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Beneficiation method of lithium ore

A beneficiation method and technology for lithium ore, which can be used in flotation, solid separation, etc., and can solve problems such as cumbersome beneficiation process.

Active Publication Date: 2014-07-23
HUNAN RES INST FOR NONFERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the cumbersome beneficiation process of existing complex lithium-containing ore resources, produce lithium-containing mixed concentrates suitable for subsequent smelting treatment, and reduce energy consumption in the process of lithium resource processing

Method used

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Examples

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Effect test

Embodiment 1

[0022] The raw ore of a pegmatite lithium mine in China contains Li 2 O1.52%, the main lithium-containing minerals are spodumene, lepidolite and iron lepidolite, etc., and the main gangue minerals are quartz, plagioclase, microcline, etc.

[0023] The raw ore is crushed and ground to -0.074mm to account for 72%, and the pulp concentration is 40%, then NaOH is added to pH 12 and mechanically stirred and scrubbed for 45 minutes. The pulp after stirring and scrubbing is first concentrated and dehydrated to a pulp concentration of 60%, and then added with clean water to re-adjust the pulp to obtain a pulp concentration of 35% and a pH of 10.

[0024] The ore pulp enters the flotation operation after readjustment, and the flotation operation is one roughing, the second sweeping and the third beneficiation. For the roughing operation, first add 100g / t of benzotriazole, stir for 2 minutes, then add 150g / t of tall oil and stir for 5 minutes, then carry out the roughing operation, and...

Embodiment 2

[0028] The raw ore of a pegmatite lithium ore contains Li 2 O1.05%, the main lithium-containing minerals are spodumene, lepidolite and iron lepidolite, etc., and the main gangue minerals are quartz, feldspar, etc.

[0029] The raw ore is crushed and ground to -0.074mm to account for 80%, and the pulp concentration is 40%, then NaOH is added to pH 12 and mechanically stirred and scrubbed for 45 minutes. The pulp after stirring and scrubbing is first concentrated and dehydrated to a pulp concentration of 58%, and then added with clean water to re-adjust the pulp to obtain a pulp concentration of 38% and a pH of 9. The ore pulp enters the flotation operation after readjustment, and the flotation operation is one roughing, the second sweeping and the third beneficiation. For the roughing operation, first add 80g / t of benzotriazole, stir for 2 minutes, then add 120g / t of tall oil and stir for 5 minutes, then carry out the roughing operation, and the flotation time is 3 minutes; th...

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Abstract

The invention discloses a beneficiation method of lithium ore. In order to resolve the problems of a beneficiation process used for recycling lithium from complex pegmatite lithium ore at present in China, a process of bulk flotation of spodumene and lepidolite is developed, benzotriazole serves as an auxiliary collector, and tall oil serves as a collector. Compared with a common process that flotation of the lepidolite is carried out firstly, and then the spodumene is selected after desliming for flotation of the complex pegmatite lithium ore at present, the beneficiation method of the lithium ore has the advantages of being simple in process, low in processing cost, high in adaptability to raw ore, more stable and controllable in process and the like, and provides a more efficient process used for recycling lithium resources from the complex pegmatite lithium ore.

Description

technical field [0001] The patent of the invention belongs to the field of mineral processing, and specifically relates to the field of raw material processing of lithium-containing ores. Background technique [0002] At this stage, the main method of smelting technology for extracting lithium compounds from lithium concentrates in my country is the lime method, and lithium concentrates containing spodumene and lepidolite can be smelted by the lime method at the same time. [0003] Lithium ore resources in my country are mostly associated with pegmatite deposits. Most ores contain lithium-containing minerals such as spodumene, lepidolite and iron lepidolite, all of which belong to complex and difficult-to-handle pegmatite lithium deposits. Due to the large difference in buoyancy of various lithium-containing minerals such as lepidolite and spodumene in complex pegmatite lithium ores, and spodumene with poor buoyancy is easily affected by impurity ions such as soluble salts i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00
Inventor 陈代雄曾惠明杨建文李小健贺春明董艳红祁忠旭
Owner HUNAN RES INST FOR NONFERROUS METALS
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