CN102219198A - Multifunctional sinking agent used in production of phosphoric acid by wet method - Google Patents
Multifunctional sinking agent used in production of phosphoric acid by wet method Download PDFInfo
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- CN102219198A CN102219198A CN 201110112966 CN201110112966A CN102219198A CN 102219198 A CN102219198 A CN 102219198A CN 201110112966 CN201110112966 CN 201110112966 CN 201110112966 A CN201110112966 A CN 201110112966A CN 102219198 A CN102219198 A CN 102219198A
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- phosphoric acid
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- sinking agent
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Abstract
The invention relates to a multifunctional sinking agent used in production of phosphoric acid by a wet method. The multifunctional sinking agent is characterized by being prepared by mixing a non-ionic flocculating agent, a coagulation flocculation adsorbent and an anionic surfactant according to a mass ratio of 10-20:60-80:10-20. The invention provides a multifunctional sinking agent for removing impurities in coarse phosphoric acid in the process of producing phosphoric acid by a wet method. According to the invention, the multifunctional sinking agent can be completely settled; the height of base solution is low; the preparation method for the agent is simple; the cost is low; the agent has scale inhibition efficiency to the next procedure and can improve brightness and crystallization of diammonium phosphate granules to be produced.
Description
Technical field
The present invention relates to phosphate fertilizer manufacturing technology field, especially a kind of multi-functional sinking agent used when being used for Wet-process Phosphoric Acid Production and removing impurity in the phosphoric acid.
Background technology
In the production of phosphoric acid by wet process, especially use the phosphoric acid by wet process of mid low grade phosphate rock stone production, after it is concentrated, can produce a large amount of solidss, reduction along with thickening temperature, can produce the postprecipitation thing again, add that the phosphoric acid material was to the abrasion of graphite evaporator when organism was carbonized and concentrates when Rock Phosphate (72Min BPL) leaches, making mass concentration is 48%P
2O
5Solids quality content in the raw phosphoric acid of phosphoric acid by wet process reaches more than 2.6%.These solidss are collectively referred to as sludge, and are also quite unfavorable to the subsequent handling of phosphoric acid.Therefore, sludge must be removed.
At present, the solid-liquid separation technique of solution has: natural sedimentation, waterpower (liquid stream) are forced settling process, chemical deposition method, centrifugal filtration process, plain gauze filtration method, membrane filter method (comprising micro-filtration, ultrafiltration, infiltration and reverse osmosis) ion exchange method, electrodialysis and chromatographic technique.In production practice, the most frequently used and be to adopt chemical deposition method that the dispersed substance particle in the solution is settled down particulate (comprising the particulate in the colloidal solution) reunion wherein with adding coagulating agent or flocculation agent (general designation sedimentation medicament) than the method for simple cheap, and then adopt centrifugation or various filter method that it is carried out solid-liquid separation, to remove to fall impurity (or reclaiming useful matter) wherein, obtain peace and quiet liquid (clear liquid).Employed medicament in the chemical settling (coagulating agent and flocculation agent) can be divided into three major types by its molecular structure: inorganic coagulant (comprising low molecule and polymerization macromolecule), synthetic organic polymer flocculation agent and natural macromolecule flocculating agent.Coagulating agent and flocculation agent commonly used in the industry at present have: 1, low-molecular inorganic coagulating agent (as alum, Tai-Ace S 150, chloro sulphuric acid aluminium, ferric sulfate, ferrous sulfate, iron(ic) chloride, iron trichloride etc.); 2, inorganic polymer coagulant (as polymerize aluminum chloride, polyaluminium sulfate, poly aluminium chloride iron, poly-silicon aluminum chloride, polymeric aluminum sulfate silicate, poly-silicon aluminium chloride ferrum, ferric sulfate of polymerized silica, polymeric aluminum sulfate silicate iron etc.); 3, synthetic organic polymer flocculation agent (as polyacrylamide, polyacrylic acid and potassium, sodium salt etc.); 4, complex coagulation flocculation agent (inorganic polymer+organic polymer; As various inorganic polymer coagulant+polyamine, inorganic polymer+polyacrylamide, inorganic polymer+modified starch, inorganic polymer+polydiene propyl-dimethyl ammonia chloride etc.); 5, natural macromolecule flocculating agent (as modified starch, chitosan, modified lignin resin, derivatived cellulose, vegetable jelly and modified flocculant thereof, polysaccharide and modified flocculant thereof, protein and derivative and microbial flocculant etc.); 6, coagulant aids (as lime, ozone, hydrogen peroxide, potassium permanganate, acrylamide---diallyl dimethyl chlorination amine copolymer thing); 7, coagulation-flocculation sorbent material (as diatomite and modifier thereof, attapulgite, atlapulgite, wilkinite, gac etc.).These flocculation agents are used in that to concentrate in the raw phosphoric acid sedimentation performance sedimentation incomplete, and end liquid excessive height can not obtain clarifying phosphoric acid, and fouling is serious.
