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| Commercial
Economics |
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| PREMIUM GRADE
CRITERIA |
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| A high priced Kaolin has : |
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| v | Superior
Brightness |
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| v | Superior
Whiteness |
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| v | Desired
particle size |
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| v | High
opacity (good hiding power) |
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| v | Chemical
purity |
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| v | Low
viscosity (for paper markets) |
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| v | Other
properties - abrasivity, conductivity, etc |
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