1 Carrier flotation process makes it possible to select fine-grained kaolin . The advantage is that the kinetic energy of the particles is increased, but the consumption of the agent is high, and the use and processing cost of the carrier mineral is further increased.
â‘¡ without carrier by means of activation of a multivalent cation, can be suspended so anatase, but with a fatty acid flotation collector consumption than other industrial minerals, which may be due to the large surface area of the particles.
3 High shear agitation plays a two-fold role in the flotation. One is to dissociate the anatase from the kaolinite, and the other is to induce shear flocculation between the anatase particles covered by the collector.
4 High-gradient magnetic separation technology has greatly changed the surface of the kaolin industry. Especially the vibration high-gradient magnetic separation can effectively remove the iron- titanium impurities in kaolin, but has little effect on the particle size composition and physical and chemical properties of the product. Produce high quality kaolin products. Dry high gradient magnetic separation treatment of hard kaolin can eliminate product dehydration and reduce product loss, which is suitable for dry and water-free areas. The superconducting high gradient magnetic separator has low energy consumption and large processing capacity. The product purity is high and will be widely used in the kaolin industry.
5 oxidative bleaching and microbial treatment of kaolin products can greatly improve product quality.
6 electrophoresis / electroosmosis dehydration process to increase the slurry concentration to about 70%, and the production cost is much lower than spray drying.
The combination of 7 kinds of operations and the final product are the main features of the kaolin dressing process.
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