Fireproof material is the fundamental material of domain of high temperature technology. Fireproof material application is relatively general is the structural material that regards counteractive high temperature as action in all sorts of hot project facilities and high temperature container and liner. In steely metallurgical industry, coking plant oven basically is made by fireproof material. The blast furnace of puddling reachs all sorts of hot-blast stove, steel-making furnace, soaking furnace, heating furnace to wait to cannot be short of those who accord with a requirement absolutely all sorts of fireproof material.
Not only the modular casting of steel fluid should use up a large number of fireproof material, lian Zhu needs a few high grade and fireproof data more. The fireproof material that the fine outside furnace does not have high grade breed also have no way comes true. Statistical result makes clear, iron and steel industry is to need the branch with fireproof most material, 60% what hold fireproof material total output about. The igneous law smelt of nonferrous metal and its hot-working also cannot leave fireproof material. Etc of building materials industry produces the section of high temperature exercise of silicate goods, if vitreous industry, cement industry, ceramics industry is medium,kilns of all high temperature furnace or its liner must be built by fireproof material. Other the indispensible and fireproof material such as the igneous path of all sorts of roast furnace in if chemical industry, motivation, machinery is made,waiting for branch of exercise of industrial high temperature, sintering furnace, heating furnace, boiler and its have as an attached institution, chimney, covering layer.
Fireproof material breed various, utility each different, be necessary to undertake to fireproof material science is classified, in order to facilitate scientific research, reasonable choose and manage, basically use at each domains of the national economy such as steely, nonferrous metal, glass, cement, pottery and porcelain, petrifaction, mechanical, boiler, light industrial, electric power, war industry, it is to make sure afore-mentioned industrial production move to develop indispensable basic material with the technology, the main effect that cannot replace is having in development of production of high temperature industry. The classified method of fireproof material is very much, basically have a variety of methods such as taxonomy of configuration of taxonomy of technology of taxonomy of chemical attribute taxonomy, chemical and mineral composition, production, material among them.
1. basis is fireproof cent of spent on any account:
Common and fireproof material: Fireproof material waits in 1770 ℃ of 1580 ℃ ～ : 2000 ℃ of 1770 ℃ ～ are advanced and fireproof material: 2000 ℃
Figure of 2. basis product reachs the different cent of dimension:
Standard type: 230mm×114mm×65mm
Not 4 over gage, (dimension is compared) Max:MIn 4:1
Different: Not 2 over reentrant, (dimension is compared) Max:MIn 6:1
Or the acute angle that has 70° of a 50 ～
Distinctive model: (dimension is compared) Max:MIn 8:1
Or not 4 over reentrant; Or the acute angle that has 50° of a 30 ～
Special goods: Crucible, household utensils, canal.
The classification of fireproof material has errant look a lot of kinds:
Divide character by material: Tall aluminium is qualitative pouring makings, aluminium magnesium is qualitative pouring makings.
Press bond cent: Aluminous acerbity calcic cement is pouring makings, phosphatic union pounds dozen of makings kind etc.
Press construction method cent: Fireproof and pouring makings, vibration is pouring makings, do as one pleases is pouring makings, pump sends pouring makings, pound dozen of makings, but makings of paint of plastic, spray, daub, juncture makings, dry batch mixing, press makings.
Indeterminate form is fireproof the work performance of material is very much, include fluidity, condense gender, sclerotic sex, consistency, workability, spreadability, setting time, plasticity, touch metamorphic, adherent rate to wait, those who differ is fireproof and pouring the work performance that expects it is respective and important to have.
Fluidity is to measure vibration fireproof and pouring makings and do as one pleases are pouring the main index of makings, pouring the value is greater pouring makings performance is better, jump over a structure even.
Consistency is to scale the fireproof slop, target that approachs fluidity of makings, fireproof coating. Value of going from place to place is greater, consistency is smaller.
Spreadability and ties ties time are to measure daub to expect the index of even degree. Fireproof daub stuff comes true with plasticizer with the agent that defend water. Determine the habit that spreadability is the member that the basis uses a worker commonly will control.
Touch denaturation to have certain effect to construction, pouring makings man-hour is applied in vibration, the liquidity with ask to have better comes fill each corners, hope after vibration stops internal composition rebuilds quickly again, raise viscosity to avoid grain to slant analyse, form even origanization construction.
Closely related the caky process of setting time and bond, the temperature impact when sufferring climate and construction is very big, in actual production need adds hurried to coagulate according to execution condition the agent will adjust first, coagulate eventually time.
Usually fireproof and pouring of makings time coagulates to be 40 minutes first, and makings of spray paint, daub is rapid and caky, prevent coating to fall off.
Plasticity is to control fireproof pug to happen be out of shape but not craze and break the ranks.
Aluminous silicon fastens fireproof material is the fireproof material that constitutes for basic chemistry with Al2O3 and SiO2. Of the mineral composition that uses raw material by place, chemical composition and manufacturing technology different, can undertake different classification. The product that natural to basically be being used raw material produces, according to how many of the Al2O3 in goods and SiO2 content, can divide it is 3 kinds: Half silicon simple product: Al2O3 content is 15~30% ; Paste earthy product: Al2O3 content is 30~46%(basis the compositive characteristic of our country raw material, it is 30 ～ 48%) commonly; High aluminous qualitative products: Al2O3 content is more than 46%(basis the compositive characteristic of our country raw material, general ＞ 48%) . Half silicon simple product is to use half silicon to be stuck character on, the raw material such as former unripe kaolin or candle stone is made, reason its Al2O3 content is low, do not exceed 30% . Pasting earthy product is it is main raw material with saggar, combustion of one part clay mature makings is changed expect as grain, with the part unripe clay cooperates and become.
High aluminous products can use Al2O3 content to be more than the of all kinds tall aluminous raw material of 46% to be made. The basis of high aluminous products that produces with natural tall aluminous alumina of its Al2O3 content different, customarily can be divided wait for I (Al2O3≥75%) , II (Al2O360%~75%) , III (the composition of chemical develop numerous other people of Al2O348%~60%) of all kinds goods. If goods is,be a feature with the property of main raw material, criterion goods also can name with raw material name. If be main raw material with candle stone,manufacturing goods calls candle stone the brick, the product that produces for main raw material with silicon line stone or andalusite parts brick of stone of appellation silicon line and andalusite brick. If goods uses man-made raw material (like agglomeration corundum, electric frit corundum, synthesis Molaishi) produce for main raw material, in pressing goods advocate brilliant photograph undertakes classified. If not come,stone brick, corundum not comes stone brick.
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