Thermal-insulation cotton prepared from iron making hot slag and waste incineration fly ash, and preparation method thereof

Abstract

The invention belongs to the technical field of thermal insulation cotton, and more specifically relates to a thermal-insulation cotton prepared from iron making hot slag and waste incineration fly ash, and a preparation method thereof. The thermal-insulation cotton comprises iron making hot slag, waste incineration fly ash, and an auxiliary material at a mass ratio of 1:0.1-0.3:0.01-0.02. The preparation method comprises following steps: 1, iron making hot slag is introduced into an electric melting tempering furnace, and waste incineration fly ash and the auxiliary material are added for high temperature melting mixing; 2, an obtained melt is subjected to centrifugation blowing, and swing hammer cotton spreading to obtain a cotton plate, and the cotton plate is subjected to curing and reforming so as to obtain the thermal-insulation cotton. According to the preparation method, the thermal-insulation cotton is prepared using the heat energy in iron making hot slag, so that iron making hot slag waste energy high efficiency utilization is realized; high temperature treatment is adopted to realize decomposition of dioxin in waste incineration fly ash, separation of a part of heavy metal chlorides and enrichment in secondary fly ash; silicate co-molten substances are formed by a small amount of heavy metal elements left in the melt and other substances, and stabilization is realized; and calcium, silicon, oxygen, and aluminium elements in waste incineration fly ash can be used in thermal insulation cotton preparation.

Description

technical field

[0001] The invention belongs to the technical field of thermal insulation cotton production, and in particular relates to thermal insulation cotton made from ironmaking hot slag and waste incineration fly ash and a preparation method thereof. Background technique

[0002] Ironmaking hot slag refers to the hot slag produced in the blast furnace ironmaking or ferroalloy process, which is mainly oxides of silicon, calcium, aluminum, magnesium, manganese and nickel, accounting for more than 85% of the total content. It also contains a small amount of iron, carbon, phosphorus and sulfur. The output of ironmaking hot slag in my country is relatively large, but at present most of its treatment adopts the water quenching method, which not only cannot use the sensible heat of hot slag, but also causes a lot of waste of water resources. In addition, the slag is also harmful to the atmosphere, water and soil Serious pollution has been caused and the working environment ...

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