Continuous Bioleaching of Chalcopyritic Concentrate at High Pulp Density

Lotfalian M.; Ranjbar M.; Fazaelipoor M. H.Schaffie M.Manafi Z.

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Continuous Bioleaching of Chalcopyritic Concentrate at High Pulp Density

机译：Continuous Bioleaching of Chalcopyritic Concentrate at High Pulp Density

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The main objective of the present study was to investigate the continuous bioleaching of chalcopyrite concentrate at a high pulp density by moderate thermophilic microorganisms. Using a flotation concentrate containing 46 chalcopyrite and 23 pyrite, bioleaching tests were carried out at a high pulp density (15) and temperature of 47 degrees C using a setup consisting of three continuous stirred tank bioreactors in series. A two-level full factorial design of experiments was used to assess the effects of residence time, particle size and acidity of the leaching solution on the copper recovery. From the results of these tests, we concluded that under the best process conditions (d(80) = 30 mu m, T = 47 degrees C, and acidity of 130kg/ton) more than 54 of copper was extracted from the concentrate after 7days. Also, the concentration of copper in the final solution was higher than 20g/L.

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《Geomicrobiology journal》 |2015年第5期|42-49|共8页
作者
Lotfalian M.; Ranjbar M.; Fazaelipoor M. H.Schaffie M.Manafi Z.;
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作者单位

Shahid Bahonar Univ Kerman, Dept Min Engn, Kerman, Iran;

Shahid Bahonar Univ Kerman, Dept Chem Engn, Kerman, Iran;

Ctr Res & Dev, Hydromet Res Unit, Rafsanjan, Iran;

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正文语种英语
中图分类其他应用微生物学;
关键词
continuous bioleaching; high pulp density; moderate thermophiles; chalcopyrite;

Continuous Bioleaching of Chalcopyritic Concentrate at High Pulp Density

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