Light qualitative silica brick is a kind of insulation material, can use at heat preservation thermal insulation, the characteristic is heat insolation, heat preservation, acid-proof function good, light qualitative silica brick is the light simple stuff with good effect of a kind of heat preservation.
What is light qualitative silica brick? Call 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. 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.
Light qualitative silica brick produces craft to 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. 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 use temperature to be in 1550 ℃ of 1200 ～ .
Product recipe gives priority to raw material with silica, advocate raw material silica is fine pink of meal of end of silica grain, silica, silica and silica by bead diameter cent, what narrate light qualitative silica brick to be by composition of per cent of the following weight: 5-15% of Xi of 14-18% of fine pink of 10-20% of meal of 20-40% of end of silica grain 15-30% , silica, silica, silica, black lead, compound mineralizer 1. 5-2. 5% , bond 2-5% and carbolic element 1. 5-3% .
The advantage of light qualitative silica brick this product is to pledge argillaceous brick cannot is likened to gently. 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 amounts to 1620 one 1640 ℃ , and brick of light qualitative clay has 1200 only, 1300 ℃ , do not contract below high temperature. Expand instead at 1450 ℃ (0.2%) agreement ＜ , volume is steady, and clay pledges the brick contracts gently big, make lining annihilate is cracked easily. By a lot of concrete example prooves, light qualitative silica brick is OK the furnace kiln that works below 1550~1600 ℃ temperature is used for a long time; 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 ％ . In firing kiln (kiln pouring blaze) kiln top uses light qualitative silica brick, can prolong the service life of roof.
Suitable scope pledges silica brick is by utility cent gently one, 2 class. One class is tasted use at steel rolling heating furnace roof and firebrick industry are burned or kiln kiln supports etc, can contact with blaze directly, seconds is used at industry to heat up the partition of labor facilities.
Get Price
WhatsApp