Preparation method for activated aluminum oxide by using aluminum industry surface treatment solid waste
A solid waste, activated alumina technology, applied in chemical instruments and methods, physical/chemical process catalysts, applications, etc., can solve problems affecting alumina preparation, complex impurity removal process, affecting catalytic activity, etc. Grinding, simple process, not easy to aggregate effect
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Embodiment 1
[0034] Embodiment 1 of the present invention utilizes the method for preparing activated alumina by surface treatment of solid waste in the aluminum industry, comprising the following steps:
[0035] (1) Wash the aluminum industry surface treatment solid waste with distilled water 5 times to remove sodium ions and other soluble impurities remaining in the aluminum solid waste;
[0036] (2) Add dilute hydrochloric acid solution to the aluminum material solid waste obtained in step (1), adjust the pH value to 3, and stand still for 1 min; then add triethanolamine solution, adjust the pH value to 11, and stand still for 1 min;
[0037] (3) Place the aluminum solid waste processed in step (2) in a 60°C oven for drying, then pulverize, add 2% lauryl ether phosphate by weight of the aluminum solid waste and stir evenly, and use a colloid mill to grind the aluminum Material solid waste particles were ground to 25 μm to obtain material A;
[0038] (4) Mix the material A obtained in s...
Embodiment 2
[0042] Embodiment 2 of the present invention utilizes the method for preparing activated alumina by surface treatment of solid waste in the aluminum industry to be similar to Embodiment 1, the difference being that the surfactant added in step (3) is a fatty amide nonionic surfactant, i.e. Diethanolamide Cocoate.
Embodiment 3
[0044] Example 3 of the present invention utilizes the method for preparing activated alumina by surface treatment of solid waste in the aluminum industry to be similar to Example 1, the difference being that the surfactant added in step (3) is a mixture of phosphoric acid ester and fatty acid surfactants , which is composed of lauryl ether phosphate and cocoic acid diethanolamide in a mass ratio of 1:1.
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