Large-scale superconducting separator for Kaolin processing
- Eriez Magnetics, Erie, PA (US)
Currently, high gradient magnetic separators (HGMSs) are used almost exclusively by the clay processing industry, particularly in producing an extremely white kaolin for the paper, coatings and rubber industries where a bright additive is desirable. As mined, the clay is a light cream color-not white. Many of these impurities can be removed chemically using a reducing agent such as sodium hydrosulfite in low pH, sulfuric acid, and alum. High purity, however, can be obtained by removing trace amounts of paramagnetic particles (100% finer than 2 {mu}m). This is accomplished by separating these particles from 28 wt% kaolin in a water slurry retaining them on magnetic wool, which is then periodically regenerated.
- OSTI ID:
- 6961993
- Journal Information:
- Chemical Engineering Progress; (USA), Vol. 86:1; ISSN 0009-2495
- Country of Publication:
- United States
- Language:
- English
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