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Compound modifiers for red mud modification and application thereof in technology of surface treatment of red mud for paint filling

A composite modifier and red mud technology, applied in powder coatings, polyester coatings, coatings, etc., can solve the problems of high production costs, achieve the effects of improving adhesion, increasing oxygen index, and excellent comprehensive performance

Inactive Publication Date: 2019-08-30
广西福宝信科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention provides a compound modifier for mud modification and its surface treatment process of red mud used in paint filling, in order to solve the problems of how to overcome the problems existing in the use of traditional outdoor powder coatings, innovatively apply red mud in outdoor powder coatings, and solve the problem of High production costs, turning waste into treasure, protecting the environment, reducing the land occupation of waste slag, etc., so as to realize the industrialization and industrial application of red mud

Method used

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  • Compound modifiers for red mud modification and application thereof in technology of surface treatment of red mud for paint filling
  • Compound modifiers for red mud modification and application thereof in technology of surface treatment of red mud for paint filling
  • Compound modifiers for red mud modification and application thereof in technology of surface treatment of red mud for paint filling

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preparation example Construction

[0040] The preparation method of described modified red mud powder comprises the following steps:

[0041] (1) Pickling the red mud with sulfuric acid with a concentration of 12-18wt% to a pH value of 8.6-9.1, and then washing the red mud after pickling, and pressing the red mud after the pH value of the washed red mud is 7.8-8.2 Filter and process into clean red mud, and dry the clean red mud until the water content is ≤4.7%;

[0042] (2) ultrafine grinding the clean red mud prepared in step (1), and sieving to obtain a clean red mud powder larger than 300 meshes;

[0043] (3) Add composite modifier a to the clean red mud powder that step (2) makes, described composite modifier a is made of fatty acid methyl ester ethoxylate sodium sulfonate, coconut oil monoethanolamide sulfonate Disodium succinate monoester, the addition of the composite modifier a is 1.8-2.7% of the clean red mud powder mass, the fatty acid methyl ester ethoxylate sodium sulfonate, coconut oil monoethanol...

Embodiment 1

[0072] A preparation method of modified red mud powder, comprising the following steps:

[0073] (1) Pickling the red mud with sulfuric acid with a concentration of 13wt% to a pH value of 8.9, and then washing the red mud after pickling with water. After washing, the red mud is tested to have a pH value of 8.1 and then press-filtered to obtain clean red mud , the clean red mud is dried to a water content of 4.6%;

[0074] (2) ultrafine grinding the clean red mud prepared in step (1), and sieving to obtain a clean red mud powder larger than 300 meshes;

[0075] (3) Add composite modifier a to the clean red mud powder that step (2) makes, described composite modifier a is made of fatty acid methyl ester ethoxylate sodium sulfonate, coconut oil monoethanolamide sulfonate Disodium succinate monoester, the addition of the composite modifier a is 2.1% of the clean red mud powder mass, the fatty acid methyl ester ethoxylate sodium sulfonate, cocoic acid monoethanolamide sulfonate T...

Embodiment 2

[0089] A preparation method of modified red mud powder, comprising the following steps:

[0090] (1) Pickling the red mud with sulfuric acid with a concentration of 16wt% until the pH value is 8.7, and then washing the red mud after pickling with water. After the red mud is tested to have a pH value of 7.8, it is filtered to become clean red mud , the clean red mud is dried to a water content of 3.9%;

[0091] (2) ultrafine grinding the clean red mud prepared in step (1), and sieving to obtain a clean red mud powder larger than 300 meshes;

[0092] (3) Add composite modifier a to the clean red mud powder that step (2) makes, described composite modifier a is made of fatty acid methyl ester ethoxylate sodium sulfonate, coconut oil monoethanolamide sulfonate Disodium succinate monoester, the addition of the composite modifier a is 2.4% of the clean red mud powder mass, the fatty acid methyl ester ethoxylate sodium sulfonate, coconut oil monoethanolamide sulfonate The mass rati...

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Abstract

The invention discloses compound modifiers for red mud modification and application thereof in technology of surface treatment of the red mud for paint filling. The compound modifiers for red mud modification comprise a compound modifier a and a compound modifier b; the compound modifier a is prepared from fatty acid methyl ester ethoxylate sodium sulfonate and disodium cocamido monoethanolamide sulfosuccinate; the compound modifier b is prepared from [bis(3-aminopropyl)]polydimethylsiloxane and haxa[p-(carboxyl)phenoxy]cyclotriphosphazene. According to the compound modifiers for red mud modification and application thereof in the technology of surface treatment of the red mud for paint filling, fatty acid methyl ester ethoxylate sodium sulfonate and disodium cocamido monoethanolamide sulfosuccinate are adopted to carry out first-step modification on the red mud; then [bis(3-aminopropyl)]polydimethylsiloxane and haxa[p-(carboxyl)phenoxy]cyclotriphosphazene are adopted to carry out second-step modification on the red mud, the cohesiveness, compatibility and wettability between polyester resin and modified red mud powder can be effectively improved, so that the apparent property, gloss and oxygen index of paint films are increased significantly.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of powder paint preparation, and in particular relates to a composite modifier for mud modification and a process for surface treatment of red mud for paint filling. [0003] 【Background technique】 [0004] Guangxi Pingguo Aluminum is known as the aluminum capital of China and is the main aluminum production base in China. It mainly uses local bauxite resources to produce alumina, with an annual production of 2.5 million tons of alumina and 3 million tons of red mud discharge. Today, 37.5 million Ten thousand tons of red mud tailings have piled up into mountains, and now the discharge is gradually increasing at a rate of 3 million tons per year, which not only causes a lot of financial, material and manpower to be spent on closed treatment, but also takes up a lot of local land resources to pile up red mud. Dam construction safety management is also very difficult. [0005] At present, due to the gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/62C09D167/00C09D5/03
CPCC08K2003/2206C08K2003/2227C08K2003/2241C08K2003/2272C09D5/033C09D167/00C08K9/04C08K9/08C08K3/22C08K3/36
Inventor 王雄
Owner 广西福宝信科技有限公司