In recent years, bauxite powder and bauxite have been widely used in common cast steel coatings and cast iron coatings due to their high fire resistance, good chemical stability, small expansion coefficient, rich source and low price.
Item NO.:
YYH-0018Product Origin:
CHINALead Time:
7-15
Calcined bauxite, referred to as high-alumina material, is the raw bauxite calcined at high temperature (1200 -1700) is known as cooked bauxite. The main minerals of bauxite clinker are boehmite and high-alumina silica. The content of boehmite increases with the increase of the proportion of Al2O3 and SIO2. Secondary minerals include rutile, Jiangui iron ore and so on.
High alumina powder bauxite powder for foundry coatings. Bauxite is characterized by its high refractoriness, good chemical stability, small expansion coefficient, abundant sources and low price, in recent years, it has been widely used in common cast steel coatings and cast iron coatings.
The content of Al2O3 in bauxite, sintering temperature and impurity content such as TI02, FEO3 have great influence on the coating, in addition to the high content of TI02 and FEO3, the addition of dust and mechanical iron increases during the process of forging and grinding, at present, the processing of bauxite powder is mainly Raymond Mill, and the wear-resistant parts are mostly high-manganese steel castings, which are difficult to remove by magnetic separation, second, the increase of floaters and precipitates will affect the paint brush, suspension and storage time.
The particle size and particle size distribution of bauxite are the important factors that affect the compactness and permeability of the coating, especially whether the pyrolysis products of the lost foam plastic pattern can be discharged smoothly through the coating during the sintering process, the permeability of EPC coating is one of the characteristics which is different from other sand casting coatings. According to different needs, the company will bauxite particle size grading into two different specifications were used in sand casting coating and lost foam coating.
Bauxite is the main raw material for making refractory bricks, Castables, special ceramics, coatings, bauxite cement, foundry accessories, industrial alumina and other Refractory, it is mainly used in Refractory, aluminum industry, precision casting, water treatment, special ceramics, coatings and other industries. The company can process different granularity products according to different uses. Classification of bauxite clinker grades:
85% or more of Grade I superfine earth gray or dark gray
Grade I 75-85% earth gray or dark gray
Second class second class 65-75% White Gray
Third Class, third class, 50-65% cyan
Grade 4 is less than 50% cyan gray
Calcined bauxite indicators:
|
chemical composition |
Refractory temperature |
Volume density |
size |
||
|
Al2O3 |
CaO |
Fe2O3 |
|||
|
>85 |
<0.6 |
<1.4.0 |
>1790 |
>3.6 |
10-20、16-30、30-60、40-70、70-100、120、170、200、320mesh |
|
>80 |
<0.6 |
<3.0 |
>1790 |
>3.0 |
|
|
70~80 |
<0.8 |
<3.0 |
>1790 |
>2.8 |
|
|
60~70 |
<0.8 |
<3.0 |
>1770 |
>2.65 |
|
|
50~60 |
<0.8 |
<2.5 |
>1770 |
>2.55 |
|
Bauxite is the main raw material for making Refractory, refractory bricks, Castables, special ceramics, foundry coatings, bauxite cement, foundry accessories, industrial alumina and other Refractory, it is mainly used in Refractory, industrial aluminum smelting, precision casting, water treatment, special ceramics, coatings and other industries, various high alumina bricks and clinkers made from high alumina bauxite clinker are widely used as refractory or anticorrosive materials in metallurgical industry and other industries, especially in the top of electric furnaces, blast furnaces and hot blast furnaces. The refractory effect is very obvious, the performance is superior to the ordinary clay refractory brick.
Calcined bauxite according to different uses are:
1. refractory bauxite;
2. grinding bauxite;
3. welding bauxite;
Production of calcined bauxite powder is a fine powder, usually 100-325 mesh, made from calcined cooked bauxite ore and ground by Reymond. It is widely used in the Refractory industry. The bauxite powder used in the foundry industry is mainly used in the production of various foundry coatings, such as Lost-foam casting coatings, refractory aggregates for various sand mold casting coatings and powder for investment casting topcoat. Requirements of low impurity content, high alumina content, commonly used bauxite powder indicators as follows:
Bauxite sand (powder) is a new type of high-grade Refractory. Normal size: 0-1mm, 1-3mm, 3-5mm, 5-8mm, 8-15mm, 0-5mm, 0-50mm, other size can be processed as required. It is suitable for surface coating and sanding material in investment casting, and it can also be used as refractory aggregate of other kinds of casting coating. This product has small expansion coefficient, high fire resistance and good chemical stability. Common Refractory for EPC steel and cast iron coatings.
