Vitreous kiln uses a kind brick of low stomatic clay is saggar brick, its basically are with tall aluminium alumina and Jiao Baoshi are main raw material, join silicon line to stone, andalusite is deployed according to scale and add bond, adhesive classics to mix refine, shape, dry hind fire of loading of kiln and become small air hole argillaceous goods, porosity is general under 17% .
Brick of low stomatic clay is the fireproof product that makes for main raw material with high grade Jiao Baoshi, its function upgrades in the round, the characteristic is: Strength is great, fireproof degree tall, the organization is compact, air hole is small, thermal shock stability is good, fight flake, by hot-blast stove, vitreous furnace regenerator is used generally. Manufacturing technology: Brick of low stomatic clay is by raw material: Burn argillaceous what makings, dead agglomeration to add up to clay, Henan to death Bai Jiaobao stone these 3 kinds of raw material, part broken into 5-3mm, 3-1mm, the 0.088mm that reach ≤ cooperates other 6 kinds of additive make 6 kinds of pug mix refine to be grain, bond, fine pink, even hind, the brick is pressed to go up in the attrition of 260T, hit 6-8 into adobe with suppress of standard brick model second, in 16h of drying of C of the 110 ° inside oast, the moisture <1% fashionable dress that waits for adobe is like channel kiln fire. Suitable scope: Clay is fireproof product use is extremely extensive, it is the fireproof material with all sorts of industrial kiln indispensable furnace, brick of low stomatic clay is the fireproof product that makes for first data with high grade Jiao Baoshi, its function upgrades in the round, characteristic is: Strength is great, fireproof degree tall, the organization is compact, oxygen aperture rate is low, thermal shock stability is good, fight flake, be chosen generally by regenerator of furnace of glass of metallurgy building materials, petro-chemical, pottery and porcelain and hot-blast stove, glass. The core that design of firebrick of low stomatic clay conceives manage of brick of special type clay to change target is low porosity, Gao He heavy bate temperature and high strenth. The technical train of thought of research and development basically has the following sides: (1) raw material chooses. Brick of special type clay, still be clay brick category, al2O3 content is less than 48% , friend subject raw material still is Jiao Baoshi, but Jiao Baoshi must want sufficient agglomeration is the high grade raw material that with Molaishi brilliant photograph gives priority to. In addition, choose M45 Mo Laishi. M45 Mo Laishi has a variety of brands, among them one kind is by horniness clay the course is handled appropriately (be like wet craft) , hind calcination of classics high temperature (be more than 1500 ℃ ) and into, this raw material is given priority to with photograph of Mo Laishi brilliant, do not have or have a few square quartz, photograph of Yu Wei glass. Wait for index requirement according to loading bate temperature, introduce Molaishi and silicon line stone or andalusite. (2) appropriate grading and manufacturing technology. Press principle of crystal and chemical close together accumulation, raw material uses burden of thick, medium, fine, imperceptible multistage, introduce imperceptible pink or small pink especially. The alternative that produces craft to be like bond, dosage, join means, matrix leveling, firing the parameter such as the system. (3) introduces the agglomeration agent of easy agglomeration, raise the small porosity of fireproof material. This is to develop the characteristic of brick of clay of special type of temperature of bate of low stomatic tall loading and crucial seat. Selects agglomeration agent is natural compound 3 stone are mineral, granuality is imperceptible (- 200 eye or - 325 eye) main mechanism is: The composition of agglomeration agent is Al2O3-SiO2-Fe2O3 (Shang Han TiO2, R2O) is, this system is in 1200-1300 ℃ is easy form fluid photograph, fluid photograph makes Molaishi generate, development, the Molaishi of matrix of grow in quantity, aggrandizement matrix, seal the stoma in blocking material up at the same time, reduce material porosity. Technical conception notices the principle that is guidance with microstructure, stone of line of Mo Laishi of high grade Jiao Baoshi, M45, silicon, andalusite or M70 Mo Laishi are chosen on choice of main raw material, have more Molaishi substance appearance, and there also are 3 rocks in matrix, there is particular kind again in agglomeration agent compound type 3 stone. Such, accomplish enhance matrix microstructure. 3 stone are mineral former below high temperature generate Molaishi besides the photograph, photograph of fluid of Yu Weifu SiO2. The rest of SiO2 double function: It is with Al2O3 reaction produces Mo Laishi; 2 times 2 it is OK the stoma in stuff stuff, raise small porosity, obtain the brick of special type clay of temperature of bate of low stomatic tall loading thereby. Low stomatic Gao He weighs microstructure of part of matrix of brick of clay of bate temperature special type, can see from inside the graph many and acicular, columnar photograph of the glass between distributinging He Jijing of Mo Laishi crisscross. Brick of low stomatic clay basically uses utility of brick of clay of vitreous kiln small air hole at the place of vitreous kiln regenerator, it still can apply at steely industry blast furnace, hot-blast stove; The cement kiln of building materials industry; The kiln furnace such as kiln of chemical industry chemical industry, regard kiln furnace as liner. Does vitreous kiln use brick of low stomatic clay with kiln of glass of price of brick of low stomatic clay how many money a ton? Be in commonly 2500 the left and right sides, this quote offers reference only (the float that causes price of brick of low stomatic clay as a result of element of raw material etc) , price of brick of specific low stomatic clay can seek advice from flourish Cheng Naicai's salesperson. The advantage of brick of low stomatic clay chooses to send density the raw material with tall, bibulous low rate, passing reasonable grading is to make the key that gets brick of low stomatic clay. When fire clay brick, ordinary control is in temperature 1380 ℃ of 1350 ℃ ～ , raise brick of low stomatic clay appropriately firing temperature (1420 ℃ ) , argillaceous brick systole increases somewhat, make the density of firebrick has a bit thereby increase, low porosity is able to reduce. As a result of the affiliation of additive, in fire process, argillaceous brick interior forms many small air hole. Argillaceous brick ruptures in whole before, in-house small air hole is right of argillaceous brick rupture have prevent and inhibition. Lay brick of used clay of molten iron canister as condition of high temperature thermal shock, in use process, its surface crackle can be not caused rupture, serious is the heat that in-house thermal stress causes flakes, should reduce porosity appropriately, and when making a large number of small air hole, below thermal shock, crack length of argillaceous brick interior shortens, the amount increases somewhat, mutual crisscross forms crackle meshy rate increases. Accordingly, of the need when argillaceous brick ruptures rupture can increase, can increase the thermal shock stability of argillaceous brick effectively, make argillaceous firebrick is fought flake function in order to rise, make kiln furnace life rises greatly thereby.
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