Beneficiation method for spodumene ore

A beneficiation method, spodumene technology, applied in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of resource loss, low grade lithium concentrate, etc., to overcome the large gap, stable flotation process, The effect of strong harvesting ability

Active Publication Date: 2019-01-04
SINOSTEEL MAANSHAN INST OF MINING RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the grade of lithium concentrate obtained by this method is still low, and the recovery rate is only 63.88%, and a large amount of valuable resources are lost in the tailings

Method used

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  • Beneficiation method for spodumene ore

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The test ore sample is a foreign spodumene ore, containing Li 2 O1.53%, the main mineral composition is spodumene, potassium albite, quartz, diopside, and ordinary pyroxene, followed by a small amount of muscovite, biotite, and trace amounts of tantalum niobium iron (manganese) ore.

[0027] First, the spodumene ore is crushed and ground to -0.076mm, accounting for 75%; then the ore pulp after grinding is subjected to weak magnetic separation and strong magnetic separation in turn. The strength is 796.18kA / m; then the strong magnetic tailings are concentrated and deslimed, and the deslimed amount is 3.79%; finally, the deslimed strong magnetic tailings are subjected to lithium mineral flotation, and the flotation process is a roughing, Two times of sweeping, two times of fine selection, rough selection modifier Na 2 CO 3 The dosage is 1150g / t, the dosage of NaOH is 900g / t, and the dosage of CaCl 2 The dosage is 130g / t, the dosage of collector MA is 900g / t; the dosage...

Embodiment 2

[0030] The test ore sample is a spodumene ore in China, containing Li 2 O1.50%, the main mineral composition is spodumene, potassium albite, quartz, followed by a small amount of mica.

[0031] First, the spodumene ore is crushed and ground to -0.076mm, accounting for 70%; then the ore pulp after grinding is subjected to weak magnetic separation and strong magnetic separation in turn. The strength is 796.18kA / m; then the strong magnetic tailings are concentrated and deslimed, and the deslimed amount is 3.90%; finally, the deslimed strong magnetic tailings are subjected to lithium mineral flotation, and the flotation process is a roughing, Two times of sweeping, two times of fine selection, rough selection modifier Na 2 CO 3 Dosage 1000g / t, NaOH dosage 800g / t, CaCl 2 The dosage is 150g / t, the dosage of collector MA is 1000g / t; the dosage of Sweep-NaOH is 300g / t, the dosage of collector MA is 400g / t, and the dosage of Sweeping Collector MA is 100g / t. Flotation to obtain lith...

Embodiment 3

[0034] The test ore sample is a domestic spodumene ore, and a domestic spodumene ore contains Li 2 O1.30%, the main mineral composition is spodumene, potassium albite, quartz, followed by a small amount of mica.

[0035] First, the spodumene ore is crushed and ground to -0.076mm, accounting for 80%; then the ore pulp after grinding is subjected to weak magnetic separation and strong magnetic separation in sequence. The strength of the weak magnetic separation field is 159.24kA / m, and the strong The strength is 796.18kA / m; then the strong magnetic tailings are concentrated without desliming; finally, the deslimed strong magnetic tailings are subjected to lithium mineral flotation. The flotation process is one roughing, two sweeping, two Sub-selection, coarse selection regulator Na 2 CO 3 Dosage 1200g / t, NaOH dosage 1000g / t, CaCl 2 The dosage is 100g / t, the dosage of collector MA is 800g / t; the dosage of Sweep-NaOH is 400g / t, the dosage of collector MA is 500g / t, and the dosa...

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Abstract

The invention discloses a beneficiation method for spodumene ore. The spodumene ore is crushed and ground, ore pulp obtained after ore grinding is sequentially subjected to low-intensity magnetic separation and high-intensity magnetic separation, and weak-magnetism concentrates and strong-magnetism concentrates are obtained; discharged strong-magnetism tailings are fed to the flotation operation after being subjected to concentration and desliming, and the flotation operation process includes primary roughing, secondary scavenging and secondary fine selecting; calcium fatty acid prepared through the double decomposition reaction of a sodium fatty acid soap solution and a calcium chloride water solution is adopted as a collecting agent, the Li2O grade in the finally-obtained lithium concentrate reaches up to 5.7%-6.2%, and the recycling rate is 78%-88%. According to the beneficiation method, the beneficiation technology process is simple, stability and reliability are achieved, applicability is high, and the laboratory index highly conforms to the industry application index; and the defect that in the existing spodumene ore beneficiation technology, the difference between the industry application index and the laboratory index is large is overcome; and the adopted collecting agent has excellent properties that selectivity is good, the collecting capability is high, and environment friendliness is achieved.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a spodumene beneficiation method. Background technique [0002] Lithium has been widely used in metallurgy, aviation, aerospace and other fields, especially in lithium batteries and controllable thermonuclear fusion reactors. Lithium has become an important material for long-term supply of human energy. Lithium is known as "energy metal" and "the metal that drives the world forward". Lithium batteries are the backbone of the development of the IT industry; lithium deuteride and lithium tritium are important raw materials for hydrogen bombs, and they play an important role in nuclear energy and aerospace. In addition, lithium and its compounds are also used in synthetic rubber, alloys, air conditioners, medicine, welding, etc., so the current global demand for lithium metal is very urgent. As a strategic emerging mineral raw material, spodumene is an urgen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00
CPCB03B7/00
Inventor 沈进杰骆洪振孙炳泉高春庆王海亮侯更合
Owner SINOSTEEL MAANSHAN INST OF MINING RES
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