Research on Bulk Floatation Discarding Tailing of Copper and Zinc Polymetallic Sulfide Ores

2014 ◽  
Vol 881-883 ◽  
pp. 1621-1625
Author(s):  
Hai Yun Xie ◽  
Qun Jie Ye ◽  
Ping Zhou ◽  
Li Kun Gao ◽  
Xiong Tong ◽  
...  
Keyword(s):  
Zinc Sulfide ◽  
Yunnan Province ◽  
Loss Rate ◽  
Influence Factors ◽  
Sulfide Ores ◽  
Butyl Xanthate ◽  
Flotation Reagents ◽  
Sulfide Ore ◽  
Development And Utilization ◽  
Copper Zinc

This paper is aimed at a typical complex polymetallic copper-zinc sulfide ores in Yunnan province, China, and adopted the process of bulk floatation discarding tailing under coarse grinding condition, the influence factors are researched such as grinding fineness, types and dosage of flotation reagents. When the coarse grinding size-74μm 75% and butyl xanthate and ethyl xanthate as combination collector, The amount of flotation discarding tailing is 60% for crude ores, the tailings contain 0.058% Cu, 0.027% Pb and 0.12% Zn, the loss rate of various metals in tailing is 3.21% Cu, 5.49% of Pb and 3.35% of Zn. This research has referenced significance to economical development and utilization of copper-zinc sulfide ore resources.

RESEARCHING REGULATIONS OF FIRE SULFIDE ORE AND BREED DURING COMBINED DEPOSIT DEVELOPMENT

2020 ◽  
Vol 2 (1) ◽  
pp. 341-356
Author(s):  
M.V. RYLNIKOVA ◽  
◽  
G.I. AYNBINDER ◽  
N.A. MITISHOVA ◽  
L.A. GADZHIEVA ◽  
...  
Keyword(s):  
Research Methods ◽  
Sulfide Ores ◽  
Oxidation Processes ◽  
Sulfide Ore ◽  
Copper Zinc ◽  
Copper Pyrite

Mineralogical and mineralogical-graphic analyzes of samples of the host and ore-bearing rocks of copper-zinc-pyrite deposits were carried out. The Program and the corresponding research methods offactors and patterns of development of the oxidation processes of sulfide ores and rocks have been developed and tested. The results of chemical-technological studies of sulfur-pyrite, copper-pyrite, copper-zinc ores, sericite-quartz rocks and metamorphosed tuffs are presented.

scholarly journals Influence of copper-zinc sulfide ores elements on bone tissue remodeling and regulative factors

2015 ◽  
Vol 96 (5) ◽  
pp. 783-787 ◽  
Author(s):  
E R Farshatova ◽  
T I Ganeev ◽  
I A Men’shikova ◽  
L V Sarmeneeva ◽  
N V Nurgaleev ◽  
...  
Keyword(s):  
Parathyroid Hormone ◽  
Bone Remodeling ◽  
Zinc Sulfide ◽  
Nuclear Factor Kappa B ◽  
Type I ◽  
Nuclear Factor ◽  
Nuclear Factor Kappa ◽  
Receptor Activator ◽  
Sulfide Ore ◽  
Copper Zinc

Aim. Characterize the intensity of bone remodeling, balance of hormones and local cytokines regulating bone remodeling and bone metabolism, at chronic intake of copper-zinc sulfide ores elements. Methods. A total of 101 miner, producing copper-zinc sulfide ore by underground mining, and 30 employees of ground services of OAO «Uchaly Mining and Processing Plant», were examined. Experimental studies were performed on 60 white adult male rats, distributed to control and experimental groups. The experimental animals of the study group got copper-zinc sulfide ore powder in a 2% starch solution daily for 3 months as a suspension at the dose of 60 mg per 100 g of body weight. The serum levels of testosterone, parathyroid hormone, total thyroxine and triiodothyronine, cortisol, 25-hydroxyvitamin D, soluble Receptor activator of nuclear factor kappa-B ligand, osteoprotegerin, sclerostin and C-terminal telopeptide of collagen type I, as well as bone alkaline phosphatase activity were determined. Results. Miners who were diagnosed with decreased bone density had increased level of C-terminal telopeptide of collagen type I, with bone alkaline phosphatase activity similar to the control group. In miners with physiological level of bone density, there was no statistically significant decrease in blood testosterone level, in the groups with low and very low bone mineral density there was a statistically significant decrease in testosterone level and increased level of parathyroid hormone. Experimental animals exposed to sulfide ore had serum levels of testosterone, 25-hydroxyvitamin D, thyroxine and triiodothyronine decreased, and increased level of parathyroid hormone and cortisol. Together with that, blood concentration of sclerostin was increased, level of osteoprotegerin - decreased, and soluble Receptor activator of nuclear factor kappa-B ligand was not changed. Conclusion. Long-term intake of copper-zinc sulfide ore leads to an imbalance of bone remodeling with a predominance of resorption. It is associated with the reduction of testosterone, calcidiol and thyroid hormones levels providing anabolic and anti-catabolic effect on bone metabolism, and overproduction of parathyroid hormone and cortisol, stimulating osteolysis. Receptor activator of nuclear factor kappa-B ligand / osteoprotegerin ratio and sclerostin level increases.

