Backwater utilizing method for ore-dressing of polymetallic ore
A polymetallic ore and metal technology, applied in chemical instruments and methods, flotation, energy and wastewater treatment, etc., can solve the problems of waste of resources, affecting the quality of beneficiation, loss of metals, etc., to achieve easy operation and control, avoid secondary pollution, The effect of small impact on the process
Inactive Publication Date: 2010-04-21
CINF ENG CO LTD
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Problems solved by technology
The metal that should be inhibited is activated into other metal products, resulting in the loss of the metal
[0005] 2. The product is unqualified
The activated metal enters into other products, resulting in the mutual inclusion in the product will exceed the relevant national product standards, and in serious cases, no qualified concentrate will be produced
[0006] For the heavy metal wastewater produced by the mineral processing plant, the method of treating the total tailings is currently used. The wastewater of the total tailings often contains a variety of mineral processing agents.
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[0012] Copper-lead-zinc-molybdenum raw ore is crushed and ground to a particle size of 70%-200 mesh and enters the copper-lead-molybdenum mixed flotation system. The system consists of one coarse, three fine and three sweeps to produce copper, lead, molybdenum mixed concentrate and tailings. The former will enter the copper-lead separation operation, and the latter will enter the zinc selection system. The copper-lead mixed concentrate and tailings are respectively densely dehydrated, and the generated water is returned to the upper-level mixed flotation system for reuse. The concentrate produced by the zinc flotation system is zinc concentrate, and the tailings are the final tailings, which are also dehydrated separately, and the resulting backwater is returned to the zinc flotation system. By analogy, the copper-lead-molybdenum mixed concentrate enters the copper-molybdenum and lead separation system to produce copper-molybdenum concentrate and lead concentrate, which are de...
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The technical scheme of the invention provides a backwater utilizing method for ore-dressing of a polymetallic ore, which comprises the following steps: selecting mixed concentrate of polymetallic ore orderly by adopting step-by-step mixed flotation; and performing separating flotation on the mixed concentrate to obtain the concentrate of a single ore. Intermediate products, concentrate and tailings generated by the mixed flotation of the polymetallic ore are subjected to dehydration; and the generated backwater is returned to a flotation operation used for a single metal ore. The backwater utilizing method of the technical scheme of the invention is suitable for the ore-dressing process of the polymetallic ore, particularly for the ore-dressing process of the polymetallic ore which is capable of obtaining a single metal ore by the step-by-step flotation. The backwater utilizing method for the ore-dressing of the polymetallic ore can improve an ore-dressing index to the maximum and ensures qualified products, meets relative policies of environment protection and pollution prevention of the State Environmental Protection Administration while enabling an enterprise to acquire good economic benefits, so the method has very practical significance for the development of a mine of which the ore properties are complex.
Description
technical field [0001] The invention relates to a method for utilizing backwater of ore dressing, in particular to a method for utilizing backwater of polymetallic ore dressing. Background technique [0002] According to the National Environmental Protection Agency Huanfa (2005) No. 109 document, "Mine Ecological Environmental Protection and Pollution Prevention and Control Technology Policy" in the development of mineral resources should implement "equal attention to pollution prevention and ecological environmental protection, ecological environmental protection and ecological construction As well as the guidelines of prevention first, combination of prevention and control, process control, and comprehensive management, it is required that the water reuse rate of the new, expanded, and reconstructed non-ferrous metal system beneficiation should reach more than 75%. [0003] It is very difficult for the polymetallic beneficiation process to achieve 75% of the return water u...
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Login to view more IPC IPC(8): B03D1/00C02F1/00
CPCY02W10/37
Inventor 张敏陈典助
Owner CINF ENG CO LTD
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