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Detailed Analysis of Kaolin Rotary Kiln Refractory

Sep 08 2015

Kaolin rotary kiln is the heating equipment which is subjected to heat materials, it can be widely used in non-ferrous metallurgy, ferrous metallurgy, cement, chemical and other industries. The inside material use of the kiln refractory has a direct impact on product quality. For a buyer, it is sufficient to understand the correct use of this product’s refractories, in the following article, we will explain kaolin rotary kiln’s refractory in detail.

1. Performance characteristics of refractories
Refractory of kaolin rotary kiln is not lower than 1580℃ refractoriness of inorganic non-metallic materials. It can be used in various industrial fields of petroleum, metallurgy, chemical industry, machinery manufacturing, in which the largest amount in the metallurgical industry, accounting for 50% to 60% of total production. Kaolin rotary kiln refractory nature of the use is its resistance to high-temperature thermal load, in addition to these properties also have chemical and mechanical action by other physical and not easily damaged, these properties can only judge the merits of the material, but also  directly examine its applicability in high temperatures according to the use working conditions.
2. The purpose of refractories
(1) To prevent kaolin rotary kiln body’s directly damage by high temperature flame or air flow;
(2) To prevent harmful substances and materials or stream erosion of the kiln kiln corrosion;
(3) To reduce the temperature of the kiln, to prevent the air oxygen corrosion due to the high kiln temperature ;
(4) To stored thermal energy, to reach the role of insulation effect.
3. Selection of refractories
(1) See its refractoriness, it is an important indicator to evaluate the refractories;
(2) Volume Stability: Refractories of good stability can guarantee the stability of the building body of refractory material, to avoid damage to the whole structure.
(3) Thermal shock resistance: the device during use, may often be a strong quenching, rapid thermal effect, the temperature in a short time became pale, kaolin rotary kiln refractory material inside will be because of sharp changes in temperature and stress, the size of this stress, depending on the organizational structure, thermal expansion, thermal conductivity and elastic modulus of equipment and other factors.

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