Summary of the invention
The present invention is directed to above-mentioned flocculation agent and be used in that to concentrate in the raw phosphoric acid sedimentation performance sedimentation incomplete, end liquid excessive height, can not obtain the problem of clarifying phosphoric acid, and the subsequent handling fouling is serious, and a kind of multi-functional sinking agent that is used for Wet-process Phosphoric Acid Production is provided, this multi-functional sinking agent is to 18wt%-53wt%P
2O
5Raw phosphoric acid is handled, and defluorinate, scale inhibition and sedimentation combined carries out.The invention provides a kind of multi-functional sinking agent used when being used for Wet-process Phosphoric Acid Production and removing impurity in the raw phosphoric acid, it is complete that the multi-functional sinking agent of the present invention has effect of settling, end liquid height is not high, the preparation method is simple, cost is low, and next procedure is had scale inhibition usefulness, luminance brightness, the crystallization feel of production diammonium phosphate granulation is improved.
A kind of multi-functional sinking agent that is used for Wet-process Phosphoric Acid Production, by flocculant in non-ion type, coagulation-flocculation sorbent material, anion surfactant by mass ratio: 10～20: 60～80: 10～20 mix, and product is multi-functional sinking agent.
Described flocculant in non-ion type is poly-cellulose ethers or polyacrylamide.
Described coagulation-flocculation sorbent material is diatomite or attapulgite.
Described anion surfactant is sodium alkyl benzene sulfonate or alkyl sodium sulfonate.
The present invention has following advantage: multi-functional sinking agent preparation method is simple to operate, cost is lower, the multi-functional sinking agent that makes has good effect of settling and scale inhibition effect in Wet-process Phosphoric Acid Production, has good application prospects, and next procedure is had scale inhibition usefulness, particularly can improve luminance brightness, the crystallization feel of production diammonium phosphate granulation.
In order to confirm sinking agent performance of the present invention, with the Hubei Wet-process Phosphoric Acid Production is example, after using 0.1～0.5 kilogram/ton of multi-functional sinking agent of the present invention, get the clarification phosphoric acid of liquid≤15% on earth, solid content＜the 0.4wt% of phosphoric acid clear liquid, fluorine decreasing ratio 〉=88%, the subsequent handling scale inhibition performance greatly improves.
Embodiment
The invention will be further described in conjunction with the embodiments.
Embodiment 1
Mixed at 20: 60: 20 by mass ratio by the poly-ether of cellulose of methyl, diatomite and Sodium dodecylbenzene sulfonate, product is multi-functional sinking agent of the present invention.With the Hubei Wet-process Phosphoric Acid Production is example, use 0.3 kilogram/ton of the multi-functional sinking agent make after, the clarification phosphoric acid of liquid 14% on earth, the solid content＜0.4wt% of phosphoric acid clear liquid, fluorine decreasing ratio 88%, the subsequent handling scale inhibition performance greatly improves.
Embodiment 2
Mixed at 20: 70: 10 by mass ratio by the poly-ether of cellulose of ethyl, diatomite and Witco 1298 Soft Acid, product is sinking agent of the present invention.Product is multi-functional sinking agent of the present invention.With the Hubei Wet-process Phosphoric Acid Production is example, use 0.2 kilogram/ton of the multi-functional sinking agent make after, the clarification phosphoric acid of liquid 15% on earth, the solid content＜0.4wt% of phosphoric acid clear liquid, fluorine decreasing ratio 89%, the subsequent handling scale inhibition performance greatly improves.
Embodiment 3
Mixed at 10: 80: 10 by mass ratio by non-ionic polyacrylamide, attapulgite and sodium laurylsulfonate, product is sinking agent of the present invention.Product is multi-functional sinking agent of the present invention.With the Hubei Wet-process Phosphoric Acid Production is example, use 0,4 kilogram/ton of the multi-functional sinking agent make after, the clarification phosphoric acid of liquid 13% on earth, the solid content＜0.4wt% of phosphoric acid clear liquid, fluorine decreasing ratio 90%, the subsequent handling scale inhibition performance greatly improves.
Claims (4)
1. multi-functional sinking agent that is used for Wet-process Phosphoric Acid Production, it is characterized in that: by flocculant in non-ion type, coagulation-flocculation sorbent material, anion surfactant by mass ratio: 10～20: 60～80: 10～20 mix, and product is multi-functional sinking agent.
2. according to the described multi-functional sinking agent that is used for Wet-process Phosphoric Acid Production of claim 1, it is characterized in that: described flocculant in non-ion type is poly-cellulose ethers or polyacrylamide.
3. according to the described multi-functional sinking agent that is used for Wet-process Phosphoric Acid Production of claim 1, it is characterized in that: described coagulation-flocculation sorbent material is diatomite or attapulgite.
