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A comprehensive recovery and beneficiation method of high-calcium-magnesium-type mud-containing tungsten-molybdenum fluorite ore

A beneficiation method and high-calcium-magnesium technology, applied in flotation, solid separation and other directions, can solve the problems of difficult separation and enrichment of tungsten-molybdenum fluorite, high content of calcium-magnesium gangue and mud-containing gangue, and low recovery rate. Achieve the effect of improving resource utilization rate, improving recovery rate and reducing medium mineral rate

Active Publication Date: 2022-01-28
CHANGCHUN GOLD RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the above problems, the present invention provides a comprehensive recovery and beneficiation method of high-calcium and magnesium-type mud-containing tungsten-molybdenum fluorite ore, which is a method containing tungsten, molybdenum, fluorite, iron, calcite, dolomite, serpentine, and montmorillonite. The comprehensive recovery method of molybdenum-tungsten-calcite, scheelite, and fluorite in complex polymetallic ores such as molybdenum and kaolinite solves the problem of high content of calcium-magnesium gangue and argillaceous gangue, and the intercalation of useful minerals with fine particle size. The problem of difficult separation and enrichment of tungsten, molybdenum and fluorite in metal ores and low recovery rate, and the method of the present invention has high recovery rate of tungsten, molybdenum and fluorite, is stable, has strong adaptability, and is environmentally friendly and efficient

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  • A comprehensive recovery and beneficiation method of high-calcium-magnesium-type mud-containing tungsten-molybdenum fluorite ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Feed 1 is molybdenum sulfide flotation tailings from a tungsten-molybdenum-fluorite polymetallic mine in Henan, with Mo grade of 0.8%, WO 3 Grade 0.12%, CaF 2 The grade is 10.23% and the tailings fineness is -0.074mm containing 80%. The main useful minerals of molybdenum sulfide flotation tailings are molybdenum-tungsten calcium ore, scheelite, and fluorite; the intercalation particle size of useful minerals is mainly microfine, -0.045 accounts for 64%; calcite and dolomite are as high as 28%, and serpentine Contains 9%, montmorillonite contains 3%.

[0065] The test process is as figure 1 .

[0066] (1) Floating sulfur tailings desliming: use molybdenum sulfide flotation tailings as raw material, and use hydrocyclone to remove 6% of the mud.

[0067] (2) Classification, separation and separation: add 1500 g / t of sodium carbonate (that is, add 1500 grams of molybdenum sulfide flotation tailings dry ore in step 1 per ton, the same below) to the pulp after desliming d...

Embodiment 2

[0071] The difference from Example 1 is that the ore feeder 2 is molybdenum sulfide flotation tailings of a tungsten-molybdenum-fluorite polymetallic ore in Henan, the Mo grade is 0.76%, WO 3 Grade 0.10%, CaF 2 The grade is 9.8% and the tailings fineness is -0.074mm containing 80%. The main useful minerals of molybdenum sulfide flotation tailings are molybdenum-tungsten calcium ore, scheelite, and fluorite; the particle size of useful minerals is mainly fine, with -0.045 accounting for 47%; calcite and dolomite contain 27%, and serpentine contains 8%, montmorillonite contains 3%.

[0072] The difference in implementation is that after desliming, there are two types of floating tungsten, molybdenum and molybdenum fluorite, which are easy to separate and difficult to separate, and the floating coarse concentrate 2 after floating will not be reground before separation.

[0073] After mixed flotation, fluorite is inhibited from flotation molybdenum oxide and scheelite respective...

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Abstract

The invention belongs to the technical field of mineral processing, and in particular relates to a comprehensive recovery and beneficiation method for high-calcium-magnesium type mud-containing tungsten-molybdenum fluorite ore; Molybdenum oxide and scheelite are respectively inhibited by fluorite flotation after mixing and flotation. The separated molybdenum oxide and scheelite rough concentrate is selected to obtain molybdenum oxide and tungsten mixed concentrate. Select again to obtain high and low grade double fluorite concentrate products. Eliminate the influence of easy-mudification gangue on the flotation of tungsten and molybdenum minerals, realize the classification and flotation of easy-to-float useful minerals and difficult-to-float useful minerals, separate and separate the two types of minerals, reduce the dosage of chemicals, and improve the separation effect. , improving resource utilization.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a comprehensive recovery and beneficiation method of high-calcium-magnesium tungsten-molybdenum fluorite ore containing mud. Background technique [0002] Calcite, dolomite and other calcium-containing gangues have similar buoyancy properties to molybdenum-tungsten calcium ore, scheelite, and fluorite, which affect the enrichment of tungsten-molybdenum-fluorite. Serpentine-like layered silicate minerals have low hardness, are easy to muddy, and are prone to heterogeneous condensation with useful minerals, forming a slime cover on the surface of useful minerals; clay minerals such as montmorillonite and kaolinite are easy to hydrate Expansion increases the viscosity of the slurry, makes the flotation foam sticky, increases the fine mud cover and mechanical entrainment, and affects the concentrate grade and recovery rate. When the content of calcium magnesiu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03B1/00
CPCB03D1/00B03B1/00
Inventor 张太雄王鹏蒋雨仑高歌郝福来郑晔宋超
Owner CHANGCHUN GOLD RES INST