Blast furnace with corundum mullite bricks

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Product features: the blast furnace by using artificial fused corundum mullite bricks or sintering corundum and mullite raw materials as the main raw material, after high pressure forming, high temperature sintering, the main mineral composition of mullite and corundum phase. Product has white appearance, size accurate, it has excellent high temperature performance and chemical erosion resistance, mainly used for blast furnace bottom and furnace water-analogy-simulation, is one of the big blast furnace in a high-level "ceramic cup" material.


项目
Item

GM-80

GM-75

Al2O3,  %             不小于
Min

80

75  

Fe2O33,  %             不大于
max

0.8

1.5

耐火度,℃            不低于
Refractoriness         min

1800

1800

荷重软化开始温度,℃  不低于
RUL                   min

1700

1.5

重烧线变化,%         1500℃x3h
P.L.C

0-0.5

0- 0.5

显气孔率,%           不大于
A.P.                 max

18

18

常温耐压强度,MPa     不小于
CCS                   min

100

80




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Q:What are the advantages and disadvantages of clay refractory bricks?
The clay brick refractory brick and be roughly the same, up to 1690~1730 DEG C, but the load softening temperature is 200 degrees Celsius above the low brick. Because clay bricks contain crystalline Mullite with high refractoriness, they contain nearly half of the amorphous glass phase of low melting point.In the temperature range of 0~1000 DEG C, the clay brick volume increases with temperature uniform expansion, linear expansion curve approximates a straight line, the line expansion rate is 0.6%~0.7%, about half of the brick. When the temperature reaches 1200 degrees Celsius and then continues to heat up, the volume will begin to shrink from the maximum expansion. The residual shrinkage of clay brick results in the cracking of masonry joints, which is a major drawback of clay bricks. When the temperature is above 1200 degrees, the low melting point of the clay brick gradually melts because the particles are very close to each other due to surface tension, resulting in volume shrinkage.
Q:2000 degree of high temperature materials, which belong to high temperature insulation materials?
What can withstand 2000 degree high temperature materials on the market? What are the materials belong to high temperature materials? High temperature insulation material the most common are the following: calcium silicate shell, aluminum silicate cotton felt, glass surface, diatomite, vermiculite, foamed cement etc.. Among them, the first three are the most common, especially the aluminum silicate cotton felt, which can withstand 650 degrees of high temperature.
Q:Masonry method for boiler refractory brick
In accordance with the construction procedure of from bottom to top, from the inside to the outside of the drum and the lower part of the principle of convection tube flame plate concrete when the interval is from top to bottom.
Q:Such purpose and scope please give me detailed points thank you because I am learning stage
Mainly used for coke oven carbonization chamber and the combustion chamber wall, open hearth furnace regenerator and a sediment chamber, soaking furnace, glass furnace, refractory materials and ceramic brick kiln, kiln vault and other load-bearing parts. Also used for high temperature bearing part of hot blast stove and acid open hearth furnace.
Q:Magnesia brick
General can be divided into sintered magnesia brick (also called burnt magnesia brick) and chemically bonded magnesia brick (also known as the two major categories of not burned magnesia brick). Purity and high firing temperature of magnesia, due to the direct contact of periclase grains, known as direct bonded magnesite brick; made of fused magnesia bricks called electrically fused magnesite brick.
Q:Why are clay bricks used when buildings are below zero? Frost heaving, water absorption, or something?
The clay brick has a certain strength, and has better heat insulation and sound insulation performance, and the interior wall of the winter can not appear condensation phenomenon, and the price is low. Although a variety of new wall materials are emerging, clay bricks will still be used as a main material for masonry work in the future
Q:What is the bulk density of the sintered bricks?
The Dragon such high aluminum refractory brick density is generally around 1000, heavy refractory brick, high alumina brick HLGX heavy weight in general 2000Kg/m fand.
Q:Can you direct the clay brick walls embryo
Times are different, where there is no modern calcination process. With glutinous rice water in the soil, but glue well, but there is no comparable with cement and other building materials. Not long, can not withstand weathering.
Q:Is magnesium spinel harmful to the body? Such as title magnesium spinel, harmful to the body?
Hospital tests revealed that Alzheimer's patients had more than 5~30 times more aluminum in brain tissue than normal subjects. When the aluminum content in the human body exceeds 5~10 times that of normal people, it can inhibit the absorption of phosphorus by the digestive tract, reduce the level of serum inorganic phosphorus, cause osteomalacia and joint pain. Aluminum chloride and aluminum hydroxide, aluminum alkyl and salt and other drugs, the short term can produce toxic side effects.
Q:What are the high temperature refractory mortars made of?
Siliceous mud, mineral composition and chemical composition is similar with silica, excellent corrosion resistance, water glass slurry, drying shrinkage, but also can be used for bonding fiber products, sealing furnace wall.

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