Shaft furnace and rotary furnace combined type fire refining process for raw red copper

A pyro-refining and rotary technology, applied in the field of non-ferrous metal smelting, can solve the problems of low utilization rate of shaft furnace, high fuel consumption, increased energy consumption, etc., and achieve the goal of ensuring continuity, increasing large-scale, and improving energy utilization rate Effect

Inactive Publication Date: 2012-08-15
JIANGXI RARE EARTH & RARE METALS TUNGSTEN GRP HLDG CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0013] The existing fire refining technology has the following problems: 1) the fuel consumption of the fixed reverberatory furnace and the tilting refining furnace are large, the thermal efficiency is low (energy utilization rate 15-40%), and the working conditions are poor; 2) shaft furnace-fixed The utilization rate of the shaft furnace in the joint refining process of the vertical reverberatory furnace is low, and it cannot be continuously and efficiently produced; 3) The holding furnace set in the combined refining process of the shaft furnace-tilting refining furnace-holding furnace increases energy consumption

Method used

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  • Shaft furnace and rotary furnace combined type fire refining process for raw red copper
  • Shaft furnace and rotary furnace combined type fire refining process for raw red copper

Examples

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Embodiment

[0044] The fire refining of the project with an annual output of 220,000 tons of copper wire blanks using red copper as raw material, and the method of transporting red copper liquid in the launder, the process steps are as follows:

[0045] ① Pre-treat the raw materials of red copper, remove the inclusions as much as possible, and the processing length or block size should be suitable for loading into the feeder.

[0046] ②Use a forklift to load the red miscellaneous copper raw materials into the feeder type feeder.

[0047] ③ The feeder-type feeder feeds the red miscellaneous copper charge into the shaft furnace with a production capacity of 35t / h.

[0048] ④ The shaft furnace with a production capacity of 35t / h melts the charge, and continuously produces copper liquid, which is introduced into two rotary furnaces with a capacity of 300t through two sets of upper moving launders.

[0049] ⑤ The red miscellaneous copper liquid is first introduced into the first rotary furnac...

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Abstract

The invention relates to a fire refining process for raw red copper. The process is characterized by adopting a shaft furnace, a copper water launder and at least one rotary furnace and comprising the following steps of: charging the raw material of the raw red copper into the shaft furnace by using a charging machine and smelting the raw red copper in the shaft furnace into raw red copper liquid; conveying and charging the raw red copper liquid smelted and produced from the shaft furnace into the rotary refining furnace by using the launder to perform redox refining to obtain the refined copper liquid; and allowing the refined copper liquid to directly enter a tundish through the launder to finish the subsequent procedures. According to the fire refining process, a holding furnace is saved, so the fire refining process has the advantages of high energy utilization ratio, high production continuity and good labor condition.

Description

technical field [0001] The present invention relates to a pyro-refining process of red miscellaneous copper, in particular, to a pyro-refining process of red miscellaneous copper using a shaft furnace, a copper water launder, and at least one rotary furnace, and omitting the holding furnace. The field of metal smelting technology. Background technique [0002] Red miscellaneous copper is scrap copper with a copper content of not less than 90%, also known as scrap red copper or scrap pure copper, and is the most recycled scrap copper variety. Red miscellaneous copper is purified by fire refining to become refined copper. Refined copper liquid with higher purity is used for continuous casting and rolling of copper wire blanks for electrical purposes (also known as copper rods, copper wire rods), or for casting other red copper billets. Refined copper liquid with low purity is used to cast anode plates. [0003] The currently known red miscellaneous copper pyro-refining proc...

Claims

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Application Information

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IPC IPC(8): C22B15/14
Inventor 张选志
Owner JIANGXI RARE EARTH & RARE METALS TUNGSTEN GRP HLDG CO LTD
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