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

Collecting agent for recovering copper-lead-zinc minerals from iron tailings

A collector and copper recovery technology, applied in flotation, solid separation and other directions, can solve the problems of poor floatability of non-ferrous metal minerals, change of non-ferrous metal mineral floatability, and low recovery rate of non-ferrous metals, etc. Flotation environment, efficient and fast flotation, and the effect of improving flotation

Active Publication Date: 2020-04-03
NORTHWEST RES INST OF MINING & METALLURGY INST
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many iron ores contain a small amount of non-ferrous metals such as copper, lead and zinc, which cannot meet the recycling standard by separate separation. However, after iron selection, the non-ferrous metal minerals in this type of ore form a secondary enrichment in the iron-selection tailings, and some of them It has reached the comprehensive recovery standard, but due to the complex nature of the iron ore tailings, the recovery rate of non-ferrous metals is generally not high when conventional collectors are used, and even qualified concentrate products cannot be produced. The main problems are as follows:
[0003] (1) The composition of iron dressing tailings is relatively complex, primary sulfides, secondary sulfides and oxides coexist. During the iron separation process, through ore grinding, magnetic field action and addition of mineral processing agents, the buoyancy of these non-ferrous metal minerals has occurred. Certain changes;
[0004] (2) In iron dressing tailings, due to the muddying of some minerals caused by the early grinding, the buoyancy of non-ferrous metal minerals in the tailings has deteriorated, which is similar to that of some easy-to-float gangues, making separation difficult

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
  • Collecting agent for recovering copper-lead-zinc minerals from iron tailings
  • Collecting agent for recovering copper-lead-zinc minerals from iron tailings
  • Collecting agent for recovering copper-lead-zinc minerals from iron tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The tailings of a certain iron beneficiation contain 0.35% copper and 4.17% sulfur. Ester-215 is used to comprehensively recover copper.

[0014] Step 1: Add 20 parts of acrylonitrile diethyl dithiocarbamate, 20 parts of propionitrile n-butyl xanthate, 10 parts of dibutyl ammonium dithiophosphate, and 20 parts of pine oil into a container at room temperature Press and stir for 30 minutes to make ester-215;

[0015] Step 2: Adjust the tailings to a pH value of 12, add the ester-215 prepared in step 1 and stir for two minutes to float copper, and after twice beneficiation, copper concentrate can be obtained. The technical indicators are shown in Table 1.

Embodiment 2

[0025] The tailings of a certain iron beneficiation contain 0.42% copper and 1.05% sulfur. Ester-215 is used to comprehensively recover copper.

[0026] Step 1: Add 35 parts of acrylonitrile diethyl dithiocarbamate, 35 parts of propionitrile n-butyl xanthate, 15 parts of dibutyl ammonium dithiophosphate, and 15 parts of pinitol oil into the container at room temperature Ester-215 can be prepared by stirring at normal pressure for 40 minutes;

[0027] Step 2: Adjust the tailings to a pH value of 8, add the ester-215 produced in step 1 and stir for two minutes to float copper, and after twice beneficiation, copper concentrate can be obtained. The technical indicators are shown in Table 2.

Embodiment 3

[0035] The tailings of an iron beneficiation contain 0.32% copper, 0.92% zinc and 1.74% sulfur, and the copper and zinc are comprehensively recovered by ester-215.

[0036] Step 1: Add 40 parts of acrylonitrile diethyl dithiocarbamate, 40 parts of propionitrile n-butyl xanthate, 25 parts of dibutyl ammonium dithiophosphate, and 20 parts of pinitol oil into the container at room temperature Ester-215 can be prepared by stirring at normal pressure for 60 minutes;

[0037] Step 2: Adjust the tailings to a pH value of 13, add the ester-215 prepared in step 1 and stir for two minutes to float copper and zinc, and after separation after separation, copper concentrate and zinc concentrate can be obtained. See Table 3 for technical indicators.

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 belongs to the technical field of mineral flotation, and particularly relates to a collecting agent for comprehensive recovery of copper-lead-zinc minerals from iron tailings. The collecting agent is a composition ester-215, and the ester-215 is composed of the following raw materials: diethyl dithiocarbamate acrylonitrile ester, n-butyl xanthate propionitrile ester, ammonium dibutyldithiophosphate and terpenic oil. Compared with a conventional collecting agent, the ester-215 is high in collecting capacity and good in selectivity, particularly has a good collecting effect on secondary sulfide and fine-grained copper-lead-zinc minerals with large silt content, has foamability, effectively improves the flotation environment of the copper-lead-zinc minerals in the iron tailings, improves the floatability of the copper-lead-zinc minerals, and can achieve efficient and rapid flotation. Meanwhile, the requirement of the ester-215 for the medium range of ore pulp is wide, the collecting agent can be used within the pH range of 7-13, the effect is good, the collecting capacity for pyrite is weak, and the concentrate grade can be improved.

Description

technical field [0001] The invention belongs to the technical field of mineral flotation, and in particular relates to a collector for comprehensively recovering copper, lead and zinc minerals from iron beneficiation tailings. Background technique [0002] Copper, lead and zinc and other non-ferrous metal resources in nature are increasingly scarce with the increase of mining efforts. How to comprehensively recover such metals from secondary resources such as tailings and tailings has become the general trend. Many iron ores contain a small amount of non-ferrous metals such as copper, lead and zinc, which cannot meet the recovery standard by separate separation. However, after iron separation, the non-ferrous metal minerals in this type of ore form secondary enrichment in the iron separation tailings, and some of them The comprehensive recovery standard has been reached, but due to the complex nature of the iron ore tailings and the use of conventional collectors, the recove...

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): B03D1/014B03D101/02B03D103/02
CPCB03D1/014B03D2201/02B03D2203/02
Inventor 柏亚林彭贵熊王李鹏胡保栓郭海宁包玺琳巩明辉王志丰刘坤任琳珠杨俊龙李健民
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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