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Selection method for molybdenum and tungsten oxide mixed rough concentrate

A technology of mixing concentrate and molybdenum oxide, which is applied in chemical instruments and methods, flotation, wet separation, etc., can solve the problems of easy inclusion and entrainment, deterioration of foam flotation index, poor flotation separation effect and difficult processing, etc. Achieve the effects of improving separation efficiency, recovery rate and concentrate quality

Inactive Publication Date: 2011-10-05
中铁资源集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current situation of the enrichment production of molybdenum oxide ore is to adopt the beneficiation process of preferentially floating sulfide ore and then flotation oxidized ore. A large number of production practices show that the separation effect of molybdenum and tungsten ore in the oxidized part is poor, due to the silicon content in the ore. Most of the calcium-containing gangue minerals have low hardness, and they are preferentially crushed in the grinding process to form ore sludge, which is easy to be mixed and entrained during flotation, thus deteriorating the foam flotation index, resulting in poor flotation separation effect and difficult to meet the needs of further processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The raw material is taken from Shengyuan Mining Henan Sanmenxia Chemical Plant, molybdenum oxide and tungsten coarse concentrate molybdenum and tungsten content Mo5.27%, WO 3 1.34%, grind molybdenum and tungsten oxide raw ore to -0.074mm, accounting for 60%, and carry out flotation; combine the use of hydrocyclone classification, cyclone screen, vibrating screen and water flow classifier to classify the obtained mineral particles, Those larger than 0.031mm are coarse-grained grades, and those smaller than or equal to 0.031mm are fine-grained grades. Among them, the coarse-grained mineral particles larger than 0.031mm are heated to 95°C to adjust the medicine (the adjustment agent is a mixture of water glass, sodium hydroxide, and sodium sulfide, and the mass ratio is water glass: sodium hydroxide: sodium sulfide = 6: 2: 1) After that, the indicators obtained from the concentrate plan are better, and the technical indicators obtained from the test are: concentrate grade...

Embodiment 2

[0026] The raw material is taken from a molybdenum oxide ore dressing plant in Inner Mongolia, the molybdenum and tungsten oxide coarse concentrate molybdenum and tungsten content Mo4.96%, WO 3 1.21%, grind molybdenum and tungsten oxide raw ore to -0.074mm, accounting for 60%, and carry out flotation; combine the use of hydrocyclone classification, cyclone screen, vibrating screen and water flow classifier to classify the obtained mineral particles, Those larger than 0.031mm are coarse-grained grades, and those smaller than or equal to 0.031mm are fine-grained grades. Among them, the coarse-grained mineral particles larger than 0.031mm are heated to 90°C to adjust the medicine (the adjustment agent is a mixture of water glass, sodium hydroxide, and sodium sulfide, and the mass ratio is water glass: sodium hydroxide: sodium sulfide = 4: 2: 1) After that, the indicators obtained from the concentrate plan are better, and the technical indicators obtained from the test are: conce...

Embodiment 3

[0028] The raw material is taken from a molybdenum and tungsten ore dressing plant in Ejina Banner, molybdenum and tungsten oxide crude concentrate molybdenum and tungsten content Mo6.21%, WO 3 2.34%, grind molybdenum and tungsten oxide raw ore to -0.074mm, accounting for 60%, and carry out flotation; combine the use of hydrocyclone classification, cyclone screen, vibrating screen and water flow classifier to classify the obtained mineral particles, Those larger than 0.031mm are coarse-grained grades, and those smaller than or equal to 0.031mm are fine-grained grades. Among them, the coarse-grained mineral particles larger than 0.031mm are heated to 92°C to adjust the medicine (the adjustment agent is a mixture of water glass, sodium hydroxide, and sodium sulfide, and the mass ratio is water glass: sodium hydroxide: sodium sulfide = 4: 2: 2) After that, the indicators obtained from the concentrated ore plan are better, and the technical indicators obtained from the test are: ...

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Abstract

The invention discloses an ore dressing method for molybdenum and tungsten oxide mixed rough concentrate. The ore dressing method is characterized by comprising the following steps of: 1) grinding raw molybdenum and tungsten oxide ore till the ore with the diameter of 0.074 millimeter accounts for 60 percent, and performing flotation; 2) grading the molybdenum and tungsten rough concentrate obtained in the step 1) according to the grain diameter, wherein the ore with diameter of more than 0.031 millimeter belongs to the rough grain level, and the ore with diameter of less than or equal to 0.031 millimeter belongs to the fine grain level; and 3) heating the rough ore obtained in the step 2) to the temperature of between 90 and 95 DEG C, adding a modifier, and performing flotation to obtain molybdenum and tungsten mixed ore concentrate. By treating the ore grains of different granularity by grading respectively, regulating the reagent system and improving the separation temperature and the like to create a flotation environment adaptive to the rough grain level and treating the ore of the fine grain level by a wet metallurgy process, the separation efficiency is improved, and the recovery rate and the ore concentrate quality of the molybdenum and tungsten oxide mixed ore concentrate are effectively improved.

Description

technical field [0001] The invention relates to the field of beneficiation, in particular to a method for beneficiating molybdenum and tungsten oxide mixed rough concentrate. Background technique [0002] Molybdenum is an important strategic rare metal. With the development of science and technology, its position in national economic construction and social development has become increasingly prominent. According to the latest statistics of the International Molybdenum Association, the global molybdenum consumption structure (excluding the application of scrap steel) in 2009 is: construction engineering steel 37%, stainless steel 22%, alloy tool steel / high-speed steel 9%, cast iron / cast steel 7%, super Alloy 4%, chemical industry 15%, molybdenum metal 6%, the main field is the steel industry, its consumption accounts for 79% of the total. With the development of the world steel industry, the consumption of molybdenum is also rising. my country has become the main force to ...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/00
Inventor 张艳娇王洪杰邵伟华程新朝杨菊代世武刘杰
Owner 中铁资源集团有限公司
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