Modified red mud for coating and preparation method of modified red mud

A red mud and modified technology, which is applied in powder coatings, fireproof coatings, polyester coatings, etc., can solve the problems of insufficient utilization of red mud, and achieve the effects of excellent apparent leveling, simple process operation, and low cost

Active Publication Date: 2019-08-02
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

[0011] The invention provides a modified red mud for coatings and a preparation method thereof to solve the technical problem of insufficient utilization of the existing red mud in indoor coatings

Method used

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  • Modified red mud for coating and preparation method of modified red mud
  • Modified red mud for coating and preparation method of modified red mud
  • Modified red mud for coating and preparation method of modified red mud

Examples

Experimental program
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Effect test

preparation example Construction

[0048] The preparation method of the modified red mud for the coating comprises the following steps:

[0049] (1) Wash the red mud with water, after the red mud is tested to have a pH value of 8.2-9.6, press filter to obtain clean red mud, and the clean red mud is dried until the water content is ≤ 5.2%;

[0050](2) ultrafine grinding the clean red mud prepared in step (1), and sieving to obtain a clean red mud powder larger than 300 meshes;

[0051] (3) Add modifier I to the clean red mud powder prepared in step (2), said modifier I is composed of diethanolamide stearic acid monoglyceride, ethylene-bis(N-ethanesulfonic acid - sodium lauramide), the addition of the modifier I is 3.4-4.6% of the clean red mud powder mass, the diethanolamide monoglyceride stearate, ethylene-bis(N-ethylene The mass ratio of sulfonic acid-dodecylamide) sodium is 6.3-10.8:3.4-7.6, the temperature is controlled at 56-65°C, and the mixture is stirred at a speed of 800-1000r / min for 20-30min to obtai...

Embodiment 1

[0086] A preparation method of modified red mud for coatings, comprising the following steps:

[0087] (1) The red mud discarded in the alumina production process is washed with water to remove the Na in the red mud 2 O and other water-soluble substances are washed away, and the washed red mud is tested to have a pH value of 8.9, then press-filtered to become clean red mud, and the clean red mud is dried to a water content of 5%;

[0088] (2) ultrafine grinding the clean red mud prepared in step (1), and sieving to obtain a clean red mud powder larger than 300 meshes;

[0089] (3) Add modifier I to the clean red mud powder prepared in step (2), said modifier I is composed of diethanolamide stearic acid monoglyceride, ethylene-bis(N-ethanesulfonic acid - lauramide) sodium composition, the addition of the modifier I is 4.2% of the clean red mud powder quality, the diethanolamide monoglyceride stearate, ethylene-bis(N-ethanesulfonic acid - the mass ratio of sodium dodecylamide)...

Embodiment 2

[0110] A preparation method of modified red mud for coatings, comprising the following steps:

[0111] (1) The red mud discarded in the alumina production process is washed with water to remove the Na in the red mud 2 O and other water-soluble substances are washed away, and the washed red mud is tested to have a pH value of 8.5, then press-filtered to become clean red mud, and the clean red mud is dried to a water content of 4.9%;

[0112] (2) ultrafine grinding the clean red mud prepared in step (1), and sieving to obtain a clean red mud powder larger than 300 meshes;

[0113] (3) Add modifier I to the clean red mud powder prepared in step (2), said modifier I is composed of diethanolamide stearic acid monoglyceride, ethylene-bis(N-ethanesulfonic acid - lauramide) sodium composition, the addition of the modifier I is 3.8% of the clean red mud powder quality, the diethanolamide monoglyceride stearate, ethylene-bis(N-ethanesulfonic acid - the mass ratio of sodium dodecylamid...

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Abstract

The invention discloses a preparation method of modified red mud for a coating. The preparation method comprises the following steps: firstly, washing the red mud, detecting a pH value of the washed red mud, carrying out filter pressing treatment to obtain clean red mud and drying the clean red mud; secondly, carrying out superfine grinding on the dried clean red mud and sieving to obtain clean red mud powder; thirdly, adding a modifier I into the clean red mud powder, controlling the temperature and the speed, and stirring to obtain a mixture I; fourthly, adding the mixer I and the modifier II into a stirrer, controlling the temperature and the speed, and stirring to obtain a mixer II; fifthly, drying the mixture II, then carrying out superfine grinding and sieving to obtain the modifiedred mud for the coating. According to the preparation method disclosed by the invention, the red mud is modified, then is filled into the coating for preparing indoor powder as filler and reaches thefilling volume as high as 48.3 percent or above; compared with filler such as conventional barium sulfate, the modified red mud has good filling performance and high filling volume, so that the production cost can be greatly reduced.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of red mud modification, and in particular relates to a modified red mud for paint and a preparation method thereof. [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 great difficulty in the comprehensive utilization o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C3/08C09C3/10C09C3/12C09D7/62C09D5/03C09D5/18C09D167/02C09D163/00
CPCC08L2201/02C09C1/407C09C3/006C09C3/08C09C3/10C09C3/12C09D5/03C09D5/18C09D7/62C09D163/00C09D167/02C08L63/00C08K9/04C08K9/08C08K3/36C08L67/02
Inventor 王雄
Owner 广西福宝信科技有限公司
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