scholarly journals The measurement of competitiveness of forest green food industry in Yunnan Province

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261133
Author(s):  
Zhongming Li ◽  
Wei Fu ◽  
Thomas Bilaliib Udimal ◽  
Mingcan Luo ◽  
Jiancheng Chen
Keyword(s):  
Competitive Advantage ◽  
Food Industry ◽  
Yunnan Province ◽  
Evaluation Method ◽  
Full Potential ◽  
Fuzzy Evaluation ◽  
Key Factors ◽  
Green Food ◽  
Medium Level ◽  
Development And Utilization

Improvement in living standards has led to the development and utilization of forest green foods. The study seeks to examine the foundation and potential of forest green food industry in Yunnan Province. By constructing the industrial competitive advantage model, this paper measured and analyzed the competitiveness of forest green food industry in Yunnan Province from 2016 to 2020 by using fuzzy evaluation method and AHP. The conclusions were as follows: (1) The competitiveness of forest green food industry in Yunnan Province was at a medium level with competitiveness index of 83.98. (2) The competitive advantage of forest green food industry in Yunnan Province mainly depended on key factors such as natural endowment and education level. The area is however not having comparative advantage in general factors and important factors. Therefore, there is the need to put in place measures to realise the full potential of forest green food industry in the area by providing players in the sector with requisite skills.

Role of geochemical barriers in forming sulfide ores in various geological environments

2021 ◽  
pp. 63-73
Author(s):  
IRINA GABLINA
Keyword(s):  
Sulfide Ores ◽  
Atlantic Region ◽  
Geochemical Barriers ◽  
Sulfide Ore ◽  
Cupriferous Sandstone ◽  
Central Atlantic ◽  
Ore Types ◽  
Long Term Studies

Based on long-term studies of cupriferous sandstone and shale deposits, as well as deepsea sulfide ores, various types of geochemical barriers where sulfides form are shown. Cupriferous sandstones and shales form as metals precipitate from redbed reservoir waters on H2S geochemical barrier. Syngenetic and epigenetic barrier types are identified. Oceanic sulfide ores from the Central Atlantic region were studied; as a result, a new hydrothermal-metasomatic sediment-hosted mineralization type was found, along with previously known sulfide ore types (massive ores on the seafloor and stockwork ores in substrate rocks). Geochemical seafloor sulfide formation environments and those in biogenic carbonate bottom sediments are examined.

Research on Flotation of Copper Sulfide Ore in Yunnan Province

2014 ◽  
Vol 522-524 ◽  
pp. 1471-1475
Author(s):  
Tie Min Zhang ◽  
Jian Jun Fang ◽  
Tai Guo Jiang ◽  
Shan Wang ◽  
Ying Bo Mao
Keyword(s):  
Experimental Research ◽  
Copper Sulfide ◽  
Yunnan Province ◽  
Separation Process ◽  
Process Conditions ◽  
Successful Recovery ◽  
Sulfide Ore ◽  
Test Requirements ◽  
Copper Sulfide Ore

Floatation experimental research is carried out on a certain complicated ore containing mixed sulphides in Yannan province. For the characteristics of the mine and the scene of the test requirements, the use of mixed flotation-separation process has achieved a successful recovery of useful elements. Combination inhibitors can effectively achieve the separation of copper and sulfur .Under the proper process conditions ,the good technical indexes were obtained.

