Heat-insulating material of fireproof heat preservation

Heat-insulating material of fireproof heat preservation, just as its name implies, it is to solve kiln furnace heat loss due to radiation, the sources of energy of managing heating power, reduce structural weight and produce. We let simple know this kind of fireproof stuff below, make clear its use direction.
Heat-insulating material of fireproof heat preservation has a lot of apparent feature, convenient we discern. Porosity is for instance tall, it is 40% ～ commonly 85% ; Bulk density is low, general under 1.5g/cm3; Thermal conductance is low, general under 1.0W (M · K) .


The porosity of adiabatic and refractory products is general not under 45% . Its sort has a lot of, its classify a method to basically have the following kinds:
1, by use temperature cent is microtherm heat insolation fireproof material (use temperature is 600 ～ 900 ° C) , in lukewarm adiabatic and fireproof material (use temperature is 900 ～ 1200 ° C) with high temperature heat insolation fireproof material (use temperature is more than 1200 ° C) ;
2, by bulk density cent is average light qualitative fireproof data (bulk density is 0.4 ～ 1.0g/cm3) and exceed low light simple fireproof stuff (bulk density under 0.4g/cm3) ;
3, by raw material cent is clay qualitative, silicon mixes qualitative, tall aluminium character magnesium is qualitative wait for adiabatic and fireproof material;
4, join law, bubble law, chemical law and porous material standard to wait for adiabatic and fireproof material to be lighted by production methods cent;
5, by product figure cent is boarding heat insolation refractory products and indeterminate form heat insolation are fireproof goods.


The technology of the making craft of heat-insulating material of fireproof heat preservation and compact and fireproof product differs somewhat, had put forward above main method, have light add content law, bubble law, chemical law and porous material way:
1, light add content way. This law is to will curium wood chip can light may sublimate accretion is put into pug, mix equably, use crowded base law, half dry method or slop next pouring the law shapes, dry hind firing. Can light may sublimate accretion is in firing the burn-up in the process, leave empty hole, make adiabatic and fireproof product.
2, bubble law. This law is water agitate is added in putting foaming agent the machine that hit bubble and make petty even bubble, in joining bubble slop again, collective agitate becomes bubble slop, infuse model, along with model together dry, drawing of patterns, in ～ of 1320 ° C 1380 ° C (adiabatic to tall aluminium firebrick) below firing, become product namely through machining plastic.
3, chemical law. It is the method that reaction of chemically of the benefit in making bricky technology produces gas and acquires a kind of perforated brick semifinished product. The chemical response that uses normally if carbonate and powder of acerbity, metal add acerbity, causticity alkaline wait with aluminium powder. The chemical response that can use is slower and can control, suffer bubble of mechanical trouble take offense to disappear all right namely when bend infuse model otherwise. If reaction is too sharp, if cross oxidation hydrogen and manganese dioxide,can join depressor. The reactant that sends angry bubble in the interfuse in slop of fine pink raw material acquires stable bubble mud, infuse model, dry hind firing. This legal system builds pure oxide heat insolation refractory products, its porosity can achieve 55% ～ 75% .
4, porous material standard. This law is to use expand pearlite, expand the natural light qualitative raw material such as vermiculite and diatomite, all sorts of hollow balls that pass prefabricate are raw material, add certain bond, through mixing, shape, dry, and firing wait for working procedure and make adiabatic and fireproof product.


This kind of fireproof material regards industrial kiln as the heat-insulating material of furnace, can reduce furnace kiln heat loss due to radiation, save the sources of energy, can reduce the weight of hot project facilities.
But change a structure as a result of the manage of adiabatic and fireproof material, sex of caustic of the mechanical strength that caused it, wear-resisting and the aggressivity that fight broken bits is poorer, unfavorable be used at furnace kiln bearing structure and direct contact the place such as metal of slaggy, charging, melt.
Accordingly, we should link specific kiln furnace type in select material of kiln furnace construction, kiln furnace place, will choose heat-insulating material of fireproof heat preservation. Produce the advantage of heat-insulating material of fireproof heat preservation, also prevent its insufficient place at the same time.