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Wollastonite
The formula of Wollastonite is
CaSiO3. The ideal chemical
specifications are as followed:
SSiO2 51.75%
CaO 48.25%
Heated-Swelling
Coefficient:6.5×10-6℃-1
Moh’s Hardness 4.5-5.0
Density 2.8
melting Point 1540℃
Refraction Index 1.62
The actual chemical specifications
are as followed:
SiO2 41-51%
CaO 38-47.5%
Fe2O3 0.35%max
MgO 1.5%max
Al2O3 1%max
S,P 0.04%maz |
Charactereatic of wollastontite：
Glaze grade |
| A? Grade |
SiO2≥49% |
CaO≥43% |
Fe2O3≤0.3% |
LOI≤2% |
whiteness≥90 |
size200－400目 |
| B? Grade |
SiO2≥49% |
CaO≥43% |
Fe2O3≤0.3% |
LOI≤3% |
whiteness≥90 |
size200－400目 |
Ceramic-Body Grade |
| |
SiO2≥41% |
CaO≥39% |
Fe2O3≤0.5% |
LOI≤8% |
? |
size60－200目
granule0－10mm |
Filler Grade |
| |
SiO2≥49% |
CaO≥43% |
Fe2O3≤0.5% |
LOI≤4.0% |
|
size200－2000目 |
Metallurgy Grade |
| A? Grade |
SiO2≥49% |
CaO≥43% |
Fe2O3≤1.0% |
LOI≤1.5% |
|
size100－400目 |
| B? Grade |
SiO2≥49% |
CaO≥43% |
Fe2O3≤1.0% |
LOI≤2.0% |
? |
size100－400目 |
Paint Grade |
| A? Grade |
SiO2≥49% |
CaO≥44% |
Fe2O3≤0.5% |
whiteness≥90 |
|
size325－2000目 |
| B? Grade |
SiO2≥30% |
CaO≥40% |
Fe2O3≤0.4% |
whiteness≥91 |
|
size325－2000目 |
Welding Grade |
| ? |
SiO2≥45% |
CaO≥40% |
Fe2O3≤0.8% |
S≤0.04% |
P≤0.04% |
size60－325目 |
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Exceed the detailed products、 series
We use the micronized jet mills imported from abroad to produce all kinds of minerals powder from 600 mesh to 2500 mesh.. The retention of these products
is 8%min. OurProducts have earned good reputation both inside and outside.
The micronized products are mainly used in high-class panints industry,
paper-making industry, engineering plastics industry, glaze, etc. to replace talc,
ZnO to reduce the cost.
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| Series Products of Acicular Wollastonite Powder Dadingshan brand series products of acicular wollastonite powder with high aspect ratio are processed with advanced technics and equipments, Since the products have high aspect ratio, good reinforcement and sealing property, they are used to replace asbestos, fiber talc, glass fiber. These series products also are used in high polymer engineering plastics, special plastics and chemical industry, friction materials, building materials and so on . |
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| 电镜下的针状硅灰石粉 |
| ? |
G—Series
|
H-Series
|
hG-Series |
| G-60F |
G-100F |
G-200F |
G-300F |
H-600F |
H-800F |
H-1250F |
H-1800F |
HG-10 |
HG-20 |
| chemical Analysis |
SiO2
|
≧49 |
≧49
|
≧50 |
| CaO |
≧44
|
≧44
|
≧45 |
| Fe2O3 |
≦0.3
|
≦0.3
|
≦0.3 |
| LOI |
≦3
|
≦3 |
≦2 |
Sendimctation
|
≈60 |
≈80 |
≈90 |
≈90
|
≧85 |
≧100 |
≧120 |
≧140 |
≧84.5 |
≧87 |
Bulk Density
|
≦0.5 |
≦0.3 |
≦0.25 |
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