Silicon Mullite Bricks
PRODUCTS
Silica Mullite Brick of Furnace Cement
Description
Since the transition zone is not protected by the kiln skin, it is easily affected by the reducing atmosphere and high heat load, and is susceptible to material wear. Silica bricks have excellent wear resistance, good spalling resistance and thermal shock stability, and are suitable for use at the end of the transition zone of cement kilns.
Feature
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In the production process of refractory bricks, poor molding or firing problems may be related to unreasonable particle grading.
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Application of Silica Mullite Brick in Blast Furnace Cement
1. Silicon mullite refractory bricks are generally used in cement rotary kilns. Below we analyze the application of silica bricks in cement rotary kilns.
2. The silicon mullite refractory bricks produced in my country have been widely used in large cement rotary kilns. Silicon mullite refractory bricks It is understood that some cement rotary kiln bodies are directly combined with magnesia bricks except for the firing zone about 20m long, and refractory castables are used for each 0.8m of the front and rear kiln mouths. In the rear part of the firing zone, the so-called secondary firing zone, Silica Mullite Brick are generally the same as the firing zone and are directly bonded with magnesia bricks, but the kiln skin is difficult to stabilize. Due to the poor thermal shock stability and low wear resistance of magnesia bricks, the joint between the bricks and the kiln skin is easy to peel off from the kiln skin, which affects the service life of the segment. However, silica-mullite bricks have good thermal shock stability, but silica-mullite refractory bricks have good thermal shock stability and will not crack during use. Exfoliates, resists erosion, and extends service life.
3. The surface temperature of Silica Mullite Brick in the transition zone of the cement rotary kiln is about 1400°C. The temperature of the front tropical zone, cooling zone and other parts is lower than that of the transition zone. There is a protective kiln skin in the firing zone, so the brick surface temperature is not high. The load softening starting temperature of Silica Mullite Brick is above 1500°C. In particular, Silica Mullite Brick have a dense structure and are composed of high-hardness minerals, corundum, silicon carbide, and mullite. They have particularly good wear resistance and are very suitable for transition zone bricks. The compressive strength and softening temperature of refractory silica mullite are significantly higher than those of anti-flaking high alumina bricks. Thermal shock resistance, corrosion resistance, wear resistance and thermal conductivity are not high. Silicon mullite refractory materials are required for the process characteristics of the post-transition zone. The service life is 1.5-2 times that of anti-flaking bricks. It has good wear resistance and is more suitable for cooling zones. Its service life can reach more than two years. The service life of silicon molybdenum brick is 3-5 times that of high alumina refractory brick. The refractory bricks used in different parts of the cement rotary kiln should be selected according to the working environment of different sections of the rotary kiln.
Xinyuan Refractory Materials Factory Blast Furnace Cement Supplier Silicon Molybdenum Brick
Xinyuan Refractory Material Factory has rich refractory raw materials and more than 20 years of refractory brick manufacturing experience. Xinyuan Refractory Material Factory can provide specifications, categories, competitive prices and high-quality refractory castable products.
Rongsheng Refractory Castable Material Factory can provide any certificate according to customer requirements, such as ISO9001 certificate
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