Flotation of Low-Grade DongChuan Copper Oxide Ores with Xanthate and Hydroxamate Collectors

2013 ◽  
Vol 803 ◽  
pp. 137-141 ◽  
Author(s):  
Fei Xiong ◽  
Yan Jun Li ◽  
Zhong Hui Zhang ◽  
Yao Zhong Lan
Keyword(s):  
Copper Oxide ◽  
Laboratory Scale ◽  
Copper Recovery ◽  
Low Grade ◽  
One Stage ◽  
Concentrate Grade

A hydroxamate collector AM28 is used in conjunction with Potassium Amyl Xanthate (PAX) to allow the flotation of the low-grade copper oxide ores from DongChuan Mine. A series of batch laboratory scale flotation tests are conducted for oxide copper minerals to establish the flotation response and the suitability of the collectors. From the rougher flotation tests performed, the highest copper recovery obtained is 78.9% at a concentrate grade of 2.5% using AM28 dosage of 740g/t and PAX dosage of 20g/t. With one stage of cleaning, the obtained copper grade increases to 9.6% with the copper recovery at 64.9%.

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.

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.

Flotation of a Refractory Copper Oxide Ore Using Ammonium Bicarbonate as Activator

2012 ◽  
Vol 581-582 ◽  
pp. 969-974
Author(s):  
Ya Wen ◽  
Jian Jun Fang ◽  
Ying Bo Mao ◽  
Shan Wang ◽  
Jian Liu ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Ammonium Bicarbonate ◽  
Copper Recovery ◽  
Remarkable Effect ◽  
Oxide Mineral ◽  
Flotation Performance ◽  
Concentrate Grade

Flotation of Jinping refractory copper oxide ore activated by a combined reagent of amine and ammonium has been fully studied in present study. The results show that the combined reagent (i.e., ethylenediamine phosphate and ammonium bicarbonate) has a remarkable effect on flotation performance, which can not only effectively activate the refractory copper oxide mineral, but also depress the slime of bauxite and some other impurities, such as cadmium, magnesium and silicon, etc. At last, a copper recovery of 76% with a concentrate grade of 21.65% was achieved from the ore.

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.

scholarly journals Estimation and Improvement of Recovery of Low Grade Copper Oxide Using Sulfide Activation Flotation Method Based on GA–BPNN

Processes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 583
Author(s):  
Wenlin Nie ◽  
Jianjun Fang ◽  
Shuming Wen ◽  
Qicheng Feng ◽  
Yanbing He ◽  
...  
Keyword(s):  
Neural Network ◽  
Genetic Algorithm ◽  
Copper Oxide ◽  
Sodium Sulfide ◽  
Back Propagation ◽  
Back Propagation Neural Network ◽  
Copper Recovery ◽  
Low Grade ◽  
Sulfide Flotation ◽  
Bpnn Model

Copper oxide ore is an important copper ore resource. For a certain copper oxide ore in Yunnan, China, experiments have been conducted on the grinding fineness, collector dosage, sodium sulfide dosage, inhibitor dosage, and activator dosage. The results showed that, by controlling the above conditions, better sulfide flotation indices of copper oxide ore are obtained. Additionally, ammonium bicarbonate and ethylenediamine phosphate enhanced the sulfide flotation of copper oxide ore, whereas the combined activator agent exhibited a better performance than either individual activator. In addition, to optimize all of the conditions in a more reasonable way, a combination of the 5-11-1 genetic algorithm and back propagation neural network (GA–BPNN) was used to set up a mathematical optimization model. The results of the back propagation neural network (BPNN) model showed that the R2 value was 0.998, and the results were in accordance with the requirement model. After 4169 iterations, the error in the objective function was 0.001, which met the convergence requirements for the final solution. The genetic algorithm (GA) model was used to optimize the BPNN model. After 100 generations, a copper recovery of 87.62% was achieved under the following conditions: grinding fineness of 0.074 mm, which accounted for 91.7%; collector agent dosage of 487.7 g/t; sodium sulfide dosage of 1157.2 g/t; combined activator agent dosage of 537.8 g/t; inhibitor dosage of 298.9 g/t. Using the combined amine and ammonium salt to enhance the sulfide activation efficiency, a GA–BPNN model was used to achieve the goal of global optimizations of copper oxide ore and good flotation indices were obtained.

scholarly journals Construction of isotherms in solvent extraction of copper

2009 ◽  
Vol 63 (4) ◽  
pp. 309-312 ◽  
Author(s):  
Vladimir Cvetkovski ◽  
Vesna Conic ◽  
Milovan Vukovic ◽  
Goran Stojanovski ◽  
Milena Cvetkovska
Keyword(s):  
Solvent Extraction ◽  
Organic Solvent ◽  
Electrolyte Solution ◽  
Mine Water ◽  
Copper Recovery ◽  
Equilibrium Isotherms ◽  
Technological Parameters ◽  
One Stage ◽  
Two Stages

The aim of this work is construction of equilibrium isotherms in solvent extraction. Technological parameters have been predicted for treatment of mine water by solvent extraction and electrowining. Two stages of extractions and one stage of stripping have been predicted for copper recovery by analyzing the equilibrium isotherms. The process was performed on mine water with 2,5 g/dm3 Cu2+, 3 g/dm Fe2+, pH 1,8, using 9 vol% LIX 984N in kerosene (organic solvent), with 95 and 98% stages efficiencies, respectively. This course produced an advanced electrolyte solution, suitable for electrowining and cathodic copper recovery, containing 51 g/dm3 Cu2+ and 160g/dm3 H2SO4 from a 30 g/dm3 Cu and 190 g/dm3 H2SO4.

Copper Recovery from Yulong Complex Copper Oxide Ore by Flotation and Magnetic Separation

JOM ◽  
2017 ◽  
Vol 69 (9) ◽  
pp. 1563-1569 ◽  
Author(s):  
Junwei Han ◽  
Jun Xiao ◽  
Wenqing Qin ◽  
Daixiong Chen ◽  
Wei Liu
Keyword(s):  
Copper Oxide ◽  
Magnetic Separation ◽  
Copper Recovery ◽  
Complex Copper
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