CN102992275B - Production method for producing calcium superphosphate by using phosphoric acid sludge - Google Patents
Production method for producing calcium superphosphate by using phosphoric acid sludge Download PDFInfo
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- CN102992275B CN102992275B CN201210457927.9A CN201210457927A CN102992275B CN 102992275 B CN102992275 B CN 102992275B CN 201210457927 A CN201210457927 A CN 201210457927A CN 102992275 B CN102992275 B CN 102992275B
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- phosphoric acid
- calcium superphosphate
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- acid sludge
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Abstract
The invention relates to a production method for producing calcium superphosphate by using phosphoric acid sludge. The production method comprises the following steps of: mixing the phosphoric acid sludge and phosphorous ore according to a mass ratio of 1:(2-3) to obtain a mixture, mixing the mixture with industrial water to enter into a ball mill to obtain ore pulp, reacting the prepared ore pulp with sulfuric acid, controlling the ratio of the phosphorous ore to the sulfuric acid to be (2-3):1, and reacting at the reaction temperature of 105-120 DEG C to obtain the calcium superphosphate. According to the production method for producing the calcium superphosphate by using the phosphoric acid sludge, provided by the invention, the phosphoric acid sludge is added in the production process, and the usage amount of the phosphorous ore is reduced, thus the production cost is reduced, the secondary utilization of the phosphoric acid sludge is realized, and the pollution of the phosphoric acid sludge to environments is reduced. The water of the ore pulp is easy to control and has good mobility in the production process so that the ore pulp is convenient to technically control and convey in a pipeline. The calcium superphosphate obtained through the method can reach the national standard requirement of first-grade products.
Description
Technical field
The present invention relates to a kind of production method of calcium superphosphate, be specifically related to a kind of production method utilizing phosphoric acid production to produce calcium superphosphate.
Background technology
Phosphoric acid slag gathers dust when being phosphorus production thing, formed through baked wheaten cake, neutralizing treatment has also been done with lime in centre, in addition phosphorus slag is also containing things such as undecomposed phosphorus ores, conventional is landfill disposal, can cause the pollution to environment, the usual phosphorus content of phosphoric acid slag is about 30 percent, as the waste that can cause resource that is not used.
Summary of the invention
For the deficiencies in the prior art, object of the present invention will provide exactly can make full use of phosphoric acid slag, reduce the processing costs of phosphoric acid slag as solid waste, reduce environmental pollution, reduce the usage quantity of phosphorus ore in Production of Single Superphosphate, reduce production cost, utilize phosphoric acid slag to produce the production method of calcium superphosphate.
The object of the present invention is achieved like this: a kind of production method utilizing phosphoric acid slag to produce calcium superphosphate, phosphoric acid slag and phosphorus ore are obtained mixture after carrying out mixture in 1:2 ~ 3 in mass ratio, mixture is mixed with process water laggard enter ball mill obtain ore pulp, the ore pulp made and sulfuric acid reaction, control material proportion is ore pulp: sulfuric acid=2 ~ 3:1, carries out being obtained by reacting calcium superphosphate at temperature of reaction is 105 ~ 120 DEG C.
When mixture mixes with process water, the mass ratio of mixture and process water is 1:0.36 ~ 0.40.
Described sulfuric acid concentration is 98%.
Mass ratio when phosphoric acid slag and phosphorus ore mixture is phosphoric acid slag: phosphorus ore=1:2.5.
In reaction process, control material proportion is ore pulp: sulfuric acid=2.5:1.
Not only the production method utilizing phosphoric acid slag to produce calcium superphosphate provided by the invention, with the addition of phosphoric acid slag in process of production, decreases the usage quantity of phosphorus ore, reduce production cost but also make phosphoric acid slag obtain second stage employ, decrease the pollution of phosphoric acid slag to environment.Production process chats pulp-water divide be easy to control, good fluidity, is convenient to technology controlling and process and the Cemented filling of ore pulp.The calcium superphosphate obtained by present method can reach the requirement of GB acceptable end product.
Embodiment
Embodiment 1: a kind of production method utilizing phosphoric acid slag to produce calcium superphosphate, get after 100Kg phosphoric acid slag and 200Kg phosphorus ore carry out mixture and obtain mixture, mixture is mixed with 108Kg process water laggard enter ball mill obtain ore pulp, the ore pulp made and sulfuric acid reaction, control material proportion is ore pulp: sulfuric acid=2:1, carries out being obtained by reacting calcium superphosphate at temperature of reaction is 105 ~ 120 DEG C.
