The material of brick drifting steel has clay to pledge character, tall aluminium is qualitative, mo Laishi is qualitative wait, give priority to earthily in order to stick commonly, but rise increasingly as what rolled steel quality asks, pure to rolled steel degree raised taller requirement, present brick drifting steel of all sorts of material have.
Brick drifting steel resists below high temperature condition all sorts of aggressivity material are like solid stock, furnace gas, slaggy or the ability of the chemistry that wait calls solution of firebrick fight chemical aggressivity. Chemistry is eroded is one of the mainest factors that bring about firebrick high temperature to mar, mechanism of its corrode caustic also very complex, include commonly: Erode or grind sassafras, permeate, diffuse, the physics such as fusible, chemical reaction and chemical reaction.
Brick drifting steel is build by laying bricks or stones the hollow firebrick that brick of steel of reduction of fractions to a common denominator and steel ingot mould connect inside the groove that uses motherboard in ingot casting, it is the cuboid look that has a variety of norms commonly hollow clay brick, firebrick basically is used at smelting furnace of build by laying bricks or stones, can use as building kiln furnace and material of all sorts of high temperature housing materials that heat up labor facilities and construction, can experience all sorts of physico-chemical change and mechanical effect below high temperature.
The demand that uses midstream steel brick actually is a few higher, because it needs to be contacted with molten steel of high temperature melt directly, it is tall aluminium commonly pledge with corundum character, its are consequently fireproof degree taller also, general not under 1580 ℃ , use temperature actually to be able to achieve 1630 ℃ above sometimes, and although firebrick sort is much, from cheap to high-grade and general have silicon half silicon is qualitative, qualitative, still tall aluminium pledges, but its high temperature resistant function is inferior to shedding steel brick.
Influence firebrick defies the main factor of chemical aggressivity
(1) chemical composition and property. General requirement: The purity of fireproof material should composition of tall, impurity should the little, content that should control harmful part strictly especially: The chemical reactivity between firebrick and eater is inferior, have identical (or close) acidity or alkalescent
(2) mineral composition and fibre structure. When content of appearance of the crystallization in material taller, matrix crystallizes mediumly appearance content the crystal and mineral melting point in taller, matrix is higher, photograph of fluid of more, high temperature estimates the amount little, viscosity is big and when assuming dispersive position, often show fight chemical aggressivity goodly.
(3) air hole and porosity. Apparent pore is eater permeates the shortcut that enters material interior, can increase the interface between eater and material to accumulate significantly. Lead like material apparent pore inferior, and bore diameter is namely petty, often can prevent the osmosis of eater effectively, be helpful for enhancing its chemistry aggressivity thereby.
(4) the viscosity of eater. When gaseous or the viscosity of liquid state eater is lesser, the osculatory Chengdu of its and firebrick surface will rise apparently, lap even material, make eater qualitative be permeated to material interior easily and diffuse. When eater viscosity is bigger, its are permeated, diffuse effect is not distinct, return meeting organization to be permeated further to material interior sometimes, diffuse. The viscosity of eater basically is comprised with its chemistry and temperature is concerned
(5) temperature. When temperature is higher, will make firebrick fights chemical aggressivity to reduce. On the project, often take proper cooling step to lining, main purpose depends on dropping temperature, defer, the corrode damage that prevents lining.
(6) atmosphere. Of certain firebrick fight chemical aggressivity very sensitive to atmosphere. If be in reducing atmosphere, firebrick of siliceous aluminium department is slaggy to containing ferric oxide erodent repellency is reduced apparently.
Brick drifting steel basically applies at all sorts of steel to plant (include stainless steel, each alloy steel) flat irrigates steel. The product is had fireproof degree tall, be able to bear or endure burst apart the gender is good reach fight aggressivity strong. Exterior is neat, drip smooth, dimension accurate, breed is all ready. The steel package that produces the cast steel inside steel bag is line brick, arc line brick, firing with do not burn brick of mouth of brick of head of a place of strategic importance, casting, brick and sleeve brick. High grade raw material, distinctive technology makes the product has good high temperature reason to turn performance, be able to bear or endure erode, changeless form, do not fall off.
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