scholarly journals BIOLEACHING OF COPPER FROM CARAIBA MINE ORE (BRAZIL)

2019 ◽  
Vol 49 (1) ◽  
pp. 25-29
Author(s):  
L. A. BERNARDEZ ◽  
L.R. P. DE ANDRADE LIMA ◽  
L.E. L. DE OLIVEIRA
Keyword(s):  
Low Temperature ◽  
Mine Tailings ◽  
Copper Sulfide ◽  
Gold Mine ◽  
Copper Ore ◽  
Chemical Leaching ◽  
Sulfide Ore ◽  
Gold Mine Tailings ◽  
Acid Mining Drainage ◽  
Copper Sulfide Ore

The bioleaching of copper ore from the Caraiba Mine was assessed. A microorganism, Acidiothiobacillus ferrooxidans, was isolated from samples collected directly in acid mining drainage in a gold mine tailings pound and used in the bioleaching of the copper sulfide ore. This ore is composed mainly of 28% of oxidized species, 43% of secondary sulfides and 24% of primary sulfide. The shaking flasks experiments with the Caraiba ore showed copper chemical leaching of about 37% and copper bioleaching of about 60% within 60 days at low temperature and native microorganism.

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%.

Recovery Copper from a Complex Copper Sulfide Ore of Yunnan by Using Flotation

2015 ◽  
Vol 737 ◽  
pp. 839-842
Author(s):  
Yi Jie Wang ◽  
Shu Ming Wen ◽  
Dan Liu ◽  
Chuan Fa Cui ◽  
Bin Zhang
Keyword(s):  
Copper Sulfide ◽  
Sodium Sulfide ◽  
Optimal Conditions ◽  
Copper Ore ◽  
Copper Concentrate ◽  
Sulfide Ore ◽  
Open Test ◽  
Copper Sulfide Ore ◽  
Complex Copper ◽  
Large Deposits

Copper ore is the main mineral for the large deposits. Copper minerals are mostly consisting of chalcopyrite, secondly consisting of bornite, there are traces of processing copper blue and malachite, the mineral is disseminated by coarse granularity. This mineral is easy to processing. Production process was using by the process of grinding-flotation. After grinding fineness, lime dosage, sodium sulfide dosage, collector and frother dosage, were determined by the open test. Closed circuit experiment was conducted by those optimal conditions identified in the above test, the recovery of copper concentrate is 88.38% and the grade of copper concentrate is 14.37%.

scholarly journals Leaching of Primary Copper Sulfide Ore in Chloride-Ferrous Media

Minerals ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 312 ◽  
Author(s):  
Karina Salinas ◽  
Osvaldo Herreros ◽  
Cynthia Torres
Keyword(s):  
Copper Sulfide ◽  
Porphyry Copper ◽  
Copper Deposit ◽  
Porphyry Copper Deposit ◽  
Copper Extraction ◽  
Leaching Tests ◽  
Chemical Leaching ◽  
Sulfide Ore ◽  
Two Temperatures ◽  
Copper Sulfide Ore

Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chloride-ferrous media at two temperatures. The study focused on whether this chemical leaching system could be applied at an industrial scale. Leaching tests were conducted in columns loaded with approximately 50 kg of agglomerated ore; the ore was first cured for 14 days and then leached for 90 days. The highest copper extraction, 50.23%, was achieved at 32.9 °C with the addition of 0.6 kg of H2SO4 per ton of ore, 0.525 kg of NaCl per ton of ore, and 0.5 kg of FeSO4 per ton of ore. In respect to copper extraction, the most effective variables were temperature and the addition of NaCl.

scholarly journals Potential utilization of artisanal gold-mine tailings as geopolymeric source material: preliminary investigation

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
John Paul J. Aseniero ◽  
Einstine M. Opiso ◽  
Marybeth Hope T. Banda ◽  
Carlito B. Tabelin
Keyword(s):  
Mine Tailings ◽  
Preliminary Investigation ◽  
Source Material ◽  
Gold Mine ◽  
Gold Mine Tailings

scholarly journals Growth, histochemical and physiological responses of non-edible oil producing plant (Reutealis trisperma) to gold mine tailings

2018 ◽  
Vol 19 (4) ◽  
pp. 1294-1302 ◽  
Author(s):  
MUHAMMAD HILMI ◽  
HAMIM HAMIM ◽  
YOHANA C. SULISTYANINGSIH ◽  
TAUFIKURAHMAN TAUFIKURAHMAN
Keyword(s):  
Mine Tailings ◽  
Shoot Growth ◽  
Physiological Responses ◽  
Gold Mine ◽  
Histochemical Analysis ◽  
Root And Shoot Growth ◽  
Gold Mine Tailings ◽  
Chlorophyll A And B ◽  
Anatomical Characters ◽  
High Level

Hilmi M, Hamim H, Sulistyaningsih YC, Taufikurahman. 2018. Growth, histochemical and physiological responses of nonedibleoil producing plant (Reutealis trisperma) to gold mine tailings. Biodiversitas 19: 1294-1302. Reutealis trisperma (Blanco) AiryShaw is a non-edible biodiesel producing plant that is able to grow well in various unfavorable environmental conditions. The studyaimed to analyze the growth, physiological, and anatomical responses of R. trisperma to gold mine tailings. Three-month-old of R.trisperma were grown in 8 kg of polybags contained with mixed soil-compost medium treated with 0, 25, 50 and 100% of gold minetailings for 3 months. Root and shoot growth, physiological and anatomical characters, and histochemical analysis of Pb inside the rootsand leaves were examined. The root and shoot growth as well as chlorophyll a and b contents of R. trisperma grown in sole gold minetailing at 100% significantly decreased, while at the lower concentration of gold mine tailings, the decrease of the growth performanceswas not significant, or even increased shown in that of 25% of tailing treatment. The treatment of gold mine tailing at 100% alsoinduced lipid peroxidation, indicated by the significant increase in malondialdehyde (MDA) contents in the root as well as the leaves.Histochemical analysis showed that accumulation of Pb occurred both in roots as well as in leaves of R. trisperma treated with 100% oftailings. High-level tailing treatment also induced anatomical alteration in roots as well as leaves of the species. These results indicatedthat gold mine tailings induced oxidative stress in roots and leaves of R. trisperma resulted in growth inhibition.

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