Authors : Kh.Kh. Turgumbayeva, Zh.U. Abdualiyeva, I.Zh. Lapshina, T.I. Beisekova, M.Zh. Shanbayev and I.N. Kerimbayeva
Abstract: The study shows classifies phosphoric industry waste of the Republic of Kazakhstan regarding their applications in order to identify the reserves of complex processing of waste as raw material. The results of a comparative evaluation of the physico-chemical and structural properties of the phosphoric industry waste are presented. Assessment of waste regarding such technical characteristics as alkali-lime index (Mo) and activity (SiO2/Al2O3) ratio (Ma) has performed which has shown that all tested waste possess binding properties and 2 2 3 can be used for constructional materials production. The modelling methods of composite materials compositions, based on given waste are described. The system CaO-SiO2-Al2O3 diagram is introduced as a 2 2 3 technical model for determining of the optimal composition of the main oxides, contained in the binding material. It is shown that the presence in raw components of main oxides (CaO, Al2O3, SiO2, Fe2O3) which determines 2 3 2 2 3 processes of the hydration and hardening of constructional materials is the mandatory for the modelling of composition. On the basis of generalisation of theoretical propositions of constructional materials science and research experience in the field of synthesis of chemically unfired binding systems, a method of complex processing of phosphoric industry waste to produce desired products, the constructional materials in particular is proposed.
Kh.Kh. Turgumbayeva, Zh.U. Abdualiyeva, I.Zh. Lapshina, T.I. Beisekova, M.Zh. Shanbayev and I.N. Kerimbayeva, 2016. Problems of the Utilization of Industrial Waste Produced by the Phosphoric Industry of the Republic of Kazakhstan. Research Journal of Applied Sciences, 11: 792-798.