SU1636374A1 - Raw mixture for manufacture of agloporite - Google Patents

Abstract

The invention relates to the production of building materials and can be used to make agloporite based on industrial wastes. In order to increase the strength of agloporite and reduce the return, the raw mix for the production of agloporite includes, in wt.%: Blast-4 granulated slag 50-70; lime 20-30; Koh- - Loh Nikov dust 10-20. The resulting agloporite is characterized by a density of 900-1100 kg / m3, strength of 96-200 MPa, water absorption of 14-20%, thermal conductivity of 0.118-0.130 kcal / m2. h-degrees The return amount is 1.5-2.8%. 1 tab. with $

Description

The invention relates to building materials and can be used to make agloporite based on industrial wastes.

The purpose of the invention is to increase the strength of agloporite and reduce returns.

The raw material mixture for the production of agloporite contains, in wt.%: Blast-furnace ground shpak 50-70; lime 20-30; top dust 10-20.

Granulated blast furnace slag with a basicity of about 1.0 is characterized by the chemical composition of the following oxide content,%: CaO 32-42.5; SiOa. 31-39.8; MPO 2.1-2.4; MgO 3.6-10.5; FeO 0.2-1.0} CaS 3.6-7.1, has so pl. 1270-1320 S.

Head dust is collected at the top of the blast furnace as a result of removal of the dust fraction and is formed from the abrasion of materials loaded into the furnace (sinter, concentrate, iron and manganese ore, coke, etc.).

The chemical composition of flue dust,%: CaO 4.5-7.3; SiOz 6.4-8.6; FeMer 40-48,5; MpO 0.46-1.5; MgO 2.4-2.9; CaS 3.2-4.1; S02 0.31-0.96; 2.4-2.9; FeO 12.5-14.0; PgO 0.21-0.74; ppt 2.0-7.5.

Example. The raw material mixture is prepared from the domain granulated slag, lime, and flue dust. The mixture is loaded on the sintering belt and calcined at 1248 ° C. After firing, the agloporite with a temperature of 960 ° C is cooled to 305 C at a rate of 6 ° C / min.

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Indicators of physico-technical properties of the resulting agloporite are presented in the table.

Agloporite is obtained from the raw mix, which is characterized by a density of 900-1100 kg / me, compression strength of 96–200 MPa, water absorption of 14–20%, thermal conductivity of 0.118– 0.130 kcal / m2 h. The amount of return is 1.5-2.8%.

The reinforcement mechanism of agloporite is as follows. Entering into the mixture of flue dust containing up to 40- 48% metallic iron leads to the formation of low-melting, but high-strength calcium ferrites and during sintering contributes to the hardening of the entire mixture after its formation and sintering. The other high-strength compounds ((FeO, MpO) CaO, etc., which are formed in this process, also contribute to the hardening of agloporite.

The resulting dense high-strength aggregate aggloporate in terms of physico-mechanical properties and

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Technical and economic efficiency is preferably used for the manufacture of high-strength building concrete in the capital construction of industrial buildings and structures.

Claims (1)

Invention Formula The raw material mixture for the production of agloporite, which includes a silica-containing component, a lime-containing component and dust production wastes, characterized in that, in order to increase the strength of agloporite 1 "decrease in recovery, it contains as a silica-1 component, granulated slag, the quality of the lime-containing component is lime, and the dust of industrial wastes - top dust with the following ratio of mixture components, wt.%: Domain granulated donkey 50-70 Lime 20-30 Koloshnikov dust 10-20