B. G. Balmaev, A. S. Tuzhilin, T. N. Vetchinkina, Yu. V. Zablotskaya
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引用次数: 0
Abstract
The mineral and chemical compositions of the kaolin clay from the Suvorovskoe deposit are studied by X-ray diffraction and inductively coupled plasma atomic emission spectrometry. The conditions of the thermal calcination and decomposition of the kaolin clay with sulfuric and hydrochloric acids are optimized: the calcination temperature and time are 650–700°C and 60–90 min, respectively. The degree of extraction of Al2O3 from the calcined clay to sulfuric acid solutions is 92–94%, and that to hydrochloric acid solutions is 76–78%. The influence of different flocculants on the separation of liquid and solid phases is studied. The use of polyacrylamide is shown to increase the filtration rate by a factor of 1.5–2. The coagulation properties of aluminum sulfate and hydroxochlorides, namely, oxidizability, chromaticity, and concentrations of aluminum and iron in the treated water, are studied. The tested coagulants can efficiently be applied for the treatment of drinking and sewage waters at low and high temperatures in a wide pH range of the waters to be treated.
期刊介绍：
Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.
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