The power plant can choose brick of light qualitative clay 300 degrees with heat preservation brick, body close 1.2-1.3 is low-cost, the adiabatic heat-insulation layer that is high temperature equipment is used relatively many kinds of small qualitative adiabatic and refractory products.
30%-46% of content of AL2O3 of brick of light qualitative clay, brick of argillaceous heat preservation uses clay grog or grog of light qualitative clay is mixed but model clay is main raw material, use combustible law production. Burden and water mix make but model pug or slop, with extrusion or pouring shape, dry hind in 1250 ℃ - in atmosphere of 1350 ℃ oxidation firing. Dimension of norms of standard of brick of argillaceous heat preservation is 230*114*65mm, bulk density is 0.60-1.20g/cm3, compression intensity is 2.0-5.9mpa, thermal conductance is 0.221-0.442w/(m.k) , suit to use 300 degrees at the power plant to use the use requirement of close 1.2-1.3g/cm3 of body of heat preservation brick. The characteristic of brick of light qualitative clay: (1) economy: Can reduce fundamental cost, those who reduce frame is sectional, managing ferroconcrete can be remarkable the integrated cost of spare building. The design uses brick of light qualitative clay to weigh qualitative clay brick than using, integrated cost can reduce 5%~15% above; (2) practical: Use brick of light qualitative clay to be able to increase usable floor area, at the same time good as a result of effect of heat preservation of brick of light qualitative clay, reduce n to use up; (3) application property: Brick of light qualitative clay has good machinability, construction is convenient and simple, as a result of piece big, qualitative light, can reduce labor intensity, improve construction efficiency, shorten construction time limit for a project. Brick of light qualitative clay can be made with a variety of methods, main production method has the following kinds. One, burn-up adds content way this is the method that produces light qualitative firebrick to be used extensively. Joining burn-up to add the destination of content is to reduce firebrick density. Often use have curium wooden layer, charcoal, coal fines and other organic matter. The water content of pug is fluctuant inside the limits in 25~35% , the pug that has mixed passes tired stuff, shape in order to improve its function, use next but model law shapes, in goods firing in the process, the level that adds thing among them in burn-up (make an appointment with 500~1000 ℃ ) , maintain strong oxidation atmosphere, in order to make sure burn-up joins the burn oneself out of content. Firing temperature is 1250~1300 ℃ . With this kind of method production bulk density is 1.0~1.3 to overcome ／ centimeter the brick of light qualitative clay of 3, with respect to goods fireproof spend and burn systole to look again, appropriate is used below in 1350~1400 ℃ . 2, when bubble law makes firebrick with this kind of method, the stoma in goods is by special join the bubble place in pug to form. Bubble is the main component of pug, it has conclusive effect to the property of goods, pug is mixed by clinker, clay curium wood chip is comprised; The attune that makes with the water of 25~30% becomes going from place to place thick liquid; Next the foam that rejoin has made in the machine that hit bubble, mix even, use this kind to be undertaken by the slop of bubble place saturation mould, along with matrix together dry, junior travel is firing. The power plant introduces here 300 degrees with heat preservation brick, hope to be helped somewhat to everybody. Flourish Cheng Naicai provides fireproof material production, sale, construction and after service, aptitude is all ready, solve all sorts of problems of kiln furnace, construction signs formal contract, assure product quality and construction quality.
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