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Altech gets kaolin-HPA process patent

ALTECH Chemicals has received a patent protecting its process of producing high purity alumina from kaolin – about four years after it filed it.

Noel Dyson
A rendering of Altech's proposed HPA plant.

A rendering of Altech's proposed HPA plant.

The grant of the patent acknowledges Altech's process for producing HPA from kaolin is unique and could pose problems to other HPA industry potential entrants that have publicised a proposed process similar...

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