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

Strengthened leaching method of nickel in molybdenum sulfide nickel ores

A technology of enhanced leaching and molybdenum sulfide, applied in the direction of improving process efficiency, can solve problems such as environmental pollution, comprehensive recovery, and unsatisfactory beneficiation effects, and achieve the effects of low equipment requirements, saving raw materials, and low risk

Inactive Publication Date: 2015-01-14
WUXI CHENGBO SCI & TECH DEV
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the particularity of the mineral form, the comprehensive recovery and beneficiation of molybdenum-nickel mineral resources are not ideal. Currently, the methods of smelting ferromolybdenum in electric furnaces, roasting-leaching, high-temperature oxygen pressure leaching, and normal temperature wet leaching are still in place, and all of them are It is limited to the processing of high-grade minerals, and at the same time causes serious pollution to the environment

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

[0029] (1) Roasting: Grind the ore sample to below 0.0061mm, take 800g, add 720g of anhydrous sodium carbonate according to the ratio of 1:0.9, and roast at 560°C for 6h. During the roasting process, introduce air and stir every 30min. Then raise the temperature to 650°C and roast for 1.5h to obtain 1344g calcined sand. After analysis, the grade of nickel in the calcined sand is 2.67%, the recovery rate of nickel is 96.70%, the grade of molybdenum is 3.50%, and the recovery rate is 99.85%.

[0030] (2) Separation of molybdenum and nickel: the calcined sand obtained in step (1) is ground by a vibrating mill at 960r / min for 3min, and the particle size is 0.076mm. Water immersion adopts a liquid-solid ratio of 4:1, leaching temperature of 95°C, time of 2h, filtering and washing to obtain a dark gray filter residue, which contains 4.51% nickel, and the recovery rate of nickel is 99.70%; after analysis, 95.43% of molybdenum enters the filtrate.

[0031] (3) Enhanced leaching of ni...

Embodiment 2

[0033] (1) Roasting: Grind the ore sample until the particle size is below 0.01mm, add anhydrous sodium carbonate according to the mass ratio of 1:2, and roast at 530°C for 8h, then raise the temperature to 600°C, and roast for 3h, during the roasting process Introduce air and stir once every 20 minutes to obtain calcined sand. After analysis, the nickel grade in the calcined sand is 2.75%, the recovery rate of nickel is 96.59%, the grade of molybdenum is 3.53%, and the recovery rate is 99.91%.

[0034] (2) Separation of molybdenum and nickel: Grind the calcined sand obtained in step (1) at 900r / min for 5 minutes until the particle size is less than 0.1mm, and then immerse in water at a liquid-solid ratio of 2:1 at a leaching temperature of 70°C. After 3 hours, filter and wash to obtain dark gray filter residue, which contains 4.57% nickel, and the recovery rate of nickel is 99.81%; after analysis, 95.57% of molybdenum enters the filtrate.

[0035] (3) Enhanced leaching of nic...

Embodiment 3

[0037] (1) Roasting: Grind the ore sample until the particle size is below 0.008mm, add anhydrous sodium carbonate according to the mass ratio of 2:1, roast at 600°C for 4h, then raise the temperature to 800°C, and roast for 1h, during the roasting process Air was introduced and stirred every 40 minutes to obtain calcined sand. After analysis, the nickel grade in the calcined sand was 2.59%, the recovery rate of nickel was 96.67%, the grade of molybdenum was 3.52%, and the recovery rate was 99.81%.

[0038] (2) Separation of molybdenum and nickel: Grind the calcined sand obtained in step (1) at 1000 r / min for 1 min until the particle size is below 0.09 mm, and then immerse in water at a liquid-solid ratio of 8:1 at a leaching temperature of 100 °C. After 1h, filter and wash to obtain dark gray filter residue, which contains 4.50% nickel, and the recovery rate of nickel is 99.68%; after analysis, 95.41% of molybdenum enters the filtrate.

[0039] (3) Enhanced leaching of nickel...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a strengthened leaching method of nickel in molybdenum sulfide nickel ores. The method comprises the following steps: roasting; molybdenum and nickel separation, namely crushing roasted sands until the granularity is below 0.1mm, carrying out water leaching in a liquid solid ratio of (2:1)-(8:1), and filtering and washing to obtain dark grey filter residues, wherein the leaching temperature is 70-100 DEG C, the time is at least 1 hour; and strengthened leaching of nickel, namely in a leaching mixed liquid, carrying out ultrasonic oscillation for at least 4 hours, thereby obtaining nickel from the leaching liquid, wherein the liquid solid ratio of the liquid and the filter residues is (3:1)-(8:1), the concentration of sulfuric acid is 10-20wt% and the leaching temperature is 70-100 DEG C. The method provided by the invention is used for effectively separating molybdenum and nickel and the leaching rate of nickel can reach 85%; and moreover, in the test, the concentration of sulfuric acid is relatively low, so that not only are the raw materials saved, but also the method is less in pollution, low in dangerousness and not high in requirements on equipment and has certain using value.

Description

technical field [0001] The invention relates to the field of leaching of molybdenum-nickel sulfide ore, in particular, the invention relates to a method for intensified leaching of nickel in molybdenum-nickel sulfide ore. Background technique [0002] Mineral resources are non-renewable disposable resources. The per capita possession of mineral resources in my country is far below the world average level, and the comprehensive utilization rate of mineral resources is low, with a total recovery rate of less than 30%. Therefore, actively promoting the recovery and comprehensive utilization of mineral resources and industrial waste is a key to building a conservation-oriented society and An important link in the development of circular economy. According to media reports, Maartje Collignon, an analyst at the metal analysis agency CRU, said that mainly due to the impact of stainless steel production growth, the global nickel market will experience a supply shortage for the first...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C22B23/00C22B3/08
CPCY02P10/20
Inventor 李飞
Owner WUXI CHENGBO SCI & TECH DEV
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