CN104556188A - Washing and purifying method of phosphogypsum - Google Patents
Washing and purifying method of phosphogypsum Download PDFInfo
- Publication number
- CN104556188A CN104556188A CN201310475824.XA CN201310475824A CN104556188A CN 104556188 A CN104556188 A CN 104556188A CN 201310475824 A CN201310475824 A CN 201310475824A CN 104556188 A CN104556188 A CN 104556188A
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- CN
- China
- Prior art keywords
- phosphogypsum
- washing
- purifying method
- impurities
- remove
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
- C01F11/468—Purification of calcium sulfates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention discloses a washing and purifying method of phosphogypsum. The washing and purifying method comprises the following steps: placing the phosphogypsum in water, washing the phosphogypsum with water to remove small soluble impurities therein; then sending the phosphogypsum into a stepped tank to be washed in stages, wherein the stepped tank is divided into 2-5 stages, so as to remove small insoluble impurities in the phosphogypsum; carrying out wet sieving and filtering to remove large-particle quartz and unreacted impurities in the phosphogypsum; at last using lime to neutralize, so as to remove residual acid in the phosphogypsum. Phosphorus, fluorine and certain inorganic impurities in the phosphogypsum can be effectively removed by setting the stepped tank to wash the phosphogypsum, then carrying out filtration and wet sieving, and at last performing lime neutralization to finish cleaning; the washing and purifying method can be used for achieving a good cleaning effect.
Description
Technical field
The invention belongs to gypsum technical field, be specifically related to a kind of washing and purifying method of phosphogypsum.
Background technology
Phosphogypsum is the byproduct of phosphoric acid production, is the gypsum renewable resource that phosphorous chemical industry enterprise of current China discharge scale amount is larger.Except containing except phosphorus, fluorine and some inorganic impurities in phosphogypsum, also containing the organic impurity harmful to product, these magazines can affect the color of materials for wall product, reduce product strength, produce radiation to human body, the finishing material that corrosion is mixed.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, a kind of washing and purifying method of phosphogypsum is provided, effective washing, purifying is carried out to phosphogypsum.
The washing and purifying method of phosphogypsum provided by the invention, comprises the following steps: phosphogypsum is put into water by (1), washes, and removes tiny soluble impurity wherein; (2) enter ladder pond and carry out classification washing, ladder pond is divided into 2-5 grades, removes insoluble impurities tiny in phosphogypsum; (3) wet screening filtration is carried out, oarse-grained quartz and unreacted impurity in removing phosphogypsum; (4) adopt lime to neutralize, remove acid residual in phosphogypsum.
The washing and purifying method of phosphogypsum provided by the invention, its beneficial effect is, arranges ladder pond, phosphogypsum is repeatedly washed, filters wet screening afterwards, eventually pass limestone vegetation and complete cleaning, effectively remove phosphorus, fluorine and some inorganic impurities in phosphogypsum, there is good cleaning performance.
Embodiment
Below in conjunction with an embodiment, the washing and purifying method of phosphogypsum provided by the invention is described in detail.
Embodiment
The washing and purifying method of the phosphogypsum of the present embodiment, comprises the following steps: phosphogypsum is put into water by (1), washes, and removes tiny soluble impurity wherein; (2) enter ladder pond and carry out classification washing, ladder pond is divided into 4 grades, removes insoluble impurities tiny in phosphogypsum; (3) wet screening filtration is carried out, oarse-grained quartz and unreacted impurity in removing phosphogypsum; (4) adopt lime to neutralize, remove acid residual in phosphogypsum.
Claims (1)
1. a washing and purifying method for phosphogypsum, is characterized in that: comprise the following steps: phosphogypsum is put into water by (1), washes, and removes tiny soluble impurity wherein; (2) enter ladder pond and carry out classification washing, ladder pond is divided into 2-5 grades, removes insoluble impurities tiny in phosphogypsum; (3) wet screening filtration is carried out, oarse-grained quartz and unreacted impurity in removing phosphogypsum; (4) adopt lime to neutralize, remove acid residual in phosphogypsum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475824.XA CN104556188A (en) | 2013-10-14 | 2013-10-14 | Washing and purifying method of phosphogypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475824.XA CN104556188A (en) | 2013-10-14 | 2013-10-14 | Washing and purifying method of phosphogypsum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104556188A true CN104556188A (en) | 2015-04-29 |
Family
ID=53073393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310475824.XA Pending CN104556188A (en) | 2013-10-14 | 2013-10-14 | Washing and purifying method of phosphogypsum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104556188A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000585A (en) * | 2015-06-12 | 2015-10-28 | 泰山石膏股份有限公司 | Ardealite neutralizing and purifying processing technology |
| CN105290012A (en) * | 2015-11-13 | 2016-02-03 | 山东先罗输送机械有限公司 | Gypsum cleaning device and technology |
| CN111892314A (en) * | 2020-08-17 | 2020-11-06 | 云南磷化集团有限公司 | Deep purification method of phosphogypsum |
| CN112573847A (en) * | 2021-01-20 | 2021-03-30 | 瓮福（集团）有限责任公司 | Method for removing organic matters in gypsum |
| CN112851175A (en) * | 2021-02-20 | 2021-05-28 | 四川省生态环境科学研究院 | Device and method for preparing cement retarder by adopting industrial waste residues |
-
2013
- 2013-10-14 CN CN201310475824.XA patent/CN104556188A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105000585A (en) * | 2015-06-12 | 2015-10-28 | 泰山石膏股份有限公司 | Ardealite neutralizing and purifying processing technology |
| CN105000585B (en) * | 2015-06-12 | 2016-11-09 | 泰山石膏股份有限公司 | In ardealite and purification process technique |
| CN105290012A (en) * | 2015-11-13 | 2016-02-03 | 山东先罗输送机械有限公司 | Gypsum cleaning device and technology |
| CN111892314A (en) * | 2020-08-17 | 2020-11-06 | 云南磷化集团有限公司 | Deep purification method of phosphogypsum |
| CN112573847A (en) * | 2021-01-20 | 2021-03-30 | 瓮福（集团）有限责任公司 | Method for removing organic matters in gypsum |
| CN112851175A (en) * | 2021-02-20 | 2021-05-28 | 四川省生态环境科学研究院 | Device and method for preparing cement retarder by adopting industrial waste residues |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
|
| WD01 | Invention patent application deemed withdrawn after publication |