Opacified glass with liquid converter steel slag as main raw material and preparation method thereof

Abstract

The invention discloses opacified glass with liquid converter steel slag as a main raw material; the opacified glass mainly comprises the raw materials: the liquid converter steel slag and an auxiliary material; a glass melt obtained after mixed melting of the liquid converter steel slag and the auxiliary material comprises the chemical composition by the mass percentage: 35-45% of SiO2, 1-5% of Al2O3, 18-28% of CaO, 1-5% of MgO, 1-3% of Na2O, 2-4% of K2O, 7-16% of Fe2O3, 0.5-1% of ZrO2, 1-2% of P2O5, and 5-20% of Na2SiF6. The opacified glass has the density range of 2.90-3.40 g / cm<3>, three-point bending strength of 90-150 MPa and the Mohs hardness of 6-7 level, and can be widely applied to building decoration industries.

Description

technical field [0001] The invention relates to an opacified glass with liquid converter steel slag as the main raw material and a preparation method thereof, belonging to the field of building decoration materials. Background technique [0002] Converter steel slag is the waste slag brought by the steel tapping process in the steelmaking process. It is composed of iron oxide, magnesium oxide, silicon oxide, calcium oxide, aluminum oxide, etc. at a high temperature of 1500 ° C to 1600 ° C. . The chemical composition of steel slag from different domestic steel mills is also very different. Generally, calcium oxide accounts for 30% to 60%, iron oxide accounts for 15% to 26%, aluminum oxide accounts for 3% to 8%, and silicon oxide accounts for 8%. % to 23%, magnesium oxide accounts for 4% to 11%. The metallurgical industry of various countries in the world will discharge about 130 kg of steel slag, 40 kg of iron-containing powder slag and other waste materials for every ton o...

AI Technical Summary

Problems solved by technology

However, due to the large fluctuations in the composition of steel slag and the high requirements of related building materials on raw materials, its utilization is still not ideal

Moreover, in reality, the sensible heat of converter steel slag is a high-quality waste heat resource that has not been fully utilized in blast furnace iron enterprises.