Mo Laishi brick is the silicon aluminous system that gives priority to brilliant photograph with Molaishi refractory products. Because electric frit not comes of stone brick advocate brilliant photograph Mo Laishi, because of this Molaishi fireproof degree control in 1850 ℃ , loading bate temperature is high, rate of high temperature creep is low, heatproof shake sex is good, acid-proof sex is eroded.
Electric frit not comes stone brick is raw material with tall aluminous alumina, the composition that matchs different alumina Molaishi (3Al2O3 · 2SiO2, quality per cent is Al2O3 72% , SiO2 28%) . Melt is controlled in 2300 ℃ , issue mould at 1850 ℃ within sand mold, undertake anneal next in order to eliminate stress. Main brilliant photograph is Molaishi and corundum, vitreous photograph fill is in brilliant alternate with. Its are able to bear or endure vitreous fluid erodes the fireproof data that compares agglomeration strong, but not as fireproof as other report frit material. Join a few (2 zirconia of 7%~8.5%) , can make not come decrescent of stone brilliant photograph, bricky organization is compact, the quantity adds Mo Laishi to 60%~70% , opposite ground reduced the content of vitreous photograph, crackle that reduced product. Electric frit not comes the hot coefficient of expansion of stone brick is low, heatproof shake sex is good, be able to bear or endure the aggressivity of vitreous fluid is strong.
Production report frit not comes when stone brick, in cooling process first crystal of separate out corundum, not come in separate out next stone crystal. The rest of a few the epigenesis such as SiO2, Al2O3, Fe2O3, CaO, MgO, Na2O is vitreous photograph. What vitreous photograph occupies scale to amount to in the brick 25% . Contain material of a lot of low melting point among them, because this fights aggressivity,differ than brick of other report frit. Bleb and reproducibility material still exist in vitreous photograph, the meeting when be being used consequently pollutes vitreous fluid.
Standard of agreement of fireproof material factory sets, the brand of Mo Laishi brick is electric frit ShHML. The manage of goods changes index, permissible variation in dimension and exterior quality to see the kind that express place.
The manage of electric frit Mo Laishi changes target
Electric frit not comes the permissible variation in dimension of stone brick and exterior quality
Mo Laishi brick shoulds not be in 1450 ℃ above with alkaline kind of material contact, will make Molaishi is decomposed otherwise. Below the reducing atmosphere of 1370 ℃ above, mo Laishi also will be decomposed, partial SiO2 turns into gaseous SiO leaves bricky put oneself in another's position. In temperature prep above when 1650 ℃ , although not be reducing atmosphere and in inferior oxygen cent pressing falls, mo Laishi also can be decomposed.
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