• Ultralow Cement Refractory Castables Raw Materials for Refractory System 1
Ultralow Cement Refractory Castables Raw Materials for Refractory

Ultralow Cement Refractory Castables Raw Materials for Refractory

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Specifications

1) ISO9001:2000
2) Reputation and Quality first
3) Low cement castables, Ultralow cement
4) Non-cement, Mullite

1), Product Information

Our company is located in the national famous excellent quality bauxite region, which has large reserves bauxite, good quality, convenient transportation. That is the first choice of the production of refractory castable. Our production is 1000 tons per month at present.

*Refractory Castable Products

Low cement castablesUltralow cementNon - cementMullite
BrandWLC-45WLC-70WLC-85WUC-45WUC-70WUC-85WNC-45WLC-70WNC-85MP-45MP-60MP-70
Chemical composition (%)AL2O3≥45≥70≥85≥45≥70≥85≥45≥70≥85≥45≥60≥70
Cao≤2.5≤2.5≤2.5≤1.5≤1.2≤1.0≤2.0≤2.0≤2.0
Volume density≥2.3≥2.6≥3.0≥2.3≥2.6≥3.0≥2.3≥2.6≥3.0≥2.3≥2.3≥2.5
(g/cm³)
Bending strength (Mpa)110°C after drying at≥5≥8≥12≥4≥6≥10≥2≥3≥4≥4.0≥4.0≥4.0
°C×3h after fining at1350≥81350≥121500≥151350≥101350≥121350≥151350≥91350≥101500≥121350≥81350≥101350≥10
Crushing strength (Mpa)110°C after drying at≥20≥30≥40≥20≥30≥40≥10≥12≥15≥20≥20≥20
°C×3h after fining at1350≥401350≥501500≥601350≥501350≥601500≥701350≥501350≥701350≥801350≥401350≥451350≥50
°C×3h Linear change rate after firing (%)1350±0.51350±0.51500±0.51350±0.51350±0.51500±0.51350±0.51350±0.51500±0.51350±0.51350±0.51350±0.5
Serivce temperature(°C)140015001600140015001600140015001600140015001600

Main application: Widely used in various industry furnaces as refractory linings, such as blast furnaces, hot alr stove, reheating furnaces, soaking pit, water-cooling pipe binder, trough covers, steel ladle covers, electric furnaces roofs ceramic kilns, cement kilns, boilers, high temperature klins in the fields of petrochemistry and chemistry etc.

Remark: All products can be reinforced by steel fiber.


FACTORY:


Q:What material is used to make furnace pipe of refractory bricks?
Refractory bricks furnace pipe material is generally divided into two types, namely, shapeless refractory material and shaped refractory. Shapeless refractory material, also known as castable refractory, is hybrid powder material made up of many kinds of aggregate or aggregate and a kind of or many kinds of binders. It must cooperate and evenly stir with a kind or many kinds of liquids during use and has strong mobility. Shaped refractory material usually refers to refractory brick whose shape has standard rules. It can also be proceeded temporarily during cutting according to requirement.
Q:What's the refractory material in common use currently?
According to its category, raw material of basic refractory: Mainly magnesite (magnesia), dolomite, lime, olivine, serpentine, high alumina material (sometimes neutral); main neutral raw material: chromite, graphite, silicon carbide (artificial).
Q:Who knows how many kinds of fireproof insulation materials are there in the market?
The so-called A-level materials in fire insulation materials, namely, the WW non-combustible insulation materials, and the WW material s are A-level. Inorganic fireproof and thermal insulation materials can be used as wall insulation materials to replace red bricks, therefore, they, as thermal and cold insulation materials, can reduce the thickness of walls, and save energy, as well as expand applicable areas indirectly, decreased structure weight. They are very good.
Q:What are the differences and connections between softening temperature of the refractory under a fixed load and thermal resistant creep property of the refractory?
The result of refractoriness under load is temperature while the result of creep is percentage of deformation. Refractoriness under load and creep can be tested by an instrument. Refractoriness under load reflects the temperature in which the deformation reaches a certain degree under the condition of load. Creep reflects the deformation refractory has under the condition of constant temperature and load. Both refractoriness under load and creep are important criterion for the operating temperature of refractory.
Q:What is the most reasonable drying heating curve of magnesia refractories? Products of less than 0.5T
The material is very troublesome, it might crack horrendously if not baked well and all of them may be scraps after being took out from the furnace. Magnesia hydration is inevitable during the baking process. As volume expansibility of magnesite reaches 200%, so it is easy to crack. The key to bake is to quickly rule out the water vapor in furnace, especially within 150 degrees Celsius. After quickly ruling out the water vapor in furnace to avoid excessive reaction with magnesia of 150 degrees, it can be operated in accordance with convention. In addition, you should pay attention to the heat sources, for which i recommend electrical and coke to avoid generating a lot of water vapor during the natural gas combustion process which will worsen the situation.
Q:what's the varieties of fire-proof?sealing?material?
ATD-AB, organic fire-proof caulking, fire retardant bag, fire retardant net, fire retardant ring, fire barrier wrap, fireproofing sealing strip, flexibility fireproofing coiled material, fireproof glue, etc., fireproofing sealing materials currently on the market can be divided into two types, one is the traditional type: flexible organic caulking, WXY-II, fire retardant bag, fire?bulkhead, cable refractory coating; there are some new materials used in large-scale projects: fireproofing coating board system (fireproofing coating board, intumescent fireproof sealing tape, elastic fireproof sealant, Waterborne Fire-retardant Coating), fire retardant module system (fire retardant module, sealing gum, cable refractory coating), fireproofing plaster system (fireproofing plaster, sealing gum, cable refractory coating).
Q:How long is the duration of fire resistance of hollow glass magnesium board
Glass magnesium board is non-combustible board with excellent fire resistance ability, the continuous burning time of flame is 0, non-combustible at 800℃, no flame at 1200℃, achieving the highest level of fire retardant level A1; Partition System cooperated with high-quality keel can endure fire for more than 3 hours. In the process of combustion, a large amount of heat energy can be absorbed, and the temperature of the surrounding environment will be delayed.
Q:The mechanism and function of antioxidants in carbon containing composite refractories are briefly described.
With the advantages of carbon refractories especially excellent slag resistance and high heat stability, but graphite under high temperature oxidation, in order to improve the oxidation resistance of carbon composite refractory materials, often adding a small amount of antioxidants, to improve the oxidation resistance of carbon composite refractories. Antioxidant additives commonly used in metal powder, silicon powder, magnesium powder, silicon carbide powder and so on.
Q:What is the criterion of entry of refractory clay industry?
Standard sizes of refractory bricks in our country are: 230mm × 114mm × 65mm; ordinary brick: 240 * 115 * 53, Building blocks: (blind holes, through-holes) 240 * 390 * 190 * 190,240 * 190,240 * 190,190 * 90 * 190 * 390 * 190,190 * 190,190 * 190,190 * 190 * 90 * 190, 140 * 390 * 190,140 * 190,990 * 190 * 200 * 400, from 0 * 390 * 190 * 190,90 * 190,90 * 90 * 190. There is also an interlocked hollow blocks: 90 * 200 * 200 * 400,90 * 245,90 * 200,90 * 200 * 200 * 100, 90 * 200 * 290,150 * 275,150 * 200 * 200 * 200, 150 * 200 * 100, 150 * 200 * 290.
Q:What are the commonly used admixture for alumina-magnesia refractory? What are the impacts on its performance?
Sodium silicate, pure calcium aluminate cement, boric acid

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