In this work, the possibility of intensifying the cementation process in stirred vessels was studied by using the perforated baffles as turbulence promoters; the cementation reaction of Cu⁺² on Zn was selected as a model. Zn was used in the form of a sheet lining the inner wall of an agitated vessel. Parameters considered are initial concentration of Cu⁺², solution temperature, impeller rotation speed, and impeller geometry. Within the present range of parameters studied, the rate of cementation was found to increase with increasing initial concentration of Cu⁺², solution temperature, and impeller rotation speed. At the same rotational speed, a flat turbine gave a higher rate of cementation than a 45° pitched turbine. The present suggested that baffles’ geometry gave superior performance in terms of mass transfer of copper cementation compared to the conventional baffle geometry. All parameters that affect the rate of cementation were correlated in the form of dimensionless equations suitable for the design and performance prediction of the agitated vessel. Potential applications of the obtained results in the field of hydrometallurgical processes and wastewater treatment were discussed.

在这项工作中，研究了使用多孔挡板作为湍流促进剂来增强搅拌容器中胶结过程的可能性。以Cu ⁺²在锌上的胶结反应为模型。Zn以片状的形式被衬在搅拌容器的内壁上。考虑的参数为Cu ^+2的初始浓度，固溶温度，叶轮转速和叶轮几何形状。在目前研究的参数范围内，发现固结速率随初始Cu ⁺²浓度的增加而增加，溶液温度和叶轮转速。在相同的转速下，扁平涡轮比45°倾斜涡轮具有更高的胶结速率。本发明人提出，与传统的挡板几何形状相比，挡板的几何形状在铜固结的传质方面具有优越的性能。所有影响胶结速率的参数都以无量纲方程的形式相互关联，这些方程适合于搅拌容器的设计和性能预测。讨论了所得结果在湿法冶金和废水处理领域的潜在应用。