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Normal temperature normal pressure ammonia infusion-extraction-electrodeposition-slag infusion flotation of copper oxide green ore

A technology of copper oxide ore and normal temperature, applied in the direction of improving process efficiency, etc., to achieve good operability and economy, reduce energy consumption, and reduce complexity

Inactive Publication Date: 2006-01-11
方建军 +2
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Problems solved by technology

There has never been a report on the ammonia leaching method of copper oxide ore raw ore at both normal pressure and normal temperature, and there is no report on the whole process of "normal temperature and pressure ammonia leaching of raw ore-extraction-electrodeposition-leaching slag flotation" of copper oxide ore.

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  • Normal temperature normal pressure ammonia infusion-extraction-electrodeposition-slag infusion flotation of copper oxide green ore

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Embodiment Construction

[0010] Further description will be made below in conjunction with the accompanying drawings.

[0011] Raw ore properties: The grade of raw ore is 1-1.5%, the oxidation rate is 55-65%, and the combination rate is 15-25%.

[0012] After crushing and grinding the raw ore, according to the nature of the ore sample, the fineness can reach -74μm, accounting for more than 50%, the liquid-solid ratio is 1:1, and the concentration of the leaching reagent is [NH 3 +CO 2 ]=2+0.5mol.L -1 , Ammonia leaching is carried out at a leaching temperature of 20°C and a leaching pressure of 750-760mmHg. The main object of the leaching operation is copper in copper oxide minerals that are easily leached. The leaching time is two hours. After leaching, solid-liquid separation and Wash to obtain cuproammonia leaching solution and leaching residue.

[0013] The cuproammonia leachate is extracted with lix84-I and lix55 ammoniacal extractants, using two-stage extraction and one-stage back-extraction p...

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Abstract

A process for extracting copper from copper oxide ore includes such steps as immersing in ammonia water in ordinary temp and ordinary pressure condition, extracting electrodeposition, and floatation. Its advantages are low consumption of energy and low cost. It is especially suitable for the low-grade copper oxide ore with high content of Ca and Mg.

Description

Technical field [0001] The invention belongs to a process method for extracting copper metal from ores by means of hydrometallurgy and flotation, in particular to a method for extracting copper from low-grade high-calcium magnesium copper oxide raw ore. Background technique [0002] Copper ore resources are important mineral resources related to the national economy and people's livelihood in my country, and are also one of the advantageous mineral resources in western my country. With the rapid advancement and development of my country's industrialization process, the consumption demand for copper mineral resources has increased sharply. At present, there is a serious shortage of copper ore resources available for industrial exploitation and utilization in my country, and a large amount of copper concentrate and scrap copper need to be imported every year. Among the proven copper ore resources in my country, a considerable part is low-grade a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B15/00C22B3/00
CPCY02P10/20
Inventor 方建军张亚南张文彬
Owner 方建军
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