José R. Parga, Jesús V. Valdés
The Merrill-Crowe zinc-precipitation process has been applied worldwide on a large number of operations for recovering gold and silver from cyanide solutions. However, in some of the large plants this precipitate is of low quality, because copper and especially lead are precipitated along with gold and silver resulting in a higher consumption of zinc powder, fluxes in the smelting of the precipitate, formation of mate and short life for crucibles. In this research, a method is proposed to recover lead, zinc and copper cyanide ions from barren solutions, from the Merrill-Crowe process with hydroxyapatite before the filter press. This technology is based on inducing nucleated precipitation of zinc, copper and silver ions in a serpentine reactor, using sodium sulfide as the precipitant and sulfuric acid for pH control. This procedure was successfully applied at WILLIAM Mining and BACIS Mining Group in México.
@article{e368f561-b5a2-40b1-bcd1-ba2c2a9ff10a,
title={New Approach for Lead, Zinc and Copper Ions Elimination in Cyanidation Process to Improve the Quality of the Precipitate},
author={José R. Parga and Jesús V. Valdés},
year={2015},
language={es}
}TY - JOUR TI - New Approach for Lead, Zinc and Copper Ions Elimination in Cyanidation Process to Improve the Quality of the Precipitate AU - José R. Parga AU - Jesús V. Valdés PY - 2015 LA - es ER -
MBUYA MWASHI JOSUE, MUSENGA OMBA VENUS
Ce projet académique s'inscrit dans le cadre des études en métallurgie générale, visant à explorer les procédés d'extraction des métaux à partir de mi
Printed circuit boards (PCBs) from electronic gadgets at the end of their useful life period are currently being dumped in landfills or incinerated, c
Increasing volumes of waste printed circuit boards from obsolete electronic equipment posed escalating environmental risks and resource losses due to
Important advances in electrochemical engineering technology over the last three decades have fostered the development of a lternative methods to alle