Process for abstracting floating air ball from fly ash or slag

Abstract

The invention relates to a method for comprehensively utilizing fly ash and furnace cinder, in particularly to a method for extracting floating beads from the fly ash or the furnace cinder. The method comprises the following: a working procedure of screening refined iron sand from the fly ash or the furnace cinder; a working procedure of flotating floating beads; a working procedure of pre-desiliconization; a technological flow of producing white carbon black; a technological flow of producing aluminum oxide; and a technological flow of producing cement by utilization of waste residue. The method arranges a flotating device before pre-desiliconization technological reaction to extract the floating beads from the reacted mixture, and can obtain white floating bead products after decarbonization and secondary selection. Simultaneously, the white carbon black, the aluminum oxide and the joint cement can be organically, continuously and sequentially extracted from the fly ash or the furnace cinder after the floating beads are extracted, thereby the method realizes comprehensive utilization of the fly ash or the furnace cinder.

Description

【Technical field】 [0001] The invention relates to a resource utilization method of fly ash or slag, in particular to a method for extracting floating beads from fly ash or slag. 【Background technique】 [0002] The massive accumulation of fly ash emitted by thermal power plants has caused serious pollution to the surrounding environment. Flying beads are a component of fly ash, accounting for about 5-10% of the total amount of fly ash. They have various characteristics such as light weight, heat preservation, and corrosion resistance. One of the important ways to use. This kind of floating beads has important applications in building materials, temperature control materials, and chemical industries, such as it can be used as a polymer filler. [0003] In recent years, most of the research results of extracting useful resources from fly ash or slag at home and abroad are only of theoretical significance. The main reason for limiting the industrialization of these research re...

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Problems solved by technology

[0003]In recent years, most of the research results of extracting useful resources from fly ash or slag at home and abroad are only of theoretical significance. The main reason for limiting the industrialization of these research results is Research on the extraction of useful resources from fly ash or slag is not systematic, for example, some study the extraction of alumina alone, some specialize in the extraction of silicon oxide, some specialize in the extraction of ferric oxide, some specialize in the extraction of carbon, and others specialize in the extraction of trace elements , these studies are all self-contained, and the extraction of resources has not been interrelated and integrated to make it a feasible overall plan, so that the extraction cost remains high and it is difficult to promote industrialization

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