Alumina Bubble refractory Brick

Features of Alumina Bubble Brick:

• High Using Temperature can be above 1750℃ with good thermal stability. Small reheating Linear change rate, longer service life.

• Optimized structure reducing the weight of the furnace:
The bulk density of alumina bubble brick is only 1.1 ~ 1.5g / cm, the weight can be reduced 1.1-1.9t for 1 cubic meter by using alumina bubble brick.

Alumina Bubble Brick

• Material Saving:
It can save 80% fire-resistant insulation material by using alumina bubble brick.

• Energy Saving:
Alumina hollow ball brick has significant insulation properties and low thermal conductivity, which can have a very good insulation effect, reduce heat dissipation, improve thermal efficiency, and thus serve the purpose of saving energy with Energy savings 30%.
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Micro Silica | Micro Silica | Micro Silica

Micro silica, or Silica Fume in the special refractories can form a multi-layer protective layer during oxide. Micro silica has good mechanical properties and resistance to high temperature and oxidation. The special refractory with micro silica powder has obvious improving on the flowability, sintering properties, binding, filled pores performance.

Micro silica

Micro silica Physicochemical Properties:

1, Micro silica appearance: white；Refractoriness > 1600 ℃； Bulk density: 200 to 250 kg / m3.
2, Micro silica fineness: 90% fineness of 0.1μm; average particle size of 0.1 ~ 0.2μm, specific surface area: 20 ~ 28m2 / g. Micro silica fineness and specific surface area is 80 to 100 times of that  of cement, 50 to 70 times of fly ash.

3, Micro silica particle morphology and mineralogical structure: Due to the surface tension of the phase change, micro silica fume forms into amorphous phase amorphous spherical particles with smooth surface, or a plurality of ball particles stick together.

Micro silica fume is a high activity pozzolanic material with large surface area. Micro silica in materials will play the role of lubrication with the tiny spherical body.
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Brown Fused Alumina | Brown Fused Alumina | Brown Fused Alumina

Brown Fused Alumina Raw materials:

1. bauxite: main raw material of smelting corundum, corundum ceramics and single crystal corundum. Bauxite, also known as alumina, main content is aluminum trihydrate (Al203 3H20),  boehmite (A1203 H20), as well as mixtures of opal, hematite, goethite and other minor components. It has requirements on chemical composition, degree of dehydration, melting point and the block for the production of brown corundum.

Brown Fused Alumina

2. carbon materials: reducing agent of corundum smelting, commonly used material are petroleum coke and anthracite.

3. iron: refining agent and diluents for corundum smelting and dilution of silicon alloy density, commonly used materials are steel scrap, cast iron scrap.

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Brown Fused Alumina Data:

Item	Data
Color	Dark brown (dark blue after firing)
Appearance	Trigonal
Hardness (Mohs)	≥9.0
Melting point (℃)	2250
Maximum use temperature (℃)	1900
density (g / cm3)	≥3. 90
Linear expansion coefficient (0-1600 ℃)	7—9

White Corundum | White Corundum | White Corundum

White corundum is a kind of fused alumina products made from high quality alumina powder. White corundum is characterized of high hardness, high purity, excellent self-sharpening, big grinding power, less heat, high efficiency, acid corrosion, high temperature resistance, good thermal stability. As a refractory material, white corundum can be pickling white corundum powder or aggregate granules.

White corundum

Fused White Corundum:

Fused white corundum is mainly processed by high temperature smelting. The main components of white corundum is Al2O3 with content not less than 98.5%, less impurities, high purity, white in color. Since the excellent hardness, bulk density and relatively high specific gravity, fused white corundum is widely used as high temperature refractory materials, abrasive, polishing, sandblasting and other electronic industries.

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Technical Data:

Specification	chemical composition %
	Al2O3	Na2O	Magnetic material %	SiO2
180#—0 200#-0 320#-0	≥99.3	≤0.4	≤0.06	≤0.05

Magnesium Aluminate Spinel | Magnesium Aluminate Spinel | Magnesium Aluminate Spinel

3. Features of Magnesium Aluminate Spinel: high bulk density, high mineral phase content, well developed grain, uniform structure, good quality and stability. Magnesium Aluminate Spinel has good resistance to corrosion, erosion and flaking, good slag resistance, resistance to abrasion, good thermal shock resistance, high temperature performance.
4. Application: Raw material of Magnesium Aluminate Spinel bricks in cement rotary kiln, Ladle lining brick, ladle castable. Spinel is widely used in refractories, steel smelting, cement kiln and glass industrial furnace.

Magnesium Aluminate Spinel

Sintered spinel advantage: The process is a continuous ceramic process, control the feed rate of the kiln and balanced temperature distribution, the crystalline particles are very uniform with size of 30-80μm; and low porosity (<3%).

Advantages of Magnesium Aluminate Spinel: the process is with intermittent operation, a large cast block need to extend the cooling time, cooling of the cast block leading to uneven microstructure， due to rapid cooling, the outside spinel crystal is smaller than inside crystal, low-melting impurities are concentrated at the center, therefore, there is need to sorting and Homogenizing fused spinel raw material.
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Spherical Asphalt | Spherical Asphalt | Spherical Asphalt

Spherical asphalt has fixed carbon, Toluene insolubles, High resin content and low ash content, which is widely used in Iron trough castable, gunning in blast furnace, Ramming materials and unshaped refractory castables. Additive carbon material. Spherical asphalt binder can also play a role in increasing carbon, product temperature and resistance to erosion.

Spherical asphalt

Spherical asphalt is made from coal tar pitch which is processed by heating, spraying, cooling and molding. Put the test material asphalt into dissolved kettle for heating and dissolving. At the same time turn on the power electric lap and liquid asphalt is ejected from the nozzle, the air make it atomized into fine particles. Asphalt particles in the cooling tower come into semi-finished products which sent into the three million vibration screening filter from the cooling bottom to get the final spherical asphalt products.

Softening point: 110 ℃,
Coking value: 58%,
Ash: 0.3%,
Volatile matter: 57%
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Andalusite | Andalusite | Andalusite | Andalusite

Andalusite is generally columnar crystals, with cross-section close to the square shape. The shape of aggregate Andalusite is radially or granular, commonly known as chrysanthemum stone. Andalusite color can be pink, rose red, red-brown or gray, vitreous luster, medium cylindrical cleavage. Morse hardness of Andalusite: 6.5 to 7.5, proportion: 3.15 to 3.16. Heating to 1300 ℃, Andalusite will turn into mullite, which is one of the raw materials to produce advanced refractories.

Andalusite

After calcination, Andalusite can be made profiles that can be used for key parts of the stove, hot air tower, and then stir-fried, it can also be used for a variety of auxiliary casting and handling equipment, can also make the furnace facilities, high temperature aluminum silicate insulator, foundry mold fabrics.

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