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A method, purification device and application for removing surfactant in metal raw material leaching solution

A surfactant and metal raw material technology, applied in the field of metallurgy, can solve the problems of small output of metal raw materials, waste of leaching agent, poor economy, etc., to reduce the loss of metal raw materials, avoid waste of leaching agent, and release pollution-free gas. Effect

Active Publication Date: 2022-03-25
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the existing technology is that the high temperature of the roasting process leads to high energy consumption, high labor intensity and poor working environment, and produces a large amount of roasting smoke that is difficult to control, resulting in huge environmental risks
In particular, the output of some metal raw materials is small and the price is high, and the metal content of the metal raw materials varies greatly from batch to batch. During the roasting process, multiple batches of metal raw materials are randomly mixed, which will cause the metal raw materials to enter the smelting grade during leaching. Clear, which seriously affects the subsequent batching, leaching and other operations
In order to ensure the leaching rate of metal raw materials, an excessive amount of leaching agent is usually added in production, thus causing waste of leaching agent
In addition, the roasting process also causes a certain percentage of metal loss. For example, the tungsten loss rate caused by the roasting process of tungsten mineral raw materials in the prior art is about 2.5%, which will cause a great waste of resources and poor economic efficiency.

Method used

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  • A method, purification device and application for removing surfactant in metal raw material leaching solution
  • A method, purification device and application for removing surfactant in metal raw material leaching solution
  • A method, purification device and application for removing surfactant in metal raw material leaching solution

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Embodiment 1

[0055] The present embodiment provides a method for removing the surfactant in the metal raw material leaching solution, and the specific steps are as follows:

[0056] (1) The sodium tungstate leaching solution containing surfactant is frozen and crystallized at 0°C, the crystals are separated out and filtered, the filtrate is collected, and 350 mL of filtrate (tungsten concentration is 81.4 g / L, total organic carbon (total organic carbon) corresponding to the surfactant organic carbon, hereinafter referred to as TOC) concentration is 73.5mg / L, pH is 11.0), adding sulfuric acid solution to it to adjust pH to 10.0, the sodium tungstate leachate after pH value adjustment is added to advanced oxidation through metal raw material leachate adding device 2 In the reactor 1, the activated carbon catalyst bed is included in the reactor 1, and ozone is introduced into the advanced oxidation reactor 1 through the ozone feeding device 5, and the ozone is evenly distributed in the sodium ...

Embodiment 2

[0059] The difference from Example 1 is that the tungsten concentration in the filtrate is 82.4 g / L, the TOC concentration is 75.6 mg / L, the pH is 10.5, and the freezing crystallization step is not performed.

Embodiment 3

[0061] The difference from Example 1 is that the tungsten concentration in the filtrate is 81.9 g / L, the TOC concentration is 74.5 mg / L, the pH is 11.0, and 30% of hydrogen peroxide is replaced with an equivalent amount of persulfate.

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Abstract

The present invention relates to a method for removing surfactants in metal raw material leaching solution, a purification device and its use. The method includes the following steps: performing advanced oxidation treatment on the metal raw material leaching solution to obtain purified metal raw material leaching solution. The purification device For the method for removing the surfactant in the metal raw material leachate, the purification device includes an advanced oxidation reactor 1, a metal raw material leachate adding device 2, a waste gas discharge device 7, a purification liquid discharge device 3, and at least one ozone adding device 5 . At least one aeration device 6, the aeration device is connected to the ozone adding device through a pipeline, and the method is used in the metallurgical industry. The method of the invention can effectively remove the surfactant, reduce the loss of metal raw materials, and avoid the waste of leaching agents.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method, purification device and application for removing surfactants in metal raw material leaching solution. Background technique [0002] Metal raw materials such as scheelite, black and white tungsten mixed ore, tungsten fine mud, artificial scheelite, low-grade tungsten and molybdenum mixed ore, zinc oxide, and metal-containing catalyst waste have become the main raw materials in the metal industry. During the processing of these raw materials, mineral processing agents based on surfactants are often added, and the presence of surfactants will have various adverse effects on subsequent processes. For example, in the process of leaching the tungsten mineral raw material containing surfactant to prepare sodium tungstate solution, the surfactant will enter into the sodium tungstate solution, and the sodium tungstate solution containing surfactant will be extracted by the ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/44C22B3/22C22B34/36C01G41/00
CPCC22B3/44C22B3/22C22B34/36C01G41/00
Inventor 谢勇冰曹宏斌徐双
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI