Low cement is fireproof and pouring expect even if point to aluminous acerbity calcic cement to add a quantity to be less than of 8% can irrigate build fireproof material. Press British ASTM demand, low cement is pouring water content of CaO of the regulation in makings under 2.5% , be in normally 1.0~2.5, when CaO water content under 1% when become extremely low cement pouring makings. With general and fireproof pouring makings is different is: Low cement, extremely low cement is pouring makings help advance somebody's career calcic cement of the one part in matrix or great majority aluminous acid is expected by composition and Zhu Cai same or similar exceed small pink to replace. The late effect hurried that still takes right amount additive and full amount together coagulates agent.
Because use exceed small pink to replace calcic cement of one part aluminous acid, accordingly this kind fireproof and pouring makings have give out characteristic:
1. is pouring the CaO water content in makings is inferior, can reduce photograph of frit of raw material low the Communist Party of China change into, promoted then fireproof degree, tall compressive strength and; of the sex that fight broken bits
2. is pouring the agitate water requirement of makings can general fireproof and pouring the 1/2—1/3(of makings is about among 4%-6% ) , because this hole leads low, cubage opposite density tall;
The thing of cement to hydrate that after 3. figuration maintains, changes is little, adding lukewarm bake what key of a lot of hydration cannot find to destroy place to cause when making is medium is spent reduce, just move qualitative processing to spend subsequently promote and slowly to calcine, compressive strength also promotes slowly.
Low cement, extremely low cement is pouring the material of makings has sticky earthy, tall aluminium to make, Molaishi is qualitative, fireproof the carbon that pledge and contains and carborundum are qualitative etc. Its condiment compose becomes: Makings of grain of material of stone of fire prevention material, fire prevention, proper super- small pink, proper with grain aluminium acerbity calcic cement (as late effect hurried coagulates agent) the thickener with microanalysis (efficient degumming agent) . Choose normally multi-purpose condiment, cent becomes 5~3mm, 3-1mm, 1~0.2mm, 0.2~0.074mm, 0.074~0.044mm, reach its under 1μm.
General and as fireproof as what be the same as material pouring makings is comparative, low cement, extremely low cement is fireproof and pouring the technical properties of makings is stronger, its fight broken bits hydrophily and sex of the adhere that fight broken bits.
Low cement and extremely low cement are fireproof and pouring makings show level to already was in metallurgical industry, petro-chemical equipment, mechanical equipment is made and the industrial kiln of the production industry such as adornment building materials uses promotion on furnace, win pretty good application practical effect and economic gains.
Clay makes low cement with tall aluminium character pouring makings li of line that can regard furnace of hot-blast stove, soaking, various heat treatment as furnace and machinery.
Mo Laishi is qualitative low cement is pouring makings can make line of bundle up of radiating tube of water-cooling of the line in burner of various tall , hot-blast stove wait, fireproof pledge and contain Cr fireproof qualitative low cement is fireproof and pouring makings but as furnace of the line in area of triangle of roof of furnace of puddling electric arc, molten steel outside chastening equipment the line system of a few component, if spew metallurgical industry uses overall spray gun,line system, RH and DH vavuum pump take off gas device and beforehand the tall wear-resisting of reactor of type of canal of catalytic cracking of the line in furnace of induction of system of dip pipe line, dc, petro-chemical equipment caustic liner.
Al2O3-SiC-C is qualitative low cement is pouring expect as taphole of channel of taphole of puddling blast furnace, cupola normalization of groove, molten iron treats the line form that waits with overall spray gun.
The low cement that MgO-Al2O3 pledges or Al2O3-MgO.Al2O3 pledges is pouring expect li of line that waits as steel bag and tapping chamfer.
Get Price
WhatsApp