Calcined Alumina Refractory Powder

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Specifications

1.heat resistant
2,material origin: alumina from Australia
3, produced as per general international law of Bayer
4,ISO, SGS.

Features:

1,heat-resistance and corrosion-resistance

2,Superior quality with competitive price

3, superior material from Australia

Product Description:

Taking the superior industrial alumina as raw material, Calcined Alumina is produced through the method of advanced high temperature down draught kiln with scientific calcine. These make sure it has the advantages as follows: less trash, high transfer rate, stable contraction, and great variety of goods. The shape is fine sand or powdery with white color, As its equal particle sizes and dispersing easily, it has a good sinterability. Calcined Alumina is the basic raw material for heat-resistance and corrosion-resistance products, such as high-alumina refractory, high level ceramic products, car used sparking plug, electronic ceramic parts, material for iron and steel oven, high temperature friction material and polishing grinding products, ect.

Calcined Alumina Parameters

Application	Model	Al2O3	Na2O	Fe2O3	SiO2	TiO2	LOI	True Density	a-Al2O3	D50	Particle Size	Specific Surface
Application	Unit	≥ %	≤%	≤%	≤%	≤%	≤%	g/m3	≥ %	um	um	m2/g
Dry pressing/CIP series	TCH-101	99.7	0.08	0.02	0.018	0.006	0.15	3.96	96	75	2--3	0.6-0.8
	TCH-102	99.6	0.1	0.02	0.018	0.006	0.15	3.95	95	75	2--3	0.6-0.8
	TCH-103	99.5	0.2	0.02	0.018	0.006	0.2	3.95	95	75	2--3	0.8-1.0
	TCH-105	99.4	0.3	0.02	0.018	0.006	0.2	3.93	93	75	2--3	0.8-1.0
Injection moulding	TCH-213	99.5	0.15	0.02	0.018	0.006	0.15	3.95	95	75	3--4	0.5-0.6
Injection moulding	TCH-211	99.7	0.1	0.02	0.018	0.006	0.1	3.96	96	75	3--5	0.5-0.6
Refractory series	TCH-31	99.4	0.3	0.02	0.018	0.006	0.15	3.92	90	75	2--3	0.1-0.8
	TCH-30	99.5	0.25	0.02	0.019	0.008	0.1	3.95	95	3	2--4	1.0-1.2
	TCH-33	99.4	0.3	0.02	0.018	0.006	0.15	3.95	95	43	2--3	0.9-1.0
	TCH-003	99.4	0.3	0.02	0.018	0.006	0.13	3.95	95	4	3--5	1.0-1.2
	TCH-35	99	0.3	0.02	0.02	0.006	0.2	3.9	90	43	3--5	0.9-1.0
Active A-Al2o3	TCH-5H	98.8	0.15	0.02	0.15			3.95	95	1
Active A-Al2o3	TCH-5L	98.6	0.15	0.02	0.15			3.93	93	0.8
Polishing series	TCH-61	97	0.1	0.1-0.2	0.18-2			3.95	95	40-60
	TCH-62	97	0.1	0.1-0.2	0.18-2			3.95	95	4--5
	TCH-63	98	0.1	0.05-0.6	0.18-0.2			3.97	95	4--5
Glazing series	TCH-7	99.6	0.2	0.02	0.018			3.95	95	55
	TCH-703	99.6	0.2	0.02	0.018			3.95	95	15
	TCH-713	99.6	0.2	0.02	0.018			3.95	95	4

$Calcined Alumina Refractory Powder$

Q:What kinds of refractory materials that can resist 3,000 Celsius degree?: I think that graphite is the only one.

Q:Why the refractories should be waterproof and wetproof: The binding agent of many raw materials is water-soluble. It will be useless when meeting water.

Q:Development trend of refractory industry: In recent years, great changes have taken place in the world refractory industry. On the one hand, because of the improvement of technology and equipment and refractories own industrial users of technology progress, and refractory material consumption decreased year by year; in the past 20 years, the average annual consumption per ton of steel refractories decreased about 5 kg. The forecast for the next 5 years the average annual consumption per ton of refractory materials will drop to 0.5-1.0 kg range. The trend of globalization is obvious, and the competition is so fierce that the varieties of refractory materials are diversified, and the performance and quality are obviously improved. The service consciousness and ability of the refractory enterprises are strengthened for the users. Many lack of competitiveness, no modern enterprise management awareness of SMEs have been bankrupt, mergers and acquisitions surging. The production of refractories in developed countries is much higher than the cost of developing countries at the same time, due to more stringent environmental requirements, forcing them to produce only export high value-added products or technology, and bulk products, labor-intensive production shifted to developing countries. Because of its unique advantages of raw materials and labor cost advantages, there is no doubt that China will have more opportunities

