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Method for preparing efficient environmental-friendly universal magnesium silicate coating mist polycoagulant

A paint mist coagulant, magnesium lithium silicate technology, which is applied in the direction of flocculation/precipitated water/sewage treatment, waste paint treatment, etc. Excellent paint mist removal effect, simple use method and good treatment effect

Active Publication Date: 2017-08-04
JIANGSU HEMINGS NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the free formaldehyde content of the melamine resin paint mist coagulant is high, which is harmful to the human body, and its application is greatly restricted.
However, the paint mist removal effect of clay-based paint mist coagulants is not ideal, and a large amount of sludge will be generated, and the removal efficiency of later salvage is low

Method used

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  • Method for preparing efficient environmental-friendly universal magnesium silicate coating mist polycoagulant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Mix 100 parts of lithium magnesium silicate and 5 parts of hexadecyltrimethylammonium bromide with water to make a hectorite aqueous dispersion with a solid content of 15%, then add 5 parts of iron nitrate, stir and mix After uniformity, add sodium carbonate solution dropwise until the pH of the aqueous solution is ≥ 12;

[0028] 2) Then add 0.5 part of sodium carboxymethyl cellulose to the above solution, stir and mix evenly, then add 0.1 part of cationic polyacrylamide, and then make a high-efficiency general-purpose lithium magnesium silicate paint mist coagulant 1# .

Embodiment 2

[0030] 1) Mix 100 parts of lithium magnesium silicate, 3 parts of cetyltrimethylammonium bromide, and 3 parts of cetyltrimethylammonium chloride, and mix them with water to make laponite with a solid content of 20%. Water dispersion, add 4 parts of ferric nitrate and 2 parts of ferric sulfate, stir and mix evenly, add sodium carbonate solution dropwise until the pH of the aqueous solution is ≥ 12;

[0031] 2) Then add 0.5 parts of sodium carboxymethyl cellulose and 0.5 parts of sodium alginate to the above solution, stir and mix evenly, then add 0.2 parts of cationic polyacrylamide, and then make a high-efficiency general-purpose lithium magnesium silicate after fully stirring Paint mist coagulant 2#.

Embodiment 3

[0033] 1) Mix 100 parts of lithium magnesium silicate, 3 parts of cetyltrimethylammonium bromide, 3 parts of cetyltrimethylammonium chloride and 2 parts of dodecyltrimethylammonium bromide And use water to make a hectorite aqueous dispersion with a solid content of 25%, then add 4 parts of ferric nitrate, 2 parts of ferric sulfate and 2 parts of ferric chloride, stir and mix well, then add sodium carbonate solution dropwise until the pH of the aqueous solution≥ 12;

[0034] 2) Then add 1 part of sodium carboxymethyl cellulose, 1 part of sodium alginate and 1 part of sodium polyacrylate to the above solution, stir and mix evenly, then add 0.3 part of cationic polyacrylamide, and then obtain high-efficiency General-purpose lithium magnesium silicate paint mist coagulant 3#.

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Abstract

The invention discloses a method for preparing efficient environmental-friendly universal magnesium silicate coating mist polycoagulant. The method comprises the following process steps: 1) mixing magnesium silicate lithium and organic quaternary ammonium salt, blending with water so as to obtain a hectorite water dispersing liquid of which the solid content is 15-30%, further adding water-soluble ferric salt, uniformly stirring and mixing, dropping a sodium carbonate solution till the pH value of the water solution is greater than or equal to 12; and 2) adding water-soluble anion resin into the solution obtained in the step I, uniformly stirring and mixing, further adding cationic polyacrylamide, and sufficiently stirring, thereby obtaining the efficient universal magnesium silicate coating mist polycoagulant. The invention aims to overcome the defects of the prior art, and provides a preparation method for magnesium silicate coating mist polycoagulant which is environmental-friendly, low in cost and high in coating mist removal efficiency.

Description

technical field [0001] The invention relates to the technical field of preparation of a paint mist coagulant, in particular to a preparation method of a high-efficiency, environment-friendly and general-purpose lithium magnesium silicate paint mist coagulant. Background technique [0002] With the development of modern automobile painting technology, the amount of paint spraying is increasing day by day. Usually, many of them cannot be applied to the workpiece and become overspray paint (overspray paint). The amount of overspray accounts for 25% to 60% of the total amount of paint. Overspray paint will adhere to the pipelines, walls and even the circulation pump of the spray booth circulation system, and cause the circulation water system of the spray booth to be polluted and microbial growth, which greatly affects the normal production. At the same time, overspray paint contains a large amount of volatile organic solvents that are not conducive to human health, seriously po...

Claims

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Application Information

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IPC IPC(8): C02F1/56C02F103/14
CPCC02F1/56C02F2103/14
Inventor 张天志张天毅
Owner JIANGSU HEMINGS NEW MATERIALS TECH CO LTD
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