$Raw Materials for Refractory:Chinese Calcined Bauxite with the Lowest Price System 1$
$Raw Materials for Refractory:Chinese Calcined Bauxite with the Lowest Price System 2$
$Raw Materials for Refractory:Chinese Calcined Bauxite with the Lowest Price System 3$

$Raw Materials for Refractory:Chinese Calcined Bauxite with the Lowest Price$

$Raw Materials for Refractory:Chinese Calcined Bauxite with the Lowest Price System 1$

$Raw Materials for Refractory:Chinese Calcined Bauxite with the Lowest Price System 2$

$Raw Materials for Refractory:Chinese Calcined Bauxite with the Lowest Price System 3$

Raw Materials for Refractory:Chinese Calcined Bauxite with the Lowest Price

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 0 m.t.

Supply Capability:: 30000 m.t./month

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Items	Al2O3	Fe2O3	B.D.	K2O+Na2O	CaO+Mgo	TiO2
88	88%min	1.5%max	3.25min	0.25%max	0.4%max	3.8%max
87	87%min	1.6%max	3.20min	0.25%max	0.4%max	3.8%max
86	86%min	1.8%max	3.15min	0.3%max	0.5%max	4%max
85	85%min	2.0%max	3.10min	0.3%max	0.5%max	4%max
83	83%min	2.0%max	3.05min	0.3%max	0.5%max	4%max
80	80%min	2.0%max	3.0min	0.3%max	0.5%max	4%max
78	75-78%	2.0%max	2.8-2.9	0.3%max	0.5%max	4%max

Quick Details

Place of Origin:	Shanxi, China (Mainland)	Shape:	Block	Material:	Alumina Block
SiO2 Content (%):	5-19%	Al2O3 Content (%):	75-89%	Refractoriness (Degree):	Common (1580°< Refractoriness< 1770°)
CrO Content (%):	None	SiC Content (%):	None	Model Number:	78,80,83,85,86,87,88,89
Brand Name:	CNBM	Fe2O3:	2%max	K2O+Na2O:	0.25-0.4%
CaO+MgO:	0.4-0.6%	Bulk Density:	2.8-3.30

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Q:Which kind of refractory floor is easy to use? ?: Recommend: Yong Wei fireproof board Henan Yong Wei Anfang Co., Ltd., located in Qinbei industrial agglomeration area, Qinyang City, Henan Province, was founded in 1995. It strated from the initial one fire decorative plate production line. After years of development, it has become the biggest fireproof decorative board production base with 25 fireproof board production lines.

Q:Refractory factory grinding brick dust harmful to the body?: Therefore, in the workshop work must pay attention to do their own protection.

Q:What refractory material does cupola lining use?: In order to improve the service life of the lower wall and the bottom leather, dense and high alumina brick can be used for masonry. The front furnace is composed of the bottom, the wall and the top. The top of the furnace is vaulted or hanging flat roof. The front furnace body is usually made of clay brick and high alumina brick, and the bottom work floor is rammed with ramming material. The material is the same as that of cupola furnace. The bridge and the front guard taphole, slag hole and other parts due to erosion by high temperature molten iron and slag erosion, lower service life, frequent repairs. Large blast furnace adopts hot blast or oxygen enriched blast, which has higher temperature and higher production capacity... The damage is faster, and it is hard to maintain production by using clay brick or high alumina brick. Should be used aluminum, carbon or corundum refractory silicon carbide castables pouring or tamping, so that the integrity of good, high strength, corrosion resistance, and therefore significantly improved service life, generally up to one year or so. Refractory materials, including chimneys and spark traps, are used in other parts of the cupola. The chimney and the cupola shaft directly connected with the shell made of steel plate, lined with ordinary clay brick, can also be used ordinary refractory castable pouring. The chimney is provided with a furnace heat exchanger, which can preheat the air to 300~500 DEG C, and the spark collector is used for catching the hot coke and dust particles brought out in the flue gas. The chimney at the top of the reflector (cover) by plate welding, can also be used to cast iron, its lining refractory coating or spraying paint.

