Can Mo Laishi brick contact water? Can be after be being immersed by water, you still used?

Mo Laishi brick bases is alumina, main brilliant photograph is Mo Laishi photograph in the product, this product is as won't chemical as water happening reaction, but also do not suggest to contact water or be immersed by water, lest the influence is used.


Mo Laishi firebrick is a kind of fireproof material, basically make by Molaishi. With synthesis Mo Laishi grog regards grain as material, fine pink is grog of synthetic Mo Laishi, or with Bai Gangyu. . Pink and pure clay mix quartz to mix fine pink into what be equivalent to Molaishi. Grain makings and fine pink cooperate in proportion, is commonly used scale: ? Handkerchief A?5%~55% , fine pink (0).088mm)55%~45% . Mix even hind, high pressure shapes. Fire temperature is 1550~1600 ℃ . When into Molaishi in use report fusion clinker serves as grain to expect, its fire temperature should be more than 17000 ℃ .
Burden can decide according to use condition. Al2O3 content depends on current and commonly used burden method: ① synthesizes Molaishi (agglomeration or electric frit) for aggregate + synthesize Mo Laishi fine pink; ② aggregate is synthetic Mo Laishi (agglomeration or electric frit) + synthesize Mo Laishi fine pink + Al2O3 fine pink + pink of tall purity clay; The synthetic Mo Laishi that ③ is aggregate with electric frit white corundum (agglomeration or electric frit) + synthesize Mo Laishi fine pink + Al2O3 fine pink + tall purity clay is pulverous. Deserve to compare according to granuality " both sides is big. Among small " the principle of burden gets ready. Use waste liquid of sulphurous acid pulp or aggregate chloridize aluminium or get together more phosphate serves as bond, mix even hind high pressure shapes, in the fire inside high temperature kiln, according to the temperature fire of firebrick. Al2O3 content depends on 1600~1700. Between ℃ .
Fe2O3 is right one SiO2 of A12O3 of systematic material only then frit temperature and systematic A12O content 3 or concern with ratio of A12O3 ／ SiO2, when ＜ of ratio of A12O3 ／ SiO2 2.55 when, only then frit temperature is 1380. ℃ , be like ＞ of ratio of A12O3 ／ SiO2 2. Only then frit temperature is in 55 when rise 1460. ℃ , and therewith A12O3 content increases, step up. Restore atmosphere, dissolve after Fe2O3 is reductive enter vitreous phase, make initiative and fused temperature of the system drops 1240. ℃ and 1380 ℃ .
The brick contains the influence Mo Laishi of the impurity in Mo Laishi brick normally TiO2.Fe2O3.CaO.MgO.K2O and Na2O and photograph of artificial synthesis raw material are compared, the Mo Laishi matter content that natural raw material produces is higher. These foreign matter oxide have fused effect in Molaishi, the formation that reduces melt temperature and viscosity, increase the generation amount of fluid photograph, raise melt to be opposite the deliquescent speed of solid photograph and deliquescent quantity. However, the action intensity of different impurity oxide is different, among them photograph of fluid of influence of ground of big limit of K2O and Na2O forms temperature, k2O and Na2O nod his temperature to reduce 513~724 ℃ respectively without variable, also rose to disclose Molaishi's intention at the same time. In oxide of this kind of impurity, tiO2 impact is little, make nod temperature to reduce 101~107 without variable only. ℃ . Become when TiO when content is inferior, finite solid solution is fashioned in Molaishi besides dissolve of a few solid, of stimulative Molaishi make He Jing system outside growing, still a few enter fluid photograph to form vitreous body below high temperature. The Fe2O below high temperature 3 it is the solid dissolve sex with have certain in Molaishi and corundum, fashion finite solid solution. The Molaishi in corundum of prep above of sex of its solid dissolve, as a result of the formation of solid solution, make Molaishi and the crystal lattice of corundum grow. Fe2O3 is right one SiO2 of Al2O3 the material in the system only then the influence Al2O content of frit temperature 3 or concern with ratio of Al2O3 ／ SiO2, when Al2O3 ／ SiO2, only then frit temperature is 1380. ℃ , when Al2O3 ／ SiO2>2.55, only then frit temperature rises 1460. ℃ , and therewith A12O3 increases as the addition of content gradually. When restoring atmosphere, fe2O3 by reductive into FeO and glass identical is, tuo Rong enters vitreous phase, make of the system only then frit temperature drops to be mixed to 1240 ℃ 1380 ℃ . Altogether, in Mo Laishi brick, al2O raises content, improve high temperature capability; Increase frit dosage, reduce high temperature capability. So, the content of foreign matter oxide wants to be controlled strictly, especially K2O.Na2O and Fe2O3 content, it is to obtain high-powered Molaishi important step of the brick. Be used at containing alkaline part slaggy or gas atmosphere is medium, to not coming the brick all has stone to erode action badly.
Pledge Mo Laishi brick pledges gently gently quality of Mo Laishi brick is light, heat preservation effect is good. It is heat preservation of a kind of tall purity fireproof material. According to product demand, add organic and compound filler, via vacuum extrusion, high temperature agglomeration synthesizes goods of light qualitative Mo Laishi. According to different specifications, bricky alumina content is in the light qualitative Molaishi that flourish fills fireproof material to produce between 50%-80% .
Can Mo Laishi brick contact water? Can be after be being immersed by water, you still used? Mo Laishi brick bases is alumina, main brilliant photograph is Mo Laishi photograph in the product, this product is as won't chemical as water happening reaction, but also do not suggest to contact water or be immersed by water, lest the influence is used.