Raw Materials for Refractory:90% Round Kiln Calcined Bauxite for Alumina Industry
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- Min Order Qty:
- 0 m.t.
- Supply Capability:
- 25000 m.t./month
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1.Sepcification ,
AL2O3 90%min
Fe2O3 1.5%max
SiO2 4%max
TiO2 4%max
CaO+MgO 0.4%max
R2O 0.20%max
Moisture Absorption 3% max
Bulk Density 3.4g/cm3 min
2.Size200mesh,325mesh,100mesh,0-1mm,1-3mm,3-5mm and 5-8mm
3.Description
Bauxite is earthy mineral which consists mainly of Al2O3 , a kind of hydrated alumina containing impurities. According to the usage, It can be divided into the levels of Metallurgy, chemical industry, grinding, cement, and refractory. Clinker is pale yellow and dark grey. It is mainly used for high aluminum refractory material, and also can be used to make the fused corundum. Our materials of calcined bauxite is mainly D-K Style Bauxite Ore.
4.Specification,
Item | AL2O3 | FE2O3 | TIO2 | K2O+Na2O | CaO+MgO | Bulk density | Moisture Absorption |
AL70 | ≥ 70 | ≤3.0 | ≤4.0 | ≤0.6 | ≤0.6 | ≥2.7 | ≤5 |
AL75 | ≥75 | ≤2.5 | ≤4.0 | ≤0.5 | ≤0.5 | ≥2.8 | ≤5 |
AL80 | ≥80 | ≤2.5 | ≤4.0 | ≤0.3 | ≤0.5 | ≥2.9 | ≤5 |
AL85 | ≥85 | ≤2 | ≤4.0 | ≤0.3 | ≤0.5 | ≥3.0 | ≤4 |
AL86 | ≥86 | ≤2 | ≤4.0 | ≤0.3 | ≤0.5 | ≥3.1 | ≤4 |
AL87 | ≥87 | ≤2 | ≤4.0 | ≤0.3 | ≤0.5 | ≥3.2 | ≤4 |
AL88 | ≥88 | ≤1.8 | ≤4.0 | ≤0.25 | ≤0.5 | ≥3.25 | ≤4 |
AL90 | ≥90 | ≤1.5 | ≤4.0 | ≤0.25 | ≤0.5 | ≥3.4 | ≤3 |
5.Material
Our material is from Yangquan, Shanxi,China. Yangguan bauxite ore have the best plasticity and adhesion. It can improve their product life.
Furnace and fuel,We have 6 shaft furnaces and use the gas for fuel. It can increase the temperature to fully burn, improve the bulk density and reduce impurities. In addition, using the gas can reduce the energy consumption, less CO2 emission for improvement of the work environment.
Annual supply, 60,000mt of calcined bauxite per year
Inspection standard,
GB/T17617-1998----Sampling of raw materials and unshaped products
GB/T 2999-2002----Determination of bulk density of granular materials
GB/T 6900-2006----Chemical analysis of alumina-silica refractories
GB-325782---- Methods for chemical analysis of bauxite
SN/T 0481.1~0481.6—1995----Methods for inspection of bauxite for export
YB/T5180-1993----High-lumina bauxite and hard clay impurities inspection methods
GB/T 15545-1995----Unshaped refractory--Packing, marking, transportation and storage
Application,
1, Aluminium metallurgy
2, Precision casting/Investment casting,
bauxite grog fines can be made into mold for precision casting.
3, Refractory, High alumina bauxite's refractoryiness can reach 1780oC. It is charactered by good chemical stability and mechanical performance.
4, Aluminium silicate refractory fiber, The high alumina bauxite grog can melt under 2000oC to 2200oC in the electric arc furnace.After a series of processing, it can become aluminium silicate refractory fiber, which can be made into fiber blanket, cloth, plate and so on
5, Mixing magnesia and bauxite grog with binders to pour the molten steel ladle for better overall lining performance.
6,Producing bauxite cement
7,Abrasives
8, Ceramics industry
9, Chemistry industry for all kinds of aluminium compound.
- Q: What is the fire resistance thickness of the thin fire-retardant coatings?
