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Wet processing process of high mud cupric oxide mine at high-cold area

A technology for alpine regions and copper oxide ore, which is applied in the directions of photography technology, photography auxiliary technology, and process efficiency improvement, can solve the problems of poor heap leaching permeability and low copper leaching rate, and achieves expansion of the scope of utilization and improvement of comprehensive utilization rate. Effect

Inactive Publication Date: 2009-06-17
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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Problems solved by technology

Solved the problems of poor heap leaching permeability and low copper leaching rate caused by fine-grained mud

Method used

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  • Wet processing process of high mud cupric oxide mine at high-cold area

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Embodiment 1

[0030] This new process is applied to copper oxide ore with high mud content in an alpine region of Tibet. The copper oxide minerals mainly include malachite, blue copper ore, a small amount of bile alum, black copper ore and red copper ore; gangue minerals are mainly clay minerals, Feldspar alterations, followed by sericite, hydromuscovite and carbonate minerals. Cu content in the ore is 2.50%, Fe 8.75%, Ca15.23%, Mg 5.12%, SiO 2 34.00%, Al 2 o 3 8.37%.

[0031] (1) Ore pretreatment

[0032] The raw ore is crushed and screened in two stages of jaw crushing and cone crushing. The ore with a grain size of +50~-80mm is directly sent to the stockyard for stacking, and the ore with a grain size of -50mm enters the ore washing system. This system has low cost and energy consumption. Low efficiency, high efficiency, after washing and grading, the sand ore with a grain size of +0.074mm (about 80%) is sent to the stockyard for piling, and the mud ore with a grain size of -0.074m...

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Abstract

The invention provides a wet copper extraction process used in high mud-content copper oxide ores of cold areas. The process comprises the following steps: crude ores are crushed and sieved, coarse fraction ores are sent to a storage yard for piling, fine fraction ores are sent to an ore washing system for washing and grading; placer ores are sent to the storage yard for the piling after washing the ores, and mud ores are sent to an agitation tank for agitation leaching; leaching solution which is obtained from heap leaching and agitation leaching processes is sent for extraction and stripping; stripping concentration solution is sent to an electrodeposition process, and a qualified cathode copper product is obtained; leached slag from the agitation leaching is neutralized and sent to a tailings reservoir for piling. The process has good permeability, fast copper leaching rate, and greatly improved copper leaching rate and leached copper yield per day by the grading and the heap leaching of the coarse fraction ores; and the copper leaching rate is improved and the ore utilization rate is greatly improved by the agitation leaching of minus 0.074mm size fraction ores. The method is applicable to the development and the application in the wet copper extraction process used in the high mud-content copper oxide ores of the cold areas, solves the difficult technical problems of poor bing permeability and slow copper leaching rate, widens the use range of copper ore resources and improves the comprehensive utilization rate of the copper.

Description

technical field [0001] The invention relates to a wet copper extraction process for copper oxide ore in alpine regions, especially for the high oxidation rate and high mud content of copper oxide ores in alpine regions, which result in poor permeability of the leaching heap and slow copper leaching rate Problem, put forward a utility model of ore processing technology. Background technique [0002] Although there are more than 60 million tons of copper reserves in my country, there are few rich ores, many lean ores, and low-grade ores. 20%), and with the decline of copper ore mining grade year by year, refractory ore is still increasing. If this part of copper ore resources can not be rationally utilized, it will inevitably cause a waste of resources. With the continuous mining of copper ore resources, the relative ease of beneficiation has decreased year by year, and the shortage of resources has intensified. Therefore, the applied research and development of low-grade cop...

Claims

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Application Information

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IPC IPC(8): C22B15/00C22B1/14C22B3/04C22B3/26C25C1/12
CPCY02P10/20
Inventor 黄松涛周峨温建康臧宏李岩胡祎罕娜武名麟罗已翀张兴勋赖长征刘丰成余晔
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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