National Center on Complex Processing of Mineral Raw Materials of the Republic of Kazakhstan

Almaty, Kazakhstan

National Center on Complex Processing of Mineral Raw Materials of the Republic of Kazakhstan

Almaty, Kazakhstan
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Yefremova S.V.,National Center on Complex Processing of Mineral Raw Materials of the Republic of Kazakhstan | Korolev Y.M.,RAS Topchiev Institute of Petrochemical Synthesis | Sukharnikov Y.I.,National Center on Complex Processing of Mineral Raw Materials of the Republic of Kazakhstan | Kablanbekov A.A.,National Center on Complex Processing of Mineral Raw Materials of the Republic of Kazakhstan | Anarbekov K.K.,National Center on Complex Processing of Mineral Raw Materials of the Republic of Kazakhstan
Solid Fuel Chemistry | Year: 2016

The results of a study of carbon materials from rice husk, lignin, and cellulose subjected to different activation processes performed by the BET method and X-ray diffraction analysis are reported. The specific surface areas and total pore volumes and the X-ray diffraction compositions and characteristics of the carbon structures of the test samples were determined. It was shown that the treatment of carbonized plant raw materials with direct steam and sodium hydroxide causes the development of a surface and an increase in the degree of order of a carbon structure, whereas the high-temperature treatment (above 1000°С) leads to a decrease in the total pore volume and the specific surface area upon reaching a maximum degree of graphitization in the carbon structure. © 2016, Allerton Press, Inc.


Makhanbetov A.B.,National Center on Complex Processing of Mineral Raw Materials of the Republic of Kazakhstan | Zharmenov A.A.,National Center on Complex Processing of Mineral Raw Materials of the Republic of Kazakhstan | Baeshov A.B.,National Center on Complex Processing of Mineral Raw Materials of the Republic of Kazakhstan
Metallurgical and Mining Industry | Year: 2015

The electrolysis bath for manganese electrolysis was made. The influence of electrolysis parameters on cathodic reduction of metal was investigated in this bath. The optimum on composition and structure diaphragm material, which allowed regulating of ions exchange in electrolytic solution, was selected for an electrolysis bath in order to normalize pH media of a catholyte and, therefore, to electrolyze for longer time. As a result of the conducted researches, data on cathodic current density, electrolyte temperature and electrolysis duration influence on current output were obtained. The electrolytic manganese was obtained from manganiferous ore of Kazakhstan deposit "Karamola" consisting of impurity and with the following composition: Mn 15.18; SaO 1.38; Ni 0.007; SiO2 64.72; Al2O3 2.37; Fe 1.24; Co 0.004; P 0.051; Zn 0.011; As <0.002; MgO 0.50. Quality of obtained manganese was evaluated by means of scanning electron microscopy (SEM) and element analysis.

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