Embodiment 2: a kind of production method utilizing phosphoric acid slag to produce calcium superphosphate, get after 100Kg phosphoric acid slag and 300Kg phosphorus ore carry out mixture and obtain mixture, mixture is mixed with 200Kg process water laggard enter ball mill obtain ore pulp, the ore pulp made and sulfuric acid reaction, control material proportion is ore pulp: sulfuric acid=2.5:1, carries out being obtained by reacting calcium superphosphate at temperature of reaction is 105 ~ 120 DEG C.
Embodiment 3: a kind of production method utilizing phosphoric acid slag to produce calcium superphosphate, get after 100Kg phosphoric acid slag and 250Kg phosphorus ore carry out mixture and obtain mixture, mixture is mixed with 210Kg process water laggard enter ball mill obtain ore pulp, the ore pulp made and sulfuric acid reaction, control material proportion is ore pulp: sulfuric acid=3:1, carries out being obtained by reacting calcium superphosphate at temperature of reaction is 105 ~ 120 DEG C.
In above-described embodiment, sulfuric acid concentration used is 98%.
Claims (1)
1. the production method utilizing phosphoric acid slag to produce calcium superphosphate, it is characterized in that: by phosphoric acid slag and phosphorus ore in mass ratio 1: 2.5 carry out mixture after obtain mixture, mixture is mixed with process water laggard enter ball mill obtain ore pulp, the ore pulp made and sulfuric acid reaction, control material proportion is ore pulp: sulfuric acid=2.5: 1, carry out being obtained by reacting calcium superphosphate at temperature of reaction is 105 ~ 120 DEG C, when mixture mixes with process water, the mass ratio of mixture and process water is 1:0.36 ~ 0.40; Described sulfuric acid concentration is 98%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210457927.9A CN102992275B (en) | 2012-11-15 | 2012-11-15 | Production method for producing calcium superphosphate by using phosphoric acid sludge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210457927.9A CN102992275B (en) | 2012-11-15 | 2012-11-15 | Production method for producing calcium superphosphate by using phosphoric acid sludge |
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| Publication Number | Publication Date |
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| CN102992275A CN102992275A (en) | 2013-03-27 |
| CN102992275B true CN102992275B (en) | 2015-07-22 |
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| CN201210457927.9A Active CN102992275B (en) | 2012-11-15 | 2012-11-15 | Production method for producing calcium superphosphate by using phosphoric acid sludge |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934114A (en) * | 2014-04-22 | 2014-07-23 | 甘肃瓮福化工有限责任公司 | Beneficiation method for medium-low-grade phosphate ores |
| CN104016307A (en) * | 2014-06-13 | 2014-09-03 | 云南三环中化化肥有限公司 | Comprehensive utilization method for wet phosphoric acid dregs |
| CN104229763B (en) * | 2014-09-24 | 2016-04-20 | 云南天安化工有限公司 | A kind of defluorination process of phosphorus production ground phosphate rock |
| CN106380231A (en) * | 2016-08-30 | 2017-02-08 | 甘肃瓮福化工有限责任公司 | Method for producing calcium superphosphate with phosphate rock tailings and phosphoric acid sludge |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5002744A (en) * | 1990-05-11 | 1991-03-26 | Imc Fertilizer, Inc. | Method for defluorinating wet process phosphoric acid |
| CN1206701A (en) * | 1998-04-27 | 1999-02-03 | 威远县磷钙饲料厂 | Process for producing calcium superphosphate from defluorinated slag |
| CN101381077A (en) * | 2008-10-17 | 2009-03-11 | 昆明理工大学 | Method for preparing dicalcium phosphate from yellow phosphorus slag |
| CN102351448A (en) * | 2011-07-07 | 2012-02-15 | 贵州凯德邦高新技术实业有限公司 | Modification and innocuous treatment method of phosphogypsum |
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2012
- 2012-11-15 CN CN201210457927.9A patent/CN102992275B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5002744A (en) * | 1990-05-11 | 1991-03-26 | Imc Fertilizer, Inc. | Method for defluorinating wet process phosphoric acid |
| CN1206701A (en) * | 1998-04-27 | 1999-02-03 | 威远县磷钙饲料厂 | Process for producing calcium superphosphate from defluorinated slag |
| CN101381077A (en) * | 2008-10-17 | 2009-03-11 | 昆明理工大学 | Method for preparing dicalcium phosphate from yellow phosphorus slag |
| CN102351448A (en) * | 2011-07-07 | 2012-02-15 | 贵州凯德邦高新技术实业有限公司 | Modification and innocuous treatment method of phosphogypsum |
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| CN102992275A (en) | 2013-03-27 |
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