Q:What is the classification standard of fireproofing material levels?: the following are the criteria: Currently fire materials levels mainly include:class A : incombustible building material,which almost doesn't burn. class A1: non-combustible, without open fire, class A2, non-combustible, it needs to measure the smoke and be qualified. class B1: nonflammable building material: nonflammable materials have good flame resistance function. when it contacts open fire or is under high temperature, it's difficult to burn and be spreading rapidly, and will stop burn after removing the combustion?source. class B1: combustible?building?materials: combustible materials have good flame resistance function. when it contacts open fire or is put in the air at high temperature, it will immediately burst into flames, and easily result in the spreading of fire, such as wooden column, timber roof truss, timber beam, wooden stairs, etc. class B3: inflammability building materials, without any flame resisting effects, easy to burn, and has large danger of fire disaster. In addition, according to different standards, fire-proofing materials' grade partition is different: DIN4102: A1, A2, B1, B2, B3: EN13501-1 A1, A2, B, C, D, E, F

Q:What's the commonly used refractory material for ladle?: 1. According to the refractoriness, it can be classified as follows: common refractory: 1580℃ ~ 1770℃; high grade refractory: 1770℃ ~ 2000℃; superrefractory: 2000 ℃; 2. According to the shape and demension of the product, it can be classified as follows: standard form : 230mm×113mm ×65mm of no more than four measuring scale, (demension ratio) Max: Min

Q:What substitutes are available for high-end refractories in addition to zircon sand?: If you want to use environmentally friendly products, please use recycled Mo powder.

Q:What is the quote of fireproof and soundproof materials used in KTV?: 1. fire retardant, sound absorbing sheet,eggs,pyramid,sound-absorbing material, piano room, studio, KTV, with glue on the rear, 15 Yuan 2. bar, KTV, fireproof sound insulation cotton, sound-absorbing materials, studio, eggs, drum practice room, sound-absorbing and sound insulation materials, pyramid, 25 Yuan 3. fireproof wood excelsior absorbent, sound absorbing board, wall ceiling decoration materials, materials, theater, KTV, wood color fiberboard, 30 Yuan.

Q:Who can introduce the external wall thermal insulation materials fire rating regulations?: 1. The thermal insulation material of level A combustion performance: Rock wool, glass wool, foam glass, foamed ceramics, foam cement, hole-closed perlite, etc. 2. combustion performance is level B1 insulation materials: Extruded polystyrene board (XPS) after special treatment / Special treatment of polyurethane (PU), phenolic aldehyde and gelatine powder polyphenyl granule 3 combustion performance is level B2 insulation material: Molding polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU), polyethylene (PE), etc. See the 2009 edition construction technical measures 4.3.6 Level A insulation material is only for fireproofing, but its thermal insulation performance is not better than organic XPS \\ EPS and other materials. I feel the best insulation materials should be modified phenolic board, which can keep insulation and fireproofing, but the unit price is very expensive. Insulation materials in the domestic market have some disadvantages, it is better to considere the materials within the acceptable range in the building needs.

Q:who knows the uses of refratories?: Physical properties of refractories include structural properties, thermal properties, mechanical properties, usability and operation. structural properties of refractories include porosity, bulk density, water absorption, air permeability, pore size distribution. Refractory thermal properties include thermal conductivity, thermal expansion coefficiency, specific heat, heat capacity, thermal diffusivity, thermal emissivity. Mechanical properties of refractories include compression strength, tensile strength, anti bending strength, torsional strength, shear strength, impact strength, abrasion resistance, creep property, adhesive strength, modulus of elasticity. Refractories are used in various fields of steel, nonferrous metals, glass, cement, ceramics, petrochemical, machinery, boilers, light industry, power, military and other fields of national economy. They are essential materials that ensures the production run and technological development of the above industries, and play an important role in promoting the developemnt of high temperature industrial production. the usability of refractories include refractoriness, softening temperature under a fixed load, linear?change?on?reheating,thermal shock resistant performance,slag resistance, acid resistance, alkali resistance, hydration resistance, carbon monoxide resistance, conductivity, oxidation resistance.

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