What is adiabatic firebrick?
Understand first from the definition of the name, density small, weight the refractory products with lighter, small coefficient of thermal conductivity, use as adiabatic heat preservation. For example: Brick of argillaceous heat preservation, tall aluminium gets together brick of light brick, Mo Laishi heat preservation, bleach bead brick, alumina hollow ball brick belongs to goods of light qualitative firebrick etc.
Loss of accumulation of heat of body of build by laying bricks or stones of industrial kiln furnace and heat loss due to radiation of surface of body of heater, the 24 ～ that take specific fuel consumption about commonly 45% . With thermal conductance the light qualitative brick with low, small thermal capacity makes material of construction of body of heater, can save specific fuel consumption; In the meantime, because kiln furnace can rise gentle refrigeration quickly, can raise equipment to manufacture efficiency; Still can reduce weight of body of heater, simplify kiln furnace is tectonic, improve product quality, drop environmental temperature, improve labor condition.
Adiabatic firebrick defines:
Show density is less than 1.3 × commonly the firebrick of 103Kg/m3. Pledge gently, the quality that points out this kind of firebrick namely is light.
Adiabatic firebrick has the following characteristic
1, density is small, weight is light, can reduce weight of body of heater to simplify kiln furnace is tectonic;
2, porosity is tall, heat conduction rate is minor, heat preservation sex is good, can save specific fuel consumption, raise equipment to manufacture efficiency;
3, mechanical intensity is low, cannot use at bearinging structure;
4, wearability is poor, unfavorable use at be being contacted with charging, wear away serious place;
5, porosity is bigger, cannot use at direct contact slaggy with place of liquid state metal.
Light heat preservation of weight of light qualitative firebrick is adiabatic, but not tall wearability needs strength, cannot contact high temperature blaze; In weight of heavy qualitative firebrick, heat preservation lies between heat energy force to differ, but intensity tall wearability is big, high temperature resistant. When build by laying bricks or stones builds high temperature facility, can join real case according to demand, will light qualitative firebrick and heavy qualitative firebrick according to design program, union rises use, will achieve favorable result, meeting hoist service life and use efficiency.
Silicon pledges adiabatic firebrick is SiO2 content 90% above, bulk density is less than the adiabatic silicon of 1.2 qualitative refractory products, firebrick of silicon qualitative heat insolation uses crystallization quartzite commonly or silicon is arenaceous for raw material, person tinderbox is added to pledge in burden, like coke, anthracitic, sawdust, char rice husk or form poriferous structure with aeriform foaming. Fireproof spend and loading bate temperature and the common silica brick that are the same as into split phase differ not quite. But because air hole is very much, the reason compression intensity, sex that fight broken bits, corrosion resistance be inferior to common silica brick, and heatproof shake function rises somewhat however.
Utility of firebrick of silicon qualitative heat insolation
Silicon pledges adiabatic firebrick pledges silica brick can divide gently commonly, 19 class: One class is tasted can use at the place such as roof of steel rolling heating furnace and roof of furnace of silicate industry kiln, can contact with blaze directly; Seconds is used at the heat insolation of furnace of general industry kiln.
The thermal insulation that silicon pledges adiabatic firebrick basically is used at heating up labor facilities and working layer, can use at falling with condition of slaggy contact high temperature (1500 ℃ ) the thermal insulation of equipment of all sorts of furnace of high temperature kiln. The heat insolation of the heat-insulating material of the liner of silica brick of high temperature hot-blast stove that Zhengzhou Rong Chenggui pledges adiabatic firebrick applies to large blast furnace and body of build by laying bricks or stones of vitreous kiln silica brick.
Silicon pledges the mineral composition of adiabatic firebrick is: Phosphorous quartz 78% ～ 86% , fang Shiying 13% ～ 15% , quartz 4% ～ 7% . Bulk density is 0. 9 ～ 1. 2 G/cm3, compression intensity 2. 0 ～ 5. 9MPa, thermal conductance is 0. 35 ～ 0. 42W(K) .
The silicon that Henan flourish fills fireproof material manufacturer to produce pledges adiabatic firebrick has heat conduction rate is low, loading bate temperature is high, remains expands minim, performance of the heavy change that burn a line is good wait for character, apply to the industrial furnace such as kiln of frit of Jiao Lu, hot-blast stove, glass and furnace of charcoal element forge.
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