Experimental Study on Flotation of a Yunnan Sulfide a Low Grade Copper Ore

2013 ◽  
Vol 734-737 ◽  
pp. 935-940
Author(s):  
Ju Wang ◽  
Hui Xin Dai ◽  
Yan Hua Guo
Keyword(s):  
Experimental Study ◽  
Copper Sulfide ◽  
Closed Circuit ◽  
Low Grade ◽  
Copper Ore ◽  
Concentrate Grade ◽  
Ore Grade

Based on a single Yunnan copper sulfide, we conducted a series of flotation test research. The results indicate that the raw ore grade is 0.78%,by closed circuit process of 1stage of roughing, 1stage of scavenging and 2 stages of cleaning flotation, 14.85% concentrate grade with 92.49% recovery can be obtained, and the index is ideal.

Experimental Study on Flotation of Copper Sulfides in Yunnan Province

2014 ◽  
Vol 1010-1012 ◽  
pp. 1630-1635
Author(s):  
Jian Gang Ku ◽  
Hui Huang Chen ◽  
Wen Yuan Liu
Keyword(s):  
Experimental Study ◽  
Yunnan Province ◽  
Industrial Applications ◽  
Low Grade ◽  
Copper Ore ◽  
Copper Sulfides ◽  
Fine Grained ◽  
Concentrate Grade ◽  
Combination Mode ◽  
Grade Index

The copper ore, which has fine-grained nature and differences in the degree of mineral dissemination, is a kind of low grade sulfide minerals. Tests indicate that not only the grinding fineness but also the combination mode of depressants is one of the most important factors to improve the concentrate grade index. Additionally, according to tests conducted with dosage of lime, the rougher flotation should be operated at a pH of 11. Furthermore, all the depressants used were effective to increase the concentrate grade. By the closed-circuit micro-flotation experiment, satisfied grade index (18.7%Cu with 81% recovery) of the final concentrate was achieved, which could provide reference in industrial applications.

Flotation Experimental Study of High-Sulfur Cu-Zn Ore in Yunnan

2014 ◽  
Vol 490-491 ◽  
pp. 160-163
Author(s):  
Zhi Guo Zhang ◽  
Quan Jun Liu ◽  
Jin Cheng Ran
Keyword(s):  
Experimental Study ◽  
Mineral Composition ◽  
Recovery Rate ◽  
Closed Circuit ◽  
Copper Concentrate ◽  
Concentrate Grade ◽  
And Control ◽  
Zinc Concentrate

The experimental ore belongs to high-sulfur Cu-Zn poly-metallic ore, the mineral composition of ore is complex, cupriferous pyrite most are disseminated. The Cu grade of raw ore is 0.76%, Zn grade is 1.48% and S about 25.02%. on the basis of best reagent system and control flotation time, the author did closed circuit process. the results of closed circuit process as follows: the copper concentrate grade is 20.35% and recovery rate is 86.081%; the zinc concentrate grade is 54.32% and recovery rate is 84.20%.

Biological Production of Copper Sulfide Concentrate from Flotation Tailings and Low Grade Ore

2017 ◽  
Vol 262 ◽  
pp. 202-206 ◽  
Author(s):  
Víctor J. Zepeda ◽  
Ivan Nancucheo ◽  
Milton Guillen ◽  
Enrique Becerra ◽  
Camila Escuti ◽  
...  
Keyword(s):  
Copper Sulfide ◽  
Mine Drainage ◽  
Mining Industry ◽  
Low Grade ◽  
Copper Ore ◽  
Flotation Reagents ◽  
Selective Precipitation ◽  
Flotation Tailings ◽  
Fine Grained ◽  
Fine Chemistry

Flotation tailings are hazardous due to physical and chemical instability and are currently considered one of the main pollution concerns of mining industry. Most of these tailings are fine-grained residues with low copper content (0.1-0.8%) and include toxic compounds, such as heavy metals, arsenic, and flotation reagents, among others. Another hazard is the generation of acid mine drainage (AMD) due to biological oxidation of tailings. On the other hand, low-grade ore is challenging the mining industry to commercially produce copper.The main objective of this work was to assess the use of flotation tailings and low-grade ore to produce a biologically-produced copper sulfide, as a product for further pyrometallurgical or fine chemistry processing. Low-grade ore and flotation tailings were first agglomerated at different proportions and leaching tests were performed in 1m columns, using either industrial or synthetic raffinate solution. Then, the PLS solution obtained from the column tests was subjected to selective precipitation of copper by using biogenic hydrogen sulfide (H2S) generated by a mixed culture of neutrophilic sulfate reducing bacteria (SRB), enriched from sediments of Caracarani river (located at 4,600 m over sea level in northern Chile).Over 91% of the copper soluble present in the PLS was recovered as copper sulfide in 28 days, while ferrous iron, other metals and arsenic remained in solution. Analysis performed by XRD confirmed the presence of copper in the precipitate (58% as covellite). This work demonstrates the possibility to apply bioleaching and bio-precipitation technologies to treat tailings and low-grade copper ore to produce a high quality copper sulfide.

Research on Flotation Tests of Sulfide Copper Ore from Yunan

2013 ◽  
Vol 634-638 ◽  
pp. 3466-3471 ◽  
Author(s):  
Yi Jie Wang ◽  
Shu Ming Wen ◽  
Jian Liu ◽  
Qi Cheng Feng ◽  
Meng Yang Lv
Keyword(s):  
Mineral Processing ◽  
Copper Recovery ◽  
Closed Circuit ◽  
Iron Deposit ◽  
Flow Sheet ◽  
Optimum Conditions ◽  
Butyl Xanthate ◽  
Copper Ore ◽  
One Stage ◽  
Concentrate Grade

The mineral processing flow sheet and reagent system of flotation copper minerals from a large copper-iron deposit in Yunnan were fully investigated. The results indicate that the optimum conditions for flotation of copper minerals from the material were identified as grinding fineness of 85%, dosage of CaO at 2000g/t , dosage of Na2S at 200 g/t, dosage of butyl xanthate 40g/t. Under such a condition, a copper recovery of 88.17% with a concentrate grade of 26.86% was achieved from the material using a closed circuit flow sheet of "one-stage roughing flotation, one-stage cleaning flotation and one-stage scavenging flotation.

