Light qualitative silica brick and light qualitative diatomite is the brick same?

Light qualitative silica brick and the product that pledge diatomite brick is two kinds differ gently, raw material and surface color, different.

Light qualitative silica brick
Light qualitative silica brick calls silicon qualitative adiabatic brick again. 2 oxidation silicon is in 91% above, bulk density is in the light simple fireproof stuff under 1.2g/cm3. Use finely silica to make raw material, its are critical granuality does not exceed 1mm normally, and the grain that is less than 0.5mm among them not less than 90% . Combustible substance is added in burden or use aeriform happening law to form poriferous structure, classics is firing and make. Also can make do not burn goods. 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. Basically be used at requirement heat insolation or reduce self-prossessed and as not direct as melt content contact, do not get the aggressivity gas action, kiln heat that does not suffer temperature leap each place. Use below high temperature, cannot contact with alkalescent and fireproof material. Differ character by material, its are tall use temperature is in 1550 ℃ of 1200 ～ .

Light qualitative diatomite brick
It is the light qualitative brick that raw material makes with diatomite of natural and poriferous shape. Natural diatomite is alga what form after organic material is corrupt is loose and poriferous mineral, bases is 2: Oxidation silicon (95 ％ of 73 ％ ～ ) , have good and adiabatic property. A few union clay and combustible are joined in diatomite, classics embellish is wet mix. Shape and firing, make different appearance products. Cent of complex miscellaneous degree is case appearance mark, general, different and special model, by bulk density cent is 6 kinds. Bulk density limits: 1 ／ of 0.4 ～ Cm3, coefficient of thermal conductivity is 300 ℃ M·K of ／ of 0.13 ～ 0.21w, intensity of normal temperature compression 0.6 ～ 2.5MPa, fireproof temperature amounts to 1280 ℃ , high use temperature 1000 ℃ of 900 ～ . Use as the heat insolation of facilities of industrial kiln furnace, hot project and conduit, insulation material. Brick of diatomite heat insolation is raw ore is cut by the appearance of firebrick, be in 800, below the temperature of 850 ℃ firing, or the person is added in diatomite a few but model clay and curium wood chip mixes practice, shape and firing, can produce a brick of diatomite heat insolation. But want to produce low density;(0.4, 0.5g/cm3) firebrick, the diatomite that should use high grade (SiO2 96%~97%) of SiO2>80%; pure diatomite. Have the medium that make hole even. Because use natural diatomite directly,manufacturing firebrick achieves low density hard. The method making hole that uses generally is as follows: (1) bleb law, blowing agent is added in burden namely, the bulk density of average production is 0.4, O.5g/cm3 firebrick, multi-purpose this law. (Kong Cai of man-made of 2) mix into expects, if curium small pink of wood chip or polystyrene. Add curium wood chip law is compared general, general sieve goes > of 3mm curium wood chip. Curium the affiliation of wood chip measures by undertake estimation below: Curium suppose 250kg/m3 of wood chip unit weight, solid Mu Rong weighs 750kg/m3, curium real wood content is 250/750=33.3% in wood chip namely. What use 1200kg/m3 of the unit weight after diatomite is burned directly suppose again, when the firebrick that is about to make 600kg/m3, need to make hole (1.2, 0.6)/1.2=50% . Produce 1 M3 firebrick apparently, need diatomite (dry basis) 600Kg, curium wood chip is 750*50%=375kg. If the plasticity of diatomite is insufficient, want to add combinative clay, wet those who curium wood chip wants to have 100d is stale period. Still have join float bead the unit weight that controls firebrick, make the use temperature of firebrick raises 1000 ℃ . (3) mix into is entered with light simple stuff, if expand pearlite, float bead etc. Fireproof material occurrence craze, fall off, easy how to wear away to do? Want to solve a problem thoroughly, need to be dug from germ, the analysis gives real reason, flourish Cheng Naicai is engaged in be able to bear or endure service of timber production, research and development is old, can solve all sorts of difficulty problems of liner of furnace of high temperature kiln, welcome broad new old friend to seek advice reach technical communication.