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Modifier special for ardealite and preparation method

A modifier, phosphogypsum technology, applied in the field of chemistry, can solve the problems of human death or disease, environmental pollution of phosphogypsum, weather, water system and soil pollution, etc., to solve environmental pollution, reduce pollution and reduce production costs. Effect

Inactive Publication Date: 2011-04-27
云南富强高新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because phosphogypsum contains a large amount of impurities such as fluoride, free phosphoric acid, P205\phosphate, etc., phosphogypsum will pollute the environment during storage.
[0003] A large amount of phosphogypsum industrial solid waste is piled up in the environment. Due to wind erosion and rain erosion, the weather, water system and soil are polluted. Long-term exposure to phosphogypsum may also lead to human death or disease.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A special modifier for phosphogypsum provided in this embodiment mainly uses calcium tricalcium (CaoH (CaCO3)), sodium sulfate (NaSO4) and a small amount of silica fume powder as raw materials.

[0015] During manufacture, the following configuration processes can be used:

[0016] Crush and grind each raw material separately, then measure the ingredients, stir and mix the ingredients evenly, then pack and inspect.

[0017] When in use, mix this special modifier for phosphogypsum into phosphogypsum, and the calcium tricalcium (CaoH(CaCO 3 )), NaSO 4 It can chemically react with fluoride, free phosphoric acid, P205\phosphate and other acidic substances in phosphogypsum to reduce the acidic components. The use of this modifier can effectively reduce the environmental pollution of phosphogypsum with reduced production costs.

[0018] Since the modified phosphogypsum has greatly reduced environmental pollution, the phosphogypsum can be reused to produce building materials...

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PUM

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Abstract

The invention relates to the chemistry field and discloses a modifier special for ardealite and a preparation method. The modifier comprises (CaOH(CaCO3)), NaSO4 and silica fume. The modifier can reduce the environmental pollution of ardealite.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to a special modifier for phosphogypsum. Background technique [0002] Phosphogypsum is a widespread industrial solid waste. Since phosphogypsum contains a large amount of impurities such as fluoride, free phosphoric acid, and P205\phosphate, phosphogypsum will pollute the environment during storage. [0003] A large amount of phosphogypsum industrial solid waste is piled up in the environment. Due to wind erosion and rain erosion, the weather, water system and soil are polluted. Long-term exposure to phosphogypsum may also lead to human death or disease. Contents of the invention [0004] The first object of the present invention is to provide a special modifier for phosphogypsum, which can reduce the environmental pollution of phosphogypsum. [0005] The second object of the present invention is to provide a preparation process of a special modifier for phosphogypsum, the obtained mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D3/36A62D101/49A62D101/45
Inventor 张小坤
Owner 云南富强高新材料有限责任公司