• US2283196A - Recovery of gold from telluride ores - Google ...

    US2283196A US363895A US36389540A US2283196A US 2283196 A US2283196 A US 2283196A US 363895 A US363895 A US 363895A US 36389540 A US36389540 A US 36389540A US 2283196 A US2283196 A US 2283196A Authority US United States Prior art keywords gold telluride ores recovery copper Prior art date 1940-11-01 Legal status (The legal status is an assumption and is not a legal …

  • Tellurium in gold processing | Request PDF

    In gold‐polymetallic sulfide stage, Au formed within pyrite and As‐bearing pyrite in the form of invisible gold, whereas in the gold‐telluride stage, Au occurs as visible gold, such as ...

  • Advances in Gold Ore Processing, Volume 15 - 1st Edition

    He is the author of over 60 peer-reviewed papers, editor of two books (including Advances in Gold Ore Processing, Elsevier, Amsterdam, 2005) and serves on the Editorial Board of the international journals Minerals Engineering (2002-present) and Mineral Processing …

  • Method to extract gold from telluride ores and concentrates

    For the extraction of gold from telluride ores in practice, the use of melting on the lead or copper collector. If you cannot melting telluride ore lanroot in special modes. Alternative smelting is firing tellurite and cyanide leaching of the calcine. Direct cyanide leaching of gold from telluride ores slow.

  • picture of gold ores - markosnarragansett.com

    Apr 24, 20170183;32;For gold ore placer, mineral processing, ore upgrading, etc. . 1 The rich ore ratio (the ratio between concentrate and raw ore) is far higher than other . Before delivery, we will send you the pictures of finished machines and welcome you to come. Get Price Photos of gold ores, quartz, telluride gold ore and gold

  • Gold Tellurides - TreasureNet

    Mar 31, 2015· gold telluride extraction, gold tellurides, how hot must you roast tellurides, how to get the gold out of telluride, identify calaverite ore, methods of extracting gold from kernnerite, telluride gold ore processing, telluride ore. Click on a term to search for related topics. Powered by vBadvanced CMPS v4.3.0 Contact Us ...

  • Process mineralogy of gold: Gold from telluride-bearing ores

    Petrographic and microanalytical studies of gold in gold-silver telluride deposits show that it occurs as ... Process mineralogy of gold: Gold from telluride-bearing ores. Authors; ... . Henley, “The Metallurgical Aspects of Gold Ore Mineralogy, or ‘What Every Exploration Geologist Should Know about Gold Ore …

  • Minerals | Free Full-Text | Comprehensive Recovery ...

    While extracting gold and silver from telluride-type gold deposits, it is beneficial to develop a comprehensive recovery technology for tellurium. In this paper, we report process mineralogy based on the backward processing technology and the low comprehensive utilization rate of typical telluride-type gold deposits in Xiaoqinling, China. The findings show that tellurium, gold, and silver are ...

  • SIC Industry: 1041 Gold Ores | NAICS Association

    Industry: 1041—Gold Ores Establishments primarily engaged in mining gold ores from lode deposits or in the recovery of gold from placer deposits by any method. In addition to ore dressing methods such as crushing, grinding, gravity concentration, and froth flotation, this industry includes amalgamation, cyanidation, and the production of ...

  • Establishing thE ProcEss MinEralogy of gold orEs

    2004 Establishing thE ProcEss MinEralogy of gold orEs JoE Zhou, brucE Jago and chris Martin –– sgs lakEfiEld rEsEarch liMitEd abstract From the perspective of metallurgical processing, gold ores can be classified into free-milling and refractory ores.

  • Treatment of Gold–Telluride Ores - ScienceDirect

    Treatment of telluride ore began in Vanuwtu, Fiji, in 1934 using a conventional refractory treatment circuit using roasting followed by cyanide leach of the calcine. A hydrometallurgical treatment method for the leaching of gold telluride along with the production of tellurium metal was devised at Emperor Gold Mine (Cornwall and Hisshion, 1976 ...

  • Photos of gold ores, quartz, telluride gold ore and gold ...

    The fourth class of gold ores comprises the gold-telluride group. The gold telluride ores occur with silver, or with silver, lead and antimony, or as native gold accompanied by other tellurides. These ores are often sent direct to the smelters for treatment. A fifth type is the disseminated ore type. They are often low in …

  • Gold-silver telluride ores, Colorado, U.S.A., I

    Gold-silver telluride minerals, and gold ores from Colorado . Arguably, tellurium-rich gold ores are developed in Colorado as well as anywhere on Earth, both in economic terms (tonnage of contained gold) and in light of the occurrence of diverse well-crystallized mineral species.

  • Identification of Tellurides

    It seems better therefore, when working with ores known to contain tellurides, to first make the microchemical tests for tellurium on a likely unknown, which may be followed by additional microchemical or etch tests. In any case confirmatory microchemical tests should be made to …

  • Processing technologies for gold-telluride ores | SpringerLink

    Abstract. Gold telluride ores are important gold refractory ores due to the presence of sulfides and other gangue materials. The classification and main physical properties of gold telluride ores were described, and possible treatment methods including flotation, leaching, and oxidation were reviewed.

  • Calaverite (gold telluride) | Western Australian Museum

    Calaverite (gold telluride) Photo from WA Museum Gold most commonly occurs as a native metal, but will form compounds (or minerals) with tellurium, sulfur or selenium. The gold-bearing minerals that contain tellurium are called ‘tellurides’. The Golden Mile deposit in Kalgoorlie, Western Australia, is a massive deposit containing greater ...

