Well-known, hot stove of blast furnace, mine and calcium carbide furnace make medium internal temperature in the smelter exceedingly tall, the iron fluid of smelt or ferroalloy liquid or slaggy have very strong osmotic, high temperature liquid, extremely slaggy easy eat fireproof stuff. To get used to such working environment, most enterprise chooses to pledge with charcoal or the fireproof stuff with graphite simple material undertakes the build by laying bricks or stones of liner builds construction.
Mine heats up furnace
Fireproof material divides carbon and black lead roughly for the following sort model:
(1) carbon is qualitative fireproof material (charcoal brick) . Carbon is qualitative fireproof material (charcoal brick) with heating up refine carbon regards the small crystalloid such as anthracitic, coke as main raw material, the basis uses a requirement, can enter pink of man-made black lead, natural black lead through matching, add or do not add SiC and material of pottery and porcelain to wait, wait for bond with coal tar bitumen or colophony, undertake mixing practice, shape and firing. Its characteristic is: Have strength tall, fight erode, wear-resisting caustic, fight alkalescent sex of strong, heatproof shake is good wait for good performance.
Hearth charcoal brick
(2) man-made black lead is qualitative fireproof material (charcoal brick) . Carbon is qualitative fireproof material (charcoal brick) with oil anxious or coal pitch coke is main raw material, wait for bond with coal tar bitumen or colophony, via mixing practice, shape, firing, hand-in-hand travel graphitization is handled () of about 3000 ℃ . Black lead of man-made of this kind of tall purity is qualitative fireproof material (charcoal brick) hot conductibility is good, fight thermal shock sex, alkali resistance sex to wait so very good.
(3) natural black lead is qualitative fireproof material (charcoal brick) . Natural black lead is qualitative fireproof material (charcoal brick) good with crystallization development natural black lead serves as advocate raw material, according to need, join pink of man-made black lead to wait, wait for bond to undertake mixture with coal tar bitumen, colophony or clay, shape next and firing. Have be able to bear or endure erode, it is heatproof shake, good to fight oxidisability and hot conductibility wait for good performance.
(4) special carbon is qualitative fireproof material. In the heat-insulating material that high temperature furnace uses, expectation chooses the special carbon simple stuff that has certain density, if expand body of black lead profiling, perhaps wait to be made for main body with carbon fiber or brilliant beard board and felt, poriferous press body to wait character replace the fireproof heat-insulating material that uses so special carbon pledges material is returned can regard lining as amortize material, brick seams material to use.
(Form of 5) carbon qualitative adventitious is fireproof material. Fireproof material basically has look of carbolic qualitative adventitious carbon pounds dozen of makings, carbon to be pressed character character note makings and carbolic paste to wait. Latter is mix the mixture of all sorts of carbon raw material and bond practice to regard liner of furnace of high temperature kiln as fireproof material, amortize material, brick into carbolic paste seam material to wait.
Anyhow, the design of liner of hot stove of blast furnace, mine, calcium carbide furnace is configured even the smelt environment according to kiln furnace itself, and the chemistry of smelt raw material configuration design that will make major, be achieved in order to expect or surmount the end that expects service life.
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