Raw Materials for Refractory:China Supplier 75% Calcined Bauxite Price
- Ref Price:
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- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
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Product Introduction
Calcined bauxite is one of the principal ore of aluminum. Calcined bauxite contains hydrous aluminum oxides and aluminum hydroxides, formed through the laterization of aluminous rocks in tropical and subtropical areas .calcined bauxite is obtained by calcining (heating)superior grade bauxite at high temperature (from 85OC to 1600C) .this removes moisture thereby increasing the alumina content. compared to an alumina content of about 57%to 58%in raw bauxite, calcined bauxite has an alumina content of 84%to88%.the heating is carried out in rotary kilns.
Applications
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 refractoriness can reach 1780°C.
It is charactered by good chemical stability and mechanical performance.(Al2O3 ≥48% with low Fe2O3)
4.Aluminium silicate refractory fiber: The high alumina bauxite grog can melt under2000°C-2200°C in the electric arc furnace. After a series of processing, it can become aluminium silicate refractory fiber, which can be made into fiber blanket,plate,cloth.
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.
Packaging & Delivery
| Packaging Details: | 25kg/Bag,1Mt/Bag,1.25Mt/Bag; Or as per Client's request |
| Delivery Detail: | 7-15 days upon receipt of prepayment by TT or L/C |
Specifications
Calcined bauxite:
1.Al2O3 :75%min
2.Fe2O3 :1.5% max
3.High quality and competitive price
4.Hot sale overseas
Calcined bauxite specification:
Grade | AL2O3 | FE2O3 | TIO2 | K2O+Na2O | CaO+MgO | Bulk density |
75 | 75min | ≤3.0 | ≤4.0 | ≤0.3 | ≤0.5 | ≥2.70 |
80 | 80min | ≤3.0 | ≤4.0 | ≤0.3 | ≤0.5 | ≥2.80 |
85 | 85min | ≤2 | ≤4.0 | ≤0.3 | ≤0.5 | ≥3.00 |
86 | 86min | ≤2 | ≤4.0 | ≤0.3 | ≤0.5 | ≥3.10 |
87 | 87min | ≤2 | ≤4.0 | ≤0.3 | ≤0.5 | ≥3.20 |
88 | 88min | ≤1.8 | ≤4.0 | ≤0.25 | ≤0.5 | ≥3.25 |
90 | 90min | ≤1.8 | ≤4.0 | ≤0.25 | ≤0.5 | |
- Q: What is the requirement of refractory concrete for raw materials? What is the main principle of commercial mixing station?
- There are many kinds of raw materials used, three, two aluminum oxide is one of the most commonly used raw materials, as well as alumina, hollow ball, Magnesium Oxide, zircon, etc., or the specific design temperature and the use of parts.
- Q: What is the difference between wear-resistant material and refractory material?
- There must be difference. The requirements of refractory material are that it can be called refractory material when temperatures it can withstand are over 1570 ℃. Refractory material must have high strength. The specific value of refractory material is not clear.
- Q: Who can introduce the difference between galvanized fireproof?coatings and steel structure fireproof materials?
- Steel structure with heat galvanization has a process requirement, which is to spray fireproof coatings. Fireproof coatings have different functions and purposes from galvanized process. When the steel surface derusted, it generally needs to brush rich-zinc primer before spraying fireproof coating. Fireproof coating plan itself includes anticorrosion plan, and fireproof coating is just a layer of coating plans, which is an intermediate layer in general. Fireproof coating plan generally includes primer, fireproof coating and finishing paint. Some fireproof coatings can be directly painted on the bare steel elements without primer and finishing paint.
- Q: What characteristics do A grade external wall fireproofing material have?
- 1. Save space and reduce costs; 2. Fireproofing, green and environmental protection; 3. Waterproofing; 4. Sound insulation; 5. Thermal insulation; 6. Install easily and shorten the construction period; 7. High safety performance.
- Q: how about the performance of aluminum silicate fire proof thermal insulation?
- aluminum silicate fire proof thermal insulation board has a good performance. it is a artificial board that separates the wood and plant fiber by mechanical and chemical methods and mixed the adhesion agent and water-proofing?agent, molding by high temperature and high press. the density of fiber. tha above information is coming from the Internet and it is just for reference.
- Q: What are the characteristics of the carbon composite refractories?
- The features of carbon composite refractories: 1. It is with an aggressive high thermal shock resistance 2. Good resistance to molten steel and slag
- Q: which kind of refractory is commonly used in the industry
- Like silicon, magnesium calcium and metallurgy refractories, glass, silicon, etc., knowing the basic materials, and the businesses are not the same. I suggest that you can buy the refractory book to read.. Others include zircon, shapeless refractory material and so many other cement, such as magnesia, high alumina,ect.. Iron making is using the acidity material, continuous casting is using the clay, nonferrous metals and other types of more complex hot-press charcoal; steel making is using the alkaline, magnesium chrome, magnesium carbon, and clay,etc..
- Q: what needs to be noted when choosing and using blast furnace fireproof materials?
- Hello,: three parts of the blast furnace lining in general are easily corroded. The first one is furnace bosh,second is the middle part of the furnace, The third is lower part of the furnace stack. if These parts are damaged, then we need an overhaul. Bosh, because damage to the middle part of the furnace and the furnace bosh are generally due to alkali metal and fusant erosion. the main reason for the lower furnace part damage is molten iron, slag. In view of this situation, mullite bricks, corundum bricks, silicon carbide bricks are used for reparation. make repairments as soon as possible if any problems occur in case of incidents.
- Q: what's the requirements of refractory for forge furnace?
- . . . . . . . .
- 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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Raw Materials for Refractory:China Supplier 75% Calcined Bauxite Price
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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