Optimization of Spent Cathode Carbon Purification Process under Ultrasonic Action Using Taguchi Method,Industrial & Engineering Chemistry Research

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Optimization of Spent Cathode Carbon Purification Process under Ultrasonic Action Using Taguchi Method
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-05-24 , DOI: 10.1021/acs.iecr.7b05351
Jie Yuan ₁ , Jin Xiao _{1,

2} , Zhongliang Tian ₁ , Kai Yang ₁ , Zhen Yao ₁

Affiliation

Optimum condition in caustic leaching test of spent cathode carbon (SCC) from aluminum electrolysis was investigated. The primary and secondary relationship of experimental factors was determined by Taguchi method, under traditional mechanical agitation and ultrasonic, respectively. Initial alkali concentration had significant influence both in ultrasonic-assisted and mechanical agitation leaching processes, and the effect was second only to that of ultrasonic power. Optimal parameters were temperature of 60 °C, leaching time of 50 min, liquid–solid ratio of 10 mL/g, initial alkali concentration of 1 mol/L, particle size of −100 mesh, and ultrasonic power of 400 W. Purity of carbon powder obtained from treatment of spent cathode carbon at optimum conditions was 94.39%. Wastewater was reused after treated. It can be concluded that SCC purification conditions were optimized by synergistic effect of orthogonal and single-factor trails. Ultrasonic plays a notable effect in SCC caustic leaching process.

中文翻译：

Taguchi法优化超声波作用下的废阴极碳提纯工艺

研究了铝电解废阴极碳苛性浸出试验的最佳条件。在传统的机械搅拌和超声作用下，分别通过田口法确定了实验因素的主要和次要关系。初始碱浓度在超声辅助和机械搅拌浸出过程中均具有显着影响，其影响仅次于超声功率。最佳参数是温度为60°C，浸出时间为50分钟，液固比为10 mL / g，初始碱浓度为1 mol / L，粒径为-100目，超声功率为400W。在最佳条件下处理废阴极碳得到的碳粉为94.39％。废水经过处理后可以再利用。可以得出结论，SCC纯化条件是通过正交和单因素试验的协同效应优化的。超声波在SCC苛性浸出过程中起着显着的作用。

更新日期：2018-05-25

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