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Efficient flotation method for pegmatite type spodumene

A technology of spodumene and pegmatite, which is applied in the field of high-efficiency flotation of pegmatite spodumene, which can solve the problems of many times of selection, severe weathering of raw ore, and recovery rate difficult to exceed 80%, achieving low consumption , The effect of reducing operating costs

Active Publication Date: 2017-09-15
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The original ore is severely weathered and contains a lot of mud. The surface properties of spodumene and other gangue minerals are similar. Flotation separation is difficult. The recovery rate hovers around 73% for a long time, and the grade is only 5%.
[0003] Although some beneficiation methods can increase the grade of spodumene to more than 6%, the recovery rate is also difficult to exceed 80%. More importantly, these beneficiation methods need to add a large amount of collectors and require too many beneficiation times , resulting in a large amount of raw materials, energy consumption and time costs

Method used

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  • Efficient flotation method for pegmatite type spodumene

Examples

Experimental program
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Effect test

Embodiment 1

[0039] (1) Grind the pegmatite-type spodumene raw ore to a fineness of -0.074mm and account for 65%, and add Na during grinding 2 CO 3 , Na 2 CO 3 The additive amount is 800g / ton raw ore, after which desliming is carried out to discard the ore slime, and the desliming particle size is -0.02mm;

[0040] (2) add NaOH to step (1) gain, after stirring, add collector A and carry out flotation; Described collector A is made up of dodecylamine and naphthenic acid soap by mass ratio 1:2.5; In every ton of step (1) gained, the addition amount of NaOH is 800g, and the addition amount of collector A is 150g; Gained mica concentrate is separated after flotation;

[0041] (3) first add CaCl to the result of step (2) 2 , and fully stirred, then add collector B and carry out flotation roughing to obtain rough concentrate of lithium; the collector B is composed of dodecylamine and oxidized paraffin wax soap in a mass ratio of 1:12; (2) The resultant, CaCl 2 and the addition of collector...

Embodiment 2

[0050] (1) Grind the pegmatite-type spodumene ore until the fineness of -0.074mm accounts for 50%, and add Na during grinding 2 CO 3 , Na 2 CO 3 The additive amount is 800g / ton raw ore, after which desliming is carried out to discard the ore slime, and the desliming particle size is -0.02mm;

[0051] (2) add NaOH to step (1) gain, after stirring, add collector A and carry out flotation; Described collector A is made up of dodecylamine and naphthenic acid soap by mass ratio 1:2.5; In every ton of step (1) gained, the addition amount of NaOH is 600g, and the addition amount of collector A is 100g; Gained mica concentrate is separated after flotation;

[0052] (3) first add CaCl to the result of step (2) 2 , and fully stirred, then add collector B and carry out flotation roughing to obtain rough concentrate of lithium; the collector B is composed of dodecylamine and oxidized paraffin wax soap in a mass ratio of 1:12; (2) The resultant, CaCl 2 and the addition amount of coll...

Embodiment 3

[0061] (1) Grind the pegmatite-type spodumene ore until the fineness of -0.074mm accounts for 60%, and add Na during grinding 2 CO 3 , Na 2 CO 3 The additive amount is 700g / ton raw ore, after which desliming is carried out to discard the ore slime, and the desliming particle size is -0.02mm;

[0062] (2) add NaOH to step (1) gain, after stirring, add collector A and carry out flotation; Described collector A is made up of dodecylamine and naphthenic acid soap by mass ratio 1:2.5; In every ton of step (1) gained, the addition amount of NaOH is 1000g, and the addition amount of collector A is 200g; Gained mica concentrate is separated after flotation;

[0063] (3) first add CaCl to the result of step (2) 2 , and fully stirred, then add collector B and carry out flotation roughing to obtain rough concentrate of lithium; the collector B is composed of dodecylamine and oxidized paraffin wax soap in a mass ratio of 1:12; (2) The resultant, CaCl 2 and the addition of collector ...

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Abstract

The invention provides an efficient flotation method for pegmatite type spodumene and belongs to the technical field of beneficiation engineering. A two-stage ore grinding flotation method is adopted; after the first stage of ore grinding is conducted, desliming, mica flotation and spodumene roughing work are conducted; and in the second stage of ore grinding, rough concentrates obtained after spodumene roughing is ground again, the regrinding amount is small, and ore grinding electric consumption and cost are greatly saved. On the base, a collecting agent adopted during mica flotation is a mixed collecting agent composed of lauryl amine and naphthenic soap, and a collecting agent adopted during lithium coarse ore flotation is a mixed collecting agent composed of lauryl amine and oxidized paraffin soap. The grade of Li2O obtained through the method can reach 6.20%, and the recovery rate can reach 87.34%. By means of the method, high-grade lithium concentrates can be obtained, in addition, the good recovery rate is achieved, meanwhile, the dosage of a flotation reagent is small, the regrinding amount is small, only two times of selection operation are needed, and good technical effects and economic benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of mineral processing engineering, and in particular relates to a method for high-efficiency flotation of pegmatite-type spodumene. Background technique [0002] Western Sichuan is famous for its pegmatite veins, forming large and extra-large lithium deposits, such as the Kangding methyl carba lithium beryllium mine and the Maerkang lithium mine. More than 60% of the total lithium resources, ranking first in the country. However, due to the complex composition of the rare metal associated ore, the main useful mineral is spodumene, associated with beryl (beryllium) and tantalum-niobite, and the main gangue minerals are feldspar, quartz, and mica. The original ore is severely weathered and contains a lot of mud. The surface properties of spodumene and other gangue minerals are similar. Flotation separation is difficult. The recovery rate hovers around 73% for a long time, and the grade is only 5%. [0003] A...

Claims

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Application Information

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IPC IPC(8): B03B9/00B03B7/00B03D1/01B03D101/02B03D103/04
CPCB03B7/00B03B9/00B03D1/01B03D2201/02B03D2203/04
Inventor 徐龙华卢忠远巫侯琴田佳彭铁锋翟启林
Owner SOUTHWEAT UNIV OF SCI & TECH
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