Technological characterization of riacho dos machados gold ore for cyanide leaching and study of the utilization of oxidising agents
This work evaluates the behavior in the cyanide leaching of primary gold ore from Riacho dos Machados, central Brazil. The parameters studied were: extraction of gold/silver in different ore sizes to determine the exposition of precious metals; rate of extraction in bottle roll tests with crushed an...
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| Veröffentlicht in: | Minerals engineering 1997-05, Vol.10 (5), p.547-550 |
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| creator | Sampaio, C.H. Petter, C.O. Kautzmann, R.M. Klein, S.L. |
| description | This work evaluates the behavior in the cyanide leaching of primary gold ore from Riacho dos Machados, central Brazil. The parameters studied were: extraction of gold/silver in different ore sizes to determine the exposition of precious metals; rate of extraction in bottle roll tests with crushed and ground ores; and the effect of addition of oxidising agents (air, oxygen and hydrogen peroxide) on gold/silver leaching. The run of mine ore contains about 7 ppm of gold and 2 ppm of silver. The gold/silver particles are of microscopic and submicroscopic sizes and 90% of the gold was extractable. The use of oxygen and hydrogen peroxide mixed with air increased the rate of gold dissolution. |
| doi_str_mv | 10.1016/S0892-6875(97)00032-0 |
| format | Article |
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The parameters studied were: extraction of gold/silver in different ore sizes to determine the exposition of precious metals; rate of extraction in bottle roll tests with crushed and ground ores; and the effect of addition of oxidising agents (air, oxygen and hydrogen peroxide) on gold/silver leaching. The run of mine ore contains about 7 ppm of gold and 2 ppm of silver. The gold/silver particles are of microscopic and submicroscopic sizes and 90% of the gold was extractable. The use of oxygen and hydrogen peroxide mixed with air increased the rate of gold dissolution.</description><subject>Applied sciences</subject><subject>cyanidation</subject><subject>Exact sciences and technology</subject><subject>extractive metallurgy</subject><subject>Gold ores</subject><subject>Hydrometallurgy</subject><subject>leaching</subject><subject>Metals. Metallurgy</subject><subject>Production of metals</subject><subject>Production of non ferrous metals. 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Process materials</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sampaio, C.H.</creatorcontrib><creatorcontrib>Petter, C.O.</creatorcontrib><creatorcontrib>Kautzmann, R.M.</creatorcontrib><creatorcontrib>Klein, S.L.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Minerals engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sampaio, C.H.</au><au>Petter, C.O.</au><au>Kautzmann, R.M.</au><au>Klein, S.L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Technological characterization of riacho dos machados gold ore for cyanide leaching and study of the utilization of oxidising agents</atitle><jtitle>Minerals engineering</jtitle><date>1997-05-01</date><risdate>1997</risdate><volume>10</volume><issue>5</issue><spage>547</spage><epage>550</epage><pages>547-550</pages><issn>0892-6875</issn><eissn>1872-9444</eissn><coden>MENGEB</coden><abstract>This work evaluates the behavior in the cyanide leaching of primary gold ore from Riacho dos Machados, central Brazil. 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| identifier | ISSN: 0892-6875 |
| ispartof | Minerals engineering, 1997-05, Vol.10 (5), p.547-550 |
| issn | 0892-6875 1872-9444 |
| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Applied sciences cyanidation Exact sciences and technology extractive metallurgy Gold ores Hydrometallurgy leaching Metals. Metallurgy Production of metals Production of non ferrous metals. Process materials |
| title | Technological characterization of riacho dos machados gold ore for cyanide leaching and study of the utilization of oxidising agents |
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