This product is selected high calcined bauxite , through crushing, screening, magnetic separation, washing, drying and other processes.
Calcined bauxite according to your requirements shipping :
1.20GP FCL :20-25TONS
2.40GP FCL: 25-26TONS
3.40HQ FCL:25 TONS or 26 TONS
The above quantity without pallet ,the goods will be sent within 7-15days after receiving your order.
Gongyi Yuying Refractory Co., Ltd FAQ
We can provide samples for free and charge shipping.
1. What is your MOQ?
Our product MOQ is 10 kg.
2. What kind of software package will we use?
25 kg plastic bags can also be customized.
3. What is the delivery time?
1*20 GP container takeS about 3 to 5 days.
4. Can you give me a discount?
Yes, we can negotiate
5. Can you give me advice based on the information we describe?
Of course, our mission is to provide you with professional services.
6. What is the shipping method?
Shipping, air, express. International train
7. What is the type of your company?
We are a Manufacturing & Trading Combo.
Gongyi Yuying Refractory Co. , Ltd. was built in May 2006 and covers an area of 10,000 m2, bauxite is abundant in the villages around our factory. Relying on the advantages of local resources, after more than 10 years of growth, has developed into a set of refractory raw materials firing, processing, material products sales of production-oriented enterprises. The existing production of 30,000 tons of environmental calcination equipment and natural gas furnace down three kilns; processing equipment has barmak, roller, Raymond Mill, annual output of about 50,000 tons. I plant business radiation throughout the country, the main products are: bauxite raw material, 50% -88% bauxite (aggregate, fine powder) , high aluminum powder, sintered mullite, Coke Gem, refractory clay powder, potassium feldspar and other refractory raw materials and finished products. Products are widely used in metallurgy, casting, steel plants, power, chemical and other industries.
The chemical composition of bauxite is mainly Al2O3, SiO2, Fe2O3, TO2, accounting for about 95% of the total composition, and the secondary components are CaO, MgO, K2O, Na20, S, MnO2 organic matter and trace components Ga, Ge, etc.
The refractory pre -production is the category of irregular refractory materials, also known as the prefabricated block of the pouring materials, and the irregular refractory prefabricated block.
Insulating high alumina refractory bricks mainly refer to refractory products with an aluminum content of more than 48%. They are also called lightweight high-alumina bricks or heat-insulating high-alumina bricks due to their advantages of low bulk density, light weight, and good heat insulation effect. . It is a kind of thermal insulation refractory brick commonly used in high temperature industrial kilns and thermal equipment.
High alumina brick is mainly used for lining of blast furnace, hot blast furnace, electric furnace roof, reverberatory furnace and rotary kiln. In addition, high alumina brick also widely used as open hearth regenerative lattice brick, pouring system with plug,such as nozzle brick.
Anti stripping high alumina bricks are referred to as anti-stripping bricks or anti-stripping refractory bricks. Anti-stripping high-alumina bricks are widely used in my country's new dry process kiln, Libore kiln and wet process kiln, including kiln door cover, rising flue, cooling zone, decomposition zone, safety belt, transition zone, coolant rear Walls and side walls and beams with curved ceilings.
Calcined alumina is a product obtained by calcining aluminum hydroxide at high temperature to partially or almost completely convert it into aAl2O2.
The Al2O3 content of clay heat Clay insulating refractory bricks is generally more than 40%, and the Fe2O3 content is less than 2.0-2.5%. The clinker in the ingredients is 65-85%, and the combined clay is 35-15%. The crushed bonded clay and the finely ground clinker are mixed and milled, and then mixed with the granular clinker to make semi-dry mud, high pressure molding, and sintering at about 1400 ℃, with good performance.
Refractory carstables for ladles is made of high-purity fused corundum as the main material, high-purity spinel is added to the matrix, and an appropriate amount of binder and admixture (dispersant, water reducing agent) are added.
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