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Efficient flotation method for copper regeneration and recovery smelting slag

A smelting slag and high-efficiency technology, which is applied in the field of high-efficiency flotation of smelting slag for copper regeneration and recovery, can solve the problems of difficult separation, complicated operation and large floor space, and achieves the effects of many bubbles, cumbersome operation and low cost.

Pending Publication Date: 2021-10-15
江西新金叶实业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flotation beneficiation needs to go through at least 3-4 flotation pools for beneficiation, covering an area of ​​up to 100000 square meters. Different collectors need to be selected for each flotation, and the operation is relatively complicated.
Due to the characteristics of low copper and high impurities in copper slag and the existence of copper metal in different environmental states including copper sulfide, copper oxide and free copper, it is not easy to separate

Method used

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  • Efficient flotation method for copper regeneration and recovery smelting slag
  • Efficient flotation method for copper regeneration and recovery smelting slag
  • Efficient flotation method for copper regeneration and recovery smelting slag

Examples

Experimental program
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Effect test

Embodiment 1

[0047] A high-efficiency flotation method for copper regeneration and recovery of smelting slag, the specific flotation process is as follows:

[0048] 1) Pretreat the slag, crush the slag through a jaw crusher, and then put it into a ball mill for ball milling, so that the particle size of the crushed particles can pass through a 400-mesh sieve;

[0049] 2) Put the above-prepared powder into the pretreatment tank, add Thiobacillus thiaphulum into the tank, add buffer and water, adjust the pH to 6.0, submerge the powder in the liquid, heat up while stirring, at 2°C / min The temperature is raised to 23°C for 4 days, among which minerals: Thiobacillus thiaphus = 1t: 20kg;

[0050] 3) Filter the above mixture to remove the mud, transfer the remaining substances to the flotation collection tank, add the modified collector for flotation collection, and adjust the pH value to 5.0 at the same time, and the solution temperature is 30°C. The mass ratio of the collector is 1t: 2kg;

[...

Embodiment 2

[0079] A high-efficiency flotation method for copper regeneration and recovery of smelting slag, the specific flotation process is as follows:

[0080] 1) Pretreat the slag, crush the slag through a jaw crusher, and then put it into a ball mill for ball milling, so that the particle size of the crushed particles can pass through a 400-mesh sieve;

[0081] 2) Put the above-prepared powder into the pretreatment tank, add Thiobacillus thiaphulum into the tank, add buffer and water, adjust the pH to 5.5, submerge the powder in the liquid, heat up while stirring, at 1°C / min The temperature is raised to 25°C for 3 days, among which minerals: Thiobacillus thiaphulens = 1t: 20kg;

[0082] 3) Filter the above mixture to remove the mud, transfer the remaining substances to the flotation collection tank, add modified collectors for flotation collection, and adjust the pH value to 5.5 at the same time, the solution temperature is at 35 ° C, the mixture and the modified The mass ratio of ...

Embodiment 3

[0111] A high-efficiency flotation method for copper regeneration and recovery of smelting slag, the specific flotation process is as follows:

[0112] 1) Pretreat the slag, crush the slag through a jaw crusher, and then put it into a ball mill for ball milling, so that the particle size of the crushed particles can pass through a 400-mesh sieve;

[0113] 2) Put the above-prepared powder into the pretreatment tank, add Thiobacillus thiaphulum into the tank, add buffer and water, adjust the pH to 6.5, submerge the powder in the liquid, heat up while stirring, at 3°C / min The temperature is raised to 20°C for 3 days, among which minerals: Thiobacillus thiaphus = 1t: 20kg;

[0114] 3) Filter the above mixture to remove the mud, transfer the remaining substances to the flotation collection tank, add the modified collector for flotation collection, and adjust the pH value to 4.5 at the same time, the solution temperature is at 25°C, the mixture and the modified The mass ratio of th...

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Abstract

The invention provides an efficient flotation method for copper regeneration and recovery smelting slag. Before flotation, thiobacillus is added to pretreat the copper slag, the thiobacillus assists in decomposing the slag, and the recovery rate of copper can be further increased. The prepared modified collecting agent enables the collecting effect to be excellent and can be used for collecting copper from copper slag which is low in copper and high in impurity and contains copper oxide, copper sulfide and other combined copper and free copper, and the flotation effect is excellent, and the process is simple and easy to operate. The activating reaction process after the collecting agent is added is effectively controlled by adding an adjusting agent. The adsorbent is a nano-porous covalent organic polymer and can be prepared on a large scale without inactivation. Through a reductive capture mechanism, precious metals such as copper, platinum, gold and silver can be adsorbed at the same time, the cost is low, and benefits are high. The prepared collecting agent and adjusting agent can effectively adsorb the copper element in the solution, and the recovery rate of copper is increased.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of slag, in particular to a high-efficiency flotation method for copper regeneration and recovery of smelting slag. [0002] technical background [0003] Copper slag is a kind of "artificial ore" waste slag produced by pyrometallurgy of copper. A large amount of copper slag is produced during the copper smelting process. The amount of slag increases with the increase of copper smelting output. On average, every 1 ton of metallic copper produced will produce 2.2 tCopper slag, copper slag, as a waste of the smelting industry, has been simply piled up by people for a long time, and there is no reasonable and resourceful utilization method. From 2006 to 2015, my country's refined copper output continued to grow rapidly. In 2015, my country's copper output reached 7.96 million tons, of which more than 97% were produced by pyrometallurgy. Based on this, it is estimated that my country ...

Claims

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Application Information

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IPC IPC(8): B03D1/018C22B7/04C22B11/00C22B15/00C22B3/18C22B3/24B03D101/02B03D103/02
CPCB03D1/018C22B7/006C22B7/04C22B11/044C22B15/0086C22B3/18C22B3/24B03D2201/02B03D2201/005B03D2203/02Y02P10/20
Inventor 刘安民丁家周李立凯
Owner 江西新金叶实业有限公司
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