  • telluride gold ore extraction

    US2283196A Recovery of gold from telluride ores Google . For extracting gold from ores which have not been previously roasted and in which a major goldbearing constituent is a gold telluride, a process involving leaching the ore with a solvent containing free ammonia, an alkali or alkaline earth cyanide, and a sufiicient amount of a compound of divalent copper to give the solution a distinct ...

  • Processing technologies for gold-telluride ores

    J. Zhang et al., Processing technologies for gold-telluride ores 3 ing roast, carburizing roast, and sintering or blast roasting. The high temperature can sufficiently decompose the tellu-rides and leave behind the valuable gold residue.

  • Paper No. 187. Roasting Sulpho-Telluride Gold Ore at The ...

    One ore body in the mine contains hessite (Ag2Te) in considerable quantity, associated with gold telluride, and when ore from this stope is being treated the silver contents rise to as high as 20 dwt, but the usual amount is about 9 dwt. per ton, of which only a small proportion is extracted.

  • Establishing thE ProcEss MinEralogy of gold orEs

    during gold ore processing. Steadily rising gold prices are also stimulating the need for gold process mineralogy due to the increasing demand for and production of the yellow metal. At SGS Lakefield Research, gold process mineralogy studies are conducted routinely on all types of gold ores and mill products to assist in a wide variety

  • Metallurgy for Recovering Gold from Telluride Ore

    Gold ore associated with Telluride is hardly soluble in ordinary cyanide solutions and special treatment is necessary for its extraction. There are two methods in use in such cases. Roasting The ore is ground dry to about 30 mesh and roasted; it is then ground to a slime in water or cyanide solution, usually in grinding pans, utilizing the opportunity simultaneously to amalgamate any gold that ...

  • Gold extraction - Wikipedia

    Gold extraction refers to the processes required to extract gold from its ores.This may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore.. Gold mining from alluvium ores was once achieved by techniques associated with placer mining such as simple gold panning and sluicing, resulting in direct recovery of ...

  • Gold Ore Processing, Volume 15 - 2nd Edition

    Gold Ore Processing: Project Development and Operations, Second Edition, brings together all the technical aspects relevant to modern gold ore processing, offering a practical perspective that is vital to the successful and responsible development, operation, and closure of any gold ore processing operation.This completely updated edition features coverage of established, newly implemented ...

  • US709037A - Treatment of telluride gold ores. - Google Patents

    The processes hitherto in practice or proposed for the treatment of telluride gold ores have been open to various objections-via, costliness of working and an unsatisfactory yield of gold. The object of my present invention is to treat the said ores in an economical manner with the recovery of all or practically all the gold contained therein.

  • Mineral Processing - KCGM

    Mineral Processing Golden Mile ore is of two main types: weathered oxide ore from near the surface which is free-milling with the gold easy to extract, and sulphide ore in deeper ore bodies where the majority of the gold is locked as inclusions in tellurides and pyrites and is difficult to extract.

  • Sulfides, Selenides and Tellurides: rebellious and ...

    With a 40 percent gold content by weight, you can see it wouldn’t take much calaverite to make for some very rich ore. Sylvanite: A rich telluride of gold and silver. After calaverite, sylvanite is probably the next most important telluride ore mineral. It can assay as high as 30% gold.

  • Calaverite - Wikipedia

    Calaverite, or gold telluride, is an uncommon telluride of gold, a metallic mineral with the chemical formula AuTe 2, with approximately 3% of the gold replaced by silver.It was first discovered in Calaveras County, California in 1861, and was named for the county in 1868.. The mineral often has a metallic luster, and its color may range from a silvery white to a brassy yellow.

  • images of the mineral gold | Solution for ore mining

    Nov 01, 2012· Posts Related to images of the mineral gold pics of gold on rocks Photos of gold ores, quartz, telluride gold ore and gold specimens Examine photos of natural gold ores and telluride gold specimens mined ...

  • gold ore from ga. - BINQ Mining

    Apr 15, 2013· gold ore from ga. Posted at:April 15, 2013[ ... Childhood Lead Poisoning Associated with Gold Ore Processing. ... Photos of gold ores, quartz, telluride gold ore and gold specimens. Examine photos of natural gold ores and telluride gold specimens mined – Nevada Outback's gold.

  • Help ID Ore Specimens ( Krennerite ? Calaverite? - GOLD ...

    Jul 16, 2019· I am going crazy trying to confirm I believe these specimens are gold Calaverite or Krennerite from everything I can see but I need assistance, any one who really knows Telluride ores ore rare gold isotopes Calaverite Please please look closely at these pics Thank you !! Thank you

  • Method to extract gold from telluride ores and concentrates

    SUBSTANCE: invention relates to the field of metallurgy of non-ferrous and noble metals, in particular, to the method to extract gold from telluride ores and concentrates. Initial raw materials are treated with a solution containing 1-10 g/l of sodium sulphite, 0.1-1 mg/l of dissolved oxygen, at pH=10-11.

  • Gold in Its Raw Form | Photos of gold ores ... - Pinterest

    Photos of gold ores, quartz, telluride gold ore and gold specimens Austin, Nevada silver and gold ore, well oxidized and therefore showing few sulfide minerals Gold Prospecting Equipment for the Frugal Miner Ways to Test Gold Ore In the Field See more

  • Calaverite (gold telluride) | Western Australian Museum

    Therefore, extracting gold from telluride minerals, such as calaverite, which contains around 42% gold, has been very important in the history of Kalgoorlie mining, producing around 300 tonnes of gold. Gold-bearing tellurides were first identified in the Golden Mile deposits in May 1896, three years after the first discovery of gold.