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Mineral separation technique for fine-grain tungsten-tin associated minerals

An associated ore, tungsten-tin technology, applied in flotation, magnetic separation, solid separation, etc., can solve the problem of low recovery rate of ore dressing, and achieve the effect of improving the recovery rate

Inactive Publication Date: 2018-01-23
ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem of low beneficiation recovery rate of fine-grained wolframite and cassiterite in the conventional beneficiation process, and provides a fine-grained tungsten-tin co-associated ore beneficiation process

Method used

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  • Mineral separation technique for fine-grain tungsten-tin associated minerals
  • Mineral separation technique for fine-grain tungsten-tin associated minerals
  • Mineral separation technique for fine-grain tungsten-tin associated minerals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A fine-grained tungsten-tin co-associated ore beneficiation process, the specific steps are as follows:

[0020] (1) The secondary slime part produced during the crushing and grinding process of quartz vein-type tungsten-tin co-associated ore or the tailings part after flotation of sulfide ore with polymetallic ore is crushed to a particle size of less than 0.03mm;

[0021] (2) Gravity separation and enrichment: use at least one of shaking table, centrifugal concentrator, Nelson concentrator, Falcon concentrator, hydrocyclone, and spiral chute to carry out gravity separation and tailings, and the amount of gangue tailings in 60%-85%;

[0022] (3) Reverse flotation desilication: the regulator is 20-500g / t of sodium carbonate solution with a mass concentration of 1-5%, 10-200g / t of a starch solution with a mass concentration of 1-5%, and the collector is mass One or several of the etheramine solution with a concentration of 1-5%, the dodecylamine solution with a mass con...

Embodiment 2

[0026] A fine-grained tungsten-tin co-associated ore beneficiation process, the specific steps are as follows:

[0027] (1) The secondary slime part produced during the crushing and grinding process of quartz vein-type tungsten-tin co-associated ore or the tailings part after flotation of sulfide ore with polymetallic ore is crushed to a particle size of less than 0.03mm;

[0028] (2) Gravity enrichment: use a shaker to carry out gravity separation and throw tailings, and the amount of gangue tailings is 60%;

[0029] (3) Reverse flotation desulfurization: primary roughing, the pulp concentration is 25%, the activator uses sulfuric acid solution with a mass concentration of 1%, the dosage is 10g / t, pH=6, and the collector uses a mass concentration of 1% Butyl xanthate solution, the dosage is 1g / t, the foaming agent is 1% methyl isobutyl carbinol solution, the dosage is 1g / t, and the flotation time is 3 minutes;

[0030] (4) Reverse flotation desiliconization: primary roughing...

Embodiment 3

[0034] A fine-grained tungsten-tin co-associated ore beneficiation process, the specific steps are as follows:

[0035] (1) The secondary slime part produced during the crushing and grinding process of quartz vein-type tungsten-tin co-associated ore or the tailings part after flotation of sulfide ore with polymetallic ore is crushed to a particle size of less than 0.03mm;

[0036] (2) Gravity separation and enrichment: adopt centrifugal concentrator to carry out gravity separation and throw tailings, and the amount of gangue tailings is 65%;

[0037] (3) Reverse flotation desulfurization: primary roughing, the pulp concentration is 26%, the activator uses sulfuric acid solution with a mass concentration of 2%, the dosage is 50g / t, pH=5.8, and the collector uses 2% sulfuric acid solution Butyl xanthate solution, the dosage is 10g / t, the foaming agent adopts pinitol oil solution with a mass concentration of 2%, the dosage is 5g / t, and the flotation time is 4 minutes;

[0038] (...

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Abstract

The invention discloses a mineral separation technique for fine-grain tungsten-tin associated minerals. The mineral separation technique includes the following specific steps that (1) secondary slurrygenerated by quartz vein type tungsten-tin associated minerals or tailings generated by floatation of sulphide ore of polymetallic ore are crushed; (2) enrichment via gravity concentration is carriedout, specifically, tailings are discarded via gravity concentration, and the gangue tailing discarding amount is 60%-85%; (3) silicone is removed through reverse floatation, specifically, regulatorsinclude a sodium carbonate solution and a starch solution, and collecting agents include one or more of an ether amine solution, a lauryl amine solution and an octadecylamine solution; and (4) tungsten-tin minerals are separated through magnetic separation, specifically, concentrate obtained after magnetic separation is wolframite, and tailings obtained after magnetic separation are tinstone concentrate. For fine-grain tungsten-tin minerals, the technique that gravity-concentration tailing discarding is adopted for pre-selection, sulfur and silicon are removed through reverse floatation, and wolframite and tinstone are separated through magnetic separation is utilized, on the premise of guaranteeing the concentrate grade, the recovery rates for wolframite and tinstone are increased, and the mineral separation technique is mainly applied to comprehensive recovery of tungsten and tin in tungsten-tin associated minerals and nonferrous-metal associated tungsten-tin minerals.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal beneficiation, and in particular relates to a beneficiation process of fine-grained tungsten-tin co-associated ore. Background technique [0002] Tungsten-tin ore is brittle, and it is easy to over-grind during the grinding process. It is difficult to recover fine-scale tungsten-tin ore. When processing quartz vein-type tungsten-tin ore, stage crushing-stage separation can be used to recover coarse particles. To obtain a better separation index, the combined process of re-separation and magnetic separation is often used for the fine-grained part, and the separation effect is not ideal. When dealing with ores such as tungsten and tin associated with polymetallic ores, due to the need to take into account the recovery of sulfide ores (such as containing copper, lead, zinc, etc.), it is necessary to control the grinding fineness at -200 mesh and the content accounts for 50%~70%. First flota...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B9/00B03C1/30B03D1/02
Inventor 张红新李洪潮吕振福冯安生郭珍旭
Owner ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD
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