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BLACK MICA
Mica piece size : 10mesh,16-40mesh
Mica, a layer-strcutured mineral ,is composed of potassium (K), aluminum (AI),magnesium (Mg),Iron(Fe) and lithium(Li).There are different categories of mica, including White Mica, Phlogopite, Biotite and Lepidolite (Lithia Mica) . White mica is widely used in industry and national defense because its elasticity, tenacity and insulativity. It is also acid and alkali resistant, and corrosion roof, which can be stripped, with low coefficient of expansion etc.
The Jinli Minerals have successfully developed another category of mica powder, which is smooth on the surface of flakes, thick in layer, regular in shape with strong adhesion and slipperiness, widely used in many Chinese and foreign prestigious enterprises.
Chemical Composition:
The chemical equation: KAI2 (Si3AIO10)(OH.F)2
Chemical |
SiO2 |
Al2O3 |
K2O |
Na2O |
MgO |
Fe2O3 |
TiO |
S+P |
CaO |
H2O |
Name |
Silicon |
Aluminium |
Potassium |
Sodium |
Magnesium |
lron |
Lilanium |
Sulphur + calcium |
Calcium |
Hydrogen |
Content(%) |
44-50 |
20-33 |
9-11 |
0.6-1.8 |
0.32-2 |
2-6 |
0.7-1.2 |
0.02-0.05 |
0.02-0.77 |
2.62 |
Physical Property:
Proportion |
Index of |
Brightness |
Moisture |
Sand |
Thickness |
Heat |
Loss in |
PH |
Oil |
Moh’s |
Trans- parency |
elastic coefficient 106 Pa |
280 |
1.6 |
45°-75° |
↓ 1% |
1% |
60 |
↑1000°C |
2.8-3% |
7-8 |
48-500g/100g |
2.5-4 |
71.7-87.5 |
1475.9-2092.7 (15050-21340 kg/cm2) |
In 25kg,50kg plastic woven bags.
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