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Treatment method of high-sodium, high-molybdenum and high-phosphorus clear tank APT

A treatment method and high phosphorus technology, applied in the field of tungsten and molybdenum smelting, can solve the problems of unrealized industrial application, high cost of environmental protection treatment, low recovery rate, etc., achieve significant economic and environmental benefits, shorten the utilization process, and increase recovery rate Effect

Pending Publication Date: 2022-05-13
XINYANG HUARUI MOLYBRENUM NEW MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are five main directions for the utilization technology of low-grade, high-phosphorus, high-molybdenum complex scheelite. Direction 1, sulfur-phosphorus mixed acid technology, achieves high-efficiency continuous leaching under normal conditions, and the application benefits in Xiamen Tungsten Industry Group are remarkable; Direction 2, sodium carbonate decomposition-high concentration ion exchange technology, has been applied in Hunan Chaling Dadi Tungsten Industry Co., Ltd.; direction 3, sodium carbonate high-pressure decomposition-N263 alkaline extraction-primary crystallization-ammonia dissolution-molybdenum removal-secondary The crystallization process has been applied in enterprises in Henan, Hunan, and Jiangxi. Direction 4, phosphorus salt decomposition process, has achieved pilot test in Ganzhou Zhangyuan Tungsten Industry, but has not yet realized industrial application; Direction 5, sodium carbonate high-pressure decomposition- The N235 acidic extraction process has realized industrial application in Hunan Diamond Tungsten and Jiangwu Startech Tungsten Products Co., Ltd., with remarkable benefits
When dealing with minerals such as high molybdenum and high phosphorus, two crystallization processes will be adopted, and a large amount of high-sodium, high-molybdenum, and high-phosphorus clear tank APT will be produced in the crystallization mother liquor tank. This part of APT will directly return to alkali solution, containing high ammonia nitrogen, The cost of environmental protection treatment is high, and the process is prolonged, resulting in low recovery rate

Method used

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  • Treatment method of high-sodium, high-molybdenum and high-phosphorus clear tank APT

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In this example, the high-sodium, high-molybdenum, and high-phosphorus cleaning tank APT comes from a tungsten and molybdenum smelter in Ganzhou. The sampling results are Na1.1%, Mo2.55%, and P0.01%.

[0025] (1) Mixed acid mixing: Weigh more than 2000kg of APT containing high-sodium, high-molybdenum, and high-phosphorus cleaning tank, and mix it with mixed acid (5% nitric acid, 32% hydrochloric acid), and the liquid-solid ratio of mixing is 3 / 1, and the mixing is completed. Then enter the next link.

[0026] (2) Thermal decomposition: The slurry obtained in step (1) is thermally decomposed in an airtight environment. The decomposition temperature is controlled at 95°C, the decomposition time is 60 minutes, and the stirring speed is 60r / min. After the decomposition is completed, enter the next step.

[0027] (3) Filtration: The slurry processed in step (2) is filtered to realize solid-liquid separation, the filtrate is collected and processed, and the filtration is comp...

Embodiment 2

[0032] In this example, the high-sodium, high-molybdenum, and high-phosphorus cleaning tank APT comes from a tungsten and molybdenum smelter in Ganzhou. The sampling test results are Na0.85%, Mo 3.12%, and P 0.015%.

[0033] (1) Sizing: Weigh more than 2000kg of high-sodium, high-molybdenum, and high-phosphorus cleaning tank APT, and mix it with mixed acid (5% nitric acid, 30% sulfuric acid), the liquid-solid ratio of the slurry is 3 / 1, and the slurry is completed, then Go to the next link.

[0034] (2) Thermal decomposition: The slurry obtained in step (1) is thermally decomposed in a closed chamber. The decomposition temperature is controlled at 100°C, the decomposition time is 60 minutes, and the stirring speed is 60r / min. After the decomposition is completed, enter the next step.

[0035] (3) Filtration: The slurry processed in step (2) is filtered to realize solid-liquid separation, the filtrate is collected and processed, and the filtration is completed, and then enters ...

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Abstract

The invention relates to the technical field of tungsten and molybdenum smelting, and provides a treatment method of high-sodium, high-molybdenum and high-phosphorus tank cleaning APT. Comprising the steps of size mixing, thermal decomposition, filtration, hot water washing, ammonia water dissolution and synchronous P removal, deep Mo removal and the like. The method comprises the following steps: firstly, carrying out size mixing, carrying out size mixing on high-sodium high-molybdenum clear tank APT by using nitric acid / hydrochloric acid, carrying out closed heating decomposition after the size mixing, filtering after decomposition is completed, washing with hot water, completing washing, dissolving with ammonia water, synchronously removing P, deeply removing molybdenum, and finally enabling feed liquid to enter an APT crystallization process, so that efficient utilization of the high-sodium high-molybdenum high-phosphorus clear tank APT is completed, O-grade APT is produced, the consumption of auxiliary materials is reduced, and the production cost is reduced. The method has the advantages that the utilization process is shortened, the tungsten recovery rate is increased, the economic and environment-friendly benefits are remarkable, and the method is a method for efficiently treating the high-sodium, high-molybdenum and high-phosphorus tank cleaning APT.

Description

technical field [0001] The invention relates to the technical field of tungsten and molybdenum smelting, in particular to a treatment method for cleaning tank APT containing high sodium, high molybdenum and high phosphorus. Background technique [0002] Refractory tungsten and molybdenum mineral raw materials are very important tungsten and molybdenum resources. After years of technical research by scholars in related fields, new utilization technologies in multiple directions have been developed. Among them, the utilization technology of low-grade, high-phosphorus, high-molybdenum complex scheelite has been significantly improved, providing strong support for the development of Chinese tungsten smelting enterprises. At present, there are five main directions for the utilization technology of low-grade, high-phosphorus, high-molybdenum complex scheelite. Direction 1, sulfur-phosphorus mixed acid technology, achieves high-efficiency continuous leaching under normal condition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/36C22B3/44C22B3/24C22B3/14C22B3/22
CPCC22B34/36C22B3/44C22B3/24C22B3/14C22B3/22Y02P10/20
Inventor 江亲义曾斌袁善禧郭昌平王光明
Owner XINYANG HUARUI MOLYBRENUM NEW MATERIALS CO LTD
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