Journals →  Obogashchenie Rud →  2011 →  #6 →  Back

ArticleName Prospects for quartz products production from nonconventional sources of quartz raw materials
ArticleAuthor Danilevskaya L. A., Skamnitskaya L. S.

Danilevskaya L. A., Senior Researcher,; Skamnitskaya L. S., Senior Researcher,; Institute of Geology, Karelian Research Centre of RAS (Russia).


By way of example of the Eastern Hizovaara (North Karelia) deposit quartz-muscovite metasomatites, on the basis of 102 individual samples, taken from seven boreholes, the ore types geological-mineralogical characteristics and processing specifics have been studied. Quartz-muscovite metasomatites with muscovite content of at least 18 %, accounting for 70 % of total rock mass, are of a commercial interest, being represented by light-gray fine-and-medium-grained schistosity rocks with varying content of rock-forming minerals: quartz — 10–71 %; muscovite — 8–42 %; plagioclase — 1.5–28 %; kyanite — 2–13.5 %; biotite — 0.1–8 %. Small technological samples processing experiments established easy dressability with regard to muscovite. With respect to the technology, starting material after crushing is deslimed by -0.1 mm size fraction, +0.1 mm size fraction is subjected to gravity concentration (on concentration tables) by the flow sheet that includes rougher operation and two cleanings of middlings. Muscovite concentrate contains 95.6 % muscovite, recovery being 83%. A possibility of producing quartz concentrates of variable grade as fine-grain muscovite by-products has been shown under laboratory conditions on the basis of two large samples. Mineralogical-technological specific properties of quartz were studied both area-wise and depth-wise of the deposit in order to estimate a possibility of higher-grade quartz concentrates production from muscovite cycle tailings. Mineral inclusions' specialties were determined with respect to quartz morphotypes. Special features of a combined processing technology with application of gravity concentration and flotation are described. Prospects for possible use of produced quartz products are indicated: concentrate to be produced from the deposit South-East area ore, with size of 0.315–0.1 mm and impurities content of 236 ppm, may be used to produce metal silicon of special grades; concentrate from North-West area ore, with size 0.2–0.1 mm (1465 ppm impurities), complies with the requirements to raw material for production of ferrosilicon of high grades.

keywords Quartz raw material, morphotypes, mineralogical-technological specific properties, mineral inclusions, all-round utilization, gravity concentration, flotation, concentrate, muscovite, quartz

1. Danilevskaya L. A., Skamnitskaya L. S., Shchiptsov V. V. Kvartsevoye syryo Karelii (Quartz raw materials of Karelia). Petrozavodsk, KRC RAS, 2004, 226 p.
2. Shchiptsov V. V., Skamnitskaya L. S. Obogashchenie Rud, 2000, No 3, pp. 23–31.
3. Mineralno-syryevaya baza Respubliki Karelia (Mineral base of Kareliya). Petrozavodsk, 2006, Vol. 2, pp. 71–81.
4. Shchiptsov V. V., Skamnitskaya L. S., Bubnova T. P., Danilevskaya L. A., Rodionov V. S. Geologiya i poleznye iskopaemye Karelii (Geology and mineral resources of Karelia). Iss. 6. Petrozavodsk, KRC RAS, 2003, pp. 67–77.
5. Shchiptsov V. V., Scamnitskaya L. S., Savitskiy A. I. Roltekhnologicheskikh issledovaniy v reshenii ekologicheskikh problem (teoriya, praktika, perspectivy razvitiya) (Role of technological researches in the decision of environmental problems (theory, practice, development prospects)), Proc. to the Annual Meeting of the All-Russian Mineralogical Society. Moscow, 2002, pp. 192—194.
6. Kravets B. N. Spetsialnye i kombinirovannye metody obogashcheniya (Special and combined methods of mineral processing). Moscow, Nedra, 1987, pp. 101—122.
7. Kravets B. N. Izvestiya VUZov. Gornyy Zhurnal — Isv. of Universites. Mining Journal. 1995, No 8, pp. 160—168.
8. Revnivtsev V. I. Obogashcheniye polevykh shpatov i kvartsa (Beneficiation of field spars and quartz). Moscow, Nedra, 1970, 129 p.
9. Jung L. High purity natural quartz. Quartz Tehnology, Inc. New Jersey, 1995. 550 p.

Language of full-text russian
Full content Buy