Studying on Oxide Copper Ore Flotation with Different Collectors

2014 ◽  
Vol 1010-1012 ◽  
pp. 1626-1629 ◽  
Author(s):  
Ying Bo Mao ◽  
Shu Ming Wen ◽  
Jian Jun Fang
Keyword(s):  
Experimental Study ◽  
Recovery Rate ◽  
Copper Ore ◽  
Concentrate Grade

Various collectors and combinations of them were used for experimental study on flotation of oxide copper ore in Huidong and the results showed that isoamyl xanthate would be a proper collector agent. When using it at 550g/t, the rough concentrate grade was 3.97%, and the recovery rate reached its highest value of 83.05%.

Beneficiation of a Low-Grade Refractory Copper Ore in Yunnan

2014 ◽  
Vol 968 ◽  
pp. 173-179
Author(s):  
Feng Xie ◽  
Han Ping Zhang ◽  
Xian Mei Chen ◽  
Jin Fang Lv
Keyword(s):  
Experimental Study ◽  
Separation Process ◽  
Low Grade ◽  
Copper Ore ◽  
Copper Concentrate

Regarding to a Low-grade refractor copper ore，this paper investigates the property of run-of-mine ore，and based on the characteristic of raw ore，mineral process experimental study is implemented. It can realize the copper concentrate grading at 15.84%with a 87.04% recovery through the bulk flotation with Cu-S separation process.

Flotation Research on Cuprite-Type Oxide Copper in XinJiang

2012 ◽  
Vol 524-527 ◽  
pp. 987-992 ◽  
Author(s):  
Kun Xiong ◽  
Shu Ming Wen ◽  
Gui Shan Zheng ◽  
Shao Jun Bai ◽  
Hai Ying Shen
Keyword(s):  
Low Grade ◽  
X Ray Diffraction ◽  
Copper Oxidation ◽  
Copper Ore ◽  
Element Analysis ◽  
X Ray ◽  
Optimum Parameters ◽  
Concentrate Grade ◽  
The Many ◽  
Multi Element Analysis

Low-grade oxide copper ore is an important resource, reserves of which are scattered all over the world. In the present study, the characteristics of oxide copper ore are studied using multi-element analysis and X-ray diffraction. The oxide copper minerals in the ore are mainly in the form of cuprite, malachite, chrysocollite and azurite. The effects of grinding fineness and agent regulation on flotation are also investigated. Floatability was unsatisfactory because of the many kinds of oxide copper minerals present in the sample. The flotation results indicate that a concentrate grade of 18.32% at 73.46% recovery can be obtained using the closed circuit process of one-stage roughing, three-stage scavenging and two-stage cleaning flotation under the optimum parameters, with raw ore characteristics of 1.29% Cu, 92.25% copper oxidation rate, and 65.59% slime content.

Experimental Study on Purification of Magnesite Ore in Liaoning Province

2013 ◽  
Vol 826 ◽  
pp. 48-52
Author(s):  
Jia Hong Han ◽  
Xiao An Li ◽  
Shu Juan Dai ◽  
Zhi You Wang ◽  
Lian Tao Yu
Keyword(s):  
Experimental Study ◽  
Hydrochloric Acid ◽  
Sodium Silicate ◽  
Sodium Hexametaphosphate ◽  
Liaoning Province ◽  
Low Grade ◽  
Reverse Flotation ◽  
Flotation Process ◽  
Mineral Flotation ◽  
Concentrate Grade

A region of liaoning low-grade magnesite ore products mainly for magnesite ,the gangue minerals are mainly hematite,calcite,chlorite,quartz,etc.This experimental using a roughing secondary selected single reverse flotation process,with hydrochloric acid, sodium silicate,sodium hexametaphosphate for adjustment,LKD for collecting agent,the ore are studied,in the conditions of mine ore SiO2 content is 0.85%,MgO content is 95.53%,Fe2O3 content is 0.82%,obtain concentrate SiO2 content is 0.17%,Fe2O3 content is 0.69%,concentrate grade (MgO content) is 97.31%,the recovery is 78.86% of the experimental index.The experimental of related mineral flotation purification provide identification and reference.

Study on Exploiting and Utilizing Technology of Certain Middle-and-Low-Grade Bauxite

2013 ◽  
Vol 734-737 ◽  
pp. 982-988 ◽  
Author(s):  
Xiao Qing Chen ◽  
Jin Zhong Yang ◽  
Yi Lin Mao ◽  
Wei Ping Yan
Keyword(s):  
Fine Particle ◽  
Raw Material ◽  
Closed Circuit ◽  
Low Grade ◽  
Experiment Research ◽  
Alumina Production ◽  
Technological Basis ◽  
Flow Test ◽  
Development And Utilization ◽  
Concentrate Grade

Taking a middle and low grade bauxite sample in Chongqing as the research object, the processing experiment research separated and enriched the low-grade raw ore to provide higher grade raw material for alumina production, which consequently ascertain proper processing technology solutions, increases concentrate grade and recovery, and provides technological basis for the development and utilization of bauxite resources in the district. The experiment recommends the process of "selective grinding grading of coarse and fine particle - direct flotation", and the technological indexes of closed circuit flow test are A/S 8.23 and recovery 91.42%.

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