Cheap Brown Aluminum Oxide Factory Belgium

The selection of refractories for hot blast furnace is mainly determined by the temperature of hot blast(white alumina). When the temperature of hot blast is lower than 900 ℃, clay bricks are generally used for masonry, and some of them have a service life of about 20 years(aluminium oxide 36 grit). At the same time, the high temperature creep performance of refractory bricks should be fully considered, so as to ensure the safety of production in the long-term work.

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Performance and application position of firebrick for blast furnace hot blast stove in Japan(black corundum). When the wind temperature is higher than 900 ℃, the traditional materials of the lining at high temperature and the hot blast stove of gerussia blast furnace are as follows: the ball top and upper masonry are constructed with high alumina bricks with Al2O3 content of 62% ~ 72%(aluminium oxide grit 24 mesh), and the middle and lower masonry are constructed with clay bricks with Al2O3 content of 38%.

In addition, the service life of Japan's hot blast stove can generally be used for two blast furnaces, i.e. 15-20 years(pink corundum). The air temperature of the hot blast stove is significantly increased, so the low expansion silica brick is generally used for the construction of Qiuyi and the 6-7m high part of the upper part(brown fused alumina grit), and the mullite brick, corundum brick, kaolin brick and clay brick are used for the rest parts according to the different temperature.

Silicon bricks are used to build all high temperature parts(brown aluminium oxide manufacturer), high aluminum bricks are used to build lining and lattice bricks in middle temperature parts, mullite bricks are used to build lining near hot air outlet, and clay bricks are generally used to build other parts(black silicon carbide factory). It can be seen from the table that the black silica brick is generally used for the top, wall and upper part of lattice brick of hot blast stove in Western Europe.

In the black silica brick, the content of iron oxide and titanium oxide is high(brown fused alumina for grinding), the true density is large, the thermal conductivity is good, the heat storage capacity is strong, so the thermal efficiency is high; the middle and lower furnace walls and lattice bricks of the hot blast furnace are respectively made of high aluminum bricks and clay bricks(black silicon carbide suppliers). Obviously, the lower the height is, the closer the lower the checker brick is, the greater the load it bears.

High efficiency lattice brick has a large heating area, so the thermal efficiency is high(brown fused alumina). The refractories used for blast furnace hot blast stove in Germany are silica brick, sillimanite brick, mullite brick, high alumina brick and clay brick from high temperature area to low temperature area(corundum sand). Different types and brands of refractory bricks are selected for different parts of use, the pressure loss is large, so as to make the best use of everything.

In China, the off stove hot blast stove is generally of internal combustion type, its lining and lattice brick are generally built with high aluminum bricks and clay bricks(brown aluminum oxide); the high temperature part of the external combustion hot blast stove is generally built with silicon bricks, the heat exchange efficiency of hot blast furnaces(white aluminum oxide 120 grit), and the middle and low temperature parts are successively built with high aluminum bricks and clay bricks.

It must be noted that recently, the volume stability of refractories(brown aluminium oxide), the high temperature load creep resistance of refractories, the thermal expansion performance of refractories, and the volume stability of refractories. However, because of their thin brick walls, deformation may occur, and because the flue is small, which is easy to cause blockage(brown aluminum oxide blast media). To sum up, the refractories used in blast furnace hot blast stove are similar in different countries.