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

A combined depressant for flotation separation of copper-lead sulfide ore and its application

A combination inhibitor and lead sulfide ore technology, applied in flotation, solid separation, etc., can solve the problems of unfriendly environment, high lead mutual content, high toxicity, etc., and achieve the effect of reducing difficulty and processing cost, and good water solubility

Active Publication Date: 2021-08-17
CENT SOUTH UNIV
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the disadvantages of high toxicity and unfriendly environment in traditional inhibitors in the current separation process of copper and lead, the purpose of the present invention is to provide a combination inhibitor of high-efficiency, green and environment-friendly lead sulfide and its application to solve the problem of copper-lead sulfide ore flotation. The separated copper concentrate contains high lead content, the amount of lead inhibitor is large, and the recovery rate of lead in lead concentrate is low.

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
  • A combined depressant for flotation separation of copper-lead sulfide ore and its application
  • A combined depressant for flotation separation of copper-lead sulfide ore and its application
  • A combined depressant for flotation separation of copper-lead sulfide ore and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In a complex copper-lead-zinc mine in Inner Mongolia, the raw ore contains 0.45% copper, 2.59% lead, and 3.35% zinc. Copper in the ore mainly exists in the form of primary copper sulfide and secondary copper sulfide, copper mainly exists in the form of chalcopyrite, and lead mainly exists in the form of lead sulfide. The intercalation of copper minerals and lead minerals is uneven in thickness, and their intercalation and symbiosis relationship is complex. The secondary copper ions in the ore produce copper ions during the grinding process, which activates some lead minerals and makes them more floatable, making the separation of copper and lead very difficult.

[0033] The sorting of copper and lead in this embodiment adopts the process flow of copper and lead mixed flotation-copper and lead separation. The raw ore is ground to -74μm by wet ball milling to account for 70%, then lime 1500g / t, zinc inhibitor zinc sulfate 1000g / t and sodium sulfite 500g / t, collector No. ...

Embodiment 2

[0056] A complex copper-lead-zinc polymetallic mine in Sichuan, the raw ore contains 0.38% copper, 2.65% lead, 4.65% zinc, 8.46% sulfur, and 116.64g / t silver, with high economic value. The copper in the ore is mainly primary copper sulfide ore, followed by secondary copper sulfide ore, free copper oxide and combined copper oxide ore. Lead sulfide is mainly galena. Copper and lead minerals are closely symbiotic, interpenetrated and wrapped, and the particle size of the embedded distribution is uneven. Gangue minerals are mainly quartz, mica, calcite, and a small amount of chlorite. Mica minerals are easy to muddy during the grinding process. At the same time, due to the high content of secondary copper sulfide, the dissolved copper ions activate galena, making it very difficult to separate copper and lead.

[0057] The sorting of copper and lead in this embodiment adopts the process flow of copper and lead mixed flotation-copper and lead separation. The raw ore is ground to ...

Embodiment 3

[0072] A complex copper-lead-zinc polymetallic mine in Yunnan, the grade of copper in the ore is 0.84%, the grade of lead is 2.51%, and the grade of zinc is 3.01%. Copper occurring in chalcopyrite accounts for 85.21% of the total copper in the ore. The lead in galena accounts for 89.34% of the total lead in the ore. The symbiotic relationship between copper, lead and zinc minerals is close. It is common for copper sulfide ores to be distributed in fine veins or sparsely disseminated in quartz cracks. The origin of galena is different from that of primary copper sulfide, and it is not closely related to the co-generation of pyrite and pyrrhotite, but the phenomenon of fragmentation is common, and lead is prone to over-crushing during the grinding process, and galena Closely related to clay minerals. The separation of copper and lead in this mine is more difficult.

[0073] The sorting of copper and lead in this embodiment adopts the process flow of copper and lead mixed flo...

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 discloses a combined inhibitor for the separation of copper-lead sulfide ore and its application. Its active components include ferric chloride and 2-phosphonic acid butane-1,2,4-tricarboxylic acid PBTCA, with a mass ratio of (0.5~6): (2~40). Based on the principle of mixed medicine, the present invention combines ferric chloride and 2-phosphonic acid butane-1,2,4-tricarboxylic acid into a lead inhibitor HQ-Pb according to a certain mass ratio, and through the synergistic effect between medicaments, HQ ‑Pb can strongly and selectively inhibit galena, but does not substantially affect the planktonic of chalcopyrite; 2‑phosphonic acid butane‑1,2,4‑tricarboxylic acid and chlorine Iron chemical is non-toxic and pollution-free. Effectively avoided the problem that the traditional galena inhibitor dichromate is highly toxic and extremely harmful to the environment and the human body; 2-phosphonic acid butane-1,2,4 in the combined inhibitor of the present invention ‑Tricarboxylic acid is an excellent water treatment agent with good water solubility and can complex with heavy metal ions in mineral processing wastewater, which can effectively reduce the difficulty and treatment cost of wastewater reuse.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a combined inhibitor for the separation of copper-lead sulfide ore and an application thereof. Background technique [0002] Copper, lead, and zinc, as the main metal mineral products related to the national economy and people's livelihood, can be used in many fields of industrial and agricultural production. With the development of the economy, the large-scale mining and utilization of high-grade copper-lead-zinc polymetallic mineral resources has made the resources increasingly scarce and difficult to deal with. Because chalcopyrite and galena have very similar buoyancy, and the intercalation and symbiosis relationship between minerals is complex, and the intercalation particle size (micro) is fine, it is very difficult to separate. Copper-lead separation has always been a research topic in flotation at home and abroad. important topic. [0003] In rece...

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 Patents(China)
IPC IPC(8): B03D1/018C22B1/00C22B15/00C22B13/00B03D101/06B03D103/02
CPCB03D1/018B03D2201/06B03D2203/02C22B1/00C22B13/04C22B15/0004
Inventor 焦芬魏茜覃文庆杨聪仁刘维韩俊伟董留洋
Owner CENT SOUTH UNIV
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