Magnet-flotation combined beneficiation technology of spodumene

A spodumene and process technology, applied in the field of spodumene magnetic-flotation beneficiation, can solve the problems of unsatisfactory recovery rate, etc., and achieve the effects of strong resistance to fine mud interference, excellent beneficiation index, and overcoming large gaps.

Active Publication Date: 2019-01-01
SINOSTEEL MAANSHAN INST OF MINING RES +1
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  • Description
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AI Technical Summary

Problems solved by technology

The result shows: 450g / t sodium carbonate+300g / t sodium hydroxide is added in the mill, and ore is ground to-0.076mm and accounts for 70%, and sloughs off-0.15mm particle grade ore slime, with sodium carbonate, sodium hydroxide, Calcium chloride is used as a joint regulator, modified oleic acid is used as a collector, and Li 2 Spodumene concentrate with an O grade of 4.45% and a recovery rate of 74.17%, the concentrate Li 2 O grade increased by 0.39 percentage points compared with the on-site process, and the recovery rate increased by 12.59 percentage points; the spodumene flotation tailings were subjected to weak magnetic separation-high gradient strong magnetic separation to remove iron and obtained Fe 2 Feldspar concentrate with O3 content of 0.18%, but the concentrate Li 2 O grade and recovery rate are still not ideal

Method used

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  • Magnet-flotation combined beneficiation technology of spodumene

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 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.

[0026] The collector adopts the compound of MA, hydroxylamine compound and oleic acid, and the ratio of MA, hydroxylamine compound and oleic acid is 7:1.5:1.5.

[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 modifie...

Embodiment 2

[0030] The collector adopts the compound of MA, hydroxylamine compound and oleic acid, and the ratio of MA, hydroxylamine compound and oleic acid is 6.5:2.3:1.2.

[0031] 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.

[0032] 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 2The dosage is 150g / t, the dosage of collector i...

Embodiment 3

[0035] The collector adopts the compound of MA, hydroxylamine compound and oleic acid, and the ratio of MA, hydroxylamine compound and oleic acid is 6.7:1.8:1.5.

[0036] 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.

[0037] 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 dosag...

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Abstract

The invention discloses a magnet-flotation combined beneficiation technology of spodumene. Spodumene ore is subjected to smashing and grinding. Ore pulp after grinding is sequentially subjected to lowintensity magnetic separation and high intensity magnetic separation to respectively obtain low intensity magnetic concentrated ore and high intensity magnetic concentrated ore. The discharged high intensity magnetic tailing ore is subjected to concentration and desliming, and is provided for flotation operation. Procedures of the flotation operation comprises one time of roughing, two times of scavenging and two times of concentrating. A collecting agent adopts compound of Fatty calcium, hydroxylamine compound and oleic acid, wherein the ratio is (6-7):(2.0-2.5):(1.0-1.5). The Li2O grade inthe final lithium concentrate is as high as 5.8-6.4%, and the recycling rate is 79.0-88%. The beneficiation technology is simple, stable and reliable, applicability is high, the laboratory index and the industrial application index are in agreement with each other, and the disadvantage of a big gap between the industrial application index and the laboratory index in the spodumene beneficiation technology is overcome. The collecting agent is excellent in selectivity, high in collecting performance, and is environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of spodumene beneficiation, in particular to a magnetic-flotation method for spodumene. Background technique [0002] Lithium has been widely used in metallurgy, aviation, aerospace and other fields, especially in lithium batteries and controllable thermonuclear fusion reactors. In nature, lithium minerals mainly exist in the form of spodumene, lepidolite and phosphate aluminite. Among them, spodumene, as the raw material of lithium chemical products, is widely used in lithium chemical industry, glass and ceramic industries, and enjoys the reputation of "industrial monosodium glutamate". 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...

Claims

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Application Information

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