Light cordierite-mullite kiln furniture materials prepared through bentonite tailings

Abstract

The invention relates to light cordierite-mullite kiln furniture materials prepared through bentonite tailings. The light cordierite-mullite kiln furniture materials comprise, by weight, 25-35% of the bentonite tailings, 15-25% of cordierite-mullite kiln furniture waste materials, 10-25% of sillimanite, 10-25% of chlorite, 5-10% of low-sodium aluminum oxide, 15-25% of light mullite materials, 2-5% of wood flour and cellulose of 0.2-0.4% of the weight of the above-mentioned raw materials, and the bentonite tailings are tailings with high-purity bentonite components high in montmorillonite content in bentonite ore extracted. The bentonite tailings and the cordierite-mullite kiln furniture waste materials are used in the materials, through the organic combination of the components, the kiln furniture materials with the performance similar to the performance of cordierite-mullite are obtained, ore resources are effectively utilized, waste is truly made to be profitable, the production cost of the kiln furniture materials is lowered, meanwhile, a product is low in volume density and belongs to the light cordierite-mullite, and the energy saving performance is good.

Description

technical field [0001] The invention relates to the field of kiln furniture materials, in particular to a light cordierite-mullite kiln furniture material prepared from bentonite tailings, and the kiln furniture has the performance of light cordierite-mullite kiln furniture. Background technique [0002] Bentonite is a kind of clay rock, also known as montmorillonite clay rock, often containing a small amount of illite, kaolinite, halloysite, chlorite, zeolite, quartz, feldspar, calcite, etc.; generally white, light yellow, Due to the change of iron content, it is light gray, light green, pink, brown red, brick red, gray black, etc.; it has waxy, earthy or greasy luster; some bentonites are loose like soil, and some are dense and hard. The main chemical components are silicon dioxide, aluminum oxide and water, and also contain iron, magnesium, calcium, sodium, potassium and other elements, Na 2 The content of O and CaO has a great influence on the physical and chemical prop...

AI Technical Summary

Problems solved by technology

Cordierite has a very low coefficient of thermal expansion and good thermal shock stability, but its high temperature resistance is not strong. Mullite has good high temperature resistance and strong thermal shock resistance, but its thermal shock stability is not good enough. Combining the advantages of the two , develop strengths and avoid weaknesses, and obtain cordierite-mullite products with low expansion coefficient and strong high temperature resistance

[0007] However, the body density of the cordierite-mullite kiln furniture materials that are commonly available at present is 1.75-2.15g / cm 3 , the weight of the product is large, the heat absorption will be more, and the consumption of raw materials and fuel will be greater

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