Introduction about Lead-Zinc Beneficiation Process
According to different ore types, different beneficiation methods are selected, which requires different lead-zinc ore beneficiation equipment. Sulfide ores are usually flotation. Oxidized ore is beneficiated by flotation or gravity separation combined with flotation, or flotation after vulcanization roasting, or re-flotation after gravity separation with sulfuric acid treatment. For lead and zinc ores containing polymetals, magnetic - float, heavy - float, heavy - magnetic - float and other combinations are generally used
Process of Lead-Zinc Beneficiation Process
1. Grinding the argillaceous zinc oxide ore, so that the particle size of -0.1mm accounts for 50% to 80%;2. The refined pulp is spilt for the flotation of lead oxide;
3. The tailings of lead flotation are sent into the mixing bucket, the pulp concentration is controlled at 25 ~ 35%, the flotation agent is added, the pulp pH value is controlled at 9-11, and the mixing is 615min;
4. Lead and zinc ore dressing equipment -- the pulp is sent to the flotation tank for 1-3 fine grained roughing, the roughing concentrate is selected 1-3 times for each grade, the middle ore is selected for the next level, the pulp containing less than 16% mud is roughed for 6-8min, and the roughing concentrate is selected 1-3 times and 1-2min each time. The concentrate product is obtained, and the first selection and roughing of the middle ore are entered into desliming; The pulp containing 17-21% mud is roughed for 5-7min at the second stage, and the concentrate product is roughed for 1-3 times at 1-2min at each stage, and the first fine ore at the second stage and the middle ore at the second stage are deslimed. The slurry containing 22-26% mud is roughed for 4-6min at the third stage, and the roughed concentrate is roughed for 1-3 times for 1-2min at each stage to obtain the concentrate product. The middle ore of the third stage is once cleaned and the middle ore of the third stage is deslimed.
5. Lead and zinc ore dressing equipment - the 4 steps of fine flotation after the middling ore sent Φ150mm below
The hydrocyclone group or high-frequency fine sieve is used for desliming, the fine mud below -0.074mm is removed, the supplementary flotation agent is sent to control the pH value of the pulp 9-11, the mixing bucket is used to control the pulp concentration of 25-35%, and the mixing is carried out for 5-12min. 2, select lead-zinc ore equipment.
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