Bioprocessing of Mining and Metallurgical Wastes Containing Non-Ferrous and Precious Metals

2013 ◽  
Vol 825 ◽  
pp. 301-304 ◽  
Author(s):  
Aleksander Bulaev ◽  
Maxim I. Muravyov ◽  
Tatyana Pivovarova ◽  
Natalya V. Fomchenko ◽  
Tamara F. Kondrat'eva
Keyword(s):  
Converter Slag ◽  
Precious Metals ◽  
Metallurgical Waste ◽  
Efficient Technology ◽  
Sulphide Ores ◽  
Metallurgical Wastes ◽  
Experimental Parameters ◽  
Copper Zinc ◽  
Free Metal ◽  
Pyrite Tailings

Mining and metallurgical treatments of sulphide ores are characterised by present significant losses of non-ferrous and precious metals as different types of waste. These elements are accumulated in heaps due to the lack of efficient technology for the recovery of the metals from metallurgical waste. The treatment of two types of industrial metallurgical waste (copper converter slag and old flotation pyrite tailings) containing non-ferrous and precious metals were examined in the laboratory. Leaching of the slag containing 2.74% Cu (as digenite, bornite, and free metal) and 2.49% Zn (as a ferrite ZnFe2O4 and silicate) by an Fe3+-containing solution was studied. The effect of various experimental parameters on the leaching dynamics of copper, zinc, and iron under batch conditions was investigated. The following experimental parameters were recommended: a pH of 1.5, a pulp density of 10% (w/v), a temperature of 70 °C, and an initial Fe3+ concentration of 15 g/L. Leaching under these conditions resulted in the solubilisation of 89.4% copper and 35.3% zinc within 2.5 hours. Percolation leaching of the pyrite tailings containing 0.29% Cu (as chalcopyrite), 0.26% Zn (as sphalerite), 0.00007% gold, and 0.00108% silver was also studied. Acidic percolation leaching and the resulting biooxidation lasting 134 days resulted in the solubilisation of 73.4% zinc and 50.8% copper. The recovery rates of gold and silver from the bioleaching residues by cyanidation were 57.2% and 50.7%, respectively. The data obtained in the present work may be used to estimate the operating parameters for the industrial-scale processing of non-ferrous and precious metals from mining and metallurgical waste.

Leaching by ferric sulphate of raw and concentrated copper-zinc complex sulphide ores

1992 ◽  
Vol 36 (3-4) ◽  
pp. 245-257 ◽  
Author(s):  
D. Buttinelli ◽  
R. Lavecchia ◽  
F. Pochetti ◽  
A. Geveci ◽  
N. Guresin ◽  
...  
Keyword(s):  
Zinc Complex ◽  
Ferric Sulphate ◽  
Sulphide Ores ◽  
Copper Zinc

Menshikovite Pd3Ni2As3 and associated minerals of sulphide ores within the Eastern flank of the Oktyabrsky deposit (Norilsk ore field)

2020 ◽  
pp. 22-29
Author(s):  
E. M. Spiridonov ◽  
S. N. Belyakov ◽  
N. N. Korotayeva ◽  
K. V. Egorov ◽  
Yu. A. Ivanova ◽  
...  
Keyword(s):  
Noble Metals ◽  
Precious Metals ◽  
Theoretical Data ◽  
Silicate Matrix ◽  
Average Composition ◽  
Eastern Flank ◽  
Sulphide Ores ◽  
Increased Activity ◽  
Low Activity ◽  
Talnakh Deposit

Significant amount of menshikovite (rare palladium and nickel arsenide) Pd3Ni2As3 was found on the Eastern flank of the Oktyabrsky deposit (Norilsk ore field), near the contact of solid and impregnation sulfide Co-Ni-Cu ores among magnetite-plagioclase-fassaite skarns. Sulfide material of both ores consists of chalcopyrite, pentlandite, pyrrhotite and cubanite aggregates, which are the products of subsolidus transformations of high-temperature solid solutions Iss3, Iss4 and subordinate Mss; with interpositions of later Se-galenite. Menshikovite in association with mertieite-II, silver-gold (fineness 756–706), golden-electrum (fineness 694–672), kotulskite, moncheite, rare altaite, hessite, naldrettite and melonite forms small (up to 30 microns) metasomatic growths on the contact of silicate matrix and magmatogenic sulfide aggregates. The average composition of menshikovite is close to theoretical data: (Pd2,98Ru0,03)3,01(Ni1,89Fe0,-08Co0,01)1,98 (As2,94Se0,04Bi0,02Sn0,01)3,01. Sperrylite metacrystals cut the borders of menshikovite accretions as well as other minerals of precious metals and contain “corroded” inclusions. This association of minerals of noble metals has arisen under the increased activity of As, Te, Sb, Bi and low activity of Sn in fluids. Menshikovite is typical for Pd-rich ores of the Oktyabrsky Deposit, while mayakite PdNiAs (another palladium and nickel arsenide) is relatively widely developed in ores of the Talnakh Deposit (Mayak mine and partly Komsomolsky mine) and the Norilsk-I. Perhaps, such a distribution of palladium-nickel arsenides is an element of mineral zonality of the Norilsk ore field.

Copper, zinc, and nickel in soil solution affected by biosolids amendment and soil management

Soil Research ◽  
2009 ◽  
Vol 47 (3) ◽  
pp. 305 ◽  
Author(s):  
Guodong Yuan
Keyword(s):  
Soil Solution ◽  
Soil Ph ◽  
Metal Ion ◽  
Organic Carbon Content ◽  
Metal Concentrations ◽  
Soil Solutions ◽  
Copper Zinc ◽  
Ion Activities ◽  
Baseline Values ◽  
Free Metal

Soil plots on a pasture were amended with biosolids spiked with copper (Cu), nickel (Ni), or zinc (Zn), resulting in maximum concentrations of 181 mg Cu, 58 mg Ni, and 296 mg Zn/kg in soil. Soil solutions from the plots were obtained by centrifugation for chemical analyses, and free metal ion activities (Cu2+, Ni2+, Zn2+) were computed from the Windermere Humic Aqueous Model (WHAM). In the 3 years after biosolids amendment, the concentrations and activities of Cu, Ni, and Zn in soil solution increased with their amounts in biosolids. Copper and Ni concentrations in soil solution were higher than their critical concentrations recently reported in the literature. While Cu in soil solution was dominated by Cu-humic complexes, Ni2+ and Zn2+ were the majority species of the metals. Liming the soil plots to increase pH from 5.5 to ~7 greatly reduced the concentrations of the trace metals, particularly Zn; Cu2+, Zn2+, and Ni2+ were decreased by orders of magnitude 2–3, 2, and 1, respectively. Metal concentrations and activities fluctuated in the next 2 years as soil pH changed slightly and then after the use of elemental sulfur to acidify soil to pH ~6.5. Eight years after application of biosolids and through soil pH adjustment by lime and sulfur, Cu2+ and Zn2+ were very close to, and Ni2+ was a few times higher than, their corresponding baseline values. Maintaining a near neutral pH thus would be the key to keeping bioavailable metal concentrations low in a soil with an organic carbon content of 23.8 g/kg.

Some observations on copper-zinc separation from complex sulphide ores

1989 ◽  
pp. 193-202 ◽  
Author(s):  
G. Labonté ◽  
M. Leroux ◽  
I. Sandoval ◽  
S.R. Rao ◽  
J.A. Finch
Keyword(s):  
Sulphide Ores ◽  
Copper Zinc

Biogeotechnology Application in the Recovery of Metals from the Wastes of Processing Plants

2015 ◽  
Vol 1130 ◽  
pp. 618-622 ◽  
Author(s):  
A.N. Seleznev ◽  
S.V. Balikov ◽  
L.Ye. Shketova ◽  
N.V. Kopylova
Keyword(s):  
Magnetic Separation ◽  
Precious Metals ◽  
Base Metals ◽  
Nickel Zinc ◽  
Copper Nickel ◽  
Metals Recovery ◽  
Metals Removal ◽  
Murmansk Region ◽  
Processing Plants ◽  
Pyrite Tailings

In order to recovery base and precious metals from processing plants tailings of Southern Ural and the Murmansk region, test work on heap biooxidation using these products was carried out. These tests involved the chemical and mineralogical analyses of the samples, the bacteria adaptation for the products tested, heap biooxidation in percolation columns, base metals (copper, nickel, zinc) precipitation and gold cyanidation. The recoveries of base metals to the solution from the products of magnetic separation of the wastes were 75% Ni and 50% Cu. This work is aimed at studying sustainability of magnetic separation products and pyrite tailings biotechnological processing. Also, gold and base metals recovery to the solution and the options of base metals removal from the solutions were studied.

