Method for preparing microcrystalline glass by using ceramic polishing brick sludge

Abstract

The invention discloses a method for preparing microcrystalline glass by using ceramic polishing brick sludge. The microcrystalline glass comprises the following components in percentage by weight: 55 to 70 percent of ceramic polishing brick sludge, 5 to 15 percent of quartz, 10 to 20 percent of calcium oxide, 3 to 10 percent of sodium carbonate, 1 to 10 percent of barium carbonate and 1 to 10 percent of zinc oxide. The preparation method comprises the following steps of: uniformly mixing the components, putting the mixture in a kiln furnace, heating the kiln furnace to 1,400+/-50 DEG C, keeping the temperature for 1 to 3 hours, directly pouring the completely melted glass solution in water for water quenching to obtain glass particles, drying and screening the glass particles to obtain the glass particles, of which the particle size is 0.5 to 5 millimeters, drying the glass particles, spreading the dried glass particles over a mould, putting the mould in the kiln furnace for thermal treatment by a two-step method, and finally preparing the microcrystalline glass. In the method, by using the ceramic polishing brick sludge as a main raw material for preparing the CAS microcrystalline glass, the microcrystalline glass meeting the industry standards can be prepared, so that the wastes are recycled, the environment is protected and the cost advantage is achieved.

Description

technical field [0001] The invention relates to the preparation of glass-ceramics in the silicate industry, in particular to a method for preparing glass-ceramics by utilizing ceramic polishing brick sludge. The glass-ceramic is CAS (CaO-Al 2 o 3 -SiO 2 ) glass-ceramics. Background technique [0002] Glass-ceramics is a material with uniform distribution of microcrystals and glass phases made of basic glass through controlled crystallization behavior. It combines the excellent properties of glass and ceramics and can be used as a new type of building decoration material, electronic material, etc. The prospects are broad. Judging from the current research at home and abroad, it has been many years since the use of tailings, slag, fly ash and other industrial wastes to prepare decorative glass-ceramics, and the technology has been very mature, but the use of polished brick sludge has not yet been used to prepare glass-ceramics. reports. [0003] The ceramic grinding and ...

AI Technical Summary

Problems solved by technology

The difficulty of reusing sludge from ceramic polished tiles is that obvious foaming will occur during the sintering process above 1150°C, which will deform the product and limit the recycling of sludge.