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Coal washing water treatment agent

A technology for water treatment agent and coal washing, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of affecting the output of press-filtered mud cake, limited application scope, and unfavorable separation of mud and water.

Inactive Publication Date: 2011-06-29
鞍钢附企给排水净水剂厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not conducive to the separation of mud and water in the filter press process, and directly affects the output of filter press dry mud cake
It is the characteristics of this efficient flocculant that limit its application range in coal washing water treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The coal washing water treatment agent is a mixture of anionic polyacrylamide with a mesh number of 30-100 mesh and magnesium chloride, calcium chloride, and sodium sulfate with a particle size of 0.5-1.0 mm. The ratio of each component in the coal washing water treatment agent is polypropylene Amide: magnesium chloride: calcium chloride: sodium sulfate = 1:5:2:1.

Embodiment 2

[0013] The coal washing water treatment agent is a mixture of non-ionic polyacrylamide with a mesh number of 50-90 mesh and magnesium chloride, calcium chloride, and sodium sulfate with a particle size of 0.4-1.6 mm. The ratio of each component in the coal washing water treatment agent is poly Acrylamide: magnesium chloride: calcium chloride: sodium sulfate=2:11:6:3.

Embodiment 3

[0015] The coal washing water treatment agent is a mixture of zwitterionic polyacrylamide with a mesh number of 40-60 mesh and magnesium chloride, calcium chloride, and sodium sulfate with a particle size of 0.2-1.0 mm. The ratio of each component in the coal washing water treatment agent is poly Acrylamide: magnesium chloride: calcium chloride: sodium sulfate=3.4:8:9:2.

[0016] The coal washing water treatment agents prepared in the above Examples 1-3 were used for the treatment of coal washing water, and it was found that the dirty coal washing water became obviously clear, forming upper clear water and lower layer precipitation, which had a very good coal washing water treatment effect.

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PUM

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Abstract

The invention provides a coal washing water treatment agent. The coal washing water treatment agent comprises the following main components in part by mass: 1 to 5 parts of polyacrylamide, 5 to 15 parts of magnesium chloride, 1 to 10 parts of calcium chloride and 1 to 5 parts of sodium sulfate. The coal washing water treatment agent can be efficiently used for treating coal washing water.

Description

technical field [0001] The invention relates to a water treatment agent, in particular to a coal washing water treatment agent. Background technique [0002] Coal washing water after coal preparation in coal mines is a kind of sewage containing suspended solids such as ultra-fine coal powder and mineral powder particles. In order to meet the national water use and environmental protection requirements, coal preparation water must be treated and reused as reclaimed water. Coal preparation water is characterized by complex components and is not easy to settle. It takes a long time of static precipitation to achieve the effect of coal water separation, which makes the coal washing efficiency extremely low and the cost investment huge during the production process. [0003] In order to achieve the effect of coal-water separation, the general method is to use polyacrylamide for flocculation and precipitation. Polyacrylamide is a highly efficient flocculant. On the one hand, it u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F1/52
Inventor 赵俊岩韩培林王楠赵吉庆
Owner 鞍钢附企给排水净水剂厂
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