Method of producing polishing brick by low-temperature sintering

Abstract

The invention discloses a production method for archaizing bricks by low-temperature sintering. The method comprises using cullet as a major raw material, sodium tripolyphosphate (Na3P5O10) as a secondary raw material, and other other low-priced ceramic raw materials, and producing archaizing bricks suitable for one rapid firing (burning time of 55 minutes and firing temperature <= 900DEG C). The raw materials comprise: waste glass 42-60%, cooked bauxite 18-25%, white mud 15-2%, bentonite 3-8%, sodium tripolyphosphate 5-8%, and pigment 3-4%. Prescription referred to the specific chemical composition, Al2O3 52-60%, SiO2 23-26%, Fe2O3 0-1%, CaO 6-8, MgO 0.5-1.0%, KNaO 8-10%, and others 3-4%. The formula can also include various plasticizers and electrolytes. The invention has the advantages of low energy consumption and simple process.

Description

technical field [0001] The invention relates to a production method of polished tiles, in particular to a technology for producing polished tiles by composite plasticizing and low-temperature sintering. The method is suitable for the technology of polishing tiles fired once and rapidly in a roller kiln. Background technique [0002] At present, the firing temperature of architectural ceramic products produced in large quantities and widely used at home and abroad is above 1150°C during the production process, and the firing temperature of products with low water absorption (such as polished tiles) is even as high as 1200°C. The firing temperature of high-quality polished tiles is 1220°C, and the building ceramics industry has become one of the largest energy-consuming households in the national economy. Due to the continuous rise in the prices of oil, electricity, gas and coal in the past 20 years, it has also curbed the rapid development of the building ceramics industry. d...

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Problems solved by technology

Although researchers from various countries have tried their best to reduce the high-temperature components in the body (SiO 2 、Al 2 o 3 ) content, increase flux content (RO, R 2 O) content, in order to produce enough liquid phase during the firing process, let the liquid phase absorb particles, discharge pores, make the product density reach the maximum, the volume reach the minimum, and the product can be completely sintered, but the ceramic tile produced in this way per kilogram of product The energy consumption still needs 6-10 megajoules. If you want to greatly reduce the firing temperature, reduce energy consumption, and reduce production costs, the existing sintering theory has already failed.

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