4. according to the described multi-functional sinking agent that is used for Wet-process Phosphoric Acid Production of claim 1, it is characterized in that: described anion surfactant is sodium alkyl benzene sulfonate or alkyl sodium sulfonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110112966 CN102219198A (en) | 2011-05-03 | 2011-05-03 | Multifunctional sinking agent used in production of phosphoric acid by wet method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110112966 CN102219198A (en) | 2011-05-03 | 2011-05-03 | Multifunctional sinking agent used in production of phosphoric acid by wet method |
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| CN102219198A true CN102219198A (en) | 2011-10-19 |
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| CN 201110112966 Pending CN102219198A (en) | 2011-05-03 | 2011-05-03 | Multifunctional sinking agent used in production of phosphoric acid by wet method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649657A (en) * | 2012-05-18 | 2012-08-29 | 成都市新都化工股份有限公司 | Production method for macroelement fully water-soluble fertilizer |
| CN103240183A (en) * | 2013-05-23 | 2013-08-14 | 云南三明鑫疆矿业有限公司 | Settlement and dehydration technology for direct flotation concentrate and tailings of collophanite |
| CN103332666A (en) * | 2013-07-10 | 2013-10-02 | 湖北兴发化工集团股份有限公司 | Settling agent in wet-method phosphoric acid concentration processing process |
| CN103787570A (en) * | 2014-02-27 | 2014-05-14 | 华东理工大学 | Environment-friendly sludge dewatering conditioner and application thereof |
| CN105523620A (en) * | 2016-02-01 | 2016-04-27 | 仲恺农业工程学院 | Polysilicon ferric sulfate based inorganic-organic compound flocculant and preparation method thereof |
| CN105948212A (en) * | 2016-06-16 | 2016-09-21 | 上海华友金裕微电子有限公司 | Organic acid sinking agent preparing method |
| CN114906829A (en) * | 2022-04-28 | 2022-08-16 | 湖北云翔聚能新能源科技有限公司 | Method for preparing battery-grade iron phosphate by adopting agricultural-grade wet-process phosphoric acid |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730406A (en) * | 2005-08-31 | 2006-02-08 | 刘天暘 | Method for removing impurities in phosphoric acid and deposition purificant used in the method |
| CN1751988A (en) * | 2005-11-04 | 2006-03-29 | 华中师范大学 | Method of fast eliminating solid matter and fluorine in wet method crude phoshporic acid |
-
2011
- 2011-05-03 CN CN 201110112966 patent/CN102219198A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730406A (en) * | 2005-08-31 | 2006-02-08 | 刘天暘 | Method for removing impurities in phosphoric acid and deposition purificant used in the method |
| CN1751988A (en) * | 2005-11-04 | 2006-03-29 | 华中师范大学 | Method of fast eliminating solid matter and fluorine in wet method crude phoshporic acid |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649657A (en) * | 2012-05-18 | 2012-08-29 | 成都市新都化工股份有限公司 | Production method for macroelement fully water-soluble fertilizer |
| CN103240183A (en) * | 2013-05-23 | 2013-08-14 | 云南三明鑫疆矿业有限公司 | Settlement and dehydration technology for direct flotation concentrate and tailings of collophanite |
| CN103240183B (en) * | 2013-05-23 | 2016-08-03 | 云南三明鑫疆磷业股份有限公司 | The sedimentation of a kind of direct flotation concentrate and tailings of collophanite, dewatering process |
| CN103332666A (en) * | 2013-07-10 | 2013-10-02 | 湖北兴发化工集团股份有限公司 | Settling agent in wet-method phosphoric acid concentration processing process |
| CN103332666B (en) * | 2013-07-10 | 2015-11-18 | 湖北兴发化工集团股份有限公司 | Sinking agent in a kind of wet-process phosphoric acid concentration treating processes |
| CN103787570A (en) * | 2014-02-27 | 2014-05-14 | 华东理工大学 | Environment-friendly sludge dewatering conditioner and application thereof |
| CN103787570B (en) * | 2014-02-27 | 2015-07-22 | 华东理工大学 | Environment-friendly sludge dewatering conditioner and application thereof |
| CN105523620A (en) * | 2016-02-01 | 2016-04-27 | 仲恺农业工程学院 | Polysilicon ferric sulfate based inorganic-organic compound flocculant and preparation method thereof |
| CN105948212A (en) * | 2016-06-16 | 2016-09-21 | 上海华友金裕微电子有限公司 | Organic acid sinking agent preparing method |
| CN114906829A (en) * | 2022-04-28 | 2022-08-16 | 湖北云翔聚能新能源科技有限公司 | Method for preparing battery-grade iron phosphate by adopting agricultural-grade wet-process phosphoric acid |
| CN114906829B (en) * | 2022-04-28 | 2024-01-02 | 湖北云翔聚能新能源科技有限公司 | Method for preparing battery-grade ferric phosphate by adopting agricultural-grade wet-process phosphoric acid |
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Application publication date: 20111019 |