Alumina Calcined Bauxite Raw Materials for Refractory - Supplied by CNBM China
- Ref Price:
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- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 0 m.t.
- Supply Capability:
- 25000 m.t./month
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1.Quick Details
Place of Origin: | Shanxi, China (Mainland) | Shape: | Powder | Material: | bauxite |
SiO2 Content (%): | 10-30% | Al2O3 Content (%): | 70-88% | MgO Content (%): | 0 |
CaO Content (%): | 0 | Refractoriness (Degree): | 1770°< Refractoriness< 2000° | CrO Content (%): | 0 |
SiC Content (%): | 0 | Model Number: | GAL | Brand Name: | CNBM |
shape: | clinker, paricles or powder |
2.Packaging & Delivery
Packaging Details:1mt big bag
Delivery Detail:7days for ready goods
3.Specifications
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 |
4. Pictures
5.Usage
(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 compounds
- Q: what grades are fire resistance of fireproofing glass divided into?
- Fireproofing glass is a kind of special glass which can keep its integrity and thermal insulation performance in regular insulating refractory trials. and it can be divided into three classes according to its fire resistance: Class A, it's a kind of fireproofing glass that can satisfy the requirements of refractory integrity, refractory and thermal insulation at the same time. This kind of glass has the properiyies of transmittance, fireproofing ( smoke insulation, fireproofing, and keeping out thermal radiation), sound insulation, shock resistance, and it's suitable for steel and wooden fire door of building decoration, windows, varnishing, partition walldaylighting?roof,ceiling?screen,perspective floor and other construction components demading for transparency and fireproofing. Class B, it's a kind of fireproofing glass that can satisfy the requirements of refractory integrity, refractory and thermal insulation at the same time. Such kind of fireproofing glasses mostly are composite fireproofing glasses and has characteristics of transmittance,fireproofing and smoke insulation. Class C, it's a kind of fireproofing glass that only satisfies the requirements of refractory integrity. This kind of glass has characteristics of transmittance, fireproofing, smoke insulation and high strength,etc. It's suitable for fireproofing glass partition wall, fire Windows, outside curtain wall and other places without insulation requirements.
- Q: what is best for making refractory insulation for Blast furnace, hot stove.
- high alumina insulating brick diatomite?brick
- Q: How many kinds of A-level fireproof and thermal insulation materials are there?
- Please give us some information about the kinds of A-level fireproof and thermal insulation materials in the market.
- Q: The mechanism and function of antioxidants in carbon containing composite refractories are briefly described.
- 3, the selection principle of antioxidant and its thermodynamic and kinetic mechanism31 selection principles of antioxidants:(1) according to the thermodynamic data and the conditions of use, the possible condensed phase and the vapor pressure of each gas phase are determined;(2) compare the size of each coacervation and oxygen affinity, and the possibility of reaction with CO.(3) the influence of various reactions on the microstructure of brick was analyzed.The thermodynamic and kinetic mechanism of 3.2 antioxidantsFrom a thermodynamic point of view, at the operating temperature, the additives or additives that react with carbon react with oxygen more closely than carbon and oxygen, giving priority to carbon oxidation, thus protecting carbon;From the analysis of dynamics point of view: the compound additive with oxygen and carbon monoxide reaction changed the microstructure of carbon composite refractory materials, such as increasing the density, blocked pores, hinder the diffusion of oxygen and reaction products.
- Q: What's the refractory material?
- Main components of basic refractory are magnesium oxide and calcium oxide, and magnesia brick is commonly used. For the magnesia brick with magnesium oxide content of more than 80%-85%, it has good resistance to basic slag and scum, and it has higher refractoriness than that of the clay brick and silica?brick. It is mainly applied to the open hearth furnace, oxygen-blown converter, electric furnace, non-ferrous metal smelting equipment and some high-temperature devices.
- Q: Who can tell me about the foundry refractory materials?
- Such as: neutral, alkalic, acidic refractories. Of course, the raw materials of different materials are not the same. Such as: the magnesia-carbon bricks, basic refractory materials: magnesite(electric?smelting, high-purity)+ crystalline flake graphite+ phenolic resin+ additive (aluminate or silicon powder or silicon carbide powder or high-temperature pitch) and so on.
- Q: What is fireproofing material? Are fireproof materials the same thing with thermal insulation materials and refractories?
- The refractory material is capable of withstanding high temperature burning, while fireproofing material is to prevent burning. They are different from each other
- Q: What needs to be noted when choosing and using blast furnace fireproof materials? Who knows?
- there are different temperatures in various parts of the blast furnace, thus using different types of refractory.
- Q: which kind of refractory is commonly used in the industry
- Therefore it is known as special fire-resistant materials, such as yttria, high alumina raw material (sometimes neutral), olivine,which is used for alkalinity furnace, dolomite, and we roughly divided into several categories, beryllia, cerium oxide, these materials have a strong alkaline slag resistance, thorium oxide, lime, serpentine, which is picked from these refractory raw materials. the raw materials of basic refractory materials are mainly magnesia clay and titanium oxide, but because not many sources of raw materials, it can not be widely applied in the refractory industry, and we can analyze which kind of materal is processed by the pulverizer. There are many kinds of refractory materials, rotary?kiln can only be used in particular circumstances. These materials have a variety of slag resistance at different degrees. the main material of special refractories is zirconium oxide. the refractory clay is the most basic and most widely used raw material in the refractory industry.
- Q: How to divide the fire resistant level of construction thermal insulation materials?
- 1, Combustion performance of the national standard building materials are divided into the following levels: Class A: incombustible building material: Material that almost never burn. Class B1: nonflammable building material: Nonflammable materials have good effect of flame resistance. In case of fire it in the air or at high temperature it is difficult to catch fire and spread, and when the fire source is removed, the combustion can stop immediately. Class B2: combustible?building?material: Combustible materials have good effect of flame resistance. In case of open fire in the air or at high temperature, it will immediately burst into flames and spread the fire quickly, such as wooden column, timber roof truss, wooden stairs, etc. Class B3: flammable building material: No flame-retardant effect, highly flammable, high risk of fire. 2, According to fire?rating, external wall thermal insulation materials can be divided into 1) thermal insulation material with class A combustion performance. Rock wool, glass wool, foam glass, foamed ceramics, foam cement, hole-closed perlite,etc. 2) thermal insulation material with class B1 combustion performance: Extruded polystyrene board (XPS) after special treatment /polyurethane (PU) after special treatment , phenolic aldehyde, gelatine powder polyphenyl granule, etc. 3) thermal insulation material with class B2 combustion performance: Molding polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU), polyethylene (PE), etc.
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Alumina Calcined Bauxite Raw Materials for Refractory - Supplied by CNBM China
- 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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