Vitreous kiln differs with what pledge heat preservation brick presses its raw material gently, can divide for 6 kinds big. Its application pledges gently to be extensively silica brick, diatomite brick. Brick of light qualitative heat preservation has the advantage with adiabatic good performance, but the compression sex, sex that fight broken bits, heatproof shake sex is poorer, reason cannot be contacted directly with vitreous fluid or blaze. 1, light qualitative silica brick. Light qualitative silicon pledges adiabatic brick is the SiO2 content that controls for main raw material with silica do not be less than the adiabatic and refractory products of 91% . Light qualitative silicon pledges the bulk of adiabatic brick is 0.9~1.1g/cm3, thermal conductance wants the in part of common silica brick only, heatproof shake is good, its loading bate begins temperature to be able to amount to 1600 ℃ , brick of outclass clay qualitative heat insolation. Consequently high use temperature can amount to brick of silicon qualitative heat insolation 1550 ℃ . Not contractive below high temperature, still have even expand faintly. Light qualitative silica brick uses crystallization quartzite to be raw material commonly, combustible substance is added in batch, wait like coke, anthracitic, sawdust, or form poriferous structure with aeriform foaming. 2, diatomite brick: Diatomite brick and photograph of brick of other light qualitative heat preservation are compared, thermal conductance is small. Its use temperature to follow purity and change. It is commonly under 1100 ℃ , be out of shape because of the systole of the goods when high temperature bigger. When using pure diatomite raw material, need firing below higher temperature, 2 oxidation silicon is changed into scale quartz, also can join lime to serve as bond and mineralizer, promote firing when of scale quartz change, the heat-resisting function that is helpful for improving product and those who reduce high temperature to fall is strong burn systole. 3, brick of argillaceous heat preservation. It is the adiabatic and refractory products that is 30%~48% with the Al2O3 content that fireproof clay controls for main raw material. Its produce craft to use burn oneself out to add content law and bubble way. The use of light qualitative sticky earthy and adiabatic brick is extensive, melt is not contacted in basically be being used at all sorts of industrial kiln furnace content and without the thermal insulation that erodes other action fireproof material, use temperature is 1200~1400 ℃ . 4, brick of alumina heat insolation. Products is refractory performance of degree of shake of tall, heat-resisting is good, often use as the high temperature thermal insulation of kiln furnace. Use temperature is 1350~1500 ℃ , high pure the use temperature of goods can achieve 1650~1800 ℃ . Basically be the adiabatic and fireproof product that raw material makes with alumina of electric frit corundum, agglomeration and industrial alumina. 5, light qualitative Molaishi brick. The adiabatic and fireproof product that makes for main raw material with Molaishi. Brick of Mo Laishi qualitative heat insolation high temperature resistant, intensity tall, thermal conductance is low, can contact blaze directly, apply to the liner of all sorts of industrial kiln furnace. 6, alumina is hollow ball brick. Hollow ball brick basically uses alumina at 1800 ℃ are used for long below. The chemical stability with also be had better below high temperature and be able to bear or endure erode performance. Hollow ball brick and photograph of brick of other light qualitative heat preservation compare alumina, safe use temperature is high, strength is great, thermal conductance is small. Bulk density also compares the compact product low 50%~60% that is the same as composition, can bear the concussion of high temperature blaze. The main body function of the furnace of kiln of general principle industry that chooses the fireproof insulation material such as heat preservation brick basically is decided by the technical economic performance of fireproof material, the investment cost that affecting kiln furnace directly, character of service, thermal efficiency, the sources of energy that run uses up charge to wait. Choose the general principle of the fireproof insulation material such as heat preservation brick: 1, the function of kiln furnace and hot project characteristic. The kiln furnace that works like clearance sex should choose the material with small thermal capacity. 2, intensity of system of the safe use temperature of material, heat conduction, high temperature, chemical stability. 3, use life. 4, investment expenses upholds charge with what move. Generally speaking, the fireproof material that pledges again emphasizes particularly on quite some specifications index, if the; such as high temperature stability, chemical stability is able to bear or endure,light qualitative insulation material pays attention to investment and the integrated technology economic norms that move more. When choosing brick of light qualitative heat preservation, the expenses that is the coefficient of thermal conductivity that uses insulation material and insulation material of every unit volume commonly will decide, product value heals small had healed. Value of coefficient of thermal conductivity is little, the adiabatic result that shows insulation material is good, the fare of the sources of energy when moving is low. The fare of investment of charge low specification of insulation material of every unit volume is low, have good investment economy effect. Can use coordinate diagram method constructive alternative, the abscissa is working temperature, ordinate is good indigestion, the intercept of safe use temperature that uses data the curve of each material, choose the stuff with technical good economic performance. Project of heat preservation of method of construction of brick of kiln furnace heat preservation is a painstaking work, each link should let achieve quality to ask to pay attention to essence of life strictly to be checked construction, frequently in construction process. According to my construction experience, I reach kiln to carry heat preservation job on the head to talk about concerned construction method in kiln wall below, draw lessons from in order to offer everybody. 1, build by laying bricks or stones of heat preservation brick is built. The height of heat preservation wall, ply and overall length accord with the regulation of blueprint paper. Its build by laying bricks or stones builds method and clay qualitative firebrick is identical, use fireproof slop build by laying bricks or stones to build. System of build by laying bricks or stones should make sure grey full oar is solid, its plaster is full degree should achieve 95% above. Forbidden use hammer knocks a brick when bricklaying, the face that uses rubber hammer light clap to hit a brick looks for his. Forbidden the knife that use ash chops a brick directly, the cut of applied cut machine that needs treatment is orderly. To avoid heat preservation brick direct with bright fire is contacted inside kiln, of observation hole all around build by laying bricks or stones builds usable firebrick, heat preservation wall and heat preservation cotton and outside of the wall build receive a brick to also apply clay to pledge firebrick build by laying bricks or stones is built. 2, shop of heat preservation cotton is stuck. Heat preservation cotton board the requirement that orders goods dimension wants to accord with a design already, want to satisfy the real need of convenient installation again. The attention answers in installing a process: The contact is close together between cotton board, narrow as far as possible its connect clearance, be in place of cotton board connect, good with adhesion of high temperature binder, make its sealed tight, ensure effect of its heat preservation. Zhengzhou flourish fills kiln furnace fireproof data limited company, advocate the furnace of high temperature kiln such as battalion electric power, metallurgy reachs indeterminate form to be able to bear or endure with boarding material, the product has: Brick of argillaceous brick, tall aluminous brick, corundum brick, silica brick, Mo Laishi brick, light qualitative heat preservation, excel in wear-resisting is wear-resisting of fiber of fireproof, low cement, steel, light carborundum of series of qualitative heat preservation, Mo Laishi is fireproof and pouring wear-resisting of makings, corundum.
Get Price
WhatsApp