Raw Materials for Refractory:Chinese Calcined Bauxite Made in China

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Place of Origin:	Shanxi, China (Mainland)	Shape:	Block	Material:	Alumina Block
SiO2 Content (%):	<8%	Al2O3 Content (%):	75%-90%	MgO Content (%):	<0.5
CaO Content (%):	<0.5	Refractoriness (Degree):	1770°< Refractoriness< 2000°	CrO Content (%):	0.0
SiC Content (%):	0.0	Model Number:	75,80,85,86,87,88,90	Brand Name:	CNBM
Fe2O3:	3.0 max	K2O+NA2O:	0.3 max	TIO2:	0.4 max
CaO+MgO:	0.5max	shapes:	granula and powder	bulk density:	2.70min
H.S.code:	2508300	Moisture:	0.03% max	color:	yellow,black and white granula and powder
application:	abrasive ,cement ,chemical, metallurgical, and refractory and so on

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

Calcined bauxite:
1.16 years producing experience;
2.self-owned mines;
3.competitive price;
4.strictly quality control

Calcined bauxite specification:

Q: Why can aluminium hydroxide not be used to make refractory material?: Hope my answer is helpful to you. It decomposes and produces aluminium oxide and water after heating, chemical equation for the reaction is: 2Al(OH)3=△=Al2O3+3H2O. Aluminium hydroxide can't be directly used to make refractory material because aluminium hydroxide is not stable.

Q: What's the texture of refractory for the hearth of reverberatory?furnace? ?: High alumina brick; you can use zircon brick under the temperature above 1700? ;may i use mullite bricks under the temperature from 1400 to 1700? you can use clay brick and heavy corundum brick under the temperature of below 1400 degrees, question closely: what's the usage temperature of reverberatory?furnace? < pre accuse = "qRA" > is there someone use refractory fiber?

Q: What is the difference in the nature between the refractory material and thermal?insulation?material: thermal?insulation?material is a material which has a strong impedance to the heat flow. the nature of the material requires that the material can isolate the delivery of thermal, and the low heat conductivity coefficient and expansion coefficient of the non-metal material.refractory is good in heat resisitance and chamical erosion but not high temperature resistance. Requirements on nature is still in high temperature.

Q: What are the applications of refractory busway?: Fire-resistant busway has excellent insulation property, and it can not only be used continuously in a normal environment, but also be used continuously when catching fire for more than one hour. It can be used in high buildings and important facilities in replace of fire-resistant cables to transmit and distribute electricity.

Q: What's the maximum temperature that the refractory ceramic fiber cloth can endure?: While the refractory ceramic fiber cloth is different in high temperature resistance, and in general it can endure the high temperature of more than 1000℃. Ceramics in daily use and art ceramics: Bone china and Guangdong chinaware can generally endure the highest temperature of 1100℃. Jingdezhen porcelain and ceramics: They can generally endure the highest temperature of 1280℃-1340℃, and some special ones can endure the highest temperature of 1400℃. Industrial ceramics: Some of them can endure the highest temperature of about 2600℃. (alumina ceramics: their melting point is 2050℃, and boiling point is 3000℃).

Q: Does anyone know about the classification standards of B2-level fireproof and thermal insulation materials?: The classification standards of B2-level fireproof and thermal insulation materials: 1. the national standard GB8624-97 classifies construction materials combustion performances into several grades, B2-level: combustible building materials: combustible building materials can play a certain role in preventing combustion. It will immediately burst into flames when coming across open fire or at high temperature, and will lead to fire spreading, such as wooden pillars, roof frames and beams as well as stairs. 2.The exterior wall thermal insulation materials can be classified according to fire rating, insulation materials with B2-level combustion performance are: Expanded polystyrene sheets(EPS), Extruded polystyrene board(XPS), Polyurethane(PU), Polyethylene(PE), etc.

Q: How should fireproof building materials be ranked?: According to our national standard GB8624-97, the combustion performance of building materials are divided into the following levels: A class: Incombustible building materials: the material is almost incombustible. B1 class: Flame-retardant building materials: they are better in fire retardation. It is non-combustible when meeting open fire in the air or under high temperature, and it is difficult for the fire to spread quickly. Besides, when the fire source is removed, combustion stops immediately. B2 class: Combustible building material: It has certain fire retardation. In case of open fire in the air or at high temperature, it will immediately burst into flames, and easily lead to the spread of fire, such as the spread to wooden pillars, timber roof truss, timber beams, wood stairs, etc. B3 class: Flammable building material: It has no fire retardant effect at all, but is highly flammable with high fire risk. Hope my answer can be accepted.

Q: What kind of material is refractory bauxite?: In China it is generally believed: "Bauxite ore refers to the mineral with a fairly high aluminum content (over 40%), and aluminum silicon ratio is greater than 2.5 (A / S≥2.5). Minerals with an aluminum content less than this value is called clay ore or allite shale or aluminious rock. " In China, it has been explored that monohydrate bauxite ore accounts for about 98% of the total reserves of bauxite.

Q: What level is the rock wool board fireproofing material ?: The fire rating classification is a provision for all insulation materials, rather than to separately divide rock wool. Determine the value of the material fire rating according to the relevant test items of 8624. As the rock wool is made from basalt fusion, so it is the level A non-combustible material. And those we usually see are the mineral?cotton and glass wool, with its refractory temperature lower than the rock wool's. Rock wool board is now mainly used in wall insulation, which is a level A fire insulation material.

Q: what textures of furnace refractories are good?: Common ceramics use ordinary clay and high alumina bricks, as well as thermal insulation bricks, calcium silicate boards and fiber cotton. The vessels fired with potter's earth are called pottery, and the vessels fired with porcelain clay are called porcelain. Ceramic is generic term of pottery, stoneware and porcelain. The objects taking the two different types of clay as the raw materials, like, potter's earth and porcelain clay, and made through the technological process of ingredients, forming, drying and roasting, ect. can be called ceramics.

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