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

Method for conducting wet processing on low-grade zinc oxide ore

A technology of zinc oxide ore and wet treatment, which is applied in the direction of photographic technology, equipment, photographic auxiliary technology, etc., can solve the problems of impracticable production, poor stability, and difficult to maintain a high leaching rate of ammonia leaching effect, etc., and achieves wide application range, The effect of high recovery rate

Inactive Publication Date: 2016-06-08
许亚夫
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcomings are: the leaching effect of ammonia water is difficult to maintain a high level in the actual production leaching rate, and the stability is poor
Its shortcomings are: the conditions required for the reaction are harsh and cannot be really applied to actual production
And the production process is cumbersome, and in the actual production process, the loss of zinc in each process is relatively large

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

[0022] Embodiment 1: test a zinc oxide ore in Henan with the method of the present invention.

[0023] Step 1: Zinc oxide ore, in which the zinc grade is 7.3%, is sent to the crusher for crushing, and then finely ground to below 200 mesh.

[0024] Step 2: Send the ground zinc oxide ore to the leaching tank, add water for neutral leaching, the liquid-solid ratio is 3:1, start stirring, control the leaching temperature to 35°C, the leaching time to 1h, and the pH value at the end of the leaching is 4.5.

[0025] Step 3: Use a filter press to separate the solid and liquid from the neutral leached solution, send the leached residue to the acid leaching tank and add sulfuric acid (5mol / l) for acid leaching, the leaching temperature is 80°C, and the liquid-solid ratio is 3:1 , the leaching time is 1h, and the pH value of the leaching end point is 1.5.

[0026] Step 4: After the acid leaching is completed, use a filter press to separate the solid and liquid, and the leachate is sen...

Embodiment 2

[0030] Embodiment 2: test a certain zinc oxide ore in Shanxi with the inventive method.

[0031] Step 1: Zinc oxide ore, in which the zinc grade is 12.6, is sent to the crusher for crushing, and then finely ground to below 200 mesh.

[0032] Step 2: Send the ground zinc oxide ore to the leaching tank, add water for neutral leaching, the liquid-solid ratio is 3:1, start stirring, control the leaching temperature to 45°C, the leaching time is 1h, and the pH value of the leaching end point is 5.5.

[0033] Step 3: Use a filter press to separate the solid and liquid from the neutral leached solution, send the leached residue to the acid leaching tank and add sulfuric acid (5mol / l) for acid leaching, the leaching temperature is 80°C, and the liquid-solid ratio is 3:1 , the leaching time is 1h, and the pH value of the leaching end point is 2.5.

[0034] Step 4: After the acid leaching is completed, use a filter press to separate the solid and liquid, and the leachate is sent to th...

Embodiment 3

[0038] Embodiment 3: test a certain zinc oxide ore in Shaanxi with the method of the present invention.

[0039] Step 1: Zinc oxide ore, in which the zinc grade is 19.6%, is sent to the crusher for crushing, and then finely ground to below 200 mesh.

[0040] Step 2: Send the ground zinc oxide ore to the leaching tank, add water for neutral leaching, the liquid-solid ratio is 3:1, start stirring, control the leaching temperature to 35°C, the leaching time to 1h, and the pH value at the end of the leaching is 5.5.

[0041] Step 3: Use a filter press to separate the solid and liquid from the neutral leached solution, send the leached residue to the acid leaching tank and add sulfuric acid (5mol / l) for acid leaching, the leaching temperature is 80°C, and the liquid-solid ratio is 3:1 , the leaching time is 1h, and the pH value of the leaching end point is 2.5.

[0042] Step 4: After the acid leaching is completed, use a filter press to separate the solid and liquid, and the leac...

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 conducting wet processing on low-grade zinc oxide ore and relates to the technical filed of nonferrous metallurgy, in particular to a method for producing high-quality electric zinc from the low-grade zinc oxide ore. The method, provided by the invention, for conducting wet processing on the low-grade zinc oxide ore is wide in application range and high in recovery rate. The method comprises the steps that 1, the zinc oxide ore is fed into a crusher to be crushed and then subjected to fine grinding to below 200 meshes; 2, the ground zinc oxide ore is fed into a leaching pool, water is added for neutral leaching, and stirring is started; 3, a filter press is used for conducting solid-liquid separation on a solution obtained after neutral leaching, leaching residues are fed into an acid leaching pool, and sulfuric acid is added for acid leaching; 4, after acid leaching is finished, solid-liquid separation is conducted through the filter press, a leaching solution is fed to an extraction working procedure, three-level extraction and two-level reverse extraction are adopted, and the organic phase components are 50% of P204 and 260# kerosene; and 5, a solution obtained after extraction is fed into an electrolytic cell for electrolysis, Pb-Ag-Ca-Sr four-element alloy is adopted for an anode, and an aluminum plate is adopted for a cathode.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal metallurgy, in particular to a method for producing high-quality electric zinc from low-grade zinc oxide ore. The method can effectively treat zinc oxide ore with a zinc grade of 5%-25%. Background technique [0002] With the development of zinc smelting industry, zinc sulfide ore has become exhausted, and people pay more and more attention to the development and utilization of zinc oxide ore. The grade of zinc oxide rich ore is generally 25%-35%, and less than 25% is low-grade zinc oxide ore. Zinc oxide ore contains a large amount of metal impurities, such as lead, iron, cadmium, copper, etc., and its mineral phase is very complex, it is difficult to separate, and the selection of flotation reagents and the modification of the mineral surface are difficult. Zinc oxide ore generally contains higher silicates and a part of zinc silicate ore and hemimorphite that are soluble in dilute sul...

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): C25C1/16
Inventor 许亚夫
Owner 许亚夫
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