Method for extracting valuable metal from cobalt metallurgical waste

A metallurgical waste, valuable metal technology, applied in the direction of process efficiency improvement, calcium/strontium/barium sulfate, etc., can solve the problems of slow phase separation, high equipment requirements, large investment in electrolysis, etc., and achieve mild reaction conditions. , the effect of high metal recovery rate and short process flow

Inactive Publication Date: 2017-08-18
青海快驴高新技术有限公司
View PDF9 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The recovery rate of pyroprocessing is low, and the recovery rate of cobalt is less than 50%.
The N235 extraction method can separate manganese in the chloride system from metals such as zinc, cobalt and copper, but the phase separation speed is slow, the process is long, and N235 has a strong volatile odor, which is not economical.
The disadvantage of the press

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Weigh 500g of manganese-rich slag formed by cobalt hydrometallurgical P204 impurity removal solution, add 1L of water to it, stir and slurry, add 130mL of 98% concentrated sulfuric acid and 24g of sodium sulfite, react until there is no black precipitate in the solution, and the end point pH=1.8 . Calcium in the manganese-rich slag dissolves and combines with sulfate radicals to form calcium sulfate precipitates, and insoluble high-valent manganese compounds are reduced to soluble divalent manganese ions by sodium sulfite. Calcium sulfate residue and 1.64 L of calcium-removed liquid were obtained after filtration. The weight of calcium sulfate slag after drying is 29.3g, and the composition is: Ca 24.52%; Cu 0.005%; Mn 0.10%; Co 0.0079%; Zn 0.0025%. The liquid composition after decalcification is: Ca0.76g / L; Cu 5.57g / L; Mn 59.12g / L; Co 6.26g / L; Zn 3.13g / L.

[0053] Lix984 was used to extract and remove copper from the decalcified solution. The volume fraction of Lix98...

Embodiment 2

[0058] Measure 2L of cobalt hydrometallurgy P204 impurity removal solution, its composition is copper 5.21g / L, manganese 49.34g / L, zinc 3.03g / L, calcium 7.53g / L, cobalt 7.62g / L, Al 0.66g / L L; Mg 0.019g / L. Add 242 g of sodium sulfate crystals to the impurity removal liquid, react for 2 hours, and then filter to obtain calcium sulfate slag and calcium-removed liquid. The weight of calcium sulfate slag after drying is 67.4g, and the composition is: Ca 23.2%; Cu 0.006%; Mn 0.11%; Co 0.0064%; Zn 0.0031%. The liquid composition after decalcification is: Ca 0.73g / L; Cu 5.11g / L; Mn 49.01g / L; Co 7.55g / L; Zn 2.98g / L.

[0059] Heat the decalcified liquid to 80°C, add a sodium carbonate solution with a concentration of 200g / L to adjust the pH to 4.9, filter to obtain copper carbonate precipitate and filtrate, add 2g of manganese powder to the filtrate, react for 2 hours, and then filter to obtain copper powder And after copper removal. The composition of the solution after copper remov...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for extracting valuable metal from cobalt metallurgical waste. The method comprises the following steps of S1, calcium removal, S2, copper separation, S3, calcium and magnesium removal, and S4 zinc separation. The method has the beneficial effects that 1, impurity removal liquid generated by the impurity removal procedure of cobalt wet metallurgy P204 or the valuable metal in manganese-rich slag after the impurity removal liquid is precipitated can be sufficiently utilized; 2, the metal recovery rate of the method is high, the recovery rate of calcium can reach 85% or over, and the recovery rates of copper, cobalt, manganese and zinc can reach 90% or over; 3, the technological process of the method is short and only has four steps, and applied raw and auxiliary materials are easy to obtain and low in cost; and 4, the technological process does not involve high temperature or high pressure, reaction conditions are mild, and the number of potential safety hazards is small. Calcium sulfate generated through the method can serve as a raw material for production of cement, a small amount of generated calcium fluoride slag and a small amount of generated magnesium fluoride slag can be sent to a fluorination plant to serve as raw materials, and environmental friendliness is achieved.

Description

technical field [0001] The invention relates to the technical field of extracting valuable metals, in particular to a method for extracting valuable metals from cobalt metallurgical waste. Background technique [0002] The commonly used cathode materials for lithium-ion batteries include lithium cobalt oxide, lithium iron phosphate, and nickel-cobalt lithium manganate ternary materials. Nickel-cobalt lithium manganate ternary cathode material has the characteristics of moderate price, large capacity, long cycle life, good safety, and excellent comprehensive performance. It is one of the main directions for the development of lithium-ion battery cathode materials in the future. The preparation method of nickel-cobalt-lithium-manganese oxide ternary oxide is as follows: nickel salt, cobalt salt and manganese salt are formulated into a solution in a specific proportion, and then nickel-cobalt-manganese ions are co-precipitated into nickel-cobalt-manganese hydroxide with sodium ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22B7/00C01F11/46C04B11/26C22B47/00C22B15/00C22B26/20C22B26/22C22B19/30C22B23/00
CPCC01F11/46C04B11/262C22B7/006C22B15/0084C22B19/30C22B23/0453C22B26/20C22B26/22C22B47/00Y02P10/20
Inventor 范连勇徐斌金倬敏曹果林石育林徐敏徐德国王刚林李中甫朱文会
Owner 青海快驴高新技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap