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Smelting method of natural copper mine

A smelting method, a natural technology, applied in the smelting field of natural copper mines, to achieve the effect of less environmental pollution, less emission, and simple process flow

Active Publication Date: 2014-02-05
中矿(麻阳)矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a smelting method suitable for this kind of natural copper ore in view of the problem that there is no separate smelting method suitable for natural copper ore in which copper exists in the form of single metal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Copper concentrate, iron slag, lime and purchased flue dust are respectively transported to the mixer mill with parts by weight of 100, 40, 3 and 7 by a belt conveyor, and are fully pulverized and mixed uniformly to obtain the initial material; The initial material is transferred to the ball making machine, so that all materials are evenly bonded together to obtain spherical particles with a diameter of 35mm; the spherical particles are transported to the melting furnace by a belt conveyor, and after dehydration and drying, the carbonic acid in the spherical particles Salt and sulfate are decomposed, and further, in the high temperature zone of the smelting furnace at 1350°C, due to the incomplete combustion of coke, various materials of spherical particles are melted and reduced, and flue gas and coarse slag containing part of copper are respectively obtained after smelting for 3 hours and the first part of crude copper; the dust collection device is used to collect the...

Embodiment 2

[0033] Transport the copper concentrate, iron slag and lime with parts by weight of 102, 40 and 2 respectively to the mixer mill through the belt conveyor, pulverize them thoroughly and mix them evenly to obtain the initial material; transfer the initial material to the ball making machine In the process, the materials are evenly bonded together to obtain spherical particles with a diameter of 38 mm; the spherical particles are transported to the melting furnace by a belt conveyor, and after dehydration and drying, the carbonate and sulfate in the spherical particles are decomposed, and further Specifically, in the high temperature zone of the smelting furnace at 1300°C, due to the incomplete combustion of coke, various materials of spherical particles are melted and reduced, and after 3.5 hours of smelting, flue gas, coarse slag containing part of copper and the first part of blister copper are obtained respectively; The flue gas is collected by a dust collection device, and t...

Embodiment 3

[0035] Copper concentrate, iron slag, lime and purchased flue dust that are respectively 100, 38, 4 and 6 parts by weight are transported to the mixer mill by a belt conveyor, fully pulverized and mixed uniformly to obtain the initial material; The initial material is transferred into the ball making machine, so that all materials are evenly bonded together to obtain spherical particles with a diameter of 45 mm; the spherical particles are transported to the melting furnace by a belt conveyor, and after dehydration and drying, the carbonic acid in the spherical particles Salt and sulfate are decomposed, and further, in the high temperature zone of the smelting furnace at 1300 ° C, due to the incomplete combustion of coke, various materials of spherical particles are melted and reduced, and after smelting for 2.5 hours, flue gas, coarse slag and the first part are obtained respectively Blister copper: transfer the coarse slag into the electric heating front bed, heat and clarify...

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Abstract

The invention discloses a smelting method of natural copper mine. According to weight, 95-105 parts of copper concentrate, 35-45 parts of iron-bearing slag, 1-5 parts of lime and 0-10 parts of soot are smashed and mixed to prepare particles. The particles are smelted through reduction at high temperature and separated naturally to obtain smoke, rough slag and a first part of crude copper. The temperature of the crude copper is kept at the temperature of 1150-1250 DEG C, and the crude copper is cleared to be separated naturally to obtain slag, copper matte and a second part of crude copper, and the first part of crude copper and the second part of crude copper are combined to obtain total crude copper. The total crude copper is smelted, ventilated and oxidized, and silica is added to make slag to obtain copper oxide and remained slag. The remained slag is separated, a reduction agent is added, and the copper oxide is fully reduced and smelted to obtain anode copper. The anode copper is used as an anode, an electrolytic copper plate is used as a cathode, and electrolytic copper is obtained after fully electrolysis in acidic electrolysis liquid. The technological process is simple, low in production cost and small in environment pollution. The obtained electrolytic copper is good in quality, copper content is 99.95%, and comprehensive recovery rate is 96%.

Description

technical field [0001] The invention relates to a method for smelting natural copper ore, more specifically, to a method for smelting natural copper ore in which copper exists in the form of monomer metal. Background technique [0002] Mayang Copper Mine is a relatively unique natural copper mine in China. The copper in it is different from the copper in common copper mines in the form of sulfide, mainly in the form of single metal copper; the content of sulfur and iron in copper mines is also high. very low. The current copper ore smelting process is mainly aimed at common copper ores in which copper exists in the form of sulfide, and there is no separate smelting method suitable for natural copper ores in which copper exists in the form of single metal. If the traditional process for common copper ore is used to smelt Mayang copper ore, the copper content in the waste slag during the smelting process is high, and the copper recovery rate of the whole process is low. Con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B15/00C22B5/02C22B1/14C25C1/12
CPCY02P10/20
Inventor 郑能欢姚齐林李代辉
Owner 中矿(麻阳)矿业有限公司
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