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关于高炉渣的低温苏打烤的动力学研究

Jie Li¹, Xuerui Cao¹, Quhan Mu¹

¹School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot, 010051, China.

|August 21, 2024

概括

这项研究优化了使用低温苏打烤方法从含丰富的高炉渣中提取玻的准备. 增加碳酸的增加将的提取从扩散控制到核控制的过程.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
金工业是金工业的一个方面.

背景情况:

从富含的高炉渣 (BRBFS) 中提取至关重要.
提高BRBFS中的水浸出率是一个关键的挑战.
低温苏打烤是一种新的提取方法.

研究的目的:

为了研究BRBFS的低温苏打烤动力学.
了解烤温度和碳酸添加对浸出率的影响.
为了识别甲基酸盐 (NaBO2) 形成的速度控制步骤.

主要方法:

研究了BRBFS低温苏打烤的动力学.
研究了烤温度 (600-700°C) 和碳酸 (Na2CO3) 添加的影响.
应用运动模型 (Avrami,Jander) 来描述NaBO2的形成.

主要成果:

NaBO2形成动力学遵循了700°C的核化 (Avrami) 模型,其理论Na2CO3添加的四倍 (激活能量:54.45kJ/mol).
在700°C时,NaBO2形成动力学从3D扩散 (Jander) 转向核和生长 (Avrami-Erofeev),最后转向核 (Avrami) 模型,Na2CO3的增加.
增加的Na2CO3添加使控制速度的步骤从扩散过渡到核化.

结论:

通过低温苏打烤,确定了从BRBFS中提取的最佳条件.
该研究阐明了NaBO2形成过程中速度控制机制的转变.
研究结果为提高工业废渣中回收效率提供了见解.

关键词:

含的无形玻璃相阶段玻璃.富含的高炉渣是一种富含的高炉渣运动学运动学低温烤苏打烤水的使用方法水的泄漏,就是水的泄漏.

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