In the electric stove body of heater that light simple fireproof stuff builds in build by laying bricks or stones, constant cent is fireproof layer, high temperature fireproof heat-insulation layer, medium lukewarm fireproof heat-insulation layer. To reduce boiler setting the accumulation of heat of itself is mixed through boiler setting the quantity of heat of outward be lost, when warming up in order to shorten, ask, managing heat energy, often standing by high temperature of electric stove liner ability of a thermal resistance is put near fireproof layer stronger, already fireproof the light simple fireproof stuff of heat preservation. Although this is planted,the bulk density of material has 0.4 ～ only 1.39 ／ Cm3, however ability the high temperature of 1200 ℃ above, be used as electric stove liner and material of high temperature heat-insulation layer widely. But also the bulk density as a result of it low, porosity is tall, cause mechanical strength difference of function of low, wear-resisting, fight chemistry caustic poorer also, intensity of machinery of high temperature of Lv of the take an examination when choosing whether contented requirement. The production method of light qualitative firebrick has 3 kinds: Burn-up adds content way (join wood chip normally) , bubble law and chemical law. At present commonly used light qualitative firebrick has light qualitative saggar to pledge brick, light qualitative fireproof silica brick, gently fireproof tall aluminous brick. 1, brick of light qualitative clay pledges argillaceous brick is gently become for fire of main raw material with argillaceous grog, bulk density should not be more than.4 ～ by corresponding brand 1.39 ／ Cm3, its are main function index sees figure below. Brick of light qualitative saggar basically is used at liner of heat treatment furnace, yi Ke is used at the high temperature heat-insulating material of furnace. Its weakness is porosity big, wearability is poor, loading bate begins temperature only 1100 ℃ left and right sides, thermal stability is poor, fireproof degree as adjacent as argillaceous brick. 2, the part of body of build by laying bricks or stones that light qualitative fireproof silica brick pledges fireproof silica brick is used at temperature not to exceed 1550 ℃ gently, 2 class brick uses as high temperature heat-insulating material. The main reason of light qualitative fireproof silica brick changes index to see figure below. Light qualitative fireproof silica brick has higher loading bate temperature (1600 ℃ control) , and the remains below high temperature expands it is under 0.2 ％ , use extensively at place of roof, boiler setting. 3, light qualitative tall aluminous brick (brick of bubble tall aluminium) density of bulk of light qualitative tall aluminous brick is Cm3 of ／ of 0.4 ～ 1.0g. Density is big can use at contacting place with blaze directly, but unfavorable erode with fast air stream or high temperature fuses place is contacted. Density makes heat preservation smally use, use temperature should not prep above 1450 ℃ , pledge gently fireproof the main function index of tall aluminous brick sees figure below. Light qualitative tall aluminous brick is used at build by laying bricks or stones to build kiln of furnace of of all kinds high temperature, electric stove and high temperature insulation material. Note: Goods PM-1.0, PM-0.8 can be used at having stock of melt of intense high temperature to erode to reach erode the place of action, contact with blaze directly; Products of the others brand uses as heat-insulation layer. 4, light qualitative alumina brick (bubble alumina brick) the brick becomes light qualitative alumina by fire of fine pink treatment, brick of property excel tall aluminium, commonly used the insulation material at place of electric stove high temperature, use temperature is 1300 ℃ , temperature crosses tall meeting occurrence systole to be out of shape. 5, alumina is hollow the ball development as science and technology, a few advanced and fireproof insulation material appear ceaselessly, if alumina is hollow,the ball is. Fireproof and hollow ball shows alumina grain shape is used, also can add a person the build by laying bricks or stones after proper cementing agent shapes is built with. 6, fireproof fiber material is fireproof fiber is a kind of new-style fireproof material, hold concurrently fireproof the action with heat preservation, have quality at the same time light, coefficient of thermal conductivity low, specific heat shake of good, high temperature resistant, heat-resisting mixes small, thermal stability fight machinery to shake, a lot of advantages such as soft, easy construction, use as material of liner of industrial kiln furnace, but 30 ％ control managing the sources of energy, reduce lining quality 90 ％ above, economic body of heater uses rolled steel 50 ％ of 20 ％ ～ , be chosen new-style light simple fireproof stuff is advocated when design and electric stove of efficiency of production high fever. Made blanket, felt, paper with fireproof fiber cotton, board, goods of abnormity of rope, vacuum, these appearance characteristics are built for the build by laying bricks or stones of electric stove offerred huge to go to the lavatory. Fiber is OK extrusion reachs the break of electric stove of bricky build by laying bricks or stones and the place of all blemish, litre of gentle and cooling cycle plus fireproof fiber lining is short, reduced power consumption greatly, improved work efficiency. Defect is this kind of material production cost is at present higher, because this is being used,go up the limitation with get certain. Fireproof fibrous production methods has a lot of kinds, basically introduce the following kinds: (1) melt gush plays a way. It is raw material inside muffle furnace melt, those who form stability flow derivative, with compress air or high-pressured vapour gush to be blown into fiber silk. (2) melt abstraction law and circumgyrate law. Stock of melt of high temperature furnace is formed stream, reentry is abstracted all right or make fiber through platen of high speed revolving. (3) high speed centrifugal process. Will flow with high speed centrifugal swing into fiber. (4) colloid law. Make up stock colloid salt kind, become fiber base substrate in the solidify below certain condition, latter to calcine becomes staple. In addition, still carrier law, precursory system way, single crystal pulls filar law and chemical law to wait. Light simple fireproof stuff builds what aperture craft introduces air hole 3 kinds to form is a crucial link in pledging fireproof material manufactures technology gently. Stomatic size, appearance, those who make an amount how many and the distributinging circumstance quality that affects product directly, the method that forms air hole is very much, pledge gently chemical method basically is used in production of fireproof data industry in our country, bubble law and combustible add a way. 1, law of chemical law chemistry is to point to a few material that can produce bleb through chemical reaction are added in preform. If join carbonate and instrument of acerbity, causticity and aluminium or metal and acid to wait, lend chemical reaction generation gas, make goods scores air hole. But because this kind of method reacts rapid, bleb makes not easy control, want to ask to join right amount depressor according to craft. 2, law of bubble law bubble is blowing agent is added in slop, be like soft black, through mechanical method processing generates bubble, as similar as chemical law, the bleb stability that bubble law produces is bad, want to add fixed agent control. 3, combustible joins law combustible to add a way is to show it is OK to be joined in slimy the material that burns, be like wood chip. These join content to be burned when high temperature of classics of light simple fireproof stuff is synthesized, generation is stomatic. But this method is having goods preform strength low, finished product is changeful the defect such as form, need control synthesizes craft to overcome. Fireproof material occurrence craze, fall off, easy how to wear away to do? Want to solve a problem thoroughly, need to be dug from germ, the analysis gives real reason, flourish Cheng Naicai is engaged in be able to bear or endure service of timber production, research and development is old, can solve all sorts of difficulty problems of liner of furnace of high temperature kiln, welcome broad new old friend to seek advice reach technical communication.
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