Method for enhancing vanadium shale ore grinding and leaching efficiency through microwaves

A technology for vanadium shale and shale, which is applied in the field of vanadium extraction from shale, can solve the problems of long processing time, microwave processing time, and large carbon emissions, and achieve the goal of improving the processing effect, shortening the processing cycle, and shortening the processing cycle Effect

Pending Publication Date: 2022-07-15
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the conventional roasting method, although the roasting temperature and roasting time are shortened, and the leaching rate is also improved; but there are still technical defects such as high processing temperature, long processing time and high energy consumption; moreover, the microwave roasting temperature It has far exceeded the combustion temperature of carbon in vanadium shale, and a large amount of carbon emissions will be generated during the process
In addition, this method belongs to discontinuous microwave treatment. When a large amount of vanadium-bearing shale needs to be processed, the operation of this device will be more comp

Method used

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  • Method for enhancing vanadium shale ore grinding and leaching efficiency through microwaves
  • Method for enhancing vanadium shale ore grinding and leaching efficiency through microwaves

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Effect test

Embodiment 1

[0044] A method for enhancing vanadium shale grinding and leaching efficiency using microwaves. The steps of the method described in this embodiment are:

[0045] Step 1. Crushing and screening the vanadium shale raw ore to obtain vanadium shale raw ore with a particle size of less than 1.5 mm and vanadium shale raw ore with a particle size of 1.5-10.0 mm.

[0046] Step 2. Use the "Continuous Microwave Treatment Device for Strengthening Vanadium Shale Grinding and Leaching Efficiency" for microwave treatment, set the transport speed of the conveyor belt 9, turn on the switches of all wave sources in the continuous microwave treatment device, and start conveyor belt 9.

[0047] The vanadium shale raw ore with a particle size of 1.5-10.0 mm is fed from the feed port of the obtained continuous microwave treatment device, and the feeding amount is 60kg / h; Microwave-treated vanadium shale.

[0048] Step 3. According to the mass ratio of the microwave-treated vanadium shale to wa...

Embodiment 2

[0062] A method for enhancing vanadium shale grinding and leaching efficiency using microwaves. The steps of the method described in this embodiment are:

[0063] Step 1. Crushing and screening the vanadium shale raw ore to obtain vanadium shale raw ore with a particle size of less than 1.5 mm and vanadium shale raw ore with a particle size of 1.5-10.0 mm.

[0064] Step 2. Use the "Continuous Microwave Treatment Device for Strengthening Vanadium Shale Grinding and Leaching Efficiency" for microwave treatment, set the transport speed of the conveyor belt 9, turn on the switches of all wave sources in the continuous microwave treatment device, and start conveyor belt 9.

[0065] The vanadium shale raw ore with a particle size of 1.5-10.0 mm is fed from the feed port of the continuous microwave treatment device, and the feeding amount is 100 kg / h; from the discharge port of the continuous microwave treatment device, namely microwaved vanadium shale.

[0066] Step 3. According ...

Embodiment 3

[0080] A method for enhancing vanadium shale grinding and leaching efficiency using microwaves. The steps of the method described in this embodiment are:

[0081] Step 1. Crushing and screening the vanadium shale raw ore to obtain vanadium shale raw ore with a particle size of less than 1.5 mm and vanadium shale raw ore with a particle size of 1.5-10.0 mm.

[0082] Step 2. Use the "Continuous Microwave Treatment Device for Strengthening Vanadium Shale Grinding and Leaching Efficiency" for microwave treatment, set the transport speed of the conveyor belt 9, turn on the switches of all wave sources in the continuous microwave treatment device, and start conveyor belt 9.

[0083] The vanadium shale raw ore with a particle size of 1.5-10.0mm is fed from the feed port of the continuous microwave treatment device, and the feeding amount is 150kg / h; from the discharge port of the continuous microwave treatment device That is to obtain microwave-treated vanadium shale.

[0084] Ste...

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Abstract

The invention relates to a method for enhancing vanadium shale ore grinding and leaching efficiency by utilizing microwaves. According to the technical scheme, the method comprises the following steps: crushing and screening vanadium shale raw ore to obtain vanadium shale raw ore with the particle size of less than 1.5 mm and vanadium shale raw ore with the particle size of 1.5-10.0 mm; starting a continuous microwave treatment device for strengthening vanadium shale ore grinding and leaching efficiency, feeding vanadium shale raw ore with the particle size of 1.5-10.0 mm from a feed port at the speed of 60-150kg/h, and performing water quenching according to the mass ratio of the vanadium shale subjected to microwave treatment to water of 1: (1-3) to obtain water-quenched slurry; and mixing the water-quenched slurry with the vanadium shale raw ore with the particle size of less than 1.5 mm according to the mass ratio of the vanadium shale raw ore with the particle size of less than 1.5 mm to the vanadium shale raw ore with the particle size of 1.5-10.0 mm of 1: (1.5-2), grinding, and leaching the obtained ground product. The method is short in treatment time, low in energy consumption, free of carbon emission, good in vanadium shale grindability and leaching rate strengthening effect, easy to operate, high in treatment efficiency and suitable for microwave strengthening of a vanadium shale all-wet-process vanadium extraction system.

Description

technical field [0001] The invention belongs to the technical field of vanadium extraction from shale. Specifically, it relates to a method for enhancing the efficiency of vanadium shale grinding and leaching by microwave. Background technique [0002] Vanadium-bearing stone coal (vanadium shale) is a kind of important vanadium resource, and vanadium extraction from shale has become an important way and demand guarantee for the development and utilization of vanadium resources in my country. The grinding and leaching of vanadium shale are two important links in the process of vanadium extraction from shale. The efficiency of grinding and leaching together determines the comprehensive recovery rate of shale vanadium and the cost of vanadium extraction. As a clean energy, microwave has received extensive attention in the field of mining and metallurgy, especially in auxiliary grinding and enhanced leaching. [0003] Junpeng Wang et al. (Junpeng Wang,Tao Jinag,Yajing Liu,and ...

Claims

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Application Information

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IPC IPC(8): C22B4/04C22B34/22C22B4/08C22B1/00C22B3/04
CPCC22B4/04C22B34/22C22B4/08C22B1/00C22B3/04
Inventor 袁益忠张一敏刘红胡鹏程
Owner WUHAN UNIV OF SCI & TECH
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