Rotary kiln with refractory bricks

Rotary kiln lining role is to protect the cylinder from high temperature, from the heat insulation to reduce heat loss. Rotary kiln consumes a lot of refractory material, the general kiln high temperature belt kiln lining needs to be replaced frequently, its replacement period is kiln running cycle. Maintenance of good kiln lining plays an important role in long-term stable high quality and high yield.
1. Clay brick thermal stability is better, high temperature hanging kiln leather and other items when the operation less. Although its refractoriness is slightly lower than that of high alumina bricks, it is sufficient for most colored metallurgical kilns and can be used for the decomposition zone, preheating zone and drying zone of cement kilns.
2. High alumina brick AL2O3 content higher than clay brick, high refractoriness. A high alumina brick with an AL2O3 content of more than 55% is commonly used in cement kiln firing zones and cooling belts. Alumina roasting kiln has also used high alumina bricks, the starting point is high alumina brick wear SiO2 content is low, to ensure the quality of the product is beneficial. But the practice proved that the kiln lining tile wear is very small.
3. Phosphate refractory brick is a new development of China does not burn refractory cementitious material. Whether used for firing zone, decomposition zone or cooling zone, the life is generally more than the original distribution of brick, high alumina brick extension 2-6 times. Phosphate brick of the salient features: with frequent kiln, open kiln does not burst, no layer of peeling off the good stability in the medium temperature conditions, excellent wear resistance, high temperature strength, a better resistance to clinker erosion ability, its thermal conductivity faster.
4. Magnesium aluminum brick is a basic refractory material, can effectively resist the erosion of alkaline slag. Zinc leaching slag contains alkaline earth metal is higher, especially iron and iron, in the volatile kiln volatiles formed within the slag is alkaline slag. Acidic clay brick, high alumina brick resistance to alkaline slag is poor, corrosion rate block. Therefore, in the zinc leaching residue volatilization kiln volatilization zone and preheating zone and lead water quenching slag volatilization kiln volatilization zone with magnesium aluminum brick or magnesia brick, the service life is greatly extended.
Rotary kiln is a kind of thermal equipment calcines lump, bulk and slurry materials. It is widely used in cement & construction, non-ferrous metals, lime, ferrous metals, refractory materials, industrial chemicals, paper making industries etc.