A ceramic brick using desulfurization slag and glaze slag as raw materials and its production method

Abstract

The invention discloses a ceramic tile using desulfurization slag and glaze slag as raw materials. The raw materials in weight percent include: 1-5% of mixed waste slag, 95-99% of basic raw material; 75-99% of mixed waste slag in weight percent Composed of 90% waste glaze slag and 10‑25% desulfurization slag; waste glaze slag is waste glaze slag produced during the production of ceramic tiles, and desulfurization slag is waste slag produced by desulfurizing flue gas with lime water. The invention also discloses a production method of the ceramic brick. The invention introduces the waste glaze slag and the waste slag produced by flue gas desulfurization into the basic formula, so as to achieve the purpose of reusing the desulfurization slag and the waste glaze slag and ensuring that the properties of the products meet the standards. At the same time, waste glaze slag and desulfurization slag are recycled, which not only eliminates the production waste of desulfurization slag and waste glaze slag, but also reduces the production cost of ceramic tiles, and has no effect on the quality of finished ceramic tiles.

Description

technical field [0001] The invention relates to the technical field of ceramics, in particular to a ceramic brick using desulfurization slag and glaze slag as raw materials and a production method thereof. Background technique [0002] The flue gas of spray drying tower and kiln in ceramic tile production contains high SO 2 Direct emission of acidic gases such as SO will seriously pollute the air, and environmental protection agencies at all levels have 2 There are strict detection mechanisms and control standards for the emission of polluting gases, so desulfurization is an important part of the environmental protection treatment of building ceramics. Lime (CaO) is a simple and effective method of desulfurization, the production of calcium hydroxide (Ca(OH) 2 ), sprayed in the chimney in the form of water curtain, SO 2 Acid gas and water are fused to produce sulfurous acid (H 2 SO 3 ), sulfurous acid (H 2 SO 3 ) and lime water (Ca(OH) 2 ) undergoes a chemical reacti...

AI Technical Summary

Problems solved by technology

Although the waste glaze slag has the properties of glaze, it is mixed with other components, so it is difficult to be used in the production of high-quality antique brick products in the form of glaze

The firing temperature of waste glaze slag is low, there are many raw materials for low-temperature melting, high-temperature melting degree and low high-temperature viscosity. It is directly applied to the blank to increase the amount of liquid phase when the blank is fired, and it is difficult to control the brick shape and wave pattern of the kiln.

[0004] In the prior art, desulfurization slag and waste glaze slag are often treated as production waste, which is difficult to recycle

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