High-efficiency spodumene beneficiation method

A technology of spodumene ore and beneficiation method, which is applied in the field of mineral processing engineering, can solve problems such as waste, poor separation index, and unreasonable utilization of lithium resources, and achieve good separation effect and reduce grinding cost.

Active Publication Date: 2019-02-01
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The separation index obtained by conventional beneficiation methods and production processes is poor, and Li in lithium concentrate 2 The O grade is generally lower than 6%, and the tailings also contain more lithium minerals. Lithium resources cannot be rationally utilized and the waste is serious

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0019] Li contained in a spodumene mine in Sichuan 2 The O grade is 1.38%, and the -0.074mm particle size after grinding accounts for 50%. Screen the spodumene slurry and classify it into two grades of +0.104mm and -0.104mm. The +0.104mm particle size spodumene ore is subjected to gravity separation and separation twice through a centrifugal concentrator to obtain a coarse-grained spodumene concentrate product, and the tailings and medium ore products obtained by gravity separation are returned to the mill. Add 2000g / t sodium carbonate and 800g / t sodium hydroxide to the -0.104mm particle size spodumene slurry, stir for 40 minutes, then add 40g / t calcium lignosulfonate and 200g / t modified oleic acid for pulping, Fine-grained spodumene concentrate products are obtained after one rough, two fine, and two sweep flotation operations. The coarse spodumene concentrate, the fine spodumene concentrate and the final tailings are respectively filtered, dried, weighed, and tested to obt...

Embodiment 2

[0022] Li contained in a spodumene mine in Australia 2 The O grade is 1.62%, and the -0.074mm particle size after grinding accounts for 60%. Screen the spodumene slurry and classify it into two grades of +0.104mm and -0.104mm. The +0.104mm particle size spodumene ore is subjected to gravity separation and separation twice through a centrifugal concentrator to obtain a coarse-grained spodumene concentrate product, and the tailings and medium ore products obtained by gravity separation are returned to the mill. Add 3000g / t sodium carbonate and 1500g / t sodium hydroxide to the spodumene pulp of -0.104mm particle size, stir for 40 minutes, then add 100g / t sodium lignosulfonate and 600g / t modified oleic acid for pulping, Fine-grained spodumene concentrate products are obtained after one rough, two fine, and two sweep flotation operations. The coarse spodumene concentrate, the fine spodumene concentrate and the final tailings are respectively filtered, dried, weighed, and tested to...

Embodiment 3

[0025] Li Contained in a Spodumene Mine in Xinjiang 2 The O grade is 1.45%, and the -0.074mm particle size after grinding accounts for 30%. Screen the spodumene slurry and classify it into two grades of +0.104mm and -0.104mm. The +0.104mm particle size spodumene ore is subjected to gravity separation and separation twice through a centrifugal concentrator to obtain a coarse-grained spodumene concentrate product, and the tailings and medium ore products obtained by gravity separation are returned to the mill. Add 1000g / t sodium carbonate and 400g / t sodium hydroxide to the spodumene pulp of -0.104mm particle size, stir for 40 minutes, then add 20g / t ammonium lignosulfonate and 400g / t modified oleic acid for pulping, Fine-grained spodumene concentrate products are obtained after one rough, two fine, and two sweep flotation operations. The coarse spodumene concentrate, the fine spodumene concentrate and the final tailings are respectively filtered, dried, weighed, and tested to ...

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Abstract

The invention discloses a high-efficiency spodumene beneficiation method which comprises the steps of screening and grading a finely ground spodumene ore pulp, feeding spodumene ores with +0.104 mm particle size into a centrifugal separator for reselecting, and separating large-particle monomer separated spodumene mineral from gangue mineral according to the density difference; and adding sodium carbonate and sodium hydroxide into the -0.104mmparticlesize spodumene ore pulp, stirring for a long time, adding lignosulfonate as a dispersing agent and a gangue inhibitor, adopting modified oleic acid as a collecting agent for flotation, so that high-efficiency sorting of the spodumene mineral can be realized. The high-efficiency spodumene beneficiation method provided by the invention adopts the combined process comprising thick-thin ore separation, and reselection-flotation, the characteristic that the requirements of different beneficiation methods for the optimal particle size of the processed ore are different is fully utilized, so that the ore grinding cost is reduced, and the defect that the spodumene thick particles are difficult to float is overcome; and the method has the advantages of the simple process, low production cost, the good spodumene sorting effect and the like.

Description

technical field [0001] The invention relates to a high-efficiency spodumene beneficiation method, which belongs to the technical field of mineral processing engineering. Background technique [0002] Lithium is known as "the new energy metal of the century" and "an important element that drives the world forward". It is an important rare metal. Lithium and its compounds can be used as heat carriers for nuclear reactors, protective materials for thermal neutrons, and moderators. As well as nuclear fuel solvents, high-energy fuels, and can also be used to produce high-performance lubricants, high-power battery materials, etc. There are two main sources of lithium: one is salt lake brine lithium; the other is ore lithium, and spodumene ore is a typical representative of ore lithium. [0003] Common beneficiation methods for spodumene ore include: flotation, gravity separation, magnetic separation, hand separation, etc. Since spodumene deposits are generally of granite pegmati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00
CPCB03B9/00
Inventor 于福顺孙永峰王儒
Owner SHANDONG UNIV OF TECH
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