Bibliographic citations
Maravi, G., Hachiya, D. (2023). Modelo de mejora para el ratio de consumo de cianuro mediante las herramientas TOC, programación lineal y poka yoke en una empresa del sector minero [Trabajo de Suficiencia Profesional, Universidad Peruana de Ciencias Aplicadas (UPC)]. http://hdl.handle.net/10757/671529
Maravi, G., Hachiya, D. Modelo de mejora para el ratio de consumo de cianuro mediante las herramientas TOC, programación lineal y poka yoke en una empresa del sector minero [Trabajo de Suficiencia Profesional]. PE: Universidad Peruana de Ciencias Aplicadas (UPC); 2023. http://hdl.handle.net/10757/671529
@misc{renati/1296838,
title = "Modelo de mejora para el ratio de consumo de cianuro mediante las herramientas TOC, programación lineal y poka yoke en una empresa del sector minero",
author = "Hachiya Eguchi, David",
publisher = "Universidad Peruana de Ciencias Aplicadas (UPC)",
year = "2023"
}
The present work was developed in gold heap leaching process of a mine located in La Libertad - Perú. This work proposes an improvement model for the cyanide consumption ratio using the following tools: TOC, linear programming and poka yoke. The main reasons of the increase in cyanide consumption ratio were: no leaching stage differentiation in cyanidation heap irrigation, increase of rich solution flow due to plant demand and the manual regulation of cyanide dosage and mobilization times. The current problem has increased the cost of sodium cyanide by $776,212 for a year, it represents an additional cost of 14% in annual billing for cyanide consumption. In order to reduce this problem, we applied the Theory of Constraints TOC in order to determine the bottleneck and reduce its effects. Once the restriction in the cyanide addition process was overcome, we defined the optimal cyanide concentration according to the heap leaching stage using linear programming, in order to maximize the use of cyanide in heat with new mineral. As a last step we reduce the cyanide regulation time using a Poka Yoke system. This project was implemented in 3 months and once in operation it was able to reduce the cyanide consumption ratio from 0.22 to 0.17 kg per mineral metric ton, this means a reduction of $1,953,503 in sodium cyanide consumption per year after the project implementation. We can conclude that the combination of these process improvement tools are highly effective in reduce the cyanide consumption ratio, resulting a reductions of the operating cost.
This item is licensed under a Creative Commons License