Research and Industry Application of New Process of Low Copper Oxide Ore

2013 ◽  
Vol 634-638 ◽  
pp. 3454-3459
Author(s):  
Ya Wen ◽  
Jian Jun Fang ◽  
Ying Bo Mao ◽  
Shan Wang ◽  
Zhi Cong Wei ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Yunnan Province ◽  
Electrode Position ◽  
Flotation Process ◽  
New Process ◽  
Temperature And Pressure ◽  
Ammonia Leaching ◽  
Technology Indicators ◽  
Extraction Electrode

The experiments of refractory copper oxide ore which comes from Tangdan of Yunnan Province were studied in laboratory using bulk flotation process and a new process that Ammonia leaching-Extraction-Electrode position-Residue flotation under normal temperature and pressure respectively. The results show that new process, compared with bulk flotation, had an effect to add 10.8 percent points to recovery. And then it is confirmed by industry experiment. So it is successfully applied to industry production and technology indicators were improved dramatically.

Ammonia Leaching Study on Refractory Oxidised Copper Ores

2014 ◽  
Vol 563 ◽  
pp. 53-56
Author(s):  
Tie Min Zhang ◽  
Zhi Cong Wei ◽  
Ying Bo Mao
Keyword(s):  
Yunnan Province ◽  
Fluoride Concentration ◽  
Ammonium Fluoride ◽  
Ammonia Concentration ◽  
Optimum Conditions ◽  
Solid Ratio ◽  
Binding Rate ◽  
Temperature And Pressure ◽  
Ammonia Leaching ◽  
Copper Ores

Ammonia leaching research is carried out on a certain oxidised copper ores. The effects of oxidized copper ores which came from Yunnan Province were studied in laboratory in order to find out the optimum leaching conditions under normal temperature and pressure. The ores belonged to typical high binding rate minerals. The optimum conditions obtained were as follows: granding fineness about 90% -0.074mm, ammonia concentration 2 mol/l, ammonium fluoride concentration 1.5mol/l , leaching time 2h, and liquid-solid ratio 3:1.The leaching rate of this ore could reach 86%.

Ammonia Leaching Study on Carbonate Oxidised Copper Ores in Yunnan

2015 ◽  
Vol 723 ◽  
pp. 644-647
Author(s):  
Ke Jun Bi ◽  
Jian Jun Fang ◽  
Tai Guo Jiang ◽  
Guo Dong Li
Keyword(s):  
Yunnan Province ◽  
Ammonia Concentration ◽  
Leaching Rate ◽  
Experimental Conditions ◽  
Solid Ratio ◽  
Copper Leaching ◽  
Temperature And Pressure ◽  
Ammonia Leaching ◽  
Copper Ores ◽  
Validation Experiments

The effects of oxidized copper ores which came from Yunnan province were carried out by using ammonialeaching methods in the laboratory.In order to seek the optimum leaching conditions under normal temperature and pressure,we conducted a series of validation experiments. Theoptimum conditions were obtained as follows: ammonia concentration 2.5mol/L, ammonium sulfateconcentration 2.5mol/L,grinding fineness about 80% -0.074mm, liquid-solid ratio 2.5:1and leaching time was 2.5h. Under these experimental conditions, the copper leaching rate could reach 69.91%.

Recovery of Ultrafine Copper Oxide Mineral with Vacuum Flotation

2012 ◽  
Vol 524-527 ◽  
pp. 1047-1053 ◽  
Author(s):  
Dian Wen Liu ◽  
Jian Jun Fang ◽  
Xiao Lin Zhang ◽  
Shao Jun Bai ◽  
Zhi Cong Wei ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Yunnan Province ◽  
Size Fraction ◽  
Low Grade ◽  
Fine Grained ◽  
Copper Loss ◽  
Oxide Mineral ◽  
Oxide Deposit ◽  
Oxidation Ratio ◽  
Ultrafine Copper

Tangdan copper oxide ore deposit, located in the northeast Yunnan province of China, is the largest independent copper oxide deposit in China. The ore from the deposit is characterized by low grade, high oxidation ratio and fine-grained dissemination, which results in the poor flotation recovery. The analysis of plant flotation data reveals that the loss of copper minerals into tailings is mainly with coarse size fraction, due to its insufficient liberation and finer size, especially for the size fraction below 10 microns, which are very difficult to be floated with conventional flotation methods. In order to improve the flotation performance of the ore, laboratory tests include Hallimond flotation and vacuum flotation were respectively conducted with pure malachite, the dominant copper oxide mineral in the deposit; and the results indicate that a finer grinding fineness up to -325 mesh even -400 mesh is required to decrease the copper loss in the coarse size fraction, and vacuum flotation provides a promising way for the recovery of ultrafine malachites.

scholarly journals A New Collector for Effectively Increasing Recovery in Copper Oxide Ore-Staged Flotation

Minerals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 595
Author(s):  
Renfeng Zhu ◽  
Guohua Gu ◽  
Zhixiang Chen ◽  
Yanhong Wang ◽  
Siyu Song
Keyword(s):  
Particle Size ◽  
Copper Oxide ◽  
High Efficiency ◽  
Average Particle Size ◽  
Economic Feasibility ◽  
Processing Plant ◽  
Average Particle ◽  
Entrainment Rate ◽  
Flotation Process ◽  
New Type

