chlorination processing of gold

  • Gold Chlorination Processes & Methods

    2016-8-31 · Chlorination Process for Gold. This process was based on the fact that chlorine, in the presence of moisture, converts gold into the trichloride AuCl3 , which is soluble in water and removed by washing, the gold being then precipitated by ferrous sulphate, sulphur dioxide, hydrogen sulphide, or charcoal. Coarse gold requires long contact and ...

  • Chlorination process for recovering gold values from gold ...

    A process for the recovery of precious metal values as essentially pure gold from gold alloys in the form of thin strips 0.05 to 0.25 inch thick having a gold content of up to 80% gold comprising chlorinating the strips at a temperature of 300 to 700 degrees Centigrade to form a metallic gold/metal chloride mixture and removing the metal chlorides from the gold in the mixture

  • Gold extraction by chlorination using a pyrometallurgical ...

    2021-12-29 · A novel process based on chlorination roasting was proposed to simultaneously recover gold and zinc from refractory carbonaceous gold ore by using NaCl as chlorination agent. The effects of ...

  • Gold extraction by chlorination using a pyrometallurgical ...

    2009-12-3 · recover gold from alluvial materials by an alternative process such as chlorination, preventing environmental pollution problems gen-erated by gold extraction and concentration by other conventional methods. Extractions of gold close to 99% were achieved, at a temperature of 873 K and at a reaction time of 5400 s, with no significant attack

  • The Extraction of Gold by Amalgamation and Chlorination

    2019-10-31 · amalgamation of gold with mercury and the use of the chlorination process in the extraction of gold from its ores.3 In her publication on colonial technology, Jan Todd criticised the slow acceptance of the chlorination process in Australia compared with the short time it took to utilise the process in South Africa and New Zealand, stating that ...

  • Laboratory Gold Ore Chlorination Testing Procedure

    2017-2-16 · Experience has shown how difficult it is to obtain information regarding laboratory tests in connection with the chlorination-process for the extraction of gold from its ores, and I therefore present the following method, somewhat in detail, for the benefit of those who may desire to pursue research work in this field.. The ore chosen was a partly-decomposed

  • (PDF) Extraction of Gold and Silver in the Selective ...

    2017-10-9 · To verify the reaction process and recovery efficiency of different gold-bearing bodies during the entire chlorination heat treatment process, a series of subsequent experiments and analyses were ...

  • Mathematical Model of Gold Lixiviation

    2019-2-4 · Abstract: Processing of different refractory gold ores by wet chlorination, followed by chloroauric complex (HAuCl4) separation by adsorbtion on macroporous polymers (ion exchange resin) was studied and patented by INCDMRR – ICPMRR [1,2]. This work presents the theory and practice aspects of gold lixiviation by wet chlorination.

  • Mechanism and application of the ore with chlorination ...

    2020-8-1 · By the middle of the 19th century, people tried to use chlorine gas to treat gold ore, which was the first application of chlorine gas as a gaseous chlorination agent in chlorination metallurgy. At the same time, chlorination metallurgy has been gradually expanded to treat low-grade copper ore and pyrite cinder.

  • Kinetics of gold chloride adsorption onto activated carbon ...

    1993-1-1 · The gold chlorination process has been reappraised in the last decades due to the following factors: 1) the faster dissolution rate of gold compared to other lixiviants; 2) amenability to refractory ores, such as carbonaceous ores; 3) the less environmental sensitivity; 4) improved economics, chlorine is less expense than cyanide.

  • Gold extraction by chlorination using a pyrometallurgical ...

    2009-12-3 · Technical Note Gold extraction by chlorination using a pyrometallurgical process M.W. Ojedaa,*, E. Perinob, M. del C. Ruiza a Instituto de Investigaciones en Tecnología Química (INTEQUI), Universidad Nacional de San Luis-CONICET, C.C. 290, 5700 San Luis, Argentina bÁrea de Química Analítica, Universidad Nacional de San Luis, San Luis, Argentina ...

  • The Extraction of Gold by Amalgamation and Chlorination

    2019-10-31 · amalgamation of gold with mercury and the use of the chlorination process in the extraction of gold from its ores.3 In her publication on colonial technology, Jan Todd criticised the slow acceptance of the chlorination process in Australia compared with the short time it took to utilise the process in South Africa and New Zealand, stating that ...

  • Chlorine extraction of gold - DUNN; WENDELL E.

    A process for treating a particulated gold bearing ore to recover the gold therein is disclosed. The process includes roasting the ore to remove sulfides as sulfur dioxide followed by chlorination of the ore at a temperature of about 350° C. in the presence of iron to form a mixture of volatile gold chlorides and volatile gold-iron chlorides in the chlorine off gases followed by condensing ...

  • Study of Gold Leaching Behavior in the Chlorination

    2021-1-11 · Study of Gold Leaching Behavior in the Chlorination Process from Waste Printed Circuit ACS Sustainable Chemistry & Engineering ( IF 8.198) Pub Date : 2020-12-21, DOI: 10.1021 Jianbo Wang, Mingxing Zhang, Yan Lu

  • Investigation on the recovery of gold and silver from ...

    2018-9-30 · In this work, a new chlorination roasting process for the extraction of precious metals (gold and silver) from the CT was attempted. Chlorination process, harness the feature of low boiling point and high volatile of metal chlorides. It demonstrates that CaCl 2, as a chlorination reagent, effectively break small particles and release gold . It ...

