Kaolin technical guides
Plain-language guides for overseas buyers: purification, iron removal, whiteness, hydrous vs calcined kaolin, applications and specification sheets.
Kaolin purification: from crude clay to an industrial grade
What is actually removed at each stage of a wet kaolin process, and why it shows up in your specification.
Read guide →Iron removal from kaolin with an electromagnetic slurry magnetic separator
Why weakly magnetic iron minerals need a high-gradient field, how the machine works, and what it can and cannot achieve.
Read guide →Kaolin whiteness and brightness: what the numbers mean
Brightness, whiteness and fired whiteness are not interchangeable. Here is how each is measured and which one your industry should specify.
Read guide →Hydrous vs calcined kaolin: how they differ and how to choose
Same mineral, different thermal history — and quite different behaviour in paint, paper, ceramics and plastics.
Read guide →Kaolin by industry: ceramics, paper, rubber, fiberglass and catalysts
The same mineral does five different jobs. These are the properties that matter in each.
Read guide →How to read a kaolin specification sheet
The parameters, the test methods behind them, and what to write into an RFQ so that quotes are comparable.
Read guide →Technical content is general industry information. Parameter values quoted on this site are typical references; final specifications are agreed per customer.
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