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%.

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%.

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.

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 of the heat recovery rate in a porous medium combustor under different hydrogen combustion modes

2016 ◽  
Vol 41 (33) ◽  
pp. 15043-15055 ◽  
Author(s):  
Siou-Sheng Su ◽  
Wei-Hsiang Lai ◽  
Sheng-Jye Hwang
Keyword(s):  
Experimental Study ◽  
Porous Medium ◽  
Recovery Rate ◽  
Heat Recovery ◽  
Hydrogen Combustion ◽  
Combustion Modes

Experimental Study on the Delivery Rate and Recovery Rate of ZrCo Hydride for ITER Application

2008 ◽  
Vol 54 (1) ◽  
pp. 27-30 ◽  
Author(s):  
Myunghwa Shim ◽  
Hongsuk Chung ◽  
Hiroshi Yoshida ◽  
Kwangrag Kim ◽  
Seungyon Cho ◽  
...  
Keyword(s):  
Experimental Study ◽  
Recovery Rate ◽  
Delivery Rate

Primary Copper Ore Leaching by Leaching Solution Adjusted Oxidation-Reduction Potential in Column

2015 ◽  
Vol 1130 ◽  
pp. 355-358
Author(s):  
Tatsuya Shinkawa ◽  
Taro Kamiya ◽  
Kazuhiro Kojima ◽  
Tadashi Chida
Keyword(s):  
Sulfuric Acid ◽  
Recovery Rate ◽  
Copper Sulfide ◽  
Copper Recovery ◽  
Copper Ore ◽  
Column Leaching ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Copper Leaching ◽  
Leaching Solution

Copper ore is classified into three groups; primary copper sulfide, copper oxide and secondary copper sulfide. Leaching copper from primary copper sulfide, such as chalcopyrite, with sulfuric acid takes longer time than from copper oxide and secondary copper sulfide. As such, an oxidant is required to extract copper from chalcopyrite. In this study, column leaching tests were carried out using primary copper sulfide ores produced in an iron oxide copper gold (IOCG) deposit and rich in iron in coparison to porphyry copper ores. The columns of 10 cm diameter and 100 cm long had a double tube structure so that the column temperature can be kept at desired temperature by circulating warm water in the outer tube. The oxidation-reduction potential (ORP) of the leaching solutions were adjustedto 400, 450 and 500 mV vs Ag/AgCl. The column leaching test using just pH 2.0 sulfuric acid without adjustment of ORP at 45 °C got a copper recovery rate of 37 % in 400 days. On the other hand, with ORP adjusted leaching solutions of pH 2.0 sulfuric acid containing 500 mg/L Fe, the copper recovery rate reached up to 87 % in 400 days.In addition, it was necessary to keep the temperature above 45 oC to enhance copper leaching by ORP adjusted leaching solution. The result of the column leaching test at room temperature (around 30 °C) using ORP adjusted leaching solution shows that the recovery rate of copper is lower than the result at 45 °C. The ORP adjustment of leaching solution is effective for leaching copper from primary copper sulfide ore, however, the leaching temperature needs to be kept above 45 °C. As a result, it makes clear that copper leaching is enhanced by utilization of ORP adjusted leaching solutions and suggests that the solution ORP control is important to the application of bioleaching.

A study on mechanical properties after bonded repair of sandwich composite materials

2020 ◽  
Vol 34 (07n09) ◽  
pp. 2040033 ◽  
Author(s):  
Sunghoon Kim ◽  
Jongrok Ha ◽  
Seongwon Yoon ◽  
Myunghyun Kim
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Composite Materials ◽  
Recovery Rate ◽  
Fatigue Tests ◽  
Experimental Results ◽  
Sandwich Composite ◽  
Bonded Repair ◽  
Patch Repairs ◽  
The Difference

In this paper, an experimental study was conducted to determine the efficiency of repair methods for sandwich composites used as hull materials in leisure ships. The method was applied to external, scarf, and step patch repairs using an epoxy bond. The load was described in terms of the hogging and sagging moments applied to the hull by waves. Static and fatigue tests were performed to derive the recovery rate of repaired specimens. The experimental results indicated that the recovery rate of specimens with the scarf patch was the highest at 91.80% when the hogging moment was applied. However, the difference in the recovery rate between hogging and sagging moments was the lowest for specimens with the step patch, and the recovery rate was high at 89.96% and 85.15%, respectively.

Experimental Study on Comprehensive Recovery of Valuable Minerals from Flotation Tailings in Copper-Molybdenum Mine

2014 ◽  
Vol 878 ◽  
pp. 234-243 ◽  
Author(s):  
Xin Tan ◽  
Wei Guo Wu ◽  
Zhong Ming Wang ◽  
Xin Tan ◽  
Hai Ying Liu
Keyword(s):  
Experimental Study ◽  
Recovery Rate ◽  
Coarse Fraction ◽  
Particle Sizes ◽  
Flotation Tailings ◽  
Iron Concentrate ◽  
Tailings Pond ◽  
Mineralogical Characteristics ◽  
Molybdenum Concentrate ◽  
Comprehensive Recovery

In this paper, the mineral processing experimental study on the flotation tailings which are stored in the tailings pond of a copper-molybdenum mine is conducted, with a large content of slimes and kaolinite in the tailings and the fine particle sizes and poor locked particles of most of valuable minerals disseminated in the gangue minerals taken into consideration. Based on the mineralogical characteristics of the ore, a combined process is adopted in order to recover copper, molybdenum, sulfur and iron minerals from the ore, this process contains a series of steps in a particular sequence, which are pre-desliming of the ore, bulk flotation of copper and molybdenum of the coarse fraction, separation of Cu-Mo, separating sulfur from bulk flotation tailings and low-intensity magnetic separation of iron from sulfur flotation tailings. The results of the closed circuit test show that it can be obtained copper concentrate with a Cu grade of 20.61% and a recovery rate of 28.52%, molybdenum concentrate with a Mo grade of 36.00% (containing 20% C) and a recovery rate of 43.35%, sulfur concentrate with a S grade of 35.66% and a recovery rate of 42.58%, and iron concentrate with a Fe grade of 68.40% and a recovery rate of 6.85% (75% of phase recovery of magnetite).

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