A black glass-ceramic brick with liquid converter steel slag as the main raw material and its preparation method

Abstract

The invention discloses a black microcrystalline glass brick with liquid converter steel slag as a main raw material. The black microcrystalline glass brick is characterized in that the raw materials of the brick are mainly consisting of 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 following chemical components by mass: 50 to 60% of SiO2, 1 to 5% of Al2O3, 15 to 25% of CaO, 1 to 5% of MgO, 5 to 8% of Fe2O3, 5 to 10% of Na2O, 3 to 9% of K2O, 0.1 to 1% of NiO, 0.1 to 1% of CoO, 0.5 to 1.5% of TiO2 and 4 to 10% of Na2SiF6. The invention also provides a preparation method for the black microcrystalline glass brick. The preparation method is capable of realizing large-scale utilization of the steel slag, can turn the waste into the valuable and reduce environmental pollution, and makes full use of heat energy carried by the steel slag, thereby saving a great amount of energy. The black microcrystalline glass brick has good wear resistance and rolling compaction resistance, is an ideal paving material for municipal roads and squares, and can be extensively applied to the industry of architectural ornament.

Description

technical field [0001] The invention relates to a black glass-ceramic brick 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] The converter steel slag produced in the steelmaking process is a large solid waste, which is much more difficult to deal with than the blast furnace slag. If a large amount of steel slag is not comprehensively processed and utilized, a large amount of land resources will be occupied, but it will also cause serious pollution to water, air, and soil, and even endanger people's health. Iron and steel enterprises have always regarded the converter steel slag produced in the steelmaking production process as solid waste in the past, and how to reduce the environmental pollution caused by steel slag is the main direction of their consideration. [0003] Today, iron and steel enterprises have also treated steel slag as a raw mate...

AI Technical Summary

Problems solved by technology

At present, the paving materials used are mainly natural stone and ordinary ceramic square bricks, and the increase and rolling of motor vehicles often cause the paving bricks to break, affecting the safety of pedestrians and the appearance of the city.