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Combined concentration and smelting method for mixed copper ore

A mixed copper ore dressing and smelting technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve environmental and unscientific problems, achieve short production cycle, high degree of automation, and good foam effect

Active Publication Date: 2014-03-26
罗光臣
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the industrial production process, clear water is used to classify the pulp for flotation. The flotation tailings must be separated from solid and liquid before entering the stirring and leaching process to reduce the amount of water entering the subsequent process. Otherwise, the subsequent process will cause water swelling, and a large amount of acidic wastewater needs to be treated. , which is neither scientific nor environmentally friendly

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  • Combined concentration and smelting method for mixed copper ore

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Embodiment Construction

[0012] Such as figure 1 Shown, the production process of the present invention is as follows:

[0013] The oxygen-sulfur mixed copper ore with an oxidation rate between 10% and 80% is subjected to flotation-leaching. The oxygen-sulfur mixed copper ore ore in this embodiment contains 0.96% copper, 3.2% calcium oxide, 0.78% magnesium oxide, and Silicon 66.8%, ferric oxide 2.7%. The copper sulfide minerals in the ore are mainly chalcocite and a small amount of bornite; the copper oxide minerals are mainly malachite, chrysocolla, and a small amount of cuprite. The ore is the sandstone copper mine in central Yunnan, Yunnan. The production scale is 100 tons of ore per day.

[0014] Oxygen-sulfur mixed copper ore is coarsely crushed by PEF400×600 jaw crusher and finely crushed by PEF250×750 jaw crusher into fine ore. The particle size of fine ore is controlled to -20mm, and the fine ore is put into the ore grinding bin. The fine ore is fed into the 1500×3000 ball mill by the ore ...

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Abstract

The invention discloses a combined concentration and smelting method for mixed copper ore. The method is a flotation-acid leaching combined concentration and smelting method which comprises the following steps of: separating sulphide ore from oxide and sulphide-mixed copper ore with the oxygenation efficiency of 10 to 80 percent to obtain copper ore concentrates; forbidding to add flotation activator Na2S of the copper oxide ore in the flotation, stirring and neutralizing initial ore pulp obtained by ore grinding and obtaining neutralized ore pulp, grading the neutralized ore pulp and obtaining the graded ore pulp, floating the graded ore pulp and obtaining the copper concentrate and tailings; carrying out acid leaching and agitation leaching on the floated tailings directly; and performing extraction electrowinning to obtain the cathode copper. The invention has the advantages that: the recovery rate of the oxide and sulphide-mixed copper ore can be greatly increased and can be increased by 10 to 40 percent generally. The method also has the advantages of saving the investment and production cost of flotation tailings solid-liquid separation process, preventing the copper oxide from entering the copper concentrate, along with simple and efficient process, low consumption of flotation agent, low consumption of process new water, reasonable process and high recovery rate.

Description

technical field [0001] The invention belongs to the technical field of copper ore flotation and copper ore leaching-extraction-electrodeposition hydrometallurgy. Background technique [0002] In copper mining and processing production, the copper ore mined by many mining enterprises has mixed copper ore. The mixed copper ore of the present invention refers to the oxygen-sulfur mixed copper ore with an oxidation rate of 10% to 80%, the copper ore with an oxidation rate of less than 10% is copper sulfide ore, and the copper ore with an oxidation rate greater than 80% is Pure oxide ores (the mineral processing technical specifications formulated in the 1950s in my country defined copper ores with an oxidation rate between 10 and 30% as oxygen-sulfur mixed copper ores, and copper ores with an oxidation rate of less than 10% as copper sulfide Copper ore with an oxidation rate greater than 30% is defined as oxidized ore copper, which is no longer suitable for the advancement of mod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03B1/00
Inventor 罗光臣向文之
Owner 罗光臣
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