN110921642B (en) * | 2019-12-18 | 2023-12-26 | 瓮福（集团）有限责任公司 | Wet-process phosphoric acid slurry treatment method and device |
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