微波烤预处理对染色体对其氧化漂水动力学的影响
Chengzong Jian1, Yankuo Zhou1, Chengfei Feng1
1School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China.
ACS omega
|January 20, 2025
概括
微波预处理显著增强 (Cr) 从矿石在氧化 (NaOH) 介质中的 (Cr) 浸出. 这种方法提高了Cr的回收率,并改善了出动力学,在水电金学中提供了有前途的应用.
科学领域:
- 金与材料科学 金与材料科学
- 化学工程是化学工程的重要组成部分.
- 矿物加工 矿物加工
背景情况:
- 矿加工通常面临高效 (Cr) 出水的挑战.
- 使用氧化 (NaOH) 和水化是已知的方法,但正在寻求改进.
- 优化泄漏率对于经济可行性和环境考虑至关重要.
研究的目的:
- 为了研究微波烤预处理对染色体漏的有效性.
- 为了确定微波烤和随后的浸的最佳条件.
- 分析增强水行为背后的动力学和机制.
主要方法:
- 微波化矿在800°C下烤10分钟. 微波化矿在800°C下烤10分钟.
- 随后在不同的条件下 (温度,氧气压力,NaOH比率,度,速度) 在NaOH-H2O介质中出.
- 预处理的染色体的动态分析和表征,以了解该机制.
主要成果:
- 微波烤预处理显著增加了Cr的漏率.
- 在优化条件下 (240°C,2.6 MPa O2, 4:1 NaOH:矿石,60 wt% NaOH) 在120分钟内达到98%的Cr出率.
- 在预处理后,Cr提取的明显激活能量从34.4kJ/mol下降到26.7kJ/mol,表明动力学更快.
结论:
- 微波烤预处理与研磨相结合,有效地增强了染色体的出.
- 这一改进归因于格子扭曲和矿物粉末精炼.
- 这种预处理方法显示出在液相氧化过程中改善酸盐出动力学的巨大潜力.
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