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POSSIBILITY OF BENEFICIATION OF SILICA SAND FROM THE CROATIAN DEPOSITS USING ATTRITION SCRUBBING
Ivan Sobota
Branko Salopek
Gordan Bedeković
Anamarija Kutlić
Sažetak
To meet high quality requirements defined for specific industrial
applications, the raw sand often has to be subjected to extensive physical
and chemical processing. The possibility of achieving silica sand
concentrate of required quality depends mostly on raw sand properties,
primarily mineral impurity types and contents, and features of applied
beneficiation methods. When the impurities occur in the form of oxide
coatings on the surfaces of the single sand grains, attriton scrubbing is
applied. By reducing the proportion of oxide coatings on the grains,
the quality of sand can be improved. With the aim to determine the
possibilities of the beneficiation of silica sand from significant Croatian
deposits (“Vrtlinska”, “Štefanac” and “Španovica”) and achieve
concentrate grade complying with the requirements of domestic
industry, laboratory tests were conducted on three raw sand samples with
different SiO2 and impurity contents. Grain size distribution, chemical
and mineral composition of raw sand samples, and the possibility of
their quality improvement by applying the washing, classification and
attrition scrubbing were defined by analysis of test results.
Ključne riječi
silica sand; impurities; beneficiation; attrition scrubbing
Hrčak ID:
75114
URI
Datum izdavanja:
4.12.2011.
Posjeta: 2.608 *