Research on Mineral Formation Mechanism of Pulverized Coal Combustion Boiler Co-Generating Q-Phase Cement Clinker

Abstract:

Conduct test of 2CaO•Al₂O₃•SiO₂ transformed into Q-phase mineral with analytical reagent CaO, SiO₂, Al₂O₃ and MgO in library high-temperature furnace. And carry out experimental investigation on the mineral formation rule of co-generation Q-phase cement clinker on two-section multiphase reaction test stand simulating pulverized coal combustion boiler based on the test. It was found that: 2CaO•Al₂O₃•SiO₂ may generate Q-phase mineral with hydration activity together with appreciated amount of CaO and MgO; experimental coal sort in reasonable ratio may co-generate cement clinker with main mineral sort of 2CaO•SiO₂ and Q-phase mineral. Thermodynamic analysis on mineral formation reaction shows that, in Yanzhou coal co-generating Q-phase cement clinker, the most probably occurring is the direct synthesis reaction of 2CaO•Al₂O₃•SiO₂, followed by 2CaO•SiO₂ direct synthesis reaction and the Q-phase indirect synthesis reaction comes last according to chemical composition of clinkers.

• Periodical: Advanced Materials Research (Volumes 512-515)
• Pages: 1687-1691
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.512-515.1687
• Online since: May 2012
• Authors: You Zhou Jiao, Pan Ding, Shuang Li Du
• Keywords: Cogeneration, Mineral Formation Mechanism, Pulverized Coal Combustion Boiler, Q-Phase Cement Clinker

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