• Vanadium removal from LD converter slag using

    Cited by: 27
  • Vanadium removal from LD converter slag using

    Vanadium removal from LD converter slag using bacteria and fungi. ... At present bioleaching is used essentially for the recovery of copper, uranium and gold, and the main techniques employed are ...

  • Removal of phosphorus from LD slag using

    Request PDF Removal of phosphorus from LD slag using Heterotrophic bacteria Linz-Donawitz (LD) slag is a byproduct of the steelmaking industry and contains ~30% Ca, 20% Fe, 5% Mg and 1.4% P.

  • Acid Leaching of Cu and Zn from a Smelter Slag with a ...

    This study was undertaken to determine the leaching of Cu and Zn from a smelter slag in acidic, sulfate-rich solutions with, and without, mesophilic Fe-and S-oxidizing bacteria. Cu in the slag was mostly distributed in fayalite, Fe-deficient Cu-sulfides and metallic Cu, and Zn was associated with fayalite, magnetite and glassy silicates. The test culture was enriched from acid mine water using ...

  • Studies on the leaching behaviour of heterotrophic ...

    SEM images were made of the leached slag. In contrast to the control experiment , considerable erosion was observed on the surface of the siliceous particles after microbial treatment .As a result of the metallurgical process, fine cracks up to 2 μm wide already existed on the surface of the particles of slag taken from the dump .During microbial leaching, the cracks were widened up to around ...

  • Effects of pH, pulp density and particle size on ...

    Based on the morphological characteristics of the slag and the metal solubilization characteristics (Fig. 1, Fig. 3, 4), metal solubilization from the slag in the bioleaching process using the indigenous bacteria was an integration of the chemical and biochemical processes, and might result from the comprehensive action of both electrochemical ...

  • Chemical and bacterial leaching of metals from a

    The acid consumption of slag varied between 412 and 886 g H 2 SO 4 at pH 2.0 and 1.0, respectively. Cu and Zn were partially solubilized from smelter slag using microorganisms and acidic leach solutions. The chemical leaching was deemed insignificant when compared to the results with the bioleaching approach.

  • Gold Ore Processing Machinery Without Using Mercury

    These bacteria can use wood ... cyanide-free bioalyzed leaching of gold and ... gold from slag using bacteria – gold from slag using bacteria description : met and mat trans abstracts b: february 1997 – tms the anodic dissolution of gold was studied in the absence of oxidants ... the role of microorganisms in gold processing and recovery ...

  • Solid phase changes in chemically and biologically

    For this study, a sample of copper smelter slag was leached under acidic, sulfate-rich conditions in the presence and absence of acidophilic bacteria. The yields for metal leaching reached 34–44% Cu, 13–14% Zn and 13–14% Co depending on the initial pH ( Kaksonen et al., 2016 ).

  • Treasure from trash: how mining waste can be mined

    It may even be possible to retrieve almost all of the cobalt by using bacterial oxidation. This process was initially developed to release gold from pyritic rocks, and is regarded as a greener ...

  • Extracting valuable metals from waste incineration

    In collaboration with researchers from the University of Tübingen, scientists from the Tübingen-based biotechnology company Novis GmbH have now evaluated a biological leaching method that can be used to recycle valuable resources from incineration slag using bacteria. Funded by the Baden-Württemberg Ministry of the Environment, Climate Protection and the Energy Sector, the experts from ...

  • Gold Ore Processing Machinery Without Using Mercury

    These bacteria can use wood ... cyanide-free bioalyzed leaching of gold and ... gold from slag using bacteria – gold from slag using bacteria description : met and mat trans abstracts b: february 1997 – tms the anodic dissolution of gold was studied in the absence of oxidants ... the role of microorganisms in gold processing and recovery ...

  • Utilization of Linz–Donawitz slag from steel industry

    The Linz–Donawitz (LD) slag is an industrial waste generated in Linz–Donawitz process of steel making. It is not gaining importance in construction industry because of its volume instability, and presence of excessive phosphorous and sulphur content. Suitable accelerated ageing and masking of harmful materials can improve the engineering properties of LD slag.

  • Follow-up: Interview with Thomas Helle on new

    Some time ago, thanks to BIOPRO Baden-Württemberg, the biotechnology company Novis GmbH met Prof. Dr. Andreas Kappler, a renowned geomicrobiologist at the University of Tübingen.The two partners went on to test bioleaching methods for their ability to recover metals from slag using bacteria. In an interview with Dr. Thomas Helle, CEO of Novis GmbH, Dr. Ursula Göttert, on behalf of BIOPRO ...

