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Method for extracting metal ions from fatty acids

A technology of metal ions and rare earth metal ions, which is applied in the direction of improving process efficiency, can solve problems such as pollution, difficult operation, and low extraction rate of metal ions, and achieve the effects of good biocompatibility, easy transportation, and easy degradation

Active Publication Date: 2019-11-05
厦门熙途科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for extracting metal ions with fatty acids, so as to solve the problems of low extraction rate of metal ions, difficult operation and serious pollution.

Method used

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  • Method for extracting metal ions from fatty acids
  • Method for extracting metal ions from fatty acids
  • Method for extracting metal ions from fatty acids

Examples

Experimental program
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Effect test

Embodiment 1

[0047] The ionic rare earth ore was taken from an ionic rare earth mine in Ganzhou, Jiangxi. The total amount of rare earth REO contained in the sample was 0.114%. Take 100g of the dried ionic rare earth ore sample and put it into the leaching column, and dissolve 0.353g of yttrium chloride in 100mL to remove In ionized water, adjust the pH value to 4-5, leach the rare earth ore in the leaching column with the prepared leaching solution, then rinse once with 50mL deionized water, and collect the leaching solution. The rare earth leaching rate obtained in this embodiment is 95%, and the ammonium sulfate leaching rate is 98% under the same conditions. Then, 3.58 g of lauric acid was ground and saponified using 2.9 mL of 5 mol / L sodium hydroxide at room temperature, and the degree of saponification of lauric acid was 80%. Mix the saponified lauric acid with the rare earth leaching solution at room temperature and fully stir for 10 minutes. After precipitation, solid-liquid separa...

Embodiment 2

[0049] The ionic rare earth ore is taken from an ionic rare earth mine in Ganzhou, Jiangxi. The total amount of REO contained in the sample is 0.114%. Take 100g of the dried ionic rare earth ore sample and put it into the leaching column, and dissolve 0.439g of lanthanum chloride in 100mL to remove In ionized water, adjust the pH value to 4-5, leach the rare earth ore in the leaching column with the prepared leaching solution, then rinse once with 50mL deionized water, and collect the leaching solution. The rare earth leaching rate obtained in this embodiment is 96%. Then, 3.58 g of lauric acid was ground and saponified using 2.9 mL of 5 mol / L sodium hydroxide at room temperature, and the degree of saponification of lauric acid was 80%. Mix the saponified lauric acid with the rare earth leaching solution at room temperature and fully stir for 10 minutes. After precipitation, solid-liquid separation is carried out to obtain the rare earth precipitate and the water phase. After ...

Embodiment 3

[0051] Grinding and saponifying 6.9g of palmitic acid with 4.3mL of 5mol / L sodium hydroxide at room temperature, the degree of saponification of palmitic acid is 80%. The rare earth leaching solution is taken from a rare earth mine in Longyan, Fujian. The composition of the rare earth leaching solution is: total concentration of rare earth It is 0.5g / L, pH=5.3, and the volume is 2L. It also contains aluminum ions and calcium ions. The specific components are shown in Table 1. The ratio of rare earth elements in the rare earth leaching solution is shown in Table 2.

[0052] Table 1. The composition of the rare earth leachate used in Example 4 of the present invention

[0053] Element total rare earth Aluminum ion calcium ion Concentration, g / L 0.5 0.00088 0.00056

[0054] Mix the saponified palmitic acid with the rare earth leaching solution at room temperature and fully stir for 10 minutes. After precipitation, separate the solid and liquid to obtai...

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Abstract

The invention relates to the field of enrichment of metal ions, and discloses a method for extracting metal ions from fatty acids. The method comprises the following steps that (1) saponification is carried out on a fatty acid extraction agent through alkali; (2) the saponification-treated fatty acid extraction agent and an extraction mother solution are mixed, react with each other, are stirred uniformly and precipitated and are then subjected to solid-liquid separation to obtain a metal precipitate, and rare-earth metal ions or non-rare-earth metal ions in the mother solution are extracted;and (3) the metal precipitate is eluted through an acid liquid, and a metal-enriched solution and a regenerative fatty acid extraction agent are obtained after liquid separation. The fatty acid extraction agent used in the method can be directly extracted from animals and plants, can be acquired from numerous sources at low price, is convenient to convey and store, good in biological compatibilityand easy to degrade and causes less pollution to water bodies, the precipitates formed in the precipitation process are large in particle size, solid-liquid separation is easy, the recovery rate of metal ions is high, the enrichment factor is large, and the fatty acids can be recycled.

Description

technical field [0001] The invention relates to the field of enrichment of metal ions, in particular to a method for extracting metal ions with fatty acids. Background technique [0002] Due to the unique properties of rare earths and their applications in high-tech fields such as luminescence, electronics and magnetism, the rare earth industry has developed rapidly in the past few decades. China is rich in rare earth resources, and its annual output accounts for more than 90% of the world's total output, especially ion-adsorption rare earth ores, which are mainly distributed in Jiangxi, Guangdong, Hunan, Guangxi, Fujian and other places in my country. Studies have found that in ion-adsorption rare earth minerals The medium and heavy rare earths found in the minerals are more than ten times more than other light rare earth rich minerals. [0003] Ionic rare earth ores have a complete distribution and are rich in medium and heavy rare earths. Their rare earth products have be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/26C22B3/04C22B59/00
CPCC22B3/04C22B59/00C22B3/26Y02P10/20
Inventor 孙晓琦倪帅男
Owner 厦门熙途科技有限公司
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