Recovery process for associated metal elements in iron mines
A technology of metal elements and iron ore, which is applied in the field of recovery of associated metal elements in iron ore, can solve the problems of low utilization rate and difficult recovery of metal elements, and achieve the goals of saving production costs, increasing economic income of enterprises, and improving recovery efficiency Effect
Inactive Publication Date: 2015-03-04
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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Problems solved by technology
[0006] In order to solve the problems of difficult recovery and low utilization rate of associated metal elements such as copper, nickel, and cobalt in vanadium-titanium magnetite in Panxi area, the present invention provides a new process for recovering associated metal elements in iron ore by microbial leaching , this method is aimed at the iron ore associated with metal elements such as copper, nickel, cobalt, etc., before grinding - magnetic separation to recover iron, the process of biologically treating and recovering the associated copper, nickel, cobalt and other metal elements in the ore , the process is convenient for recovery, and can greatly improve the recovery rate of associated metals
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[0031] Such as figure 1 As shown, the principle flow of the bio-recovery process of associated metals in iron ore produced by the content of the present invention.
[0032] Firstly mine iron ore 1 by known method, then reclaim by this handicraft, its specific operation steps are as follows:
[0033] A. Send the mined iron ore to the crushing operation process 2. In the crushing process, the iron ore is crushed to less than 10mm; the crushed iron ore is transported to the anti-corrosion storage bin for dilute sulfuric acid lubrication. Wet 3, the specific process is the final stage when the iron ore is transported to the anti-corrosion storage bin along with the belt. There is a nozzle above the transport belt to continuously spray dilute sulfuric acid onto the surface of the iron ore. Most of the fine ore is wetted by dilute sulfuric acid. It will be attached to the surface of coarse ore particles or spontaneously bonded into agglomerates; the iron ore will be wetted by dilut...
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The invention relates to a recovery process for associated metal elements in iron mines. The process comprises the steps of: wetting crushed iron ores with dilute sulfuric acid; conducting Fe<3+> oxidation leaching treatment on the wet iron ores, and collecting the seepage liquid; when copper, nickel, cobalt and other metal ions in the seepage liquid reach a high concentration, carrying out metal recovery, and conveying the recovered residual liquid to a liquid adjustment trough; when concentrations of the copper, nickel and cobalt metal ions in the seepage liquid are low, letting the seepage liquid directly enter the liquid adjustment trough; subjecting the seepage liquid in the liquid adjustment trough to acidity adjustment and microbial culture solution adding operation, then pumping the seepage liquid into a biological oxidation reactor to undergo Fe<3+> regeneration; and heating the regenerated seepage liquid, then returning it to perform Fe<3+> oxidation leaching operation. The process provided in the invention makes use of the oxidation dissolution effect of an Fe<3+> containing dilute sulfuric acid solution on the assolicated copper, nickel and cobalt elements in iron ores, realizes rapid implementation of an oxidation reaction by controlling a high spraying liquid temperature, and can dissolve out the associated metals in the iron mines and recover them within a short time.
Description
technical field [0001] The invention relates to a method for recovering associated metals in iron ore, in particular to a recovery process for associated metal elements in iron ore. Background technique [0002] Traditionally, flotation beneficiation method is used for the recovery of associated metal elements in iron ore. Targeted flotation inhibitors are selected according to the composition content of the original iron ore, combined with specific flotation parameters, to recover low-grade copper, zinc, etc. Methods. [0003] For example, the Chinese patent document, the publication number is CN101906535A, and the publication date is December 08, 2010. The title of the invention is a method for recycling low-grade lead and zinc in pyrite, including the difficult lead-zinc-sulfur flotation separation. The low-pyrite ore is ground, lead-zinc-sulfur mixed flotation, and multiple selections to obtain high-grade sulfur concentrate containing lead and zinc. The concentrate is r...
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IPC IPC(8): C22B3/08C22B3/18
CPCY02P10/20
Inventor 舒荣波刘亚川陈炳炎熊述清程蓉
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI