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Articles 1 - 3 of 3
Full-Text Articles in Engineering
Study Of Gold Encapsulation In Maghemite During Microwave Roasting Of Flotation Concentrate, K. Sanakulov, O.U. Fuzaylov
Study Of Gold Encapsulation In Maghemite During Microwave Roasting Of Flotation Concentrate, K. Sanakulov, O.U. Fuzaylov
Gorniy vestnik Uzbekistana
The article presents the results of a study of the encapsulation of gold in maghemite during microwave processing of refractory gold-bearing concentrate. The magnetic separation of the MW calcine showed the concentration of gold in the magnetic fraction. The results of XRD analysis confirmed the high content of maghemite in the magnetic fraction. An obvious correlation was found between gold and maghemite, since most of the gold recovered in the magnetic fraction where the maghemite content is 48.7%. Sulfuric acid leaching of the magnetic fraction in order to dissolve iron oxides made it possible to increase the rate of gold …
Microwave Treatment Of A Refractory Gold Concentrate, K. Sanakulov, Omon Fuzaylov, J.A. Kenbaeva
Microwave Treatment Of A Refractory Gold Concentrate, K. Sanakulov, Omon Fuzaylov, J.A. Kenbaeva
Gorniy vestnik Uzbekistana
The article presents the results of microwave processing of gold-containing sulfidic carbonaceous flotation concentrate, with the aim to oxidize sulfide minerals and organic carbon, in which gold is associated. The flotation concentrate was processed in a microwave oven with an output power of 700 W, so that after every 2 minutes of treatment the magnetron was turned off, the sample was mixed, then turned on. The degree of removal of sulfide sulfur was 96%. Organic carbon is removed by 76.7%. The IR spectra of the initial flotation concentrate and microwave treatment product are given, as well as the results of …
Reply To ‘Co2 Emissions From Crop Residue-Derived Biofuels’, Adam Liska, Haishun Yang, Matthew P. Pelton, Andrew E. Suyker
Reply To ‘Co2 Emissions From Crop Residue-Derived Biofuels’, Adam Liska, Haishun Yang, Matthew P. Pelton, Andrew E. Suyker
Adam Liska Papers
The soil organic carbon (SOC) model that we used was parameterized with data from arable land under normal farming conditions in North America, Europe, Africa and Asia, but the equation is insensitive to changes in tillage, soil texture and moisture. The model has reasonable accuracy, however, in predicting changes in SOC, residue remaining and CO2 emissions from initial SOC, carbon inputs from residue, and daily temperature; the shoot-to-root ratio used in the geospatial simulation was 0.29 (that is, root carbon is 29% of total aboveground carbon), which did not underestimate carbon input to soil (Supplementary Figure 2 in Ref. …