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

Method for recovering gold from flotation tailings

A technology for flotation tailings and gold recovery, applied in flotation, solid separation and other directions, can solve problems such as high recovery rate, and achieve the effects of high separation index, low cost, and easy management and operation.

Inactive Publication Date: 2019-03-19
NORTHWEST RES INST OF MINING & METALLURGY INST
View PDF10 Cites 3 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 method for recovering gold from flotation tailings to solve the problem that the existing flotation cannot obtain a higher recovery rate under the condition of ensuring the concentrate grade

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
  • Method for recovering gold from flotation tailings
  • Method for recovering gold from flotation tailings
  • Method for recovering gold from flotation tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A flotation tailings was used as raw ore for flotation gold separation, and the gold grade of the flotation tailings was 2.63 g / t. The recyclable element is gold, and pyrite is the main carrier mineral of gold. The distribution of gold ore in the carrier mineral is uneven, some are distributed in groups, most of them are scattered, and they are mostly filled between pyrite and other sulfide particles. Thinner, more difficult to float. Wherein the beneficiation steps of gold minerals are:

[0022] 1) Grinding: Grinding gold minerals, that is, raw ore, to a fineness of 0.074 mm, accounting for 85%, adjusting the concentration of the slurry to 36%;

[0023] 2) Rough selection: add gold mineral regulator per ton of raw ore: sodium sulfide 400g / t, sodium sulfate 1000g / t, sodium fluorosilicate 500g / t; collecting foaming agent per ton of raw ore: n-butyl Sodium xanthate 130g / t, hydroxyacid 50g / t, pinitol oil 100g / t. The flotation tailings are used as a scavenging feed, and ...

Embodiment 2

[0030] Raw ore is with embodiment one, and the beneficiation step of gold mineral is:

[0031] 1) Grinding: Grinding gold minerals, that is, raw ore, to a fineness of 0.074 mm, accounting for 87%, adjusting the slurry concentration to 34%;

[0032] 2) Rough selection: add gold mineral regulator per ton of raw ore: sodium sulfide 550g / t, sodium sulfate 750g / t, sodium fluorosilicate 350g / t; collecting foaming agent per ton of raw ore: n-butyl Sodium xanthate 100g / t, hydroxyacid 75g / t, terpineol oil 75g / t. The gold flotation tailings are used as a scavenging feed, and the flotation coarse concentrate is used as a beneficiation feed;

[0033] 3) One-time beneficiation: add gold mineral regulator to the rougher concentrate slurry, calculated per ton of raw ore: sodium sulfate 200g / t, sodium fluorosilicate 100g / t; collecting foaming agent per ton of raw ore: positive Sodium butyl xanthate 10g / t, the primary beneficiation concentrate is used as the ore for the secondary beneficiati...

Embodiment 3

[0039] Raw ore is with embodiment one, and the beneficiation step of gold mineral is:

[0040] 1) Grinding: Grinding gold minerals, that is, raw ore, to a fineness of 0.074 mm, accounting for 90%, adjusting the concentration of the slurry to 32%;

[0041] 2) Rough selection: add gold mineral regulator per ton of raw ore: sodium sulfide 700g / t, sodium sulfate 500g / t, sodium fluorosilicate 200g / t; collecting foaming agent per ton of raw ore: n-butyl Sodium xanthate 80g / t, hydroxyacid 100g / t, pinitol oil 50g / t. The gold flotation tailings are used as a scavenging feed, and the flotation coarse concentrate is used as a beneficiation feed;

[0042] 3) One-time beneficiation: adding gold mineral regulator to the rougher concentrate pulp: 100g / t sodium sulfate, 50g / t sodium fluorosilicate; Sodium butyl xanthate 5g / t, the primary beneficiation concentrate is used as the secondary beneficiation ore, and the primary beneficiation medium ore returns to the roughing step to form a close...

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 method for recovering gold from flotation tailings. The method for recovering the gold from the flotation tailings is characterized in that the method for recovering the goldfrom the flotation tailings comprises the steps that gold minerals are contained in the flotation tailings, that is, the flotation tailings are ground to a certain fineness, the gold minerals are collected by adding a gold mineral regulating agent and a collecting and foaming agent, and within the concentration range of the certain regulating agent and the collecting agent, the flotation of goldminerals is realized; the gold mineral combination regulating agent is sodium sulfide, sodium sulfate and sodium fluorosilicate; and the collecting and foaming agent is sodium n-butylxanthate, hydroxyacid and terpineol oil. The mineral flotation method is simple in technology, managing and operating on the spot is easy, and high economic and technical indexes can be obtained by using the process.The used chemicals are environmental protection, and the final obtained gold fine mineral is higher in grade and recovery rate.

Description

technical field [0001] The invention belongs to the technical field of beneficiation for recovering gold from flotation tailings, in particular to a method for recovering gold from flotation tailings. Background technique [0002] A large number of recyclable tailings will be produced in the non-ferrous metal beneficiation process, and its comprehensive recovery has become a new hot spot in the development and utilization of secondary resources. It has very important strategic and practical significance in terms of environmental protection and economics. [0003] At present, the beneficiation method of tailings recovery in the non-ferrous metal beneficiation process mainly adopts the conventional flotation reagent scheme to recover. This method has the following problems: (1) The composition of gold minerals in the flotation tailings is complex, and the conventional flotation reagent scheme cannot A higher recovery rate can be obtained under the condition of ensuring the gra...

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
IPC IPC(8): B03D1/018B03D101/02B03D101/04B03D103/02
CPCB03D1/018B03D2201/02B03D2201/04B03D2203/025
Inventor 郭海宁吴春香李福兰杨俊龙王李鹏苗培姜永智王志丰
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