Method for preparing mixture by synchronously grinding and mixing vanadium slag and limestone in vanadium slag calcification vanadium extraction process

A mixture and limestone technology, applied in the field of metallurgy, can solve the problems of unstable index, low quality of mixture, and low yield of vanadium, and achieve the effects of stable product quality, reduction of vanadium slag overgrinding ratio, and simple equipment.

Inactive Publication Date: 2018-12-28
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Abstract
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Problems solved by technology

[0003] The present invention aims to solve the technical problems of low quality, unstable index and low vanadium yield of the mixture prepared by the existing step-by-step ball milling remixing process

Method used

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  • Method for preparing mixture by synchronously grinding and mixing vanadium slag and limestone in vanadium slag calcification vanadium extraction process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The raw material of this embodiment:

[0026] Vanadium slag: V 2 o 5 The mass percentage is 19.15%, the CaO mass percentage is 2.28%, and the particle size is 1-10cm;

[0027] Limestone block: CaO mass percentage content is 54.21%, particle size is 1-6cm;

[0028] In the current industrial production system of vanadium slag ball mill air separation (a vanadium slag calcification vanadium extraction plant in China), the feed end of the ball mill is based on CaO / V 2 o 5 =0.62 mixes vanadium slag block and limestone block, carries out synchronous grinding and material mixing operation by ball mill system, obtains vanadium slag calcification and extracts vanadium mixture after the winnowing system again, and its quality is as shown in table 1 through repeated sampling analysis, By measuring the weight of the material, the yield of vanadium in the mixture is calculated to be 98.79%.

[0029] Table 1 The indicators of the mixture

[0030] CaO / V 2 o 5

Embodiment 2

[0032] The raw material of this embodiment:

[0033] Vanadium slag: V 2 o 5 The mass percentage is 15.76%, the CaO mass percentage is 3.65%, and the particle size is 1-10cm;

[0034] Limestone block: CaO mass percentage content is 54.21%, particle size is 1-6cm;

[0035] In the current industrial production system of vanadium slag ball mill air separation (a vanadium slag calcification vanadium extraction plant in China), the feed end of the ball mill is based on CaO / V 2 o 5 =0.62 add vanadium slag block and limestone block, carry out synchronous grinding and material mixing operation by ball mill system, then obtain vanadium slag calcification vanadium extracting mixture after air separation system, its quality is as shown in table 2 through multiple sampling analysis, By measuring the weight of the material, the yield of vanadium in the mixture is calculated to be 98.83%.

[0036] Table 2 The indicators of the mixture

[0037] CaO / V 2 o 5

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Abstract

The invention discloses a method for preparing a mixture by synchronously grinding and mixing vanadium slag and limestone in a vanadium slag calcification vanadium extraction process, belongs to the technical field of metallurgy, and aims to solve the technical problems of low quality, unstable index and low vanadium yield of existing mixtures subjected to step-by-step ball milling and mixing. Themethod comprises the following steps: adding vanadium slag blocks and limestone blocks according to CaO/V2O5 requirements of the vanadium slag calcification vanadium extraction process at the feed end of a vanadium slag ball milling system, performing synchronous grinding and mixing operations through the ball milling system, and performing selection to obtain the mixture. According to the method, the vanadium slag blocks and the limestone blocks are treated simultaneously by a ball mill, grinding and mixing are completed in one step, and accordingly, the qualified mixture is prepared. Compared with the conventional process, the process method has the advantages of short flow, simple equipment, stable product quality, low cost, low flying loss and the like.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a method for synchronous grinding and mixing of vanadium slag and limestone in the process of vanadium extraction by calcification of vanadium slag to prepare a mixture. Background technique [0002] Vanadium slag is the main raw material for vanadium extraction. At present, there are two main processes: vanadium slag sodium extraction and calcification vanadium extraction. The vanadium slag used for vanadium extraction is mainly in the form of lumps at the beginning, no matter what process is used to extract vanadium, it needs to be crushed and ground to prepare it into a fine powder vanadium slag with a certain particle size requirement, and then separate the vanadium slag according to the selected vanadium extraction process It is mixed with sodium carbonate or limestone to prepare the mixture for further roasting. Industrial sodium carbonate itself is in the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/00C22B7/00C22B34/22
CPCC22B1/005C22B7/001C22B34/22Y02P10/20
Inventor 高官金彭毅伍珍秀李明申彪
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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