Copper-contained waste metal copper recycling process

A technology for metal copper and copper waste, applied in the field of copper-containing waste metal copper recycling process, can solve the problems of not realizing the recycling of waste copper and the indeterminacy of copper alloy properties, and achieve the effects of reducing bonding strength, promoting separation, and promoting melting.

Active Publication Date: 2020-04-17
洛南环亚源铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned technical scheme can realize rapid separation of metal substances and non-metal substances through the two sortings of step (3). However, copper metal is not only present in the separated metal substances, but also metals such as molybdenum, magnesium, calcium, etc. Therefore, the refined copper mixture obtained in step (4) is actually a copper mixture containing a mixture of various metal elements, wh

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  • Copper-contained waste metal copper recycling process
  • Copper-contained waste metal copper recycling process
  • Copper-contained waste metal copper recycling process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of copper-containing scrap metal copper recovery process that embodiment 1 provides, comprises the following preparation steps:

[0040] Step 1, prepare copper-containing clinker:

[0041] All kinds of hazardous waste (except HW49) are transported to the warehouse in the hazardous waste area by airtight trucks, and are transported into the feed hopper of the rotary kiln through the feeder. A pusher and air lock facilities are installed under the feed hopper to ensure the negative pressure of the rotary kiln. run.

[0042] Hazardous waste in raw materials (including HW12 dye, paint waste, HW17 surface treatment, HW22 copper-containing waste, HW45 organic halide-containing waste, HW46 nickel-containing waste, HW48 non-ferrous metal smelting waste, HW50 waste catalyst, a total of 95000t / a) After batching until the copper content reaches 22wt%, it can enter the rotary kiln.

[0043] The incineration temperature in the rotary kiln is 850°C, using semi-coke as fuel, ...

Embodiment 2

[0055] A kind of copper-containing scrap metal copper recovery process that embodiment 2 provides, comprises the following preparation steps:

[0056] Step 1, preparing copper-containing clinker, the difference from Example 1 is that the burning time in the rotary kiln is 1.5h.

[0057] Step 2, preparation of copper-containing powder: the preparation method is the same as in Example 1.

[0058] Step 3, making bricks:

[0059] The difference from Example 1 is that tailing slag or refining slag is added to the copper-containing clinker and copper-containing powder.

[0060] Step 4, smelting:

[0061] The difference from Example 1 is that the addition of limestone is 0.8kg, the addition of quartz stone is 0.8kg, the addition of iron oxide powder is 0.8kg, the addition of semi-coke is 6kg, and the oxygen in the furnace air reaches 29vol%. , The melting temperature of the melting furnace is 1150°C.

[0062] Step 5, the treatment of flue gas from the smelting furnace is the same...

Embodiment 3

[0064] A kind of copper-containing scrap metal copper recovery process that embodiment 3 provides, comprises the following preparation steps:

[0065] Step 1, preparing copper-containing clinker, is the same as the preparation method of Example 1.

[0066] Step 2, preparation of copper-containing powder: the preparation method is the same as in Example 1.

[0067] Step 3, brick making: same as the preparation method of embodiment 1.

[0068] Step 4, smelting:

[0069] The difference from Example 1 is that the addition amount of limestone is 1kg, the addition amount of quartz stone is 1kg, the addition amount of iron oxide powder is 1kg, the addition amount of semi-coke is 7kg, the oxygen in the furnace air reaches 30vol%, the smelting furnace The melting temperature is 1200°C.

[0070] Step 5, the treatment of flue gas from the smelting furnace is the same as the treatment process in Example 1.

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Abstract

The invention discloses a copper-contained waste metal copper recycling process. The process comprises the following steps of firstly, preparing copper-contained clinker; secondly, preparing copper-contained powder; thirdly, brick making, wherein the copper-contained clinker prepared in the first step, and the copper-contained powder made in the second step are burdened until the copper containingamount reaches above 25wt%, and then enter a brick making system, and a solidifying agent is prepared for preparing a copper brick block; fourthly, smelting; and fifthly, smelting furnace smoke treatment. According to the copper-contained waste metal copper recycling process, metal copper in the copper-contained waste can be recycled, meanwhile, non-copper metal elements in the recycled copper alloy can be reduced, and a raw material can be provided for subsequent preparing of refined copper.

Description

technical field [0001] The invention relates to the field of copper refining, in particular to a process for recovering copper from copper-containing scrap metal. Background technique [0002] Copper has excellent properties such as electrical conductivity, thermal conductivity, ductility, corrosion resistance and wear resistance, and is widely used in fields such as electric power, electronics, energy and petrochemicals, machinery and metallurgy, transportation, light industry and emerging industries . Due to the rapid development of the aforementioned fields, the contradiction between the shortage of copper ore resources and the rapid growth of refined copper demand has become increasingly prominent, and the effective way to solve this contradiction is to rationally utilize recycled copper resources, mainly through the recycling of scrap copper. Scrap copper is a general term for scrap copper and red miscellaneous copper. It is produced from waste products and waste mater...

Claims

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Application Information

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IPC IPC(8): C22B15/00C22B1/243C22B7/00
CPCC22B1/243C22B15/0006C22B15/0056Y02P10/20
Inventor 卢燕金竹林谢沛东
Owner 洛南环亚源铜业有限公司
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