The potential of ultrasound as a process intensification technique in the extraction of lead from a landfilled metallurgical residues is explored. The silent or non-sonicated process makes use of acidic sodium chloride as the leachate with lead leaching in the range of 45% if a three-stage process is followed. The mixture was sonicated in a batch setup manufactured in-house. The yield obtained in silent conditions at the end of 240 min was already obtained within 30 min with ultrasound, which by itself was an improvement of 8 times. The yield of the process as a whole was improved by 19–26%. The reason for this improvement was investigated with respect to the reaction kinetics. The physical effect of ultrasound on the particle size was also studied by laser diffraction analysis. Finally, the improvement when using ultrasound in a multi-stage process was studied and it was shown that yields being obtained at the end of the 3rd stage in silent conditions is already obtained in the second stage when using ultrasound with 20% more selectivity.

探究了超声作为工艺强化技术从填埋的冶金渣中提取铅的潜力。如果采用三步法，则静默或非超声处理工艺将酸性氯化钠用作浸出液，铅的浸出率在45％范围内。将混合物以内部制造的批次设置进行超声处理。在240分钟结束时，在静音条件下获得的产量已在30分钟内通过超声获得，其本身提高了8倍。整个过程的产量提高了19–26％。从反应动力学方面研究了这种改进的原因。还通过激光衍射分析研究了超声波对粒度的物理影响。最后，