A kind of extracting high-purity alfeo from fly ash 3 powder method

Abstract

The invention discloses a method for extracting high-purity AlFeO3 powder from coal ash. The method comprises the following steps that 1, solid salicylic acid is added into a coal ash-water system, after stirring and ultrasonic reaction, standing is conducted, an amaranthine complex which suspends on the upper layer is separated out, and after the amaranthine complex is subjected to multiple washing and drying treatment, dry ferro-aluminum salisylate complex powder is obtained; 2, a dry pot containing the ferro-aluminum salisylate complex powder in the step 1 is placed in a muffle furnace, andafter calcination is conducted in the air, the AlFeO3 powder can be obtained. Compared with the prior art, the method for extracting the high-purity AlFeO3 powder from the coal ash has the beneficialeffects that controllable regeneration of the coal ash is achieved, and a new path is provided for preparation and application of the high-purity AlFeO3 powder; the method has the characters that operation is simple, the cost is low, the product quantity is large, the visible light absorption performance is excellent, and the like.

Description

technical field [0001] The invention relates to the field of "three wastes" treatment and regeneration, in particular to a method for extracting high-purity AlFeO from fly ash 3 powder method. Background technique [0002] my country is a big coal-producing and coal-burning country, and the fly ash discharged after coal is incinerated belongs to the solid waste in the "three wastes", and its form is powdery. Fly ash is mainly produced in coal-fired thermal power plants. With the passage of time and the rapid development of human civilization, modern civilization has become more and more inseparable from the support of electricity. Therefore, the total amount of fly ash emissions from coal-fired power plants that provide electricity has increased sharply. Reasonable recycling will pollute our nature and harm human beings. The fly ash discharged into the river will cause river silting, and the toxic chemicals entering the water will cause irreparable losses to all living thi...

AI Technical Summary

Problems solved by technology

With the passage of time and the rapid development of human civilization, modern civilization has become more and more inseparable from the support of electricity. Therefore, the total amount of fly ash emissions from coal-fired power plants that provide electricity has increased sharply. Reasonable recycling will pollute our nature and harm human beings. The fly ash discharged into the river will cause river silting, and the toxic chemicals entering the water will cause irreparable losses to all living things.

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