CHEMICAL-MINERALOGICAL COMPOSITION AND PROPERTIES OF ANDESIBASALT OF THE KARAKHTAI DEPOSIT

Аннотация

INTRODUCTION Currently, the problem of finding ways to rationally In the Republic, unlike other raw materials, use natural raw materials, as well as energy saving, deposits of igneous rocks are extremely plays an important role in modern construction widespread and due to this they have reserves of and production. Saving fuel and energy resources, billions of tons, and sometimes have inexhaustible introducing energy-saving materials, improving reserves [3 - 5]. Based on this, the problem of the thermal protection of buildings and structures developing promising rocky raw materials for the is a priority that contributes to the development development of an effective composition of silicate and strengthening of the economic potential of the materials for various purposes and their innovative Republic. In the modern conditions of the economy production technologies is of current importance of Uzbekistan, there is an increase in the for the development of the real sector of the production of construction and thermal insulation Republic’s economy. In this regard, these problems materials, in particular, special attention is paid to can be solved through the development of new basalt-fiber materials based on high-quality technologies and repurposing of existing magmatic rocks that meet high technical production facilities, the development and requirements. Igneous rocks are raw materials for implementation of effective import-substituting, the industrial production of basalt fiber, and are energy- and resource-saving technologies for also suitable for producing various construction, producing basalt fiber with high physical and thermal insulation and ceramic materials [1, 2]. mechanical properties based on local raw https://www.theamericanjournals.com/index.php/tajas 12 THE USA JOURNALS THE AMERICAN JOURNAL OF APPLIED SCIENCES (ISSN – 2689-0992) VOLUME 06 ISSUE06 materials and secondary resources that will analysis was used using the accelerated method [8, provide domestic market. 9]. MATERIAL AND METHODS The mineralogical composition of the samples was determined by X-ray phase analysis [10, 11]. X-ray As the initial component for conducting phase analysis was carried out by the powder experimental studies, samples of andesibasalt from method on a Shimadzu LABX XRD-6100 X-ray the Karakhtai deposit, located in the southwestern diffractometer using CuKα radiation. Radiographs end of the Chatkal ridge in the Tashkent region, were taken with a step of 0.02, the tube current and were used. The study of the chemical and voltage mode was 30 mA, 30 kV. Identification of mineralogical composition of the sample was mineral phases and analysis of the results was carried out using classical methods of carried out using reference books, an international physicochemical, in particular spectral, chemical database [12]. analytical, and X-ray phase studies. It is known from the literature [6, 7] that when assessing the RESULTS AND DISCUSSION suitability of raw materials for the production of As a result of X-ray spectral analysis of samples basalt fiber, their chemical composition is first (Table 1) of Karakhtai andesibasalt, the presence of determined, as well as the values of the acidity 19 chemical elements was determined, of which modulus (Ma) and viscosity (Mv), which directly the main rock-forming elements are: silicon, affect its technological properties. aluminum, iron, magnesium, calcium and sodium, To determine the material composition of and other chemical elements in the rock are in andesibasalt samples, silicate rational chemical small quantities. Table 1 Results of X-ray spectral analysis of andesibasalt from the Karakhtai deposit Content of chemical elements, mass % Si Al Ca Na K Fe Mg P Ba Mn 25,0 8,0 2,0 5,0 0,6 6,0 5,0 0,02 0,01 0,1 Content of chemical elements, mass % V Ti Cu Pb Zn Ni Co Li Zr - 0,03 0,1 0,005 0,005 0,004 0,001 0,001 0,002 0,004 - The results of the study of the material composition of the studied andesibasalt are presented in Table 2. Table 2 Results of chemical analysis of the studied andesibasalt Oxide content per air-dry substance, wt.% LOI, Samples SiO Al O Fe O MgO CaO Na O K O SO wt.% 2 2 3 2 3 2 2 3 AnB-1 55.67 16.82 5.99 2.98 4.63 6.15 2.04 0.73 6.38 AnB-2 54.11 16.14 5.83 2.96 4.57 6.11 1.98 0.67 6.24 AnB . 54.89 16.48 5.91 2.97 4.60 6.13 2.01 0.70 6.31 avg Figure 1 shows the results of X-ray phase analysis of samples of Karakhtai andesibasalt initial and after https://www.theamericanjournals.com/index.php/tajas 13 THE USA JOURNALS THE AMERICAN JOURNAL OF APPLIED SCIENCES (ISSN – 2689-0992) VOLUME 06 ISSUE06 firing at a temperature of 1000 ℃. Figure 1. X-ray diffraction of Karakhtai andesibasalt: а)initial, b)fired at 1000℃ quartz (d = 0.335; 0.245; 0.213; 0.155 nm) and The X-ray diffraction pattern of the Karakhtai pyroxene (d = 3.35; 3.24; 0.255; 0.251; 0.242; 0.203 andesibasalt (Fig. 1a) shows the presence of nm). diffraction reflections corresponding to the minerals quartz (d = 0