Q:What are the specifications of refractory kilns ?: Since the coefficient of thermal expansion of the basic brick is large, expansion rate is about 1-1.2% under 1000 ℃ The literature indicates that: "Under the condition that the temperature was raised to 1000 ℃ and stress in brick lining is relaxed, 300N / mm2 of compressive stress can be produced, which is equals to ten times structural strength of ordinary magnesia chrome brick, six times structural strength of magnesia chrome brick, dolomite brick and spinel brick, so any basic bricks can not afford, " the paper also pointed out that " heat expansion rate of kiln body can partially compensate for expansion rate of the inner lining of 0.2% -0.4%, which is 1/3 of thermal expansion rate of ordinary magnesia-chrome brick under 1000 ℃. However, it occurs under thermal equilibrium conditions. Thereby, the kiln should be dried slowly, allowing the temperature of the kiln body to go up slowly, thus the role of compensation can be played. " This is the key to using the basic brick. " Procedures of refractory for cement kiln "( tentative one) has clearly regulated baking and cooling of the kiln in the first section of the fifth chapters. In the heating process, in particular when the temperature is in the range of 300-1000 ℃, heating rate must be less than 60 ℃ / h. This is very clear in theory but it is difficult to implement.

Q:How about the prospect of refractory material?: is developing well. Many plants are required t o use fireproofing materials.

Q:Which schools are the best schools in the world for learning knowledge about refractories?: If you search on a worldwide scale, I might say you are ambitious!!! This major becomes an unpopular one and you must have to embark on graduate and PhD to specialize in it provided that you want to go abroad for further study. Wuhan University of Science and Technology may be the best school in this field with its close relatinship with many refractory manufacture factories across the country. Henan University of Science and Technology is also advisable in terms of this major, which probably promise you a job. Other universities in this regard are not quite familiar to me. You raised these questions, which shows that you are a layman to this major or not quite familiar with this major. If you have any questions, you can resort to me if I can.

Q:About the use of horseshoe glass kiln refractories: the lower portion of advanced clay brick, the lower portion of magnesia-chrome brick arch - high-purity silica brick; flue - clay brick; breast wall--33 # fused zirconia corundum brick (with shrinkage); fused zirconia bottom --33 # fused zirconia corundum brick (with shrinkage); regenerative chamber- the upper part of sintered magnesia-chrome brick, cooling section 33 # electric?smelting no shrinkage fused zirconia corundum brick; the wall - the melting section 41 # no shrinkage fused zirconia corundum brick (including 41% of zirconium; the lattice- superstructure of high purity magnesia brick, the same below); small stove --33 # fused zirconia corundum brick (with shrinkage). It can be said that it is the maximum configuration, if the funds is limited it can be downshift appropriately.

Q:What kind of fireproof material is used for steel structure?: Brushing or spraying the coating on the surface of steel structure to prevent burning and insulate heat. It also prevents undermining the rolled steel from rapid temperature elevation and avoid collapse of building for lose of supporting capacities. Agglutination material are classified as fireproof coatings for steel structures which is solvent based and Water-based steel structure fire retardant coatings. Fireproof coatings for steel structures which is solvent based are subdivided into fireproof coatings for steel structures which is solvent based with low benzene content and fireproof coatings for steel structures which is solvent based with high benzene content (TVOC≤600g / L, benzene ≤5g / kg). It can be divided by thickness. ultra-thin (CB) fireproof coatings (coating thickness ≤3mm), thin (B) fireproof coatings (3mm & amp; lt; coating thickness ≤7mm) and thick (H) steel structure fire retardant coating (7 mm & amp; lt; coating thickness ≤45㎜). The coating can be divided into non-intumescent fire retardant coating and intumescent fire retardant coating according to the the expansion properties. Slim (CB) and fire-resistant coating for steel structure and thin(B) fireproof coatings is intumescent fire retardant coating, thick (H) fire-resistant coating for steel structure is intumescent fire retardant coating. Unprotected steel structure has fire endurance of 0.25 hours.

Q:Why does refractory need to add coarse firstly and then add fine aggregate?: Oh, adding coarse aggregate first is to select good material to make aggregate, and the rest cna be made into fine aggregate. Because if it contains impurities, once being sintered, the appearance will be affected, but fine aggregate does not have this impact.

Q:how to classify the fireproofing material levels A1 A2 B1?: their classification is shown specifically in Fireproof? Specification of Building Interior Decoration?Design GB 50222-95 appendix A, flammability,inflammability materials, flame retardency, noninflammability: combustion performance of A, B3, B2, B1 materials are divided into

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