  • Corrosion Science and Protetion Technology

    Shervedani R K, Pourbeyram S. Zirconium immobilized on gold-mercaptopropionic acid self-assembled monolayer for trace determination of phosphate in blood serum by using CV, EIS, and OSWV[J]. Biosens. Bioelectron., 2009, 24(7): 2199 [20]

  • Bioleaching of copper- and zinc-bearing ore using ...

    Guo Z, Zhang L, Cheng Y, Xiao X, Pan F, Jiang K (2010) Effects of pH, pulp density and particle size on solubilization of metals from a Pb/Zn smelting slag using indigenous moderate thermophilic bacteria. Hydrometallurgy 104(1):25–31 CrossRef Google Scholar

  • Sulfate-Reducing Bacteria as an Effective Tool for ...

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  • Gold Tailings: Hazards and Opportunities INN

    BacTech uses a bioleaching process called BACOX, which involves using naturally-occurring bacteria to extract precious and base metals – such as gold – from ores and concentrates. By putting ...

  • THE EXTRACTIVE METALLURGY OF GOLD IN SOUTH AFRICA

    2011-5-29  S8 GOLD 100: Proceedings of the International Conference on Gold (1986) Volume 1: Gold Mining Technology Edited by H. Wagner and R.P. King Volume 2: Extractive Metallurgy of Gold Edited by e.E. Fivaz and R.P. King Volume 3: Industrial Uses of Gold Edited by G. Gafner and R.P. King S9 APCOM 87: Proceedings of the Twentieth International

  • Smelting and Roasting Ores to recover gold, silver and ...

    2014-6-26  Smelting and Roasting Gold and Silver sulfide Ores to recover values: Nevada Outback Gems. ... Don’t submerge the ore, just keep it wetted down and moist. In this kind of environment, the natural bacteria will break down the sulfides and convert them, using the oxygen in the air, to sulfates. It's slow and may take months to complete, and you ...

  • gold slag uses – Grinding Mill China

    Gold Slag Exporters Search here 40 gold slag selling leads from 19 gold slag exporters at EC21 Choose quality gold slag exporters now. » Learn More. Gold Refinery Slag_sand Making Plant. what is gold slag scrap ore Grinding Mill China. Refining Gold ...

  • MICROORGANISMS ASSISTED DISSOLUTION OF

    2017-6-9  Figure 2: a) Zn recovery from the smelter slag using 3 strains mixes (pulp density 1%); b) bacillus spp use in the mixed matte-slag product shows the highest Co dissolution Conclusions Bacteria isolated from gold mining aqueous solutions were used for the dissolution of metal values from smelter slag and from matte – slag products.

  • This bacterium gets paid in gold: Harvesting solar

    2020-4-9  Bacteria photosensitized by intracellular gold nanoclusters for solar fuel production. Nature Nanotechnology , 2018; 13 (10): 900 DOI: 10.1038/s41565-018-0267-z Cite This Page :

  • Microbial recovery of metals from solids FEMS ...

    Solids from waste incineration such as slag and ash are considered ‘artificial ores ... Subjecting refractory gold ore to microbial treatment prior to conventional chemical extraction can substantially increase recovery by promoting biological transformation of the minerals the gold is ... The extraction of metals from ores using bacteria.

  • How gold is made - history, used, parts, procedure ...

    Gold, recognizable by its yellowish cast, is one of the oldest metals used by humans. As far back as the Neolithic period, humans have collected gold from stream beds, and the actual mining of gold can be traced as far back as 3500 B.C. , when early Egyptians (the Sumerian culture of Mesopotamia) used mined gold to craft elaborate jewelry, religious artifacts, and utensils such as goblets.

  • THE EXTRACTIVE METALLURGY OF GOLD IN SOUTH AFRICA

    2011-5-29  S8 GOLD 100: Proceedings of the International Conference on Gold (1986) Volume 1: Gold Mining Technology Edited by H. Wagner and R.P. King Volume 2: Extractive Metallurgy of Gold Edited by e.E. Fivaz and R.P. King Volume 3: Industrial Uses of Gold Edited by G. Gafner and R.P. King S9 APCOM 87: Proceedings of the Twentieth International

  • Bioleaching: metal solubilization by microorganisms

    Bioleaching is a simple and effective technology for metal extraction from low-grade ores and mineral concentrates. Metal recovery from sulfide minerals is based on the activity of chemolithotrophic bacteria, mainly Thiobacillus ferrooxidans and T. thiooxidans, which convert insoluble metal sulfides into soluble metal sulfates. Non-sulfide ores ...

