METHOD OF CLARIFICATION OF WATER IN INDUSTRIALPLACER MINING Russian patent published in 2003 - IPC

FIELD: cleaning water; washing sands with fresh water at diamond and gold placer mining. SUBSTANCE: additional dam is erected at drainage canal mouth for flow of waste water at rate of 0.05-0.1 m/s. Flow-through electrolyzers mounted in water discharge canal are provided with parallel plate electrodes, 1-2 m long. Process is conducted at intensity of DC field in inter-electrode space of 2-2.5 kV/m created by DC source at voltage of 220-300 V. Proposed method ensures reduction of electrical potential of double layer of suspended clay particles without contamination of water with chemical agents. EFFECT: enhanced efficiency. 1 dwg, 1 ex