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

Process for extracting and separating nickel-phase form bone coal ore by high pressure oxygen-ammonia leaching

A high-pressure oxygen, stone coal mine technology, applied in the field of molybdenum-nickel symbiotic ore extraction of molybdenum and nickel salts, can solve the problems of environmental pollution, low molybdenum recovery rate, environmental impact, etc., and achieves the improvement of operating environment, high recovery rate, and pollution reduction. Effect

Inactive Publication Date: 2008-05-14
李锋铎
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this process are: ① Due to the large amount of SO produced during the roasting process 2 Gas, which has a serious impact on the environment; ②The recovery rate of molybdenum is low, only about 80%; ③Nickel, copper, and zinc resources have not been fully utilized; ④The operating environment for workers is harsh
[0007] CN1177012A adopts the method of roasting desulfurization and decarbonization first, then slaking with 50% sodium carbonate at 700°C, and leaching with water to obtain ammonium molybdate product. This method not only pollutes the environment seriously, but also does not make nickel an industrial product

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
  • Process for extracting and separating nickel-phase form bone coal ore by high pressure oxygen-ammonia leaching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Grind nickel-molybdenum ore containing Mo2.75%, Ni0.85% until 80% passes through a 200-mesh sieve, weigh 100g, add 25% industrial ammonia 200g, water 100g, feed oxygen, at 1.5mPa, temperature 80°C Next, react for 5 hours. Then filter, dry filter residue, slag weight 88g, analyze molybdenum nickel grade in the slag, be respectively: Mo0.1%, Ni0.05%, molybdenum, nickel slag meter leaching rate are respectively: Mo leaching rate 96.8%, Ni leaching rate 94.8%.

Embodiment 2

[0027] Grind nickel-molybdenum ore containing Mo8.4%, Ni3.32% until 80% passes through a 200 mesh sieve, weigh 100g, add 25% industrial ammonia water 300g, feed oxygen, at 3.0mPa, temperature 180°C, react 9 hours. Then filter and dry the filter residue, the residue weight is 71.6g, the grade of molybdenum and nickel in the analysis residue is: Mo0.62%, Ni0.22%, the leaching rate of molybdenum and nickel slag is respectively: Mo leaching rate 94.7%, Ni leaching rate The rate is 95.2%.

Embodiment 3

[0029] Grind 27 tons of ore to 200 mesh, the average grade of ore powder is: Mo3.02%, Ni2.47%, pulping according to the liquid-solid volume ratio of 3 / 1, the concentration of ammonia water is 14%, at 2.0mPa, the temperature is 100℃ The average reaction time is 4 hours; filter, wash the residue with water, pass the filtrate through the ammonia distillation system to recover ammonia water; then, add sulfuric acid to dissolve to pH 3.0, extract molybdenum with 10% TFA (tri-fatty amine), wash and extract molybdenum with water Saturate the organic phase, then back-extract molybdenum with ammonia water to obtain ammonium molybdate solution, acid-precipitate ammonium tetramolybdate or molybdenum acid; extract molybdenum aqueous phase with 20% P2O4 at pH 4.0 to extract copper and zinc, wash and co-extract nickel, and back-extract copper Zinc, get the by-product solution of copper and zinc sulfate, remove copper and zinc solution and extract nickel with 20% P2O4 at pH 6.0, back-extract ...

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 relates to a technology of extracting and separating nickel-molybdenum from coal mines through high-pressure oxygen-ammonia immersion. Original ores are ground into powder and then immersed into hartshorn, and then oxygen is fed to cause reaction pressure to be between 1.5mPa-3.0mPa; after reaction and filtration, obtained base solution after ammonia distilling is dissolved by acid, and then organic phase containing molybdenum and water phase containing nickel acquired through extraction and separation are purified respectively. Compared with the prior art, the technology of the invention greatly reduces the environmental pollution, and improves the comprehensive utilization rate of mineral resources, with high recovery rate of valuable metals and high production purity. A semi-commercial experiment demonstrates that the recovery of the nickel-molybdenum all reaches above 90 percent.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy and relates to a method for extracting molybdenum and nickel salts from molybdenum-nickel symbiotic ore. Background technique [0002] Metal molybdenum and nickel are important non-ferrous metals. They are not only used in metallurgical manufacture of alloy steel, but also widely used in chemical industry and other fields. Molybdenum ore has been found in many places in the world, including molybdenite, tungsten-molybdenum symbiotic and copper-molybdenum symbiotic ore, but nickel-molybdenum symbiotic ore has rarely been reported. In the 1960s in my country, it was discovered that Hunan, Guizhou, Yunnan and other places contained a large amount of nickel-molybdenum paragenetic ore. With the shortage of mineral resources, especially the rising prices of molybdenum and nickel products in recent years, the rational and comprehensive utilization of nickel and molybdenum mineral resources can not only cr...

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): C22B3/14C22B1/14C22B3/44C22B3/26C22B23/00C22B34/34
CPCY02P10/20
Inventor 李锋铎
Owner 李锋铎
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