Synergic extraction agent and method for selectively extracting nickel in acidic nickeliferous solution through synergic extraction agent

An extraction agent and extraction technology, applied in the field of chemical extraction, can solve problems such as complex process, high cost, and incomplete separation of impurities, and achieve the effects of short process, low cost, and low consumption of chemical reagents

Active Publication Date: 2013-12-04
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the defects of high cost, complex process and incomplete separation of impurities in the existing technology for extracting nickel from nickel-containing acidic solution. Synergistic extractant for selective extraction of nickel from acidic nickel-containing solution with various impurities

Method used

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  • Synergic extraction agent and method for selectively extracting nickel in acidic nickeliferous solution through synergic extraction agent
  • Synergic extraction agent and method for selectively extracting nickel in acidic nickeliferous solution through synergic extraction agent
  • Synergic extraction agent and method for selectively extracting nickel in acidic nickeliferous solution through synergic extraction agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Water phase material liquid: sulfuric acid leaching liquid of waste petroleum hydrogenation catalyst, which contains Ni 2+ 1.836g / L, Fe 3+ 0.179g / L, Al 3+ 33.22g / L, the pH value of the feed liquid is 3.02;

[0034] Organic phase: Prepare three organic phases with different compositions numbered 1, 2, and 3. The diluent in the organic phase is sulfonated kerosene, and the organic phase No. 1 is sulfonated with 0.20mol / L dinonylnaphthalenesulfonic acid Kerosene solution, No. 2 organic phase is sulfonated kerosene solution of 1.0mol / L 4-octyl picolinate, No. 3 organic phase is dinonyl naphthalene sulfonic acid (0.20mol / L) + 4-octyl picolinate (1.0mol / L) of sulfonated kerosene solution.

[0035] Extraction and separation: the above three organic phases are subjected to single-stage extraction under the condition that the ratio of the above three organic phases to the feed liquid (volume ratio of the organic phase to the water phase) is 1 / 1, the extraction equilibrium ti...

Embodiment 2

[0041] The aqueous phase material liquid is laterite nickel ore sulfuric acid heap leaching liquid, which contains Ni 2+ 2.45g / L, Fe 3+ 8.99g / L, Al 3+ 3.03g / L, Mn 2+ 0.41g / L, Mg 2+ 8.20g / L, Ca 2+ 0.23g / L, Cr 3+ 3.87g / L, and the pH value of the feed liquid is 2.03.

[0042] The organic phase is an aviation kerosene solution of sodium naphthalenesulfonate (0.25mol / L) + pyridine carboxylate (1.0mol / L); wherein the alkyl group R in the pyridine carboxylate 3 is 12 alkyl, R in naphthalenesulfonic acid 1 Alkyl and R 2 The alkyl groups are hexyl and 12-alkyl, respectively.

[0043] The organic phase and the feed liquid are subjected to single-stage extraction, the extraction ratio is 1 / 1, the extraction time is 10 min, and the temperature is 25°C. The experimental results are shown in Table 2.

[0044] Table 2 Extraction experiment results

[0045]

[0046]

[0047] It can be seen from Table 2 that after single-stage extraction, the extraction rate of nickel reaches ...

Embodiment 3

[0049] The aqueous phase feed solution is the same as in Example 1. The organic phase is a solution of No. 260 solvent oil of dinonylnaphthalenesulfonic acid (0.1mol / L) + decyl 4-pyridinecarboxylate (0.6mol / L).

[0050] The organic phase and the aqueous phase feed liquid are subjected to single-stage extraction, the extraction ratio is 3 / 1, the extraction time is 10 min, and the temperature is 5°C. The experimental results are shown in Table 3.

[0051] Table 3 Extraction test results

[0052]

[0053] The results show that during the extraction process, the single-stage extraction rate of nickel can reach more than 96%, iron and aluminum are basically not extracted, and the separation coefficients of Ni / Al and Ni / Fe reach 3500 and 1000 respectively, and the separation effect is good.

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Abstract

The invention discloses a synergic solvent extraction and a method for selectively extracting nickel in an acidic nickeliferous solution through the synergic extraction agent. The synergic solvent extraction is the compound of naphthalene sulfonic acid or naphthalenesulfonate and pyridine carboxylic ester; the method comprises the following steps: adopting the synergic solvent extraction to selectively extract nickel ions from the acidic nickeliferous solution, adopting mineral acid to conduct back extraction on loaded organic phase to obtain highly purified nickeliferous solution to realize effective separation of nickel ions with impurity ions of iron ions, aluminium ions, manganese ions, magnesium ions, calcium ions, chromium ions and the like. Through adoption of the method, the recovery ratio of the nickel ions is high, the effect on separating the nickel ions from impurities is good, the process is short, and industrialization is easy to realize.

Description

technical field [0001] The invention relates to a synergistic extractant and a method for selectively extracting nickel from an acidic nickel-containing solution; it belongs to the technical field of chemical extraction. Background technique [0002] Nickel is an important strategic rare metal and has a wide range of uses in industry. Hydrometallurgy in acidic system is one of the main methods to extract nickel from low-grade nickel-containing resources (such as nickel laterite ore, nickel-containing waste catalyst, nickel-molybdenum ore, electroplating sludge, etc.). In the acidic hydrometallurgical process of nickel-containing materials, acidic nickel-containing solutions containing impurities will be produced, such as nickel laterite ore sulfuric acid leaching solution, electroplating sludge sulfuric acid leaching solution, spent nickel-containing catalyst sulfuric acid leaching solution, etc. These acidic nickel-containing solutions contain not only valence metal nickel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/40C22B23/00
CPCY02P10/20
Inventor 张贵清曾理肖连生李青刚曹佐英李立冬王一舟
Owner CENT SOUTH UNIV
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