Investigation on Copper Flotation from a Complex Copper Ore, Yunnan Province

2015 ◽  
Vol 1094 ◽  
pp. 389-392 ◽  
Author(s):  
Chuan Fa Cui ◽  
Yong Jun Xian ◽  
Shu Ming Wen ◽  
Yi Jie Wang
Keyword(s):  
Yunnan Province ◽  
Copper Recovery ◽  
Sulfide Deposit ◽  
Flow Sheet ◽  
Optimum Conditions ◽  
Butyl Xanthate ◽  
Two Stage ◽  
Copper Ore ◽  
Concentrate Grade ◽  
Complex Copper

The mineral processing flow sheet and reagent system of flotation copper minerals from alarge copper sulfide deposit in Yunnan were fully investigated. The results indicated that the optimum conditions for flotation of copper minerals from the material were identified as follows: grinding fineness of 80%(-0.074mm), dosage of CaO 800g/t, butyl xanthate 100g/t.Under such condition, a copper recovery of 90.57% with a concentrate grade of 19.52% was achieved from the material using a closed circuit flow sheet of one-stage roughing flotation, two-stage cleaning flotation and two-stage scavenging flotation.

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.

Efficiently Utilizing a Low Grade and Complex Copper Ore by Flotation

2013 ◽  
Vol 734-737 ◽  
pp. 929-934
Author(s):  
Qi Nie ◽  
Xiao Si Zhou ◽  
Fen Lan Peng ◽  
Xu Shen ◽  
Zhi Zhang Li
Keyword(s):  
Yunnan Province ◽  
Copper Recovery ◽  
Test Scheme ◽  
Low Grade ◽  
High Quality ◽  
Copper Ore ◽  
Copper Concentrate ◽  
Main Factors ◽  
Complex Copper

Based on the analysis of the properties of the copper ore from Jinggu area in Yunnan province, a suitable technical route was presented for processing of eligible copper concentrate and the main factors i.e. grinding fineness, Na2S dosage and collector dosage, affecting the quality of roughing concentration was investigated. On this basis, a close-circuit flotation test scheme was preceded, which obtained a high quality copper concentrate with Cu grade of 16.08%, copper recovery of 58.52%. The recovery of copper concentrate is much lower than the Cu recovery of roughing concentrate from the condition experiments. This may be contributed to the fact that fine slime carried by middling worsens the separation of copper minerals and gangues. The Mo was enriched in concentrate, which is significantly considered to recovery in further work.

Mineral Processing Experiment of Copper Mineral in Yunnan Province

2013 ◽  
Vol 652-654 ◽  
pp. 2471-2474
Author(s):  
Yi Miao Nie ◽  
Jin Xia Zhang ◽  
Qi Hui Dai
Keyword(s):  
Chemical Analysis ◽  
Mineral Composition ◽  
Yunnan Province ◽  
Sodium Sulfide ◽  
Copper Recovery ◽  
Optimum Conditions ◽  
Butyl Xanthate ◽  
Foaming Agent ◽  
Copper Mineral ◽  
Ore Grade

Based on the chemical analysis and mineral composition research, a series condition tests were done with ore grade 1.45%.The optimum conditions were grinding fineness -0.074mm65%, collector as butyl xanthate- Ammonium aerofloat butyl(3:1) with 100g/t ,activator as sodium sulfide 200g/t,foaming agent as 2#oil of magnetite 30g/t. The result of tests showed that the grade of copper concentrate and the copper recovery are 8.98% and79.50% by adopting a circuit of one rough flotation, two scavenger.

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 Responce of the Refractory Yangla Copper Oxide Ores with Hydroxamate Collectors

2013 ◽  
Vol 803 ◽  
pp. 131-136 ◽  
Author(s):  
Fei Xiong ◽  
Yan Jun Li ◽  
Zhong Hui Zhang ◽  
Yao Zhong Lan
Keyword(s):  
Copper Oxide ◽  
Yunnan Province ◽  
Copper Recovery ◽  
Refractory Oxide ◽  
Bench Scale ◽  
Oxide Minerals ◽  
Concentrate Grade ◽  
Copper Ores ◽  
Chelating Reagent

To establish the flotation response and suitability of the collectors, series of bench-scale flotation tests are conducted for the refractory oxide copper ores obtained from Yangla Mine in Yunnan province. A simple xanthate (PAX) is used as the sulphide collector and a chelating reagent of hydroxamate AM28 as the oxide collector. It is found and confirmed by mineralogical examination that AM28 successfully recovered all the discrete copper oxide minerals from the Yangla ore. The flotation tests show that the overall copper recovery is affected due to the minerals copper associated with goethite which is not amenable to flotation. The average copper recovery from the rougher tests is 38.4% with a concentrate grade of 3.19%. The additional cleaning flotation can increase the Cu grade in concentrate further.

Bioflotation of a Black Shale Copper Ore

2007 ◽  
Vol 20-21 ◽  
pp. 358-361 ◽  
Author(s):  
Irena Spasova ◽  
Marina Nicolova ◽  
Stoyan N. Groudev
Keyword(s):  
Black Shale ◽  
Black Shales ◽  
Copper Recovery ◽  
Two Stage ◽  
Copper Ore ◽  
Microbial Pretreatment ◽  
Chemolithotrophic Bacteria ◽  
Silicate Bacteria ◽  
Reducing Bacteria ◽  
Positive Effect

A sample of black shale fraction of copper ore from the Lubin deposit, Poland, was subjected to pretreatment by different microorganisms to improve the copper recovery during the subsequent flotation. Chemolithotrophic bacteria grown on So and S2O3 2- were used to depress pyrite before flotation by means of ethyl xantate as collector. Sulphate-reducing bacteria were used to perform a prior sulphidization of the black shales before flotation by means of the same collector. Two-stage flotation experiments were carried out in which initially the gangue minerals of the ore were depressed by means of “silicate” bacteria and then, during the flotation of the non-floated product from the first stage, the pyrite was depressed by means of pretreatment with So- grown chemolithotrophs. In all these cases the microbial pretreatment had positive effect on the copper recovery.

