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Composite collector, low-iron spodumene concentrate and preparation method for low-iron spodumene concentrate

A composite collector and concentrate technology, used in chemical instruments and methods, wet separation, solid separation, etc., can solve the problems of resource waste, excessive lithium, and inability to effectively capture lithium, and achieve a reduction in the content of lithium. Effect

Inactive Publication Date: 2019-05-03
GUANGDONG GUANGHUA SCI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] On the one hand, according to the spodumene concentrate produced by the existing spodumene ore flotation process, the Fe in the product 2 o 3 The content is in the range of 1.2 to 3%. Spodumene with this iron content can be used in the production of industrial lithium carbonate, but it fails to meet the impurity limit requirements for spodumene concentrate in the microcrystalline and glass-ceramic industries
On the other hand, the collector used in the preparation method of the existing low-iron spodumene concentrate has poor selectivity and collection performance, and cannot effectively capture lithium in the ore, which will make the muscovite concentrate and There is too much residual lithium in the weak magnetic impurities, resulting in a waste of resources

Method used

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  • Composite collector, low-iron spodumene concentrate and preparation method for low-iron spodumene concentrate
  • Composite collector, low-iron spodumene concentrate and preparation method for low-iron spodumene concentrate
  • Composite collector, low-iron spodumene concentrate and preparation method for low-iron spodumene concentrate

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A composite collector is formed by mixing aspartic acid, oleic acid and diesel, and the weight ratio of aspartic acid, oleic acid and diesel is 80:10:10.

[0032] See figure 1 , A method for preparing low-iron spodumene concentrate, including the following steps:

[0033] 1) Add sulfuric acid with a mass concentration of 10% to the spodumene concentrate for slurry adjustment, and the pH of the slurry after slurry adjustment is 2.

[0034] 2) Adding the regulator and the composite collector of the above-mentioned component ratio to the ore slurry for flotation to obtain muscovite concentrate and flotation tailings. The specific method of flotation is:

[0035] According to the ratio of adding 500 grams of modifier per ton of slurry, add water glass to the above slurry, stir for 10 minutes, and then add 500 grams of composite collector per ton of slurry, add the composite collector of the above component ratio, Fully agitate, perform roughing, and roughing for 5 minutes to obta...

Embodiment 2

[0044] A composite collector is formed by mixing glutamic acid, dodecanoic acid and diesel oil, and the weight ratio of the glutamic acid, dodecanoic acid and diesel oil is 90:5:5.

[0045] A preparation method of low-iron spodumene concentrate includes the following steps:

[0046] 1) Add dilute hydrochloric acid to the spodumene concentrate for slurry adjustment. After slurry adjustment, the pH of the slurry is 3.

[0047] 2) Adding the regulator and the composite collector of the above-mentioned component ratio to the ore slurry for flotation to obtain muscovite concentrate and flotation tailings. The specific method of flotation is:

[0048] According to the ratio of 1000 grams of adjusting agent per ton of slurry, add sodium hexametaphosphate to the above slurry, stir for 5 minutes, and then add 1000 grams of composite collector per ton of slurry, and add the composite collection of the above component ratio Mix well and carry out the first roughing to obtain the first crude mus...

Embodiment 3

[0057] A composite collector is formed by mixing threonine, caproic acid and diesel, and the weight ratio of threonine, caproic acid and diesel is 80:5:10.

[0058] A preparation method of low-iron spodumene concentrate includes the following steps:

[0059] 1) Add sulfuric acid with a mass concentration of 20% to the spodumene concentrate for slurry adjustment, and the pH of the slurry after slurry adjustment is 6.

[0060] 2) Adding the regulator and the composite collector of the above-mentioned component ratio to the ore slurry for flotation to obtain muscovite concentrate and flotation tailings. The specific method of flotation is:

[0061] According to the ratio of adding 1500 grams of regulator per ton of pulp, add carboxymethyl cellulose to the above pulp, stir for 10 minutes, and then add 1200 grams of composite collector per ton of pulp, and add the composite trap of the above component ratio. Collect the agent, fully stir, and perform the first roughing to obtain the first...

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Abstract

The invention relates to a composite collector, low-iron spodumene concentrate and a preparation method for low-iron spodumene concentrate. The composite collector comprises amino acid, fatty acid anddiesel oil, wherein the weight ratio of the amino acid to the fatty acid to the diesel oil is (80 to 90): (5 to 10): (5 to 10). The composite collector is capable of increasing the grade of lithium in the spodumene concentrate, free from causing the waste of lithium resources, and capable of lowering the content of iron impurity.

Description

Technical field [0001] The invention relates to the field of mineral screening, in particular to a composite collector, a low-iron spodumene concentrate and a preparation method thereof. Background technique [0002] At present, metal lithium is widely used in industries such as aerospace, rail transit, power electronics, new energy vehicles and microcrystalline ceramics, and is a key strategic resource for the development of high-tech fields. At present, the source of lithium metal is mainly from natural ores, such as spodumene, lepidolite, and phosphoponite. [0003] Spodumene is a lithium aluminum silicate ore, the chemical formula is Li 2 O.Al 2 O 3 .4SiO 2 , Where LiO 2 The theoretical amount is 8.03%. Due to its excellent thermal shock resistance, dimensional stability, thermal shock resistance and excellent chemical stability, spodumene is used in spodumene ceramics, conformal ceramics, glass ceramics, cosolvents, glazes, etc. Widely studied in many aspects. Similar to ma...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03D1/016B03D101/02B03D103/04
Inventor 刘志勇孟庆波高玉徳何名飞徐辉
Owner GUANGDONG GUANGHUA SCI TECH
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