Rate controls on the oxidation of heaps of pyritic material imposed by upper temperature limits on the bacterially catalysed process
: Oxidation of a fraction of the pyrite in gold‐bearing pyrite ores before leaching often increases gold recovery rates. There are a number of techniques availablc, one of which is dump oxidation. Commercial viability of such an operation requires a net oxidation of 50% or more in 1 year. This is po...
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| Veröffentlicht in: | FEMS microbiology reviews 1993, Vol.11 (1‐3), p.183-189 |
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| container_title | FEMS microbiology reviews |
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| creator | Pantelis, G. Ritchie, A.I.M. |
| description | : Oxidation of a fraction of the pyrite in gold‐bearing pyrite ores before leaching often increases gold recovery rates. There are a number of techniques availablc, one of which is dump oxidation. Commercial viability of such an operation requires a net oxidation of 50% or more in 1 year. This is possible in a dump provided convection is established quickly. Since convection requires temperatures in the dump to be well above ambient, a question arises as to the constraints that might be imposed by the upper temperature limit (Tkill) of the microorganisms which catalyse the oxidation of the pyrite. Our objective is to investigate, by way of a computer model, the importance of Tkill as a parameter effecting the oxidation rate and the fraction of pyrite oxidised after 1 year in dumps where the goal is to oxidise about 50% of the pyrite in a year or less. |
| doi_str_mv | 10.1111/j.1574-6976.1993.tb00283.x |
| format | Article |
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Psychology</subject><subject>Heap leaching</subject><subject>Industrial applications and implications. Economical aspects</subject><subject>Refractory gold ore</subject><subject>Thermophile</subject><subject>Thiobacillus</subject><issn>0168-6445</issn><issn>1574-6976</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><recordid>eNqVkE1rHCEYx6U00O2m30FK6W0muo7OmEMhhLxBQiCkZ3H1GeLirBN1yc69H7wOu-w9Xh4f_L_gD6GflNS0nItNTXnbVEK2oqZSsjqvCVl1rN5_QYvT01e0IFR0lWga_g19T2lDCOGS8wX696IzYBO2OQafcNji_AY47J3V2ZUt9PgN9JjmyzhFl53BQ7FEpz12wxgSWLye8G4cIeIMQxk67yJg7waXT4lrbQ4mP2Gjs_bTbBxjMJDSOTrrtU_w4ziX6O_tzev1ffX4fPdwffVYGdZKVsluDZ0lrSWmfLGBxkq5MqKHlnPLe2EoFCZCCtmsaN-3rAVrOsJWreZWWMGW6Pcht_S-7yBlNbhkwHu9hbBLqngpK9SK8PIgNDGkFKFXY3SDjpOiRM3g1UbNdNVMV83g1RG82hfzr2OLTkb7PuqtcemU0EhCSXEs0Z-D7MN5mD5RoG6fXmjH2H-Z35rg</recordid><startdate>1993</startdate><enddate>1993</enddate><creator>Pantelis, G.</creator><creator>Ritchie, A.I.M.</creator><general>Blackwell Publishing Ltd</general><general>Blackwell</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>7QO</scope><scope>7T7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope></search><sort><creationdate>1993</creationdate><title>Rate controls on the oxidation of heaps of pyritic material imposed by upper temperature limits on the bacterially catalysed process</title><author>Pantelis, G. ; Ritchie, A.I.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3793-98be8d07d0c2834e4d992c6fe755d5f6c1e1116969421ff737edc80327a5d6d63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>Biohydrometallurgy. Microbial leaching</topic><topic>Biological and medical sciences</topic><topic>Biotechnology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Heap leaching</topic><topic>Industrial applications and implications. 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| fulltext | fulltext |
| identifier | ISSN: 0168-6445 |
| ispartof | FEMS microbiology reviews, 1993, Vol.11 (1‐3), p.183-189 |
| issn | 0168-6445 1574-6976 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_16913157 |
| source | Oxford University Press Journals Digital Archive legacy; Wiley Online Library - AutoHoldings Journals; Oxford Journals Open Access Collection; EZB-FREE-00999 freely available EZB journals |
| subjects | Biohydrometallurgy. Microbial leaching Biological and medical sciences Biotechnology Fundamental and applied biological sciences. Psychology Heap leaching Industrial applications and implications. Economical aspects Refractory gold ore Thermophile Thiobacillus |
| title | Rate controls on the oxidation of heaps of pyritic material imposed by upper temperature limits on the bacterially catalysed process |
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