Flotation type tungsten raw material extraction all-wet-process smelting process

A full wet and extraction technology, applied in the field of flotation type tungsten raw material extraction full wet smelting process, can solve the problems of temperature fluctuation, waste of resources, poor economy and so on

Pending Publication Date: 2021-07-06
江钨世泰科钨品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of the prior art 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, thereby causing huge environmental risks, especially the random mixing of multiple batches of tungsten mineral raw materials during the roasting process ( Due to the small output and high price of tungsten, tungsten mineral raw materials are usually in batches of ten tons, and the tungsten content varies greatly between batches), resulting in unclear grades of tungsten mineral raw materials entering the smelting process during leaching, which seriously affects sub

Method used

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  • Flotation type tungsten raw material extraction all-wet-process smelting process
  • Flotation type tungsten raw material extraction all-wet-process smelting process
  • Flotation type tungsten raw material extraction all-wet-process smelting process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] A flotation type tungsten raw material extraction full wet smelting process, according to the above process and method to produce ammonium paratungstate products, wherein:

[0099] Leaching process: the leaching agent is sodium carbonate, and the defoaming agent is SXP, which is obtained by fractionation or cracking of petroleum. 10 ~C 18 Alkane product (the mass ratio of defoamer to flotation type tungsten raw material is 1:1×10 9 ), leaching for 8 hours at 100°C.

[0100] Solid-liquid separation process: adopt filter press separation method.

[0101] Purification process: the purifying agent is magnesium sulfate.

[0102] Sulfurization acid adjustment and molybdenum removal process: the molybdenum removal agent is sodium sulfide.

[0103] Extraction process: two-stage countercurrent extraction, the extracted organic phase includes 8 parts of tertiary amine (N235), 78 parts of high boiling point hydrocarbons, C 10 8 parts of primary alcohol, 6 parts of secondary o...

Embodiment 2

[0107] A flotation type tungsten raw material extraction full wet smelting process, according to the above process and method to produce ammonium paratungstate products, wherein:

[0108] Leaching process: the leaching agent is sodium hydroxide, and the defoaming agent is castor oil (the mass ratio of the defoaming agent to the flotation type tungsten raw material is 1:1×10 8 ), leaching for 7 hours at 120°C.

[0109] Solid-liquid separation process: vacuum filtration separation method is adopted.

[0110] Purification process: The purifiers are magnesium sulfate and magnesium oxide, which are returned to the leaching process before purifying the slag.

[0111] Sulfurization acid adjustment and molybdenum removal process: the molybdenum removal agent is sodium sulfide and sodium hydrosulfide.

[0112] Extraction process: two-stage countercurrent extraction, the extracted organic phase includes 6 parts of tridecylamine, 80 parts of high boiling point hydrocarbons, C 12 10 pa...

Embodiment 3

[0116] A flotation type tungsten raw material extraction full wet smelting process, according to the above process and method to produce ammonium paratungstate products, wherein:

[0117] Grinding and crushing process of flotation-type tungsten raw materials: use mechanical crushing method to grind and crush tungsten mineral raw materials until the mass percentage of mineral particle size ≤ 45 microns is ≥ 95%.

[0118] Leaching process: the leaching agent is sodium fluoride, the defoamer is oleic acid (the mass ratio of defoamer to flotation type tungsten raw material is 1:1×10 7 ), leaching at 150°C for 6 hours,

[0119] Solid-liquid separation process: adopt filter press separation method.

[0120] Adding defoamer process: Add trioctylamine and octanol defoamer (amount of 75mg / L) with a mass ratio of 1:1 to the obtained sodium tungstate solution, and make the defoamer in sodium tungstate by stirring dispersed in the solution.

[0121] Purification process: the purificati...

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Abstract

The invention relates to the technical field of metallurgical chemical industry, and provides a flotation type tungsten raw material extraction all-wet-process smelting process. The process comprises the steps of leaching, solid-liquid separation, purification, sulfuration, acid regulation and molybdenum removal, extraction, reextraction and crystallization to produce an ammonium paratungstate product, wherein the leaching process comprises the following steps of uniformly mixing the flotation type tungsten raw material with a leaching agent, water and/or washing water and a defoaming agent in a leaching reactor, and leaching for 0.1-8 hours at the temperature of 100-250 DEG C to obtain mixed slurry of a sodium tungstate solution and leaching residues; and the defoaming agent comprises one or more of an organic silicon defoaming agent, castor oil, aldehydes, alcohols, ketones, kerosene and tertiary amine. The defoaming agent is added in the leaching process, so that the influence of a surfactant in the sodium tungstate solution on the production process can be effectively inhibited, the feed liquid conveying time is effectively shortened, a better solution purification effect is obtained, a high-quality ammonium paratungstate product is obtained, and production accidents can be reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgy and chemical industry, in particular to a flotation-type tungsten raw material extraction full-wet smelting process. [0002] In this specification, the term "flotation-type tungsten raw material" refers to tungsten mineral raw material suitable for smelting obtained by flotation. Flotation is a beneficiation method, which refers to the beneficiation process of floating solid minerals from the water suspension (ore slurry) according to the differences in the physical and chemical properties of the mineral surface. Flotation-type tungsten raw materials include scheelite, tungsten slime, etc. [0003] The term "regeneration" refers to the ionization of the extractant in the acid. [0004] The term "loaded" means that the tertiary amine in the extracted organic phase is regenerated with sulfuric acid and exists in the form of tungstate. [0005] The term "unloaded" means that the tertiary amine i...

Claims

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Application Information

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IPC IPC(8): C22B34/36C22B3/04C22B3/44C22B3/28B01D19/04
CPCC22B34/36C22B3/04C22B3/44B01D19/04Y02P10/20
Inventor 徐双李继红卢瑞平汪壮瀚谢中华余春荣黄亮
Owner 江钨世泰科钨品有限公司
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