Preliminary communication

Definition of apparent activation energy on DTG curves

A. K. Serikbayeva ; «Caspian State University of Technologies and Engineering named after Sh. Esenov» Republic state enterprise («CSUT&E» RSE), Aktau, Kazakhstan
K. Zhumashev ; Chemical and Metallurgical Institute named Zh.Abisheva. Karaganda, Kazakhstantau, Kazakhstan
N. Sh. Janaliyeva ; «Caspian State University of Technologies and Engineering named after Sh. Esenov» Republic state enterprise («CSUT&E» RSE), Aktau, Kazakhstan
M. Rakhimberdina ; «Caspian State University of Technologies and Engineering named after Sh. Esenov» Republic state enterprise («CSUT&E» RSE), Aktau, Kazakhstan

Abstract

The article gives the results of sulphidation oxidized copper ores and tailings with sulfur. Defined by the apparent activation energy in the conditions of heating the mixture of substances interacting with a constant speed by differential thermogravimetry (DTG). It was established that the sulfiding may occur in a kinetic mode , since the interaction is charged, in the presence of liquid and gaseous sulfur , i.e. transport of sulfur to the surface of the mineral is not a limiting process.

Keywords

copper ores; industrial waste; oxidation; sulfur; activaition energy

Hrčak ID:

153635

URI

https://hrcak.srce.hr/153635

Publication date:

1.7.2016.

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