THERMODYNAMIC ANALYSIS OF THE FORMATION OF CALCIUM BORATES IN THE ????3 ? m ?3??3 SYSTEM
Abstract
Atyrkhanova K. K., Shevko V. M., Tleuov A. S., Tleuova S. T., Ashirbaev K. A., Sopbekova A. O.
Agglomeration of phosphorite fines is carried out at a fairly high temperature (1200-1300º) with a consumption of 6-8% of coke breeze per each ton of feedstock. The resulting agglomerate is not very strong. The yield of suitable agglomerate does not exceed 50%. The purpose of this study was to find solutions to reduce the agglomeration temperature of phosphorite fines, which are more fusible compared to calcium silicates. The article presents the results of research on the thermodynamic analysis of the formation of calcium borates in the ?¡?°?¡?3 – m ?3?’?3 system. The studies were carried out by calculating ∆Gº, as well as using the second order planning method. Found that the formation of calcium borate (?¡?°?. ?’2?3) is more preferable than calcium silicate (?¡?°?• Si?2). Regardless of the temperature (1000.1100 and 1200º?¡), the dependence ∆Gº - f (β) has an extremum at β = 1. In this case (at β = 1) the reaction ?¡?°?¡?3+2?3?’?3=?¡?°?’2?4+3?2?+?¡?2 with the formation of ?¡?°?’2?4 is characterized by a lower thermodynamic probability of all other reactions. To comply with the conditions of the sintering temperature from 1000 to 1200 ° C and ∆G -250 kJ and less, the process must be carried out at β = 0.76-2.0.
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| Pubmed Style Atyrkhanova K. K., Shevko V. M., Tleuov A. S., Tleuova S. T., Ashirbaev K. A., Sopbekova A. O.. THERMODYNAMIC ANALYSIS OF THE FORMATION OF CALCIUM BORATES IN THE ????3 – m ?3??3 SYSTEM. SRP. 2020; 11(12): 1507-1513. doi:10.31838/srp.2020.12.222 Web Style Atyrkhanova K. K., Shevko V. M., Tleuov A. S., Tleuova S. T., Ashirbaev K. A., Sopbekova A. O.. THERMODYNAMIC ANALYSIS OF THE FORMATION OF CALCIUM BORATES IN THE ????3 – m ?3??3 SYSTEM. http://www.sysrevpharm.org/?mno=16592 [Access: March 29, 2021]. doi:10.31838/srp.2020.12.222 AMA (American Medical Association) Style Atyrkhanova K. K., Shevko V. M., Tleuov A. S., Tleuova S. T., Ashirbaev K. A., Sopbekova A. O.. THERMODYNAMIC ANALYSIS OF THE FORMATION OF CALCIUM BORATES IN THE ????3 – m ?3??3 SYSTEM. SRP. 2020; 11(12): 1507-1513. doi:10.31838/srp.2020.12.222 Vancouver/ICMJE Style Atyrkhanova K. K., Shevko V. M., Tleuov A. S., Tleuova S. T., Ashirbaev K. A., Sopbekova A. O.. THERMODYNAMIC ANALYSIS OF THE FORMATION OF CALCIUM BORATES IN THE ????3 – m ?3??3 SYSTEM. SRP. (2020), [cited March 29, 2021]; 11(12): 1507-1513. doi:10.31838/srp.2020.12.222 Harvard Style Atyrkhanova K. K., Shevko V. M., Tleuov A. S., Tleuova S. T., Ashirbaev K. A., Sopbekova A. O. (2020) THERMODYNAMIC ANALYSIS OF THE FORMATION OF CALCIUM BORATES IN THE ????3 – m ?3??3 SYSTEM. SRP, 11 (12), 1507-1513. doi:10.31838/srp.2020.12.222 Turabian Style Atyrkhanova K. K., Shevko V. M., Tleuov A. S., Tleuova S. T., Ashirbaev K. A., Sopbekova A. O.. 2020. THERMODYNAMIC ANALYSIS OF THE FORMATION OF CALCIUM BORATES IN THE ????3 – m ?3??3 SYSTEM. Systematic Reviews in Pharmacy, 11 (12), 1507-1513. doi:10.31838/srp.2020.12.222 Chicago Style Atyrkhanova K. K., Shevko V. M., Tleuov A. S., Tleuova S. T., Ashirbaev K. A., Sopbekova A. O.. "THERMODYNAMIC ANALYSIS OF THE FORMATION OF CALCIUM BORATES IN THE ????3 – m ?3??3 SYSTEM." Systematic Reviews in Pharmacy 11 (2020), 1507-1513. doi:10.31838/srp.2020.12.222 MLA (The Modern Language Association) Style Atyrkhanova K. K., Shevko V. M., Tleuov A. S., Tleuova S. T., Ashirbaev K. A., Sopbekova A. O.. "THERMODYNAMIC ANALYSIS OF THE FORMATION OF CALCIUM BORATES IN THE ????3 – m ?3??3 SYSTEM." Systematic Reviews in Pharmacy 11.12 (2020), 1507-1513. Print. doi:10.31838/srp.2020.12.222 APA (American Psychological Association) Style Atyrkhanova K. K., Shevko V. M., Tleuov A. S., Tleuova S. T., Ashirbaev K. A., Sopbekova A. O. (2020) THERMODYNAMIC ANALYSIS OF THE FORMATION OF CALCIUM BORATES IN THE ????3 – m ?3??3 SYSTEM. Systematic Reviews in Pharmacy, 11 (12), 1507-1513. doi:10.31838/srp.2020.12.222 |
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