New Approaches to Using Ammonium Salts in Technological Processes of Metallurgy and Gas Purification
Zhumashev K. Serikbayeva A. Boranbayeva A. Altybayeva Z. Gusmanova A. Narembekova A. Berdikulova F. Mauleshev A. Kenbaev T.
2025John Wiley and Sons Ltd
International Journal of Chemical Engineering
2025#2025Issue 1
The paper presents a comprehensive thermodynamic and experimental analysis of the interaction of ammonium bisulfate (NH4HSO4) with oxides and sulfides of nonferrous metals (copper, nickel, and iron). Using the methods of thermogravimetric analysis (TGA), differential thermal analysis (DTA), and X-ray phase analysis (XFA), the stages of thermal decomposition of the formed compounds were studied, and intermediate and final reaction products were identified. The conditions for the formation of double salts such as (NH4)2Cu(SO4)2 are established, and the mechanism of their transformations upon heating is disclosed. The data obtained served as the basis for the substantiation of two technological directions: thermochemical opening of resistant sulfide concentrates and gas purification of coke-chemical production with the possibility of reagent regeneration. The developed solutions contribute to the implementation of environmentally friendly and resource-saving processes in the metallurgical and chemical industries. Copyright
ammonia utilization , ammonium bisulfate , double salts , gas purification , metal sulfides , thermochemical decomposition , thermogravimetric analysis
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Innovation LLP, Karaganda, Kazakhstan
Caspian University of Technology and Engineering Named After Sh. Yessenov, Aktau, Kazakhstan
Abylkas Saginov Karaganda Technical University, Karaganda, Kazakhstan
RSE National Center for Complex Processing of Mineral Raw Materials of the Republic of Kazakhstan, Almaty, Kazakhstan
KazAzot JSC, Aktau, Kazakhstan
Innovation LLP
Caspian University of Technology and Engineering Named After Sh. Yessenov
Abylkas Saginov Karaganda Technical University
RSE National Center for Complex Processing of Mineral Raw Materials of the Republic of Kazakhstan
KazAzot JSC
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