Interstroyproekt, CJSC (Russia):

Bortnikov А. V., Ph. D. in Engineering Sciences, Process Engineer, bortnikov_av@npk-mt.spb.ru

Samukov А. D., Chief Project Engineer, dezintegr@mail.ru

Spiridonov P. А., Chief Specialist, spiridonov_pa@npk-mt.spb.ru
Shuloyakov А. D., Ph. D. in Engineering Sciences, Director General, interstroyproekt@mail.ru

Institute of Geology and Mineralogy, SB RAS (Russia):

Shirokikh V. A., Leading Engineer, interstroyproekt@mail.ru

Kutolin V. A., Doctor of Geology and Mineralogy, Senior Researcher, interstroyproekt@mail.ru

The paper describes the compositions of raw materials, conventionally used for mineral cotton production. These raw materials are characterized by quite high costs and short supply. However, in the territory of Russia, billions of tons of mineral ore processing waste materials have been accumulated, and these tailings storage growth continues, causing environmental pollution. Obviously, such inexpensive raw materials should be studied with respect to possible utilization as a main mix component in production of high-efficiency thermal and sound insulation material – mineral cotton. The mix in question shall comply with the main criteria of application, including acidity index (at least 1.4–2.0, depending on type of mineral cotton) and mix molten viscosity (3–10 Pa·s), providing for super-thin fiber formation by means of air blowing. The paper proposes a possible mix preparation technique for mineral cotton production from crushed granitoid and dolomite stone screenings, a certain combination of which theoretically provides for the required acidity index, low melting temperature and the required molten viscosity of mix. It was verified through the experimental testing, that 80 % granite dust and 20 % limestone mix satisfies with all criteria to the required mix.

The paper was prepared in the framework of the Government Agreement with the Ministry of Education and Science of the Russian Federation No. 14.576.21.0042, dated 16.07.2014., (UIPNI RFMEFI57614X0042.).

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