2015年4月29日星期三

The production process of refractory materials

According to the product and density of the different shape, sintering method, casting and meltrefractory brickblowing process. The sintering process is part of the raw material will burn in mature, crushing and screening, and then according to a certain ratio and raw material mixing, molding, drying and firing after. Raw materials burn to the gas in water, organic impurities, sulfate decomposition and burning, to reduce product firing shrinkage, ensure the accuracy of refractories size. Raw materials need to be screened in crushing and grinding is, because the billet is graded by the powder of different particle size, can guarantee the most compact and dense body.
In order to make all kinds of raw material and clinker composition and particle uniformity, for mixing, adding binder, in order to enhance the bonding strength of the blank. Such as aluminum silicate material is mixed with clay, magnesium billets into sulfite pulp waste liquid,Ceramic Fiber Blanketsilicon material with lime milk. According to the material moisture, can adopt semi dry method (containing about 5% of water), plastic molding (containing about 15% moisture) and grouting molding (containing about 40% of water). And then drying and firing. Casting is the raw material through blending blending and grinding processes, directly in high temperature melting, casting, the cooling crystallization, annealing become products. As cast mullite brick, corundum brick and magnesia brick etc… Their body is compact, high mechanical strength, high temperature strength, good slag resistance, use range expanding. Melt blowing method is to put the ingredients melting, with high pressure air or steam injection, dispersing method of fiber and hollow spheres. Products are mainly used as lightweight refractory, insulation material. In addition, also can be made into powdered or granular unshaped refractory materials, the tar, asphalt, used in cement, phosphate, sulfate and chloride salt bond cementation, not forming and sintering and direct use.

2015年4月27日星期一

New type refractory coatings improve furnace life 3 times

High temperature furnace refractory castable, including insulating brick, metal, ceramic, refractory fiber, quartz sand, silicon carbide, quartz glass. High temperature furnace refractoryRefractory Fiber Boardmaterial in high temperature, high temperature resistance, oxidation resistance, corrosion resistance, high strength, bending, expansion coefficient, wear rate is relatively serious. After long time operation of high temperature, high temperature furnace refractories is easy to appear the crisp, crack, fall off, aging, thermal insulation characteristics of the poor, to bring great security risks furnace and kiln kiln shutdown serious energy loss, not repair, serious economic losses. Now  Xinmi Changing Refractories Co., the company for many years R & D and production of ZS-1022 furnace lining protection coating, the coating selection of Xinmi Changxing special high temperature film forming solution, the ceramic oxide, silicon carbide, rare earth oxide, ceramicRefractory  fiber fiber refractory inorganic materials in high speed dispersion polymerization and. High temperature resistant, impact resistance, aging resistance, high coefficient of linear expansion, convenient construction, high adhesion. High temperature furnace refractory coating,  furnace lining to protective clothing to put on a layer of solid, protecting furnace lining refractory material good, forming a layer of high temperature refractory coating dense integration, greatly prolong the furnace lining materials using time and reduce the damage rate of the furnace lining materials, repair repair greatly shorten the time, prolong furnace the normal use of time more than 3 times, can bring considerable economic benefits to the enterprise.