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type of product:
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Talc, talcum line HTP
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TALC LINE HTP, TYPES HTP1, HTP2
| 1. Description |
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| Highly pure type with very low content of heterogenous substances, with low Fe and very high whiteness. |
| 2. Mineralogical composition |
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| Talc |
% |
99-100 |
| Dolomite |
% |
<1 |
| Asbestos |
% |
0 |
| Silica |
% |
<0,5 |
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3. Physical properties |
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| Whiteness |
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HTP1 |
HTP2 |
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CIE L |
96,5 |
97 |
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a* |
-0,15 |
-0,15 |
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b* |
0,95 |
0,95 |
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Y
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92,0 |
92,5 |
| Particle size Sedigraph
5100 |
D(50)
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1,9 µm
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2
µm |
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D(90)
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5 µm
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7 µm |
| Oil consumption |
g/100g max
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65
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55 |
| Loose weight |
g/dm3
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300
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260 |
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pH |
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9 |
| Moisture |
% max |
0,4 |
| Density |
g/cm3 |
2,8 |
| Hardness |
Mohs |
1 |
| Ignition loss /1100 °C/ |
% |
5,7 |
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4. Chemical composition |
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Fe2O3 |
% |
0,7 |
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MgO |
% |
31 |
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CaO |
% |
0,5 |
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SiO2 |
% |
61,5 |
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5. Packing
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| 15 kg paper bags, on 900 kg pallets |
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TALCS |
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There
are many types of talcs. The name "talc" does not describes the
diversity of this mineral in nature. On one hand the talc is a pure
magnesium silicate and on the other hand it is a common name for rocks
containing more minerals. Pure talc has the following chemical
formula: Mg3[Si4O10(OH)2]. Theoretical chemical analysis has the
following values:
SiO2 63,5%
MgO 31,7%
H2O 4,8%
more on
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WHITENESS TO 93
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