- There is no detailed requirement on the thickness of the thin steelwork fireproof coatings and the thickness there refers to a certain thickness which must(at least) have fire resistance for a certain time. The thickness of fireproof coatings in engineering generally depends on the manufacturer's test reports. Our thin steelwork fireproof coatings: the fire resistance is 2.5 hours, the thickness is 4.9 mm, the fire resistance is 2.0 hours, the thickness is 3.5 mm, the fire resistance is 1.5 hours, the thickness is 1.75 mm, the fire resistance is 1.0 hours, the thickness is 1.17 mm.
- Q: What are the electrical fire protection materials?
- Flame retardant organic resin: They can be classied into PVC, vinyl chloride, chlorinated rubber, epoxy resin emulsion, epoxy resin, phenolic resin, etc.. Fire retardant additive: Phosphorus and halogens, nitrogen organic compounds (chlorinated paraffin, tributyl phosphate (TBP) and polybrominated diphenyl ethers) and boron (boric acid, zinc borate, boric acid aluminum), antimony, aluminum, zirconium inorganic compounds.
- Q: Who knows what is the requirement for fireproofing of interior decoration materials ?
- In addition to the underground building, combustion performance level of interior decoration materials inside windowless room , in addition to a class, should advance 1 level based on the original provisions . Library, archives and rooms storing artifacts, ceilings, walls should use class A decoration materials, and the ground should use decoration materials no lower than class B. When high temperature parts of lighting and lighting lamps and lanterns are close to non - grade A decoration materials should be taken, fire prevention measures such as thermal insulation and heat dissipation must be taken. Combustion performance level of materials used for lighting should be no lower than B. Kitchen ceiling, wall and floor should used class a decoration materials.
- Q: What type of firebrick does TZ-3 represent?
- Height is 65mm, length is 230mm, and width is 114mm, that is the t-3 firebricks which meet the national standard.
- Q: Refractory factory grinding brick dust harmful to the body?
- The effect is very large and belongs to lung disease.
- Q: What's the type of fire proofing thermal insulation materials?
- Aluminum silicate: AlSiO3 With flint clay clinker as raw material, aluminum silicate is made by resistance or electric-arc furnace fusion and then spraying processing. Aluminum silicate fiber, also known as ceramic fiber, is a new lightweight refractory material featured by light weight, high temperature resistance, good thermal stability, low heat conduction rate, small heat capacity, good mechanical vibration resistance, small thermal expansion and good thermal insulation. It can be processed into aluminum silicate fiber board, aluminium silicate fiber felt, aluminium silicate fiber rope, aluminium silicate fiber blanket, etc. Featured by high temperature resistance, low heat conductivity coefficient, light weight, long life, good tensile strength and elasticity and no toxin, this new sealing material is an alternative of asbestos and widely used for thermal insulation of thermal energy equipment in metallurgy, electric power, machinery, chemical industry, etc.
- Q: Are the rubber insulation materials are refractory materials?
- Compared with the fireproofing properties, the main thermal insulation properties of level B1 will be carbonized and drop when it is over 200 degree. <p class="answer-refer mt-10 f-light-gray" accuse="aRefer"> Reference: It is provided from technicians of Guangzhou Ou Fu construction materials: The answer that has been got:
- Q: What is the the best ratio of mortar in refractory cement?
- Specifical proportions are as following: 42.5R cement is 425 rapid hardening cement. Using the 425 cement to compound the mortar. The reducion of cement will naturally impact the workability of the mortar. The mix design standard of the mortar specifies the minimum amount of cement is not less than 200kg / m3. If it is composite mortar, and the strength and workability can be ensured, it is Ok to use 425 to compound. You can look for instructions of mixing proportion of mortar online as a reference.
- Q: Where is the development of refractory industry?
- Continuous casting system varieties used in refractory materials include: (1) ladle refractories -- ladle lining, permanent lining, ventilation components; (2) tundish refractories -- linings and coatings, insulation board, cover; (3) functional refractories -- non oxidation casting with long nozzle, immersion nozzle, stopper, sliding gate; (4) purifying molten steel with ceramic purifier, slag dam, alkaline coating and horizontal continuous casting for separating ring gate, etc..
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Raw Materials for Refractory:90% Round Kiln Calcined Bauxite for Alumina Industry
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 0 m.t.
- Supply Capability:
- 25000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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