含钒石煤的悬浮焙烧过程：特性表征、热力学、动力学（英文）

系统地研究含钒石煤在悬浮焙烧过程中的热力学、动力学、物相转化和微观结构演变。热力学计算表明，在焙烧过程中，石煤中的碳在氧气充足的情况下燃烧并生成CO₂，石煤的主要质量损失区间为600～840℃，热分解反应速率在700℃左右达到峰值。通过Flynn-Wall-Ozawa(FWO)和Kissinger-Akahira-Sunose(KAS)方法验证，石煤的热分解反应由Ginstling-Brounshtein方程描述，表观活化能和指数前因子分别为136.09 k J/mol和12.40 s^-1。石煤中的伊利石在650℃时失去羟基，产生脱水伊利石，绢云母结构被逐渐破坏。随着温度的升高，石煤表面变得粗糙且不规则，焙烧温度为850℃时烧结严重。

Suspension roasting process of vanadium-bearing stone coal: Characterization,kinetics and thermodynamics

The thermodynamics, kinetics, phase transformation, and microstructure evolution of vanadium-bearing stone coal during suspension roasting were systematically investigated. Thermodynamic calculations showed that the carbon in the stone coal burned and produced CO₂ in sufficient oxygen during roasting. The mass loss of stone coal mainly occurred within the temperature range from 600 to 840 °C, and the thermal decomposition reaction rate increased to the peak at approximately 700 °C. Verified by the Flynn—Wall—Ozawa (FWO) and Kissinger—Akahira— Sunose (KAS) methods, the thermal decomposition reaction of stone coal was described by the Ginstling—Brounshtein equation. The apparent activation energy and pre-exponential factors were 136.09 kJ/mol and 12.40 s^—1, respectively. The illite in stone coal lost hydroxyl groups and produced dehydrated illite at 650 °C, and the structure of sericite was gradually destroyed. The surface of stone coal became rough and irregular as the temperature increased. Severe sintering occurred at the roasting temperature of 850 °C.