Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for extracting nickel, cobalt and iron from low-grade laterite nickel ore

A laterite nickel ore and low-grade technology, applied in the fields of cobalt, iron, and nickel extraction, to achieve good economic benefits, high product quality, and simple operation

Inactive Publication Date: 2020-04-14
JINCHUAN GROUP LIMITED
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the existing technology, the present invention provides a hydrometallurgical method for extracting nickel, cobalt and iron by sulfuric acid leaching low-grade laterite nickel ore with short flow, small equipment volume, simple operation, high product quality and good economic benefits

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for extracting nickel, cobalt and iron from low-grade laterite nickel ore
  • Method for extracting nickel, cobalt and iron from low-grade laterite nickel ore
  • Method for extracting nickel, cobalt and iron from low-grade laterite nickel ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 500kg of lateritic nickel ore in the transition layer of Saibuku and add water to prepare the first pulp with a mass percentage content of 50%. The first pulp is heated to 70°C, 600kg of concentrated sulfuric acid is weighed and heated to 150°C. Sulfuric acid was mixed and leached at normal pressure for 1 hour. After leaching at normal pressure, 1000 kg of water was added for dilution. The dilution and stirring time was 0.5 h. After liquid-solid separation, 1350 L of normal pressure leaching solution and 128 kg of normal pressure leaching residue were obtained.

[0027]Take 1000kg of Sebuku limonite layer laterite nickel ore and add water to prepare the second pulp with a mass percentage of 50%. The temperature of the mixture obtained by mixing the second pulp with 1350L normal pressure leachate is raised from 30°C to 185°C after a heat exchange. ℃, and then heated the mixture to 235℃ with 270℃ high-pressure steam, and kept it warm for 1h; the heated mixture was rea...

Embodiment 2

[0032] Take 500kg of Philippine transition layer laterite nickel ore and add water to prepare the first pulp with a mass percentage of 50%, heat the first pulp to 80°C, weigh 650kg of concentrated sulfuric acid and heat to 130°C, mix the first pulp with concentrated sulfuric acid Afterwards, carry out atmospheric pressure leaching for 50 minutes, add 1000 kg of water to dilute after normal pressure leaching, dilute and stir for 40 minutes, and obtain 1420 L of normal pressure leaching liquid and 163 kg of normal pressure leaching residue after liquid-solid separation.

[0033] Take 1000kg Philippine limonite laterite nickel ore and add water to prepare the second pulp with a mass percentage of 50%. The temperature of the mixture obtained by mixing the second pulp with 1420L normal pressure leachate is raised from 30°C to 190°C after a heat exchange. Then the mixture was heated to 240°C with 270°C high-pressure steam, and kept for 1 hour; the heated mixture was reacted in an aut...

Embodiment 3

[0038] Take 500kg of Indonesian transition layer laterite nickel ore and add water to prepare the first pulp with a mass percentage of 50%, heat the first pulp to 65°C, weigh 625kg of concentrated sulfuric acid and heat to 140°C, mix the first pulp with concentrated sulfuric acid Afterwards, carry out atmospheric pressure leaching for 30 minutes, add 1000 kg of water to dilute after normal pressure leaching, and dilute and stir for 50 minutes, and obtain 1470 L of normal pressure leaching liquid and 140 kg of normal pressure leaching residue after liquid-solid separation.

[0039] Take 1000kg of Indonesian limonite laterite nickel ore and add water to prepare the second pulp with a mass percentage of 50%. The temperature of the mixture obtained by mixing the second pulp with 1470L normal pressure leachate is raised from 30°C to 200°C after a heat exchange. Then the mixture was heated to 250°C with 270°C high-pressure steam, and kept for 1 hour; the heated mixture was reacted in...

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 nickel, cobalt and iron from low-grade laterite nickel ore. Laterite nickel ore on a transition layer and laterite nickel ore on a limonite layer are processed respectively, and the iron grade of produced iron concentrate reaches 60-65%; and meanwhile, after a resin adsorption technology is adopted and evaporation, concentrating and crystallizing areperformed, a nickel sulfate product containing 20-23% of nickel and a cobalt sulfate product containing 1-2.2% of cobalt are produced and can be used as raw materials for battery production. Accordingto the method, the economic benefit of a laterite nickel ore wet smelting process technology is greatly increased, it is achieved that a cold material before reacting exchanges heat with a hot material after reacting through a heat exchanger, energy consumption is reduced, and in addition, the technological process is simplified.

Description

technical field [0001] The invention relates to the technical field of hydrometallurgy technology, in particular to a method for extracting nickel, cobalt and iron from low-grade laterite nickel ore. Background technique [0002] With the continuous reduction of nickel sulfide ore resources, laterite nickel ore will be used as the main raw material for the production of nickel products. Generally speaking, according to the chemical composition and mineral properties of laterite nickel ore, it can be divided into three types: limonite layer, transition layer and humus layer. The lateritic nickel ore in the humus layer has high nickel content and low iron content, so the pyro-reduction process can be used to produce ferronickel. At present, this technology is relatively mature and has good economic benefits. The lateritic nickel ore in the limonite layer has low nickel content and high iron content. If it is treated by pyrolysis, the amount of reducing agent will be large and...

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): C22B3/08C22B3/24C22B23/00C01G51/10C01G53/10C22B1/02
CPCC22B3/08C22B3/24C22B23/043C01G51/10C01G53/10C01G51/003C01G53/003C22B1/02C22B23/00Y02P10/20
Inventor 刘玉强沙滨李维舟田忠元王少华黄海丽贺来荣马永刚杜昊马海青陈小林魏建周王多江朱慧马旻锐姚菲张飞杨松林秦为涛李博文刘世和马俊
Owner JINCHUAN GROUP LIMITED
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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