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

Dressing and smelting combination method for copper-zinc sulfide ores difficult to treat

A technology for combining beneficiation and smelting and sulfide ore, applied in the field of beneficiation and smelting, can solve the problems of difficult separation of copper-zinc sulfide ore, difficulty in industrialization implementation, large discharge of three wastes, etc., achieves good prospects for industrial promotion and application, and simplifies the flotation process. , Improve the effect of recycling indicators

Inactive Publication Date: 2018-03-16
KUNMING UNIV OF SCI & TECH
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a combined dressing and smelting method for refractory copper-zinc sulfide ores, which is mainly aimed at the difficulty in sorting copper-zinc sulfide ores, the traditional dressing and smelting method has long process flow, high cost, large discharge of three wastes, and difficulties in industrialization implementation, etc. question

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
  • Dressing and smelting combination method for copper-zinc sulfide ores difficult to treat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: a kind of dressing and smelting combined method of refractory copper-zinc sulfide ore, concrete operation is as follows:

[0029] A refractory copper-zinc sulfide ore ore, the mass percentage of its chemical composition is: Cu 0.5%, Zn 4%, S 6%, Fe 10.5%, the content of valuable element Au is 0.5 g / t, the ore is crushed 1. After ore grinding treatment, 65% of the material with a particle size of less than 74 μm in mass is obtained, and then copper-zinc mixed concentrate is obtained through copper-zinc mixed flotation, and its chemical composition is mainly: Cu 5.5%, Zn24.6%, S 31.5 %, Fe 21.5%, SiO 2 6.85%, the content of the valuable element Au is 4.5g / t, the mixed concentrate is stacked in the silo, and the concentrate with a water content of 10% is obtained after natural air drying.

[0030] Roast the concentrate with a water content of 10% at 850°C for 3 hours to obtain zinc calcine with a sulfur content of 0.8% and a water content of 0.45%. Mix coke...

Embodiment 2

[0033] Embodiment 2: a kind of dressing and smelting combined method of refractory copper-zinc sulfide ore, concrete operation is as follows:

[0034] A refractory copper-zinc sulfide ore, the mass percentage of its chemical composition is: Cu: 0.7%, Zn: 5.5%, S: 8.2%, Pb: 0.25%, Fe: 14%, the content of valuable element Au is 0.7% g / t, after the ore is crushed and ground, the material with a particle size of less than 74μm in terms of mass is obtained, accounting for 60% of the material, and then copper-zinc mixed concentrate is obtained through copper-zinc mixed flotation, and its chemical composition is mainly: Cu: 7.2%, Zn: 26.7%, Pb: 2.4%, S: 29.8%, Fe: 22.4%, SiO 2 : 8.97%, the content of valuable element Au is 8 g / t, the mixed concentrate is stacked in the silo, heated and dried at 80°C to obtain a concentrate with a water content of 7.5%.

[0035] Roast the concentrate with a water content of 7.5% at a temperature of 1000°C for 1 hour to obtain a zinc calcine with a su...

Embodiment 3

[0038] Embodiment 3: a kind of dressing and smelting combined method of refractory copper-zinc sulfide ore, concrete operation is as follows:

[0039] A refractory copper-zinc sulfide ore, the mass percentage of its chemical composition is: Cu 1.5%, Zn 7%, Sn 0.2% S9.5%, Fe 18%, the content of valuable element Au is 1.5 g / t, will After the ore is crushed and ground, 75% of the material is obtained with a particle size of less than 74μm in terms of mass, and then copper-zinc mixed concentrate is obtained through copper-zinc mixed flotation, and its chemical composition is mainly: Cu 12.6%, Zn 26.5% , Sn 1.8%, S 33%, Fe 21.5%, SiO 2 3.24%, the content of the valuable element Au is 8g / t, the mixed concentrate is stacked in the silo, heated and dried at 150°C to obtain a concentrate with a water content of 5%.

[0040] Roast the concentrate with a water content of 5% at 1050°C for 3 hours to obtain a zinc calcine with a sulfur content of 1% and a water content of 0.1%. Mix coke,...

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 sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a dressing and smelting combination method for copper-zinc sulfide ores difficult to treat and belongs to the field of dressing and smelting. The dressing and smelting combination method for the copper-zinc sulfide ores is used for solving the problems that flotation separation of the copper-zinc sulfide ores is difficult, the traditional dressing and smelting process is long, and the treatment cost is high. Firstly, the copper-zinc sulfide ores are treated through the processes of ore crushing, ore grinding and mixing flotation, and thus mixed flotation concentrates are obtained; then, roasted zinc is obtained after drying and oxidation roasting, coke and slag forming constituents are added for reduction smelting, thus a zinc product, smelted upper-layer slag and smelted bottom slag are obtained, the upper-layer slag is directly used for being sold or used as paving stone, and copper in the bottom slag is enriched preliminarily; and finally, the bottom slag issubjected to selective oxidation smelting at the temperature of 1350-1550 DEG C, thus a primary copper product and ferrous oxide slag are obtained, and the ferrous oxide slag is directly used for ironsmelting or dye manufacturing. The dressing and smelting combination method provides a new method for clean utilization of the copper-zinc sulfide ores difficult to treat, the total recycling rate ofcopper is 80%-90%, and the total recycling rate of zinc is 82%-92%, and the method is short in process, environmentally friendly, and good in industrializing application prospect.

Description

technical field [0001] The invention belongs to the field of beneficiation and smelting, and in particular relates to a combined method of beneficiation and smelting of refractory copper-zinc sulfide ores. Background technique [0002] China has abundant reserves of zinc resources, but the proportion of copper-lead-zinc polymetallic complex sulfide ores is relatively large. Such ores have the characteristics of fine particle size and complex symbiotic relationship, which makes subsequent flotation separation difficult. Copper-zinc sulfide ores are one of them. Typical complex and refractory sulfide ores. The origin of copper-zinc sulfide ore deposits is usually a high-temperature deposit. Chalcopyrite is fine-grained and disseminated in sphalerite. Even if the monomer is dissociated, the ore must be ground below 5-10 μm, thereby increasing the solubility of ore particles and reducing The collision probability of bubbles is reduced, and the flotation recovery rate is reduced...

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): C22B15/00C22B19/02C22B1/02
CPCC22B15/0013C22B15/003C22B19/02C22B19/20
Inventor 郑永兴王华文书明蓝卓越赖振宁吕晋芳
Owner KUNMING UNIV OF SCI & TECH
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