Once process for extracting and separating Ni, Mg and Co from nickel sulfate solution recovered from waste nickel-hydrogen and nickel-cadmium cells
A nickel-cadmium battery and nickel sulfate technology, applied in the field of magnesium, cobalt, and nickel separation, can solve the problems of affecting equipment life, high energy consumption of reaction, corrosion, etc., and achieve the effect of small equipment investment, simple process and strong operability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0016] The sulfuric acid leaching solution of the nickel-hydrogen and / or nickel-cadmium battery positive electrode waste after the impurity removal is adjusted to a pH value of 5.0, and the organic phase is composed of di-(2-ethylhexyl)phosphonic acid mono(2-ethylhexyl) as an extractant Esters and kerosene as a diluent, the concentration of bis-(2-ethylhexyl)phosphonic acid mono(2-ethylhexyl)ester is 0.6mol / L, O / A=1 / 1, 12 stages of contact extraction , so that the magnesium is transferred to the organic phase and the nickel is retained in the water phase, and then the loaded organic phase is washed with six stages of dilute sulfuric acid. The pH value of the washing end point is controlled at 5.0, and the nickel in the organic phase is separated. Sulfuric acid is used to carry out six-stage washing of the loaded organic phase, and the pH value of the washing end point is controlled at 4.4, so that magnesium is transferred to the washing outlet liquid, and then the nickel precip...
Embodiment 2
[0020] The sulfuric acid leaching solution of the nickel-hydrogen and / or nickel-cadmium battery positive electrode waste after the impurity removal is adjusted to 4.8, and the organic phase is made of di-(2-ethylhexyl) phosphonic acid mono(2-ethylhexyl) as extractant Esters and kerosene as a diluent, the concentration of bis-(2-ethylhexyl)phosphonic acid mono(2-ethylhexyl)ester is 1.2mol / L, O / A=1 / 1, 12 stages of contact extraction , so that the magnesium is transferred to the organic phase and the nickel is retained in the water phase, and then the loaded organic phase is washed with six stages of dilute sulfuric acid. The pH value of the washing end point is controlled at 5.0, and the nickel in the organic phase is separated. Sulfuric acid is used for six-stage washing of the loaded organic phase. The pH value of the washing end point is controlled at 4.5, so that magnesium is transferred to the washing outlet liquid, and then 1N sodium hydroxide is used to recover the nickel ...
Embodiment 3
[0022] The sulfuric acid leaching solution of the nickel-hydrogen and / or nickel-cadmium battery positive electrode waste after the impurity removal is adjusted to a pH value of 4.9, and the organic phase is made of di-(2-ethylhexyl) phosphonic acid mono(2-ethylhexyl) as an extractant Esters and kerosene as a diluent, the concentration of bis-(2-ethylhexyl) phosphonic acid mono(2-ethylhexyl) ester is 1.5mol / L, using 12-stage extraction and 6-stage nickel washing, 6-stage Fractional extraction of washed magnesium, the extraction is carried out in a mixing and settling tank. The effective volume of the mixing chamber of the mixing and clarifying tank for extraction is 200L, the mixing speed is 80rpm, and the effective volume of the clarifying chamber is 600L.
[0023] Since it takes about 5 minutes for the magnesium extraction to reach equilibrium, the sum of the feed liquid flow rate and the organic phase flow rate is 40L / min, the feed liquid flow rate is 10L / min, the organic ph...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com