The end that we use heat preservation brick in kiln furnace construction is for heat insolation, body of this kind of brick also calls light qualitative brick. With what this answers relatively still one is plant is heavy qualitative brick, they are for build by laying bricks or stones the furnace that construct pit is used, belong to firebrick series product.
Brick of light qualitative heat preservation also has many sort, the tall aluminium that gives priority to brilliant photograph with Molaishi among them pledges we weigh fireproof material pledge gently for Molaishi heat preservation brick. General alumina content is in 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.
Mo Laishi pledges heat preservation brick can be used at liner of furnace of high temperature kiln directly gently, use extensively already at the liner of shuttle type kiln, roller path kiln, glass and petro-chemical kiln furnace at present.
Mo Laishi pledges manage of heat preservation brick changes target gently:
Brick of Mo Laishi heat preservation because its chemistry structure, have so following 6 character:
1, rate of low heat conduction, have effect of very good adiabatic heat preservation;
2, low hot frit, because low heat conduction is led, mo Laishi series pledges gently the heat energy with adiabatic brick very few save up, energy-saving in intermittent operation effect is apparent;
3, matter content is low have the oxide content such as alkali metal of low-down iron box, accordingly, fireproof degree tall; The higher volume that contain aluminium makes its still maintain good performance below reducing atmosphere;
4, intensity of hot condition compression is high;
5, exterior dimension essence is accurate, accelerate build by laying bricks or stones to build career, reduce fireproof mud to use an amount, assured the intensity of body of build by laying bricks or stones and stability, prolong the life of liner thereby;
6, can process special form, seam in order to reduce number of brick of build by laying bricks or stones and build by laying bricks or stones.
These character of brick of because Molaishi is light qualitative heat preservation, what our OK and very good observation gives it is fireproof degree taller, can amount to 1790 ℃ above. Loading bate begins ～ of temperature 1600 1700 ℃ . Intensity of normal temperature compression 70 ～ 260MPa. Heatproof shake sex is good.
Mo Laishi pledges heat preservation brick manufactures technology according to its gently, have agglomeration at present Mo Laishi brick and electric frit Mo Laishi brick two kinds:
1, agglomeration Mo Laishi brick is main raw material with tall aluminous aluminous grog, join a few clay or unripe alumina to make bond, via shaping, firing and make.
2, electric frit Mo Laishi brick is raw material with alumina of tall alumina, industry and fireproof clay, join charcoal or coke granule to make reducer, law of reductive report frit is used to make after shaping.
These two kinds of means make brick of heat preservation of made-up Mo Laishi, the crystallization of electric frit Mo Laishi is bigger than agglomeration Mo Laishi, heatproof shake sex is better than agglomeration goods. Their high temperature capability basically depends on the uniformity that the content of alumina and glass of Mo Laishi get along with distributing. Basically use at lining of blind angle of system of splitting decomposition of kiln of agglomeration of regenerator of kiln of frit of shaft of hot-blast stove roof, blast furnace and hearth, glass, pottery and porcelain, oil to wait.
Accordingly, we are choosing Molaishi brick of light qualitative heat preservation when same need considers agglomeration Mo Laishi brick and electric frit Mo Laishi the sexual price of these two kinds of Mo Laishi bricks compares the brick, use brick of Mo Laishi heat preservation according to particular kiln furnace case.
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