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A method for recovering metal copper by using organosilicon waste contacts

A technology of organosilicon waste contacts and metal copper, which is applied in the direction of improving process efficiency, can solve the problems of difficult and effective use of organosilicon waste contacts, large pollution, and low purity, and achieves low pollution, high purity, and high yield high effect

Active Publication Date: 2021-05-25
安徽德诠新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve a series of problems such as low yield, low purity, or large pollution in various processes for extracting and recovering metal copper from organic silicon waste contacts, which are difficult to effectively use, this paper The invention provides a method for recycling metal copper by using organic silicon waste contacts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A method for reclaiming metal copper by using organosilicon waste contacts, said method comprising the following steps:

[0047] 1) Put 5t of organic silicon waste contacts in the air for oxidative roasting at 600°C for 2.5 hours to remove organic impurities and obtain a solid product, weigh and calculate the density of the solid product in combination with the liquid drainage method, and record the density of the solid product, Add a carbon source by stirring ball milling, and mix 1 ton of calcined solid product with 100kg of carbon black powder evenly;

[0048] 2) After mixing evenly, place it in a nitrogen protective atmosphere and heat it to 400°C for carbon-deficiency reduction for 30 minutes. After carbon-deficiency reduction, collect the discharged high-temperature flue gas, take a small amount of high-temperature flue gas and pass it into the oxygen-containing chamber, and use the method of spark ignition Measure its flammability, and if it is not flammable, car...

Embodiment 2

[0055] A method for reclaiming metal copper by using organosilicon waste contacts, said method comprising the following steps:

[0056] 1) Place 5t of organic silicon waste contacts in the air for oxidative roasting at 500°C for 3 hours to remove organic impurities and obtain a solid product, weigh it and calculate the density of the solid product in combination with the liquid drainage method, record the density of the solid product, and pass Add carbon source by stirring ball milling, and mix 1 ton of calcined solid product with 160kg of carbon black powder evenly;

[0057] 2) After mixing evenly, place it in a nitrogen protective atmosphere and heat it to 600°C for carbon-deficiency reduction for 30 minutes. After carbon-deficiency reduction, collect the discharged high-temperature flue gas, take a small amount of high-temperature flue gas and pass it into the oxygen-containing chamber, and use the method of spark ignition Measure its flammability, and if it is not flammabl...

Embodiment 3

[0064] A method for reclaiming metal copper by using organosilicon waste contacts, said method comprising the following steps:

[0065] 1) Place 5t of organic silicon waste contacts in the air for oxidative roasting at 600°C for 3 hours to remove organic impurities and obtain a solid product, weigh it and calculate the density of the solid product in conjunction with the liquid drainage method, record the density of the solid product, and pass Add carbon source by stirring ball milling, and mix 1 ton of calcined solid product with 160kg of carbon black powder evenly;

[0066] 2) After mixing evenly, put it in a nitrogen protective atmosphere and heat it to 650°C for carbon deficiency reduction for 30 minutes. After carbon deficiency reduction, collect the discharged high-temperature flue gas, take a small amount of high-temperature flue gas and pass it into the oxygen-containing chamber, and use spark ignition Measure its flammability, and if it is not flammable, carry out car...

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Abstract

The invention relates to the field of metal recovery and smelting, in particular to a method for recovering metal copper by utilizing organic silicon waste contact bodies. It includes: oxidizing and roasting the waste organosilicon to remove organic impurities; collecting the calcined solid product, mixing it with a small amount of carbon source and placing it in a protective atmosphere to heat for carbon-deficient reduction, and collecting the discharged high-temperature flue gas after carbon-deficient reduction , and repeat the carbon-deficient reduction for the remaining solid product several times until the high-temperature flue gas after discharge is combustible to obtain a pre-product; the method of heavy-liquid separation is used to separate and obtain metallic copper. The preparation process of the invention has little pollution, does not discharge polluting liquids and gases, and does not need to use acid and alkali substances, so it is very green and environmentally friendly; the yield of metallic copper is high, and the prepared metallic copper has higher purity; the preparation process The utilization rate of various materials has reached a very high level, and there is basically no material waste, and most of the materials can be recycled.

Description

technical field [0001] The invention relates to the field of metal recovery and smelting, in particular to a method for recovering metal copper by utilizing organic silicon waste contacts. Background technique [0002] In the production and preparation of organosilicon, silicon and methyl chloride are used as the main raw materials, ternary copper and zinc are used as catalysts and additives respectively, and ternary copper is used as the main catalyst component, which is often used to catalyze organosilicon monomers such as dimethyl Synthetic preparation of dichloromethane. During this process, when the conversion rate of silicon powder and the selectivity of methylchlorosilane monomer reach a certain level, the remaining silicon powder and catalyst should be discharged from the reactor to form industrial waste residue, that is, organic silicon waste contact body. [0003] Organosilicon waste contacts also contain a large amount of silicon and copper, and the silicon conte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B5/10C22B1/02C22B15/00
CPCC22B1/02C22B5/10C22B7/001C22B7/006C22B15/0015C22B15/0021C22B15/0086Y02P10/20
Inventor 朱胜利张惠斌朱艳杰仇慧萍
Owner 安徽德诠新材料科技有限公司
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