Bio-Heap Leaching of Primary Copper Sulfide Ore by JOGMEC

2017 ◽  
Vol 262 ◽  
pp. 99-102
Author(s):  
Tatsuya Shinkawa ◽  
Tadashi Chida ◽  
So Furukawa ◽  
Taro Kamiya
Keyword(s):  
Copper Sulfide ◽  
Heap Leaching ◽  
Sulfide Ores ◽  
High Iron Content ◽  
Iron Oxidizing Bacteria ◽  
Acid Consumption ◽  
Sulfide Ore ◽  
Leaching Solution ◽  
Sulfur Oxidizing ◽  
Copper Sulfide Ore

JOGMEC has been carrying out the study on primary copper sulfide ores leaching for recovering copper economically and efficiently by heap leaching. In our study, we have been using the primary copper sulfide ore produced in an IOCG deposit. The ore is characterized by high iron content and high acid consumption in leaching. For the optimization of the leaching, the conditions such as ore size, agglomeration, pH and irrigation rate of leaching solution were examined with column leach tests. The best result was over 80 % extraction of copper in 150 days with leaching solution of 1 M sulfuric acid and temperature of 45 °C. In this experiment, the fines of the ore sample were removed before putting it into the column to keep the permeability of the ore bed. In these column leach tests, the Fe2+/total-Fe ratio of PLS decreased gradually by the activity of naturally grown iron-oxidizing bacteria. The bacteria in PLS, which have the ability of iron-oxidizing and sulfur-oxidizing, were identified by next-generation sequencing as Acidithiobacillus caldus and Sulfobacillus thermosulfidooxidans. We also carried out bench-scale tests with about 200 tons of the primary copper sulfide ores. Iron-oxidizing and sulfur-oxidizing bacteria were identified in the leaching solution as same with column leach tests. It is considered that the bacteria worked in the leaching solution and on the surface of the ores.

Study on Simulation of Multi-Loop Networked Control System

2013 ◽  
Vol 694-697 ◽  
pp. 2065-2068 ◽  
Author(s):  
Fang He ◽  
Jia Jia Pang
Keyword(s):  
Control System ◽  
Control Strategy ◽  
Production Line ◽  
Loss Rate ◽  
Transmission Rate ◽  
Influence Factors ◽  
Networked Control System ◽  
Network Scheduling ◽  
Uncertainty Factors ◽  
Work Done

Multi-loop NCS is widely used in machinery networked manufacturing production line. The performances of NCS are influenced by the network scheduling and some uncertainty factors, such as transmission rate, delay, loss rate of packet, disturbance, and so on. Considering these influence factors, a simulation model of a multi-loop is constructed using TrueTime toolbox of Matlab software. The related study methods of performance of NCS are given. As the result of simulation, the performances of multi-loop NCS are observed and analyzed. The work done in this paper is very meaningful and helpful to further make related control strategy improving the research on performances of multi-loop NCS.

scholarly journals Effect of Magnesium on the Hydrophobicity of Sphalerite

Minerals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1359
Author(s):  
Gloria I. Dávila-Pulido ◽  
Adrián A. González-Ibarra ◽  
Mitzué Garza-García ◽  
Danay A. Charles
Keyword(s):  
Contact Angle ◽  
Zeta Potential ◽  
Zinc Sulfide ◽  
Sodium Carbonate ◽  
Thermodynamic Simulation ◽  
Bulk Solution ◽  
Sulfide Ores ◽  
Recycled Water ◽  
Negative Effects ◽  
Dissolved Species

The use of untreated recycled water has negative effects in the flotation of zinc sulfide ores due to the presence of dissolved species, such as magnesium and calcium. Although it has been found that magnesium is a more potent depressant than calcium, it has not been investigated in this role or for the effect of adding sodium carbonate. The results of an investigation to evaluate the effect of magnesium on the hydrophobicity of Cu-activated sphalerite conditioned with Sodium Isopropyl Xanthate (SIPX) are presented. Zeta potential of natural and Cu-activated sphalerite as a function of the conditioning pH and Cu(II) concentration, respectively, was first evaluated. Later, the effect of pH and presence of magnesium on the contact angle of Cu-activated sphalerite conditioned with SIPX was studied; it was also evaluated the effect of sodium carbonate to counteract the effect of magnesium. Cu-activation enhances the zeta potential of sphalerite up to a concentration of 5 mg/L. Contact angle tests, thermodynamic simulation, and surface analysis showed that magnesium hydroxide precipitates on the sphalerite surface at pH 9.6, decreasing its hydrophobicity. Addition of sodium carbonate as alkalinizing agent precipitates the magnesium in the form of a species that remained dispersed in the bulk solution, favoring the contact angle of Cu-activated sphalerite and, consequently, its hydrophobicity. It is concluded that the use of sodium carbonate as alkalinizing agent favors the precipitation of magnesium as hydromagnesite (Mg5(OH)2(CO3)4∙4H2O) instead of hydroxide allowing the recovery of sphalerite.

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