A designed moderately thermophilic consortia with a better performance for leaching high grade fine lead-zinc sulfide ore

2022 ◽  
Vol 303 ◽  
pp. 114192
Author(s):  
Siyu Zhou ◽  
Xiaojian Liao ◽  
Shoupeng Li ◽  
Xiaodi Fang ◽  
Zhijie Guan ◽  
...  
Keyword(s):  
Zinc Sulfide ◽  
High Grade ◽  
Moderately Thermophilic ◽  
Sulfide Ore ◽  
Lead Zinc

Experimental Research on Lead-Zinc Separation of Refractory Lead-Zinc Ore

2014 ◽  
Vol 886 ◽  
pp. 55-58
Author(s):  
Xian Xie ◽  
Kai Hou ◽  
Xiong Tong ◽  
Xiao Wang ◽  
Zheng Bin Deng
Keyword(s):  
Zinc Sulfide ◽  
Inner Mongolia ◽  
Silver Recovery ◽  
Autonomous Region ◽  
X 43 ◽  
Sulfide Ore ◽  
Lead Zinc ◽  
Inner Mongolia Autonomous Region ◽  
Combination Of Collectors ◽  
Zinc Concentrate

A complex lead-zinc sulfide ore from Inner Mongolia Autonomous Region, China, was subjected to this work. Research on mineral processing was conducted according to the properties of the lead-zinc ore. The lead minerals are successfully separated from the zinc minerals with the combination of collectors. Compared to CuSO4, new reagent X-43 as zinc activator shows its advantage in marmatite flotation. With the process utilized in this work, a lead concentrate of 59.67% Pb with a recovery of 78.69% and a zinc concentrate of 50.99% Zn with a recovery of 81.98% are produced. The silver recovery in the lead concentrate is 56.76% while the indium recovery in the zinc concentrate is 42.60%.

Experimental Study of Floatation on Non-Independent Copper Oxide Ore from Jilin Province in China

2012 ◽  
Vol 581-582 ◽  
pp. 851-855
Author(s):  
Rong Dong Deng ◽  
Quan Jun Liu ◽  
Xiao Feng Yang ◽  
Ting Hu ◽  
Feng Hong Ye
Keyword(s):  
Copper Oxide ◽  
Copper Sulfide ◽  
Jilin Province ◽  
High Grade ◽  
High Recovery ◽  
Copper Ore ◽  
Sulfide Ore ◽  
Mineralogical Study ◽  
Oxide Minerals ◽  
Copper Sulfide Ore

Through the processing of mineralogical study on a copper ore from Jilin province in China, it found that the copper exist mostly with the form of chalcopyrite, and others exist with the form of copper oxide minerals which with complex ingredient. The copper oxide minerals are due to the altered of the edge of chalcopyrite, and have not formed the independent copper oxide ore. It belongs to unconventional hard-to-beneficiate copper ore. Coarse grinding fineness and bulk floatation was used to recover the copper oxide ore and copper sulfide ore by using amino double phosphoric acid and butylamine dithiophosphate as the collector. This process was similar to the carrier flotation and achieved an effective processing of the copper oxide ore and obtained a high-grade copper concentrate assaying 15.8% with a high recovery of 82.4%.

scholarly journals Identification of mineralized zones in the Zardu area, Kushk SEDEX deposit (Central Iran), based on geological and multifractal modeling

2016 ◽  
Vol 8 (1) ◽  
Author(s):  
Ahmad Heidari Dahooei ◽  
Peyman Afzal ◽  
Mohammad Lotfi ◽  
Alireza Jafarirad
Keyword(s):  
Massive Sulfide ◽  
Central Iran ◽  
Geochemical Data ◽  
High Grade ◽  
Geological Model ◽  
Fractal Modeling ◽  
Rock Types ◽  
Lead And Zinc ◽  
Lead Zinc ◽  
Ore Types

AbstractThe aim of this paper is to delineate the different lead–zinc mineralized zones in the Zardu area of the Kushk zinc–lead stratabound SEDEX deposit, Central Iran, through concentration–volume (C–V) modeling of geological and lithogeochemical drillcore data. The geological model demonstrated that the massive sulfide and pyrite+dolomite ore types as main rock types hosting mineralization. The C–V fractal modeling used lead, zinc and iron geochemical data to outline four types of mineralized zones, which were then compared to the mineralized rock types identified in the geological model. ‘Enriched’ mineralized zones contain lead and zinc values higher than 6.93% and 19.95%, respectively, with iron values lower than 12.02%. Areas where lead and zinc values were higher than 1.58% and 5.88%, respectively, and iron grades lower than 22% are labelled “high-grade” mineralized zones, and these zones are linked to massive sulfide and pyrite+dolomite lithologies of the geological model. Weakly mineralized zones, labelled ‘low-grade’ in the C– V model have 0–0.63% lead, 0–3.16% zinc and > 30.19% iron, and are correlated to those lithological units labeled as gangue in the geological model, including shales and dolomites, pyritized dolomites. Finally, a log-ratio matrix was employed to validate the results obtained and check correlations between the geological and fractal modeling. Using this method, a high overall accuracy (OA) was confirmed for the correlation between the enriched and high-grade mineralized zones and two lithological units — the massive sulfide and pyrite+dolomite ore types.

Biooxidation of a High-Grade Arsenopyritic Gold Ore Using a Mixed Culture of Moderate Thermophilic Microorganisms

2017 ◽  
Vol 262 ◽  
pp. 215-218
Author(s):  
Hoda Abdolahi ◽  
Ali Ahmadi ◽  
Hamid Zilouei ◽  
Maryam Khezri
Keyword(s):  
Mixed Culture ◽  
Pulp Density ◽  
Critical Parameters ◽  
High Grade ◽  
Stirred Tank Bioreactor ◽  
Thermophilic Microorganisms ◽  
Iron Extraction ◽  
Moderately Thermophilic ◽  
Gold Ore ◽  
Shake Flasks

This study investigated the biooxidation of a high-grade refractory gold ore from the Zarshouran mine (West Azarbaijan, Iran) in shake flasks and a stirred tank bioreactor (STBR) using a mixed culture of moderately thermophilic microorganisms. The influence of four critical parameters including, pH, biooxidation time, nutrient medium type and pulp density on the iron and arsenic extraction as well as gold cyanidation were evaluated in a full factorial design in shake flasks at 45 °C. Maximum iron extraction was obtained in M9K medium, pulp density of 5% (w/v), 15 days of biooxidation time and the pH of 1.6. Biooxidation in the STBR was carried out at the pulp densities of 10% and 20% (w/v), the pH of 1.7 in the M9K medium, in which dissolved oxygen, pH, redox potential, iron and arsenic concentrations were measured during the process. It was found that 61% decrement of sulphur content in the STBR led to recover 80% of gold, which was 43% higher than that in the conventional cyanidation process. It can be concluded that the oxidation of refractory arsenopyrite gold ore can achieved using a moderately thermophilic biooxidation culture.

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