Once-fired glass-ceramic composite brick and its production method

Abstract

The invention relates to a single-fired glass ceramic composite brick and a production method. A blank of the ceramic brick is prepared from, by weight, 10-15 parts of clay, 0-5 parts of mineralizing agents, 0-10 parts of lithium china stones, 74-85 parts of tile-polished waste, 0-1.2 parts of peptizers and 0-0.5 part of reinforcing agents. The production method comprises the steps that the blank is processed through procedures of wet ball milling and spray drying and then processed through dry pressing to prepare a ceramic green blank; 2, the ceramic green blank is coated with a ground glaze after being dried and decorated through printing to form an overglazed color blank, and then microcrystalline glass frit dry grains are coated on the overglazed color blank to form a dry grain layer; 3, methylcellulose is sprayed and fixed on the surface of the dry grain layer, then the blank is put into a roller kiln to be fired, the firing temperature is set at 1000 DEG C-1048 DEG C, the firing time is set for 65-150 minutes, and a semi-finished product is prepared; 4, the semi-finished product out of the kiln is prepared into a finished produce after being processed through strickling for thickness fixation, rough polishing, fine polishing, edging, chamfering, air drying, inspecting and sorting, color separating and grading.

Description

technical field [0001] The invention relates to the technical field of ceramic brick production, in particular to a once-fired glass-ceramic composite brick and a production method thereof. Background technique [0002] At present, most of the transparent glass and overglaze ceramic composite board products on the market adopt the production process of secondary firing: that is, the first high-temperature firing is carried out in the roller kiln. Prepare the overglaze color ceramic green body that has been screen printed or rubber roller printed, and then spread the dry granules of the low-temperature transparent frit for the second firing, and then enter the roller kiln for the second firing. The general firing temperature is 1050 ~ 1100 ℃, the main purpose is to make the overglaze color ceramic body and the transparent frit compound together, and the semi-finished product is then polished to obtain a finished transparent glass and overglaze color ceramic composite plate. ...

AI Technical Summary

Problems solved by technology

[0007] ⑵In the current one-time firing traditional process, in order to ensure the strength of the green body, the clay content in the green body formula generally exceeds 20%, while most of the other ingredients in the formula are natural porcelain sand raw materials, and the overall loss on ignition of the green body is relatively large. Generally more than 4%, and because the base glaze is completed synchronously at a high temperature, the technical level and production process management requirements of the transparent microcrystalline dry particles are very strict, and the overall production rate is greatly increased compared with the second firing. At present, the acid and alkali resistance index of most final products is generally difficult to achieve

[0008] (3) In the second firing, it is relatively difficult to control the shape of the primary bisque fired brick, so it is technically difficult to realize the thinning of the glass-ceramic layer; and once the thickness of the primary firing is reduced, the related shrinkage glaze pinhole defects will increase, and the antifouling The capacity is greatly reduced, and the production control is too difficult

Images