British ECC company kaolin mineral processing purification process and typical equipment!

Vovilin Bochin Company (ECLP) kaolin mineral processing purification process and typical equipment. The company is the largest subsidiary of the UK's ECC company, with its main kaolin mines in St Austell, Comwall, England, and Lee Moor, Devon. Two places.

1. Kaolin ore properties

The company's two mining areas are hydrothermally altered kaolin deposits. The ore industry type is sandy. The kaolinite content is about 20%, and the gangue minerals are mainly quartz , mica and a small amount of unaltered feldspar , and rare iron minerals.

2. Kaolin mineral processing process

The company's typical principle of kaolin mineral processing: rough selection using a spiral classifier and hydrocyclone to classify a large amount of coarse sand. The selection is grading by Φ42m sedimentation tank, Φ14-20m classification tank and centrifugal classifier, and the particle size distribution is strictly controlled. According to the quality characteristics of the mine ore and the quality requirements of the mines, chemical bleaching, high gradient magnetic separation or stripping operations can be adopted to obtain different grades of products.

3. Typical equipment for mineral processing

Spiral classifier: sorghum type Φ1270mm;

Hydrocyclone: ​​Φ355mm;

Selected pool (ie 耙 type thickener): Φ14-20m, three-stage series, size reduction step by step, secondary selected concentrate: -53μm 99.98%, -10μm 85%, -2μm 45%; pulp concentration: ρ =1.04-1.06%; sweeping tailings: +2μm 98%;

Grinding and stripping machine: horizontal octagonal shell with built-in mixing blades and fine grinding media;

Horizontal spiral centrifugal classifier: DYNOCONE type (made by International Fuel Company), fine particle size: -2μm 75%, -10μm 99.5%; coarse grain size: -53μm 99.99%;

Disc centrifugal dewatering machine: ALFA-LAVAL type (made in Sweden);

Strong magnetic separator: PEM-84 high gradient magnetic separator (made by American Pacific Electric Company), the Fe2O3 content decreased from 0.9% to 0.6%, and the K2O content decreased from 1.4% to 1.2%;

Dry machine: Buell airflow dryer, D=9m, h=9-10.5m.