Investigation on Improving the Recovery of Molybdenum in Bulk Flotation of Mo-Copper Sulphide Ore

2012 ◽  
Vol 616-618 ◽  
pp. 649-654
Author(s):  
Qin Bo Cao ◽  
Shu Ming Wen ◽  
Dan Liu ◽  
Hai Ying Shen ◽  
Jiu Shuai Deng ◽  
...  
Keyword(s):  
Yunnan Province ◽  
Copper Sulphide ◽  
Butyl Xanthate ◽  
Copper Ore ◽  
Copper Concentrate ◽  
Sulphide Ore ◽  
Copper Flotation

Improving the recovery of molybdenum is a research hotspot in the bulk flotation of Mo-copper sulphide ore. In this paper, the optimum flotation parameters for a kind of molybdenite ore obtained form Yunnan province, involving the grinding fineness, pulp concentration, dosages of kerosene and butyl xanthate, were determined in order to improve the recovery of Mo in the bulk Mo-copper flotation. In addition, a close-circuit flotation test was also conducted to simulate the practical process. A Mo-copper concentrate with Mo grade of 3.02% and recovery of 93.46% was obtained through the close-circuit flotation test, which satisfy the requirement for the bulk flotation of Mo-copper ore.

A Copper Oxide Ore Treatment by Flotation

2013 ◽  
Vol 813 ◽  
pp. 230-233
Author(s):  
Bao Liang Ge ◽  
Yan Xiong Fu ◽  
Qing Li
Keyword(s):  
Copper Oxide ◽  
Flow Sheet ◽  
Butyl Xanthate ◽  
Copper Oxidation ◽  
Two Stage ◽  
Main Metal ◽  
Pine Oil ◽  
One Stage ◽  
Ore Treatment ◽  
Oxidation Ratio

The ore containing 0.77%copper, the main metal minerals in the ore are hemesite, pyrite bornite, covellite, malachite, the main gangue minerals in the ore are quartzite, dolomite, plagioclase, Chlorite, calcite. And the copper oxidation ratio of the ore is 45.5%, According several flotation tests, finally found that the optimum reagents dosage are: butyl xanthate 90g/t as collector, pine oil 35g/t as foaming, sodium sulphide1000g/t, lime3000g/t, and the flow-sheet is one stage of roughing, three stage of cleaning and two stage of scavenging operationg in the close circuit under the grinding fineness is 85% -0.074mm.Satisfactory results had been obtained as the grade of is 18.06% with recovery 80.01%.

Efficient Utilization of Copper Sulfide Ore in Chile by Flotation

2012 ◽  
Vol 524-527 ◽  
pp. 975-982
Author(s):  
Jiu Shuai Deng ◽  
Shu Ming Wen ◽  
Yong Jun Xian ◽  
Shao Jun Bai ◽  
Dan Liu ◽  
...  
Keyword(s):  
Copper Sulfide ◽  
Copper Recovery ◽  
Coarse Grained ◽  
Efficient Utilization ◽  
Two Stage ◽  
Fine Grained ◽  
Sulfide Ore ◽  
Concentrate Grade ◽  
Copper Sulfide Ore ◽  
The Ideal

The valuable minerals of a copper sulfide ore in Chile, mainly consist of chalcopyrite and chalcocite as well as contain small amounts of cuprite. Gangue minerals are mainly chlorite, quartz, calcite, arsenopyrite, etc. Most are coarse-grained disseminated minerals, while some are fine-grained disseminated minerals. Flotation has been used for processing these ores. The grinding fineness, lime dosage, collector type and dosage all have influences on flotation results. In the present work, the best condition of grinding fineness, lime, and collector dosage was used to separate the copper sulfide and other minerals in the ores. The results showed that, in the grinding fineness of −74 μm accounting for 80%, the vast majority of copper minerals were to monomer dissociation. The flowsheet of one stage roughing, two stage scavenging, and two stage cleaning was adopted. The ideal results of 27.58% and 96.89% for the copper concentrate grade and copper recovery, respectively, were obtained.

Recovery of Copper from a High Content of Slime and Refractory Copper Oxide Ore by Flotation

2012 ◽  
Vol 622-623 ◽  
pp. 170-174 ◽  
Author(s):  
Qi Cheng Feng ◽  
Shu Ming Wen ◽  
Kun Xiong ◽  
Jian Liu ◽  
Shao Jun Bai
Keyword(s):  
Copper Oxide ◽  
Copper Recovery ◽  
Flow Sheet ◽  
Flotation Process ◽  
Optimum Parameters ◽  
Concentrate Grade

The study aims to recover copper minerals from a high content of slime and refractory copper oxide ore by flotation process. Based on the research on the properties of the material, the grinding fineness and reagent system are investigated and a technological flow sheet consisting of one roughing flotation, two concentrate flotation, three scavenging flotation and one concentrate-scavenging flotation is adopted. The optimum parameters of flotation experiment are determined as grinding fineness of 90%, dosage of CHO at 200 g/t, dosage of Na2S at 800 g/t and dosage of isoamyl xanthogenate at 1200 g/t. Under such a condition, a copper recovery of 75.03% with a concentrate grade of 18.01% is obtained，which provides a new way for separating the refractory copper oxide ore attached high content of slime.

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