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| Minerals& Nonferrous metals and ferro alloys |
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Hainan Richin Minerals Co.,Ltd.authorized with the right to handle the import and export business,is specialized in producing,processing and exporting fused silica, silica sand ,silicon carbide and all kind of glass blocks.
We also deal with the export of the following products:minerals such as olivine sand, kaolin(china clay), brown fused alumina, white fused alumina, cenosphere, barite powder , vermiculite, mica, wollostonite , diatomite, sillimanite, china stone, potassium feldspar, albite, anhydrous sodium sulphate, sepiolite, electrode graphite etc;Chemical products such as calcium chloride,megnesium chloride ,zinc oxide,zinc sulfide,silica gel,disodium phosphate sodium tripoly phosphate etc;metals,tools and cast iron products;nonferrous metals and ferro alloys such as silicon metal,ferro silicon and manganese metal etc.and Building materals such as granlite,marbles and ceramic tiles, glass block and glass beads etc .
Our company is committed to meet and exceed the expectation of our customers.
Our mission is to be a reliable producer and exporter driven by technique ,strict quality control system and exemplary customer service .
Our goal is to excel in the markets we serve through high quality,in time delivery, low cost and excellant service. |
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BROWN ALUMINUM OXIDE(A) |
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| It is mainly used to grind metals of high-tensile strength such as steel,annealed malleable iron and hard bronze.It can also be used as high-class refractory raw materials. |
| Size &Chemical Composition |
| Size |
Chemical Composition(%,by weight) |
| AL2O3 |
CAO |
TiO2 |
| 0 -1mm |
≥94.5 |
≤0.3 |
1.5-3.8 |
| 1-3mm |
≥94.5 |
| 3-5mm |
≥94.5 |
| 5-8mm |
≥94.5 |
| -200mesh |
≥92.0 |
| -325mesh |
≥92.0 |
| F4-F80 |
95.0-97.5 |
| F90-F150 |
94.0-97.5 |
| F180-F220 |
93.0-97.5 |
| F220(finer) |
≥92.0 |
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Special requirement on size &chemical composition can also be satisfied. |
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PINK ALUMINUM OXIDE(PA)
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Size &Chemical Composition
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| Grit |
Chemical Composition(%,by weight) |
| AL2O3 |
Cr2O3 |
| F12-F90 |
≥98.5 |
0.15-0.40 |
| F100-F220 |
≥98.0 |
0.80-1.50 |
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It is mainly used to grind measuring and cutting tools etc,which demand low roughness on the surface .
Special requirement on size &chemical composition can also be satisfied. |
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COATED ABRASIVES
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Abrasive belt,abasive sleeves,abrasive paper,flap wheels etc.Mainly used for grinding,blending,deburring,smoothing,finishing and polishing of metals,non-metal,plastic,rubber wood surface,including the inside of holes and other hard-to-reach areas.Speacial requirment can be satisfied.
Special requirement on size &chemical composition can also be satisfied. |
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| WHITE ALUMINUM OXIDE（WA） |
 Special requirement on size &chemical composition can also be satisfied. |
It is mainly used to grind hardened alloy steel ,high-carbon steel and stainless steel .Abrasive powders of finer grits are preferred for precision grinding
Size &Chemical Composition
| Grit |
Chemical Composition(%,by weight) |
| AL2O3 |
Na2O |
| F12-F80 |
≥98.50 |
≤0.50 |
| F90-F150 |
≥98.50 |
≤0.60 |
| F180-F220 |
≥98.20 |
≤0.70 |
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VICE-WHITE ALUMINUM OXIDE(V-WA) |
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Vice-white Aluminum Oxide is akind of high-class Brown Aluminum Oxide.The name is from the chemical composition and physical properties which are close to White Aluminum Oxide .It is at almost same toughness with Brown Aluminum Oxide .It isan ideal of high grade refractory materials and Abrasives materials ,with bulk density ≥3.8g/cm3 ,and refractoriness≥1850℃ |
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Size & Chemical Composition
| Size |
Chemical Composition(%,by weight) |
| AL2O3 |
Na2O |
Fe2O3 |
| 0-50mm |
≥ 98.80 |
≤ 1.00 |
≤ 0.3 |
| 8-5mm |
≥ 98.00 |
≤ 1.00 |
≤ 0.3 |
| 5-3mm |
≥ 98.00 |
≤ 1.00 |
≤ 0.3 |
| 3-1mm |
≥ 98.00 |
≤ 1.00 |
≤ 0.3 |
| 1-0mm |
≥ 97.00 |
≤ 1.20 |
≤ 0.5 |
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BLACK SILICON CARBIDE(C) |
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Abrasives grade is used to grind cast iron,non-ferrous metals,rubber,leather,plastic,wood,mineral rocks etc;It is also widely used for refractory materials,metallurgical and ceramic materials. |
 Special requirement on size &chemical composition can also be satisfied. |
Abrasive Grade Grit & Chemical Composition(GB/T2480-1996)
| Grit |
Chemical Composition(%,by weight) |
| SIC |
F.C |
Fe2O3 |
| F12-F90 |
≥ 98.50 |
≤ 0.20 |
≤ 0.60 |
| F100-F150 |
≥ 98.00 |
≤ 0.30 |
≤0.80 |
| F180-F220 |
≥ 97.00 |
≤ 0.30 |
≤1.20 |
Refractory grade
| Size |
Chemical Composition(%,by weight) |
| SIC |
F.C |
Fe2O3 |
| 0-1mm |
≥ 97.00 |
≤ 0.40 |
≤ 0.50 |
| 1-3mm |
≥ 97.00 |
≤ 0.40 |
≤ 0.50 |
| 3-5mm |
≥ 97.00 |
≤ 0.40 |
≤ 0.50 |
| -200mesh |
≥ 97.00 |
≤ 0.50 |
≤ 0.80 |
| -325mesh |
≥ 97.00 |
≤ 0.50 |
≤1.00 |
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GREEN SILICON CARBIDE(GC) |
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| It is mainly used to grind hard and brittle metal ,non-ferrous metals like copper ,aluminum and magbesium ,and non-metallic materials such as optical glass ,ceramics ,etc. |
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Grit & Chemical Composition (GB/T2480-1996)
| Grit |
Chemical Composition(%,by weight) |
| SIC |
F.C |
Fe2O3 |
| F20-F90 |
≥ 99.0 |
≤ 0.20 |
≤ 0.20 |
| F100-F150 |
≥ 98.5 |
≤ 0.25 |
≤ 0.50 |
| F180-F220 |
≥ 97.5 |
≤ 0.25 |
≤ 0.70 |
Special requirement on size &chemical composition can also be satisfied. |
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