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(00856)A new sustainable approach in recovering Cobalt from “hard metal” production by-products

机译:(00856)从“硬金属”生产副产品中恢复钴的新可持续方法

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The present work shows the capability of Maleic Acid solutions to tune the amount of Co in cemented carbide-based recovery powders with a Co content exceeding the threshold (10% Co)for industrial manufacturing in Hard Metal production and required by safety regulations. Maleic acid solutions react promptly and selectively in very mild conditions (0.5M, room temperature and pressure, EtOH as solvent)with Co contained in WC-Co sintered powders obtaining the [Co(Mal)2(H2O)4] compound almost quantitatively. Characterization of the resultant recovery powders (SEM-EDS, XRD)and reaction solutions (ICP-OES)after treatments confirmed the almost complete Co removal and high leaching efficiency. Recovery powders deprived of Co demonstrated proper quality to be re-employed in the production process. These results seem really promising in providing a novel, tunable and effective remediation of this hazardous industrial waste and preserve raw material depletion.
机译:本作者表明了马来酸溶液在硬质合金生产中具有超过阈值(10%CO)的碳化物基碳化物的回收粉末中的CO的能力,超过用于硬质金属生产的工业制造,并通过安全规定要求。马来酸溶液在非常温和的条件下迅速且选择性地反应(0.5M,室温和压力,EtOH作为溶剂),其中CO包含在WC-Co烧结粉末中的CO几乎定量地获得[Co(MAL)2(H 2 O)4]化合物。治疗后,所得回收粉末(SEM-EDS,XRD)和反应溶液(ICP-OES)的表征证实了几乎完全的CO除去和高浸出效率。剥夺了CO的回收粉末证明了在生产过程中重新雇用的适当质量。这些结果似乎非常有希望提供这种危险工业废物的新颖,可调和有效的修复并保持原料耗尽。

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