Product Details

Brown Fused Alumina is fused and crystallized under the high temperature of above 2250℃ with high quality abrasive bauxite as raw material and matched by the carbon material and scrap iron.

1.For Abrasive: Brown Fused Alumina can produce ceramic grinding wheel, resinoid grinding wheel, grinding stone, grinding block, sand paper, sand cloth, sand belt, polishing wax, abrasive agent, abrasive paste, coating and so on.

Chemical composition:

Purpose	Specification		Chemical composition%				Magnetic material content%
			Al2O3	Fe2O3	SiO2	TiO2
For abrasive	F	4#—80#	≥95	≤0.2	≤1.5	≤3.0	≤0.03
		90#—150#	≥94				≤0.03
		180#—240#	≥93.5	≤0.3	≤1.5	≤3.5	≤0.03
	P	4#—80#	≥95.0	≤0.2	≤1.5	≤3.0	≤0.03
		90#—150#	≥94.0				≤0.03
		180#—240#	≥93.5	≤0.3	≤1.5	≤3.5	≤0.03

Physical Properties:

Color	Dark Brown
Crystal Form	Alpha-alumina trigonal system
Hardness	9.0 Mohs scale
Melting Temperature	About 2050 ℃
Maximum Use Temperature	1800℃
True Density(g/cm3)	≥3.90
Magnetic Materia	0.015%

2.For Refractory: It is mainly used for abrasion and high temperature resistant, inoxidizable aggregate and filling of shaped and monolithic refractory in steel metallurgy, various industrial stoves, electric furnace and so on.

Purpose	Specification		Chemical composition(%)				Magnetic material content(%)
Purpose	Specification		Al2O3	Fe2O3	SiO2	TiO2	Magnetic material content(%)
For refractory	Size sand	0-1mm 1-3mm 3-5mm 5-8mm 8-12mm	95 Min	0.3 Max	1.5 Max	3.0 Max	—
	Size sand	0-3mm 0-5mm 0-10mm 0-25mm	95.5Min	0.3 Max	1.5Max	3.0Max	—
	Fine powder	180#-0 240#-0 320#-0	93.5 Min	0.5 Max	1.5 Max	3.0 Max	—

Physical Properties
Colour	True Density	Mohs Hardness	Melting Temperature	Crystal System	Refractory Temperature
Brown	3.90g/cm3	9.0	2050℃	trigonal system	1900℃

3.for Sandblasting: It is mainly used for various material workpieces to decontaminate, derusting, prevent corrosion, remove oxide skin, light−decorate , process pattern effect and so on.

There are three factors the decide the effect of Brown Fused Alumina for sand blasting :
1.The grinding ability: the higher grinding ability ,the better for sand blasting.
2.The bulk density: the higher bulk density ,the better for sand blasting.
3.The dust: the lower dust, the better for sand blasting.

Brown Fused Alumina with high bulk density and air cleaned,the quality of this kind of Brown Fused Alumina is very excellent for sandblasting.

Data Sheet:

Purpose	Specification		Chemical composition(%)				Magnetic material content(%)
			Al2O3	Fe2O3	SiO2	TiO2
For sandblasting	F	4#—80#	95.0 Min	0.2 Max	1.5 Max	3.0 Max	0.05 Max
		90#—150#	94.0 Min				0.05 Max
		180#—240#	93.5 Min	0.3 Max	1.5 Max	3.5 Max	0.05 Max

Physical Properties:

Color	Brown
Crystal Form	Alpha-alumina trigonal system
Hardness	9.0 Mohs scale
Melting Temperature	About 2050 ℃
Maximum Use Temperature	1800℃
True Density(g/cm3)	≥3.90
Magnetic Materia	0.01%

4.for Precision Casting: Brown fused alumina melt film precision casting sand is the latest corundum products self−developed by RuiShi Company to meet the market demands. Based on the production of the brown fused alumina and with special technology, it is produced by the careful organization of the researchers. The quality has reached the advanced level of similar foreign products through laboratory tests and production in practice of dozens of casting enterprises. And some performances of it can be adjusted or showcased according to the customers’ requirement. The precision casting sand of RuiShi Brand has high refractoriness, low thermal expansion coefficient, good thermal stability, strong air permeability, high intensity, easy to shell, high casting finish.It can substitute Zirconia sand (powder) its price is only half of zirconia sand (powder), and the recovery ratio is high as well. It can be mainly applied to the melt films and silicasol technology of jewelry, handicrafts, stainless steel products, watches, glasses, aluminum die casting industries, and can be processed in line with the demands of the clients.

Purpose	Specification	Chemical Composition(%)				Magnetic Content(%)
Purpose	Specification	Al2O3	Fe2O3	SiO2	TiO2	Magnetic Content(%)
For Precision Casting	F60-F80	≥95	≤0.3	≤1.5	≤3.0	≤0.05
	F70-F90	≥94	≤0.3	≤1.5	≤3.0	≤0.05
	F100-F120	≥93	≤0.3	≤1.5	≤3.5	≤0.05
	0-320#	≥93.5	≤0.3	≤1.5	≤3.5	≤0.05

5.for Abrasion resistance ground: This kind of corundum is mainly used for non−slip of airport and road, chemical factory board paving and surface decorated material of dam.

Company Information

Henan Ruishi Investment Group Co., Ltd., formerly known as Yichuan Ruishi Abrasives Co., Ltd., was founded in 1992. The company mainly produces all kinds of abrasives, special refractories and metallurgical materials. After nearly 20 years of rapid development, the company has developed into a stock−holding company with seven wholly−owned subsidiaries, including a bauxite calcination plant, a smelter plant, a sand−making plant, a new energy solar−powered wire cutting plant, a renewable resource company, and an international trading company. The company has the rights for import and export; it is also one of the top−100 export bases in Henan Province. The production base of the group covers an area of 440 mu. It has 350 employees, and a registered capital of 72 million yuan; it is equipped with six domestic first−class large−scale 3600KVA/360KVA high−temperature furnaces, and six automatic Barmac production lines; in order to ensure the stability of raw materials, the company built 4 shaft kilns, to be dedicated to firing first−grade alumina blocks used for smelting, which has an annual production capacity of up to 150,000 tons. The new−type energy−saving composite corundum developed by the company has a production capacity that ranks first in the industry worldwide. The products took the lead in the industry in passing the ISO9001: 2000 Quality Management System certification, which are exported to more than 20 countries and regions, including the United States, Russia, Japan, and Korea. In 2010, the total assets of the Group reached 159.09 million yuan; the sales income was up to 256.33 million yuan, and the taxes amounted to 24.93 million yuan, having created good social and economic benefits and made outstanding contributions to the society.