  • Smelting and Roasting Ores to recover gold, silver and ...

    2014-6-26  Smelting and Roasting Gold and Silver sulfide Ores to recover values: Nevada Outback Gems. ... Don’t submerge the ore, just keep it wetted down and moist. In this kind of environment, the natural bacteria will break down the sulfides and convert them, using the oxygen in the air, to sulfates. It's slow and may take months to complete, and you ...

  • RSC Publishing Home – Chemical Science Journals,

    This platform provides access to journals, books and databases from RSC Publishing, linking over 1 million chemical science articles and chapters. You can access the latest research of interest using the custom eAlerts, RSS feeds and blogs or you can explore content using the quick and advanced searches. Discover the highest quality integrated scientific research today - search faster ...

  • Construction and Building Materials - Journal - Elsevier

    2020-7-7  CiteScore: 7.4 ℹ CiteScore: 2019: 7.4 CiteScore measures the average citations received per peer-reviewed document published in this title. CiteScore values are based on citation counts in a range of four years (e.g. 2016-2019) to peer-reviewed documents (articles, reviews, conference papers, data papers and book chapters) published in the same four calendar years, divided by the number of ...

  • gold slag uses – Grinding Mill China

    Gold Slag Exporters Search here 40 gold slag selling leads from 19 gold slag exporters at EC21 Choose quality gold slag exporters now. » Learn More. Gold Refinery Slag_sand Making Plant. what is gold slag scrap ore Grinding Mill China. Refining Gold ...

  • This bacterium gets paid in gold: Harvesting solar

    2020-4-9  Bacteria photosensitized by intracellular gold nanoclusters for solar fuel production. Nature Nanotechnology , 2018; 13 (10): 900 DOI: 10.1038/s41565-018-0267-z Cite This Page :

  • Bioleaching: metal solubilization by microorganisms

    Abstract. Bioleaching is a simple and effective technology for metal extraction from low-grade ores and mineral concentrates. Metal recovery from sulfide minerals is based on the activity of chemolithotrophic bacteria, mainly Thiobacillus ferrooxidans and T. thiooxidans, which convert insoluble metal sulfides into soluble metal sulfates.Non-sulfide ores and minerals can be treated by ...

  • Question - Moon Gold Space Forums

    2020-5-26  The Moon has no ground water and no bacteria that we know of. Therefore, no gold veins. Still, as we process iron, aluminum and silicon we will get by-products. Things like gold, platinum, silver, tin, copper and so forth are all there, and the miners can accumulate these materials over time.

  • Construction and Building Materials, 化学 • 材料, - X-MOL

    This work investigates the thermal energy storage performance of concrete using a phase change material (PCM)/SiC-based composite aggregate made with paraffin wax, silicon carbide, and slag

  • RECOVERY OF METALS USING BIOMETALLURGY

    2013-4-9  Bacteria can live in extreme environmental conditions. They can bring about a wide variety of metal transformations such as sorption, reduction, oxidation, methylation and sulphidation. Bacteria interact not only with well-known metals such as iron, copper, silver and gold, but also with a wide range of rare earth metals. This paper

  • Gold Extraction Recovery Processes

    2020-6-25  Gold recovery with sluices can vary depending on several factors. Fine gold losses can be minimized by cleaning up more frequently, reducing the speed of the slurry flow to around 0.50 to 0.80 m/s., and decreasing the feed size by performing a previous screening.

  • GCSE CHEMISTRY - Extraction of Copper - Thermal ...

    2017-3-27  Some bacteria can live by using the energy of the bond between sulfur and copper. This separates the metal from the ore and is called bioleaching. It has the advantage that it is very energy efficient typically using only 30% to 50 % of the traditional method. It has the disadvantage that it is very slow. Phytomining.

  • Construction and Building Materials - Journal - Elsevier

    2020-7-7  CiteScore: 7.4 ℹ CiteScore: 2019: 7.4 CiteScore measures the average citations received per peer-reviewed document published in this title. CiteScore values are based on citation counts in a range of four years (e.g. 2016-2019) to peer-reviewed documents (articles, reviews, conference papers, data papers and book chapters) published in the same four calendar years, divided by the number of ...

  • X-MOL科学知识平台

    X-MOL科学知识平台,顶级期刊论文图文内容每日更新,海内外课题组信息,行业新闻文摘,化学类网址导航,化学软件和数据 ...