Metallurgy at KGHM Polish Copper SA

2016 ◽  
Vol 682 ◽  
pp. 299-307
Author(s):  
Piotr Kwapisiński
Keyword(s):  
New Technologies ◽  
Precious Metals ◽  
High Volume ◽  
Modern Technology ◽  
Production Costs ◽  
Copper Production ◽  
Efficient Technology ◽  
Flash Smelting Furnace ◽  
Important Position ◽  
The Third World

Metallurgy of KGHM Polska Miedź S.A. is one of the world leaders in the production of copper. It is the result of high volume and quality production of copper and silver, as well as the use of modern technology direct to copper process in flash smelting furnace in HMG II. Soon this will be also the case for HMG I. The intention is to modernise, and upgrade technological processes within all the smelters to increase effectiveness, also to decrease production costs, and improve contamination of environment. In the year 2014 production of electrolytic copper increased about 2% in respect to 2013, and reached the record value 577 thousands ton. Production of silver increased 8% attaining value of 1256 ton. These perfect results were obtained through optimisation of smelting processes from one side, and rising the content of own concentrates, and foreign batches with higher content of precious metals. Production of metallic gold in 2014 was equal to 2,5t. Moreover KGHM is the third world producer of rhenium. They produce also lead technical and refined, as well as selenium, nickel sulphate, and platinum-palladium concentrate. The KGHM is also substantial producer of sulphuric acid, what is the direct effect of very efficient technology of desulphurisation of exhausts in the used metallurgical processes. The challenge for future is to increase retrieving of elements associated with copper production on every phase of the production. Due to the use of new technologies one expects also to achieve improved retrieving of other metals. Since 20% of KGHM revenue comes from silver, this is an important position in the overall balance of corporation focused mainly on copper exploitation. This is also why KGHM develops co-operations with scientific centres on the level bigger than laboratory (i.e. demo and/or pilot scales). The corporation is directly involved in research and development (subsidised national and international projects), while the value of these projects exceeds 200 mln PLN. There were created several collaborations with academic institutions targeting improvement of retrieval of energy from exploration processes, increase automation, remote control mining, and others. All of them are state of the art, and very modern technologies. KGHM must stay innovative, to preserve its market advantage. Metallurgy itself using own implemented technologies, resumes extended efforts to explore fully the richness of elements associated with the main metals.

Some Considerations on Processing Cassiterite-Bearing Polymetallic Sulphide Ores in China

2012 ◽  
Vol 496 ◽  
pp. 453-456 ◽  
Author(s):  
Si Qing Liu ◽  
Bao Liang Ge ◽  
Bao Xu Song ◽  
Wan Ping Wang
Keyword(s):  
Sustainable Development ◽  
Mineral Composition ◽  
Gravity Concentration ◽  
Comprehensive Utilization ◽  
Sulphide Ores ◽  
Copper Zinc ◽  
Autonomous Regions ◽  
Processing Techniques

Tin resources are mainly distributed in Yunnan and Guangxi autonomous regions, China. Tin ores in these areas are characterized by polymetallic constituents, including copper, zinc, lead and other associated elements that can be recovered. Due to the complex mineral composition and texture of the ores, gravity concentration, flotation as well as some combined processing techniques used in some major concentrators are reviewed and discussed. Case study shows that the comprehensive utilization of the tin ores can be realized to produce some marketable products for smelters. But much work on recovery of the fine fractions of tin shall still be done to get a good processing performance for the resource sustainable development

Characteristics of Metallurgical Waste Slag and its Heating Behavior in a Microwave Field

2016 ◽  
Vol 680 ◽  
pp. 574-579
Author(s):  
Qi Nan Li ◽  
Guo Jun Ma ◽  
Xiang Zhang ◽  
Xun Cai
Keyword(s):  
Weight Loss ◽  
Microwave Field ◽  
Converter Slag ◽  
Steel Slag ◽  
Microwave Treatment ◽  
Absorption Capacity ◽  
Metallurgical Slag ◽  
Metallurgical Waste ◽  
Crystalline Phases ◽  
Heating Behavior

Four kinds of typical metallurgical waste slags were characterized with their chemical composition, crystalline phases, microstructure and thermal behavior. The heating behavior of these slags in a microwave field were also examined. The results show that there is a high content of CaO in these waste slags. When the metallurgical waste slags were heated from room temperature to 1300°C, the weight loss of Blast Furnace (BF) slag and ladle furnace (LF) refining slag are only 2.25% and 0.9%, respectively, while the weight loss of Basic Oxygen Furnace (BOF) slag and electric arc furnace (EAF) slag are more than 5%. These metallurgical waste slags have a good absorption capacity for the microwave irradiation, the absorption capacity of microwave decreases in the order of converter slag > EAF carbon steel slag > baste furnace slag. In addition, the temperature-rising rates of the metallurgical waste slags increase with the microwave power and the quality or the particle sizes of slags. Furthermore, the crystalline phases of treated slag with microwave are similar with that of the untreated metallurgical slag. A number of internal cracks in particles of metallurgical slag can be found or extended after microwave treatment.

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