High-performance modified red mud for preparing coatings and its application
A high-performance, red mud technology, applied in powder coatings, polyester coatings, coatings, etc., can solve the problem of high production costs
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[0031] The preparation method of the high-performance modified red mud comprises the following steps:
[0032] (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%;
[0033] (2) ultrafine grinding the clean red mud prepared in step (1), and sieving to obtain a clean red mud powder larger than 300 meshes;
[0034] (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 monoeth...
Embodiment 1
[0062] A method for preparing high-performance modified red mud, comprising the following steps:
[0063] (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%;
[0064] (2) ultrafine grinding the clean red mud prepared in step (1), and sieving to obtain a clean red mud powder larger than 300 meshes;
[0065] (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 sul...
Embodiment 2
[0079] A method for preparing high-performance modified red mud, comprising the following steps:
[0080](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%;
[0081] (2) ultrafine grinding the clean red mud prepared in step (1), and sieving to obtain a clean red mud powder larger than 300 meshes;
[0082] (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 m...
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Abstract
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