The wearability of silica brick and corundum brick which good

Silica brick and corundum brick are the firebrick of two kinds of different sort, the wearability of the wearability of carborundum brick and corundum brick is better, but the price is high, the proposal combines actual condition to choose appropriate firebrick.


Silica brick content of 2 oxidation silicon 94 ％ above. True density 2.35g/cm3. Have fight acid slag to erode performance. Higher high temperature intensity. Loading bate begins temperature 1670 ℃ of 1620 ～ . Use changeless form for a long time below high temperature. Thermal shock stability is low (hot exchange is 1~4 in water second) it is raw material with natural silica, adscititious and right amount mineralizer, in order to promote the quartz in base substrate quartz of translate into phosphor. In the classics below reducing atmosphere ℃ of 1350 ～ 14 30 is slow and firing. Heat to expand to the total volume that there is hundred 1.5~2.2 about when 1450 ℃ , this kind of remains expands can make cut seam join closely, make sure build by laying bricks or stones builds body to have good air-tightness and structural strength. Have service life to grow at the same time, reduce specific power consumption to wait for an advantage.

Carborundum brick is to point to what make for main raw material with carborundum advocate the firebrick that brilliant photograph is carborundum. Carborundum brick has admirable acid-proof sex, alkali resistance sex, wearability, high intensity, tall heatproof shake sex, hot coefficient of expansion small, thermal conductivity is good wait for an advantage, its defect is oxidisability difference is fought below high temperature, the value is relative more expensive. Normally the production method of carborundum brick is SiC bead, SiC pink and bond mix, classics tired makings, shape, dry hind firing for the product. Carborundum brick presses carborundum grain between of bond different can divide for: ① oxide (or silicate) combine carborundum, be like SiO: Or clay combines carborundum; ② nitrogen changes silicon (SiaN ㈠ combines carborundum; ③ nitrogen oxide (Si20N: ) combine carborundum; ④ Sialon(surpasses grand) combinative carborundum; ⑤ is united in wedlock oneself (namely fine SiC is united in wedlock) carborundum.


The content of corundum brick alumina is more than the 90 ％ , fireproof data products that gives priority to brilliant photograph with corundum. Intensity of very high normal temperature compression (can amount to 340MPa) . Tall loading bate begins temperature (be more than 1700 ℃ ) . Very good chemical stability, wait to all have stronger counteractive capacity to acidity or basic slag, metal and vitreous fluid. This brick has higher melting point, the performance below high temperature is steady, normal temperature and intensity of high temperature machinery and wearability are good. Fight the metal is eroded and fight oxidation, reductive function advantageous.
The wearability of silica brick and corundum brick which good consider wearability only, corundum brick is good, the wearability of carborundum brick is pretty good also, the proposal combines the specific use requirement of kiln furnace, will select right wear-resisting product.
Flourish Cheng Naicai is able to bear or endure as Central Plains of 15 years material character, pay attention to the amplification of oneself dimensions not only, more important is to stand in long-term development point of view from beginning to end, ceaseless development gives new-style fireproof data, satisfy more firm market demand ceaselessly thereby, comply with the development of tendency of the day. Major of flourish Cheng Naicai produces all sorts of tall aluminous bricks, firebrick, brick of silica brick, corundum, pouring the product such as makings, welcome broad client to come to a factory make an on-the-spot investigation on the spot, establish long cooperative relationship.