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

A pyro-refining and rotary furnace technology, used in furnaces, furnace types, etc., can solve the problems of high fuel consumption, low utilization rate of shaft furnaces, and increased energy consumption, so as to improve large-scale, ensure continuity, and improve melting efficiency. Effect

Inactive Publication Date: 2010-09-29
GANZHOU JIANGWU NEW TYPE ALLOY MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Examples

Experimental program
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Effect test

Embodiment 1

[0044] The pyro-refining process of the project with an annual output of 220,000 tons of copper wire blanks using red miscellaneous copper as raw material, the method of lifting copper liquid three times in copper water bag, the steps are as follows:

[0045] ① Pre-treat the red miscellaneous copper charge, 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 charge 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 picked up by a copper ladle with a nominal capacity of 100t, and is hoisted and poured into two rotary furnaces with a nominal capacity of 300t.

[0049] ⑤ Lifting and pouring into th...

Embodiment 2

[0055] The pyro-refining process of the project with an annual output of 220,000 tons of copper wire blanks using red miscellaneous copper as raw material, the method of lifting and transporting the copper liquid twice in the copper water bag, the steps are as follows:

[0056] Step 1., 2., 3. are identical with embodiment 1.

[0057] ④ The shaft furnace with a production capacity of 35t / h melts the charge, and continuously produces copper liquid, which is picked up by a copper ladle with a nominal capacity of 150t, and is hoisted and poured into two rotary furnaces with a nominal capacity of 300t.

[0058] ⑤ Lifting and pouring into the first rotary furnace, a total of 2 times, about 150t each time. After pouring 300t, it enters oxidation, slagging, reduction, temperature control and composition refining operations, and copper can be produced after completion.

[0059] Step 6, 7, 8, 9 are identical with embodiment 1.

[0060] The present invention determines the nominal cap...

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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 bag and at least one rotary furnace and comprising the following steps of: 1) 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; 2) lifting and charging the raw red copper liquid smelted and produced from the shaft furnace into the rotary refining furnace by using the copper water bag to perform redox refining to obtain the refined copper liquid; and 3) allowing the refined copper liquid to directly enter a tundish through a 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 red miscellaneous copper pyro-refining process, in particular, to a red miscellaneous copper pyro-refining process using a shaft furnace, a copper ladle, and at least one rotary furnace, and omitting a holding furnace, which belongs to nonferrous metals Smelting technology field. 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-refinin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B15/14
CPCC22B15/005C22B15/0052C22B15/006
Inventor 张选志
Owner GANZHOU JIANGWU NEW TYPE ALLOY MATERIAL
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