  • (PDF) Extraction of Gold and Silver in the Selective ...

    2017-10-9 · To verify the reaction process and recovery efficiency of different gold-bearing bodies during the entire chlorination heat treatment process, a series of subsequent experiments and analyses were ...

  • Chlorination - Concept - Electronic Encyclopedia of Gold ...

    2020-6-20 · Chlorination - Concept - Electronic Encyclopedia of Gold in Australia - e-Gold is a biographical, bibliographical and archival database that tells the story of gold through images, stories and multimedia interactives, connecting individual stories to wider historical themes.

  • Mathematical Model of Gold Lixiviation

    2019-2-4 · Abstract: Processing of different refractory gold ores by wet chlorination, followed by chloroauric complex (HAuCl4) separation by adsorbtion on macroporous polymers (ion exchange resin) was studied and patented by INCDMRR – ICPMRR [1,2]. This work presents the theory and practice aspects of gold lixiviation by wet chlorination.

  • Refining of Gold at the Rand Refinery - SAIMM

    2011-6-26 · African gold bullion and gold-containing by-products and is the largest establishment of its kind in the world, being responsible for approximately 62070 of the free world's production of fine gold. 10.3 Function Rand Refinery Limited is a subsidiary of

  • Precious Metals Archives — Page 3 of 5

    2021-12-31 · Laboratory Gold Ore Chlorination Testing Procedure Experience has shown how difficult it is to obtain information regarding laboratory tests in connection with the chlorination-process for the extraction of gold from its ores, and I therefore present the following method, somewhat in detail, for the benefit of those who may desire to pursue ...

  • Gold extraction by chlorination using a pyrometallurgical ...

    2009-12-3 · Technical Note Gold extraction by chlorination using a pyrometallurgical process M.W. Ojedaa,*, E. Perinob, M. del C. Ruiza a Instituto de Investigaciones en Tecnología Química (INTEQUI), Universidad Nacional de San Luis-CONICET, C.C. 290, 5700 San Luis, Argentina bÁrea de Química Analítica, Universidad Nacional de San Luis, San Luis, Argentina ...

  • The Extraction of Gold by Amalgamation and Chlorination

    2019-10-31 · amalgamation of gold with mercury and the use of the chlorination process in the extraction of gold from its ores.3 In her publication on colonial technology, Jan Todd criticised the slow acceptance of the chlorination process in Australia compared with the short time it took to utilise the process in South Africa and New Zealand, stating that ...

  • Study of Gold Leaching Behavior in the Chlorination

    2021-1-11 · Study of Gold Leaching Behavior in the Chlorination Process from Waste Printed Circuit ACS Sustainable Chemistry & Engineering ( IF 8.198) Pub Date : 2020-12-21, DOI: 10.1021 Jianbo Wang, Mingxing Zhang, Yan Lu

  • Chlorination - Concept - Electronic Encyclopedia of Gold ...

    2020-6-20 · Chlorination - Concept - Electronic Encyclopedia of Gold in Australia - e-Gold is a biographical, bibliographical and archival database that tells the story of gold through images, stories and multimedia interactives, connecting individual stories to wider historical themes.

  • History – Trilogy Refinery

    The Newbery-Vautin chlorination process was a process to extract gold from its ore using chlorination developed by James Cosmo Newbery and Claude Vautin. The process of extracting gold from ores by absorption of the precious metal in chlorine gas, from which it is reduced to a metallic state, is not a very new discovery.

  • CN1047346A - Cl-carrier chlorination process for ...

    At present, gold and silver-colored in the ore is refined in mine industry, adopts amalgam process and cyanide process usually, and mercury and prussiate are highly toxic substance, serious environment pollution, harmful HUMAN HEALTH.And having chloroazotic acid method, liquid chlorination process, the sodium-chlor bromine water method of strong lixiviate effect all to be

  • Mathematical Model of Gold Lixiviation

    2019-2-4 · Abstract: Processing of different refractory gold ores by wet chlorination, followed by chloroauric complex (HAuCl4) separation by adsorbtion on macroporous polymers (ion exchange resin) was studied and patented by INCDMRR – ICPMRR [1,2]. This work presents the theory and practice aspects of gold lixiviation by wet chlorination.

  • Gold refining – Waihi Gold

    2021-11-12 · The gold content is captured in a ‘mud bag’ around the anode. It is washed and dried, then melted and refined in a chlorination process where chlorine gas is introduced into the melting crucible. Gold is separated from the remaining base metals and is poured into granules or bars for commercial sale.

  • Refining of Gold at the Rand Refinery - SAIMM

    2011-6-26 · African gold bullion and gold-containing by-products and is the largest establishment of its kind in the world, being responsible for approximately 62070 of the free world's production of fine gold. 10.3 Function Rand Refinery Limited is a subsidiary of

  • Identifying Extraction Technology of Gold from Solid

    2019-3-7 · The demand for gold in the field of national storage, jewelry, and electronics has never been higher. However, gold extraction is not always welcomed by local residents because of the resulting environmental contamination. For more than a century, cyanide and aqua reiga were dominantly used for gold mining because of their low costs, high efficiencies, and easy