How is gas firebox chosen with brick of 1450 degrees of heat preservation?

How is gas firebox chosen with brick of 1450 degrees of heat preservation? Can choose according to temperature: Brick of brick of heat preservation of light qualitative silica brick, light qualitative Mo Laishi, light qualitative corundum.

Gas firebox is the plant that fuel amid combustion builds high temperature to burn gas, liner has fireproof material to build by laying bricks or stones is built and be become, include brick of firebrick, heat preservation to wait, want to choose fireproof material according to the working characteristic of equipment, light qualitative silica brick fits acidity environment, but want strict control to warm up speed, surface of light qualitative tall aluminous brick can contact blaze, but cannot exorbitant, if be often intermittent type runs, the Molaishi with should choose heatproof shock effect good is qualitative product. Long-term movement can choose light qualitative corundum Mo Laishi brick, products of Mo Laishi of light qualitative corundum is refractory intensity of degree of tall, compression is function of tall, wear-resisting, heatproof shock effect is good. 1, light qualitative silica brick pledges the advantage of silica brick has a lot of gently. Brick of light qualitative clay cannot is likened to. Porosity makes an appointment with the light qualitative silica brick of 50% , rate of its heat conduction is minorrer than brick of light qualitative clay. The loading of light qualitative silica brick is out of shape temperature is high, do not contract below high temperature. By a lot of concrete example prooves, light qualitative silica brick can issue furnace kiln of the job to be used for a long time in 1400~1560 temperature; And but the hot side that immediate step enrages at contacting furnace, also can use at the roof of big span; In the high temperature that cannot use brick of light qualitative clay the place can use light qualitative silica brick. Light qualitative silica brick is used in heating furnace lining, with use brick of light qualitative clay to compare, can shorten heat period, reduce the amount of specific fuel consumption of 35 ％ . 2, Mo Laishi of brick of heat preservation of light qualitative Mo Laishi pledges heat preservation brick is the adiabatic and fireproof product that makes for main raw material with Molaishi gently. Mo Laishi pledges gently heat preservation brick high temperature resistant, intensity tall, thermal conductance is low, can contact blaze directly, apply to the liner of all sorts of industrial furnace kiln. General alumina content is in this product 65% ～ 75% between. Mineral composition divides Molaishi outside, contain alumina among them inferior person still contain a few glass photographs and Fang Shiying; Contain alumina taller person still contain a few corundum. Gas firebox can choose JM-28(to use temperature with brick of 1450 degrees of heat preservation 1540 degrees) / JM-30 (use temperature is 1650 degrees) . 3, brick of light qualitative corundum. Light qualitative corundum is fireproof material, as a result of its production methods and the accretion that introduce differ, al2O3 content has certain difference, the firebrick of general light qualitative corundum that law, bubble law and aerification law make the firm accretion that burn ashes, al2O3 is contained dizzy do not exceed 99 ％ commonly, turn with what hollow ball makes corundum content of Al2O3 of just corundum brick is high. Raw material pledges in silicon of liner grind the mill inside machine, because SiO2 of main Yu Zhiwei pledges gently agglomeration accretion TiO2 is joined in the firm big grog of corundum brick partly, the content such as the Fe2O3 that other foreign matter reachs the accretion that burn ashes to enter by raw material, Na2O, CaO, MgO is not big, pouring the brick of light qualitative corundum that law and aerification legal system make, gas firebox can choose with brick of 1450 degrees of heat preservation 1500 model brick of light qualitative corundum. How to choose with brick of 1450 degrees of heat preservation about gas firebox, flourish Cheng Naicai introduces this for everybody, hope to be helped somewhat to everybody, if have other question, the welcome seeks advice.