A new method, staged flotation for effectively increasing the recovery of ultra-fine copper oxide ore with a new type of collector (ZH-1, C3-5 carbon chain xanthate) is proposed for the first time. The flotation process and mechanism were examined by flotation tests, entrainment rate analysis, laser particle size experiments and microscopic imagery as well as economic feasibility analysis. It was demonstrated that the collector isoamyl sodium xanthate (ISX) shows a good collection ability (recovery exceeded 95%) for azurite, but the recovery was relatively much lower for malachite (only near 80%) due to the different particle size distribution. The new type of xanthate ZH-1 has shown a high-efficiency collection performance for fine-grained malachite. The recovery achieved for −10 μm malachite was more than 95% when the ZH-1 dosage was 150 mg/L, while the average particle size of −10 μm malachite sharply increased from 4.641 μm to 9.631 μm. The batch flotation results indicated that the copper oxide flotation recovery increased from 79.67% to 83.38%, and the grade also raised from 18.08% to 18.14% after using the staged flotation technology with ZH-1 as collector during the flotation of −25 μm ore. It was confirmed that this technology was quite effective for the recovery of copper oxide at the Dishui Copper Processing Plant, which successfully increased its gross profit by 1.6 million US$ per year.

Review on New Process and New Reagent of Copper Oxide

2014 ◽  
Vol 1010-1012 ◽  
pp. 1618-1621
Author(s):  
Chi Zhang ◽  
Xiao Dong Jia ◽  
Ya Lin Lu ◽  
Dian Wen Liu ◽  
Xiao Lin Zhang
Keyword(s):  
Research Direction ◽  
Treatment Method ◽  
Low Grade ◽  
Important Research ◽  
Paper Briefly ◽  
Flotation Process ◽  
High Efficient ◽  
New Process ◽  
Copper Ores ◽  
Important Research Direction

The paper briefly analyzes and systematically summarizes flotation process and chemical treatment method of low-grade oxidized copper ores in recent years. The new high-efficient collectors and system of reagent combined usage are developed widely and have become an important research direction of oxidized copper ores.

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.

Study on Industrialization of Mid-Low Grade Collophanite Flotation in Yunnan Province

2013 ◽  
Vol 830 ◽  
pp. 431-434
Author(s):  
Jun Bo Liu ◽  
Quan Jun Liu ◽  
Hong Xiao ◽  
Rong Dong Deng
Keyword(s):  
Laboratory Experiment ◽  
Yunnan Province ◽  
Low Grade ◽  
Reverse Flotation ◽  
Environment Effect ◽  
Flotation Process

Efficient reagents were used in the direct-reverse flotation process to process the mid-low grade Si-Ca collophanite. We got nice results in the laboratory experiment and expanding test. These results showed that our study was successful in technology, economy and environment effect. It also offers support for building flotation mill in future.

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.

Study on Application of Intensifying Depression Talcum in the Copper Sulphide Flotation

2013 ◽  
Vol 295-298 ◽  
pp. 3043-3049
Author(s):  
Guo Dong Li ◽  
Li Kun Gao ◽  
Hui Xin Dai ◽  
Hai Fang Dong
Keyword(s):  
Yunnan Province ◽  
Adverse Impact ◽  
Closed Circuit ◽  
Sodium Hexametaphosphate ◽  
Copper Sulphide ◽  
Depression Effect ◽  
Flotation Process ◽  
Sulphide Ores ◽  
The Future

Talcum is a common gangue with which sulphide ores are associated, it has an adverse impact on sulphide ores flotation and product index due to its high natural floatability. In this paper it takes talcum-bearing copper sulphide ores from DongChuan in Yunnan province as experimental samples, and a series of tests on depressing talcum in the copper suphide ore flotation were carried out. Results show that when took the composed CMC and sodium hexametaphosphate as depressant with respective dosage 200g/t and 300g/t, it obtained a favourableeffect. In addition, depression effect can get improved with the dosage of collector increasing properly, it shows that when took the composed CMC and sodium hexametaphosphate as depressant, it can make the flotation process stable.It employed rougher-scavenger-three cleaners system as the closed-circuit flowsheet, and attained a Cu concentrate product of whom grade and recovery is 16.16%, 78.78% respectively.The results might contribute to dispose some similar talcum-bearing sulphide ores in the future.

Concentration of Silicate-Calcareous Phosphate Rocks

2013 ◽  
Vol 316-317 ◽  
pp. 878-881
Author(s):  
Rong Dong Deng ◽  
Quan Jun Liu ◽  
Ting Hu ◽  
Feng Hong Ye
Keyword(s):  
Yunnan Province ◽  
Reverse Flotation ◽  
Phosphate Rocks ◽  
Flotation Process ◽  
Mineral Characteristics ◽  
Phosphate Concentrate

The paper focuses on the mineral characteristics of silicate-calcareous phosphate from Yunnan province and researches flotation conditions and flowsheet of phosphate. Using double-reverse flotation process to reduce the silicon and MgO, and a phosphate concentrate with P2O5 grade of 30.13%, SiO2 grade of 11.12% and P2O5 recovery of 80.16% was obtained.

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