Raw Materials for Refractory:Calcined Bauxite for Aluminate Cement of CNBM in China
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- Loading Port:
- Tianjin
- Payment Terms:
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- Min Order Qty:
- 11 m.t
- Supply Capability:
- 11111111 m.t/month
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1.Structure of Calcined Bauxite Description
Bauxite (aluminous soil; Bauxite) is also called the alumina or bauxite, main ingredients are alumina, hydrated alumina containing impurities, is an earthy mineral. White or gray, brown and yellow or light red by iron. From 4 to 3.9 g/cm3 density, hardness, 1 ~ 3 is not transparent, very brittle. Very difficult to melt. Insoluble in water, soluble in sulfuric acid, sodium hydroxide solution. Mainly used for aluminium, refractory material.
2.Main Features of the Calcined Bauxite
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 there.By 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.
3.Main usage of the Calcined Bauxite
(1) aluminium industry. Used in national defense, aerospace, automotive, electronics, chemical industry, daily necessities, etc.
(2) precision casting. Alumina clinker made after the mould precision casting processed into fine powder. Used in military industry, aerospace, communications, instrumentation, machinery and medical equipment department.
(3) is used for refractory products. High bauxite clinker refractoriness is as high as 1780, chemical stability strong, and good physical properties.
(4) aluminum silicate refractory fiber. With light weight, high temperature resistance, good thermal stability, low thermal conductivity, heat capacity is small and the advantages of resistance to mechanical shock. Used in iron and steel, nonferrous metallurgy, electronics, petroleum, chemical, aerospace, atomic energy, defense and other industries.
(5) in magnesia and bauxite clinker as raw materials, add the appropriate binder, used for pouring ladle whole ladle lining has particularly good effects.
(6) manufacture alumina cement, abrasive materials, ceramic industry and chemical industry can be aluminum of various compound.
4. Calcined Bauxite Images
5. Calcined Bauxite Specification
| grade | Al2O3 content | Fe2O3 content | TiO2 content | K2O+Na2O content | CaO+MgO content | bulk density |
| 75 | 75%min | ≤ 3.0% | ≤ 4.0% | ≤ 0.3% | ≤ 0.5% | ≥ 2.70 |
| 80 | 80%min | ≤ 3.0% | ≤ 4.0% | ≤ 0.3% | ≤ 0.5% | ≥ 2.80 |
| 85 | 85%min | ≤ 2.0% | ≤ 4.0% | ≤ 0.3% | ≤ 0.5% | ≥ 3.00 |
| 86 | 86%min | ≤ 2.0% | ≤ 4.0% | ≤ 0.3% | ≤ 0.5% | ≥ 3.10 |
| 87 | 87%min | ≤ 2.0% | ≤ 4.0% | ≤ 0.3% | ≤ 0.5% | ≥ 3.20 |
| 88 | 88%min | ≤ 1.8% | ≤ 4.0% | ≤ 0.25% | ≤ 0.5% | ≥ 3.25 |
| 90 | 90%min | ≤ 1.8% | ≤ 4.0% | ≤ 0.25% | ≤ 0.5% | ≥ 3.30 |
6.FAQ of Calcined Bauxite
1). Q: Are you a factory or trading company?
A: We are a factory.
2). Q: Where is your factory located? How can I visit there?
A: Our factory is located in ShanXi, HeNan, China. You are warmly welcomed to visit us!
3). Q: How can I get some samples?
A: Please connect me for samples
4). Q: Can the price be cheaper?
A: Of course, you will be offered a good discount for big amount.
- Q: How about the prospect of refractory material?
- Area depends the market. Resource-based industry
- Q: Application of refractory materials in petroleum industry
- For example, natural gas transportation, chemicals, equipment, fillers, safety, insulation, and even building materials for housing are available.
- Q: What refractories are accessible with ease in daily life? This material is suitable as a disposable mold and crucible for melting brass.
- Well, you have no furnace to cast disposable molds. You can sieve sand which is used for blending cement with siever (left the most fine behind)! And then you can go to hardware (parts) factories directly with molds to ask them to pour. Remember that brass (60 copper) needs to be heated to 1200 ℃, while the crucible is not needed.
- Q: How long is the duration of fire resistance that fireproof door of level B can endure?
- Level B refers to the fire resistance rating and different hours in fireproofing of the fireproof door. Fireproof door of level A can endure fire for 1.5 hours while level B 1.2 hours
- Q: What defect does fused cast refractories have ?
- What defect doesfusion-cast refractory material have ? In glass production, in addition to refractory as a building material and consider its durability, we still must attach great importance to its influence on glass quality. In such cases, the impact on the quality of glass is mainly the defects that eroded down refractory materials mixed in the glass, thus being prodeced of grass products. Defects are mainly foreign body defects such as sand, knot and wave reinforcement. What may directly affect the quality of glass are sidewall block and brick kiln bottom. I hope my answer can help you.
- Q: What types does soft fire prevention materials have?
- 1. In new fire retardant coatings, expanded vermiculite, expanded perlite heat insulation material and cenosphere adiabatic powder are an integral part of thick film type fire-retardant coating. They are also the main factors influencing the fire fire retardant coating performance level. And fireproof heat insulation performance of fire retardant coating is based largely on the back fire coating surface temperature factors, and also related to the fire resistance. If the time of reaching the same temperature is longer, it means its insulating fire stays is better, so the fire resistance is higher. 2. The new type of fire prevention board. Now new type of fire prevention board are welcomed by the people is mostly due to its environmentally friendly. And with an increasing number of high-rise building, the fire and strength requirements are constantly improved. It is a big test for plate performance and the standard. Now fire prevention board mainly adopts siliceous materials or calcareous materials, and then stick with the fiber material, light aggregate, binder and the mixture of chemical additives. In this way, it can not only act as fire prevention, but also can improve the thermal insulation performance, and with light quality, good bearing capacity, good durability, no aging problem. More importantly, it is environmental protection. 3. The new flame retardant materials. New flame retardant material currently focus on in polymer composite material, which performance is good with very good high temperature resistance and heat resistance, therefore it's not easy to deform after the fire. At high temperature, it also can use for a long time, so as to ensure the safety.
- Q: What are the materials of class A fire resistant window?
- Fixed class A fire resistant window should be made up of steel frame, steel casement, and fireproof glass. Fire windows, made up of steel frame, steel casement, and fireproof glass, refers to window that isolate and stop the fire from spreading. Fire window is named according to the main materials of the frame and casement. Window frame is made up of steel and casement wood, vise versa. I hope it is useful.
- Q: How many kilns using refractories are needed? What are the furnaces respectively?
- Rotary kiln, general alumina bricks, high alumina bricks, corundum - mullite brick and vertical kiln. I am limited. Please forgive me that I can only talk about what I know. There are tunnel kiln, clay brick, etc. which can be used in these kiln and shuttle kiln and so on. Shuttle kiln.
- Q: What are the additives and recipes of refractory?
- SM water reducing agent
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Raw Materials for Refractory:Calcined Bauxite for Aluminate Cement of CNBM in China
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 11 m.t
- Supply Capability:
- 11111111 m.t/month
OKorder Service Pledge
OKorder Financial Service
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