1 firebrick material is qualitative element
From collapse falling corundum not comes in light of Shi Dazhuan attachment, the surface of big brick is fireproof daub falls off completely, the big brick that shows working layer and of intermediate layer pledge gently fireproof and pouring the fireproof puddle between makings and brick and brick adheres to each other force is poorer. Because scale of firebrick treatment union is too smooth, and fireproof and pouring makings surface is pounded dozen press light, make two kinds of material qualitative be together via high temperature fusion hard, run generation break for long, acidity gas enters liner interior, fall to form high temperature vulcanization to corrode to anchorage solid hammer in high temperature condition, the ability propping up that solid of anchor of if things go on like this nails is abate, this is to create working layer fireproof one of reasons that big brick falls off. Moreover, fireproof layer is pouring expecting is wet makings, in drying-out pouring makings dehydrate contractive, because anchorage solid hammer and fireproof material heat bilge,coefficient differs, cause stress to distributing inhomogenous, drying-out and fireproof layer liner appears after use period of time crackle, still have perforative sex flaw even, acidity gas passes crackle to be caused to casing of anchorage solid hammer, steel corrode, because the liner of this kind of structure is easy,fall off.
Factor of 2 construction quality
In collapse fall the spot discovers the brick is seamed amount to 1 ~ 1.6mm, individual brick is seamed exceed 2mm even, the ash of every annulus brick and brick is seamed amount to more than 30. After classics high temperature, fireproof puddle is contractive, firebrick of the semicircle below the furnace that make sulfur sinks below gravitational action, issue decrescent of semicircle bricklaying aperture, squeeze together, systole of body of together with brick causes coping to appear great contractive flaw, cause blaze change to enter pouring liner material collapse is caused inside makings.
3 designs element
The upper part outside furnace wall has radian to be 270° or the metal of 180° is overspread, the purpose is to protect crust fireproof material escapes be affected by the heat fragile cracked influence, lengthen combustion furnace service life. The cover that prevent rain and crust of body of heater leave the gap with have certain, basically be to offer space of an adiabatic air to let air amid flow, layer of this one adiabatic air stabilized the temperature of crust surface, prevent crust to cause acerbity condensation and interior because of super-cooling to corrode. Because intake was not designed before this, cause high temperature of cylindrical shell coping to spend the above that amount to ℃ , mural temperature exceeds cylindrical shell to design temperature outside. Mural temperature lifts the temperature between the layer of fireproof liner inside meeting influence furnace lifts outside, cause adiabatic liner be heated fragile crack an influence and produce contractive crackle. Crackle of acidity gas classics corrodes adiabatic liner and anchorage solid hammer further, cause adiabatic liner to sink, increased coping to igneous face corundum the high temperature of Mo Laishi brick bearings bear, destroyed the bulk stability of Mo Laishi big brick, cause corundum of Xiang Huo face then of Mo Laishi brick rupture and cause a collapse.
Element of 4 liner structure
Because liner design has two the layer is pouring makings, ply is thicker, liner of extremely easy generation expands when drying-out and cause local appearance bosomy a bag. As a result of pouring expect in corundum at the back of Mo Laishi brick, drying-out hind also discovers hard in check out procedure, this buries next hidden trouble possibly also to liner structure.
High temperature of 5 cylindrical shell expands element
Temperature of the wall outside cylindrical shell expands higher the amount is larger, deflection is bigger, inner lining susceptive pulls stress bigger. Liner material belongs to brittleness material, temperature is higher, tensile strength is lower. Should pull when stress is greater, cause liner likely also especially corundum of Xiang Huo face of Mo Laishi brick rupture, cause then collapse fall, create vicious circle, high temperature place falls off more apparent more serious also.
6 operations element
Gas of acidity of start working initial stage will measure wave motion, cause furnace temperature to be not stabilized, the furnace temperature when producing an accident is in 1340 ~ between 1390 ℃ , wave motion is bigger, form very strong thermal shock, and acidity gas constituent all is had very strong caustic. Moreover, the high speed after the mouth of the fire that heat ammonia with a large number of acidity gas and wind special classics mixes is ejective, bigger to action of corrode of awl Duan Chong. Additional, furnace way is older, the interaction force between firebrick is lesser, taller to construction quality requirement.
Annals of fireproof data limited company is in furnace of kiln of Zhengzhou Rong Cheng industrial dedicate oneself to the service of one's motherland, industry of service high temperature is oneself, we bear tens of year the technology is accumulated, active and before look up ground is high temperature industry will make tomorrow make brand-newly, become hard " boiler and expert of liner of furnace of hot project kiln " .