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Method and device for separating and recovering metallic copper and tin in tinplating copper rice

A technology of separation recovery and separation device, which is applied in the field of direct recovery of metal copper and tin from tinned copper rice. It can solve the problems of poor wettability, small particle size of tinned copper rice, and difficult separation of tinned copper rice from copper and tin. Fast, high tin removal rate and recovery rate, simple and easy process

Inactive Publication Date: 2011-01-05
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small particle size and poor wettability of tinned copper rice, it is difficult to separate copper and tin from tinned copper rice by heap leaching and other processes

Method used

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  • Method and device for separating and recovering metallic copper and tin in tinplating copper rice
  • Method and device for separating and recovering metallic copper and tin in tinplating copper rice
  • Method and device for separating and recovering metallic copper and tin in tinplating copper rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Put 100 kilograms into the special leaching equipment for copper and tin separation treatment. The temperature is 40°C, the time is 15 minutes, and the rotation speed is 50rpm. 80mL / L, the time is 10 minutes, the rotation speed is 50rpm, the washing time is 10 minutes, the rotation speed is 50rpm, the dehydration time is 3 minutes, and the rotation speed is 3000rpm; the immersion liquid is added to excess tin ingots for copper removal treatment, and the treatment temperature is 40°C, until the blue color of the immersion solution is completely eliminated, filter to obtain the filtrate and copper powder; electrolyze the filtrate in the electrolytic cell, and the cathode current density is 0.5A / dm 2 , temperature 20°C, until the concentration of stannous ions in the solution is 14g / L, the electrolysis is stopped to obtain metal tin and the liquid after electrolysis; an appropriate amount of copper powder is added to the liquid after washing and air is blown in, and the amo...

Embodiment 2

[0040] Put 100 kilograms into the special leaching equipment and carry out the copper-tin separation treatment. During spin leaching, the temperature is 60° C., the time is 5 minutes, and the rotating speed is 3000 rpm. The fresh immersion solution used for rinsing is the fresh immersion solution prepared in Example 1, and the time is 5 minutes, the rotation speed is 3000rpm, the washing time is 5 minutes, the rotation speed is 3000rpm, the dehydration time is 5 minutes, the rotation speed is 1500rpm; the immersion solution is added to excess tin ingots for copper removal treatment, and the treatment temperature is 60°C until the immersion solution turns blue Until the color is completely eliminated, the filtrate and copper powder are obtained by filtration; the filtrate is electrolyzed in an electrolytic cell, and the cathode current density is 3A / dm 2, temperature 40°C, until the concentration of stannous ions in the solution is 15g / L, the electrolysis is stopped to obtain me...

Embodiment 3

[0042] 100 kilograms are packed into special-purpose leaching equipment and carry out copper-tin separation treatment, and temperature is 50 ℃ during spin leaching, and time is 12 minutes, and rotating speed is 1500rpm, and the fresh immersion liquid used for rinsing is the fresh immersion liquid prepared in embodiment 2, and the time is 7 minutes, the rotation speed is 1200rpm, the washing time is 8 minutes, the rotation speed is 1500rpm, the dehydration time is 4 minutes, the rotation speed is 2500rpm; the immersion solution is added to excess tin ingots for copper removal treatment, and the treatment temperature is 50°C until the immersion solution turns blue Until the color is completely eliminated, the filtrate and copper powder are obtained by filtration; the filtrate is electrolyzed in an electrolytic cell, and the cathode current density is 2A / dm 2 , temperature 30°C, until the concentration of stannous ions in the solution is 13g / L, the electrolysis is stopped to obtai...

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Abstract

The invention relates to a method and a device for separating and recovering metallic copper and tin in the tinplating copper rice by a wet method. The method comprises the following steps: placing the tinplating copper rice into a dedicated leaching plant for copper and tin separation according to the design requirement; adding excessive tin ingot to the immersion liquid to remove the copper until the blue of the immersion liquid is completely eliminated; filtering to obtain filter liquor and copper powder; electrolyzing the filter liquor in an electrolytic cell to obtain the metallic tin and liquid after electrolyte; adding a proper amount of copper powder and blowing air into the liquid for regeneration after being washed with water; mixing the regenerated liquid and the liquid after the electrolyte; regulating the concentration of copper sulfate and sulfuric acid in the solution by utilizing water, copper sulfate and 98% of sulfuric acid to obtain fresh immersion liquid to be used in the next tinplating copper process. The copper and tin separation processing device is composed of the dedicated leaching plant, an immersion liquid trough, a fresh immersion liquid trough and a rinsing bath. The method and the device have simple and feasible process; and all the raw materials and equipment are more common and have low price.

Description

technical field [0001] The invention belongs to the recovery and treatment of tinned copper materials, in particular to a method and a device for directly recovering metal copper and tin from tinned copper rice. Background technique [0002] The electronics and communication industries use a large number of tinned copper wires. During the production and use of tinned copper wires, a large amount of waste tinned wires will inevitably be produced. For the treatment of this part of tinned copper wires, except for a part used for production In addition to bronze alloys, for other applications, it is required to remove the tinned layer on the copper wire. The tin content in the tinned copper wire is about 1wt%, and the copper content is above 98%, which has a high recycling value. [0003] At present, fire method, fire electrolysis method, electrochemical method and chemical method are mainly used at home and abroad to recycle tinned copper wire. Chinese invention patent 951118...

Claims

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Application Information

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IPC IPC(8): H01B15/00
CPCY02W30/82
Inventor 潘德安张深根李彬田建军刘波
Owner UNIV OF SCI & TECH BEIJING
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