gained by hydrometallurgical leaching processes, mainly by heap leaching with sulfuric acid and subsequent solvent extraction (SX) and electro winning (EW) treatment. Typical ore heaps in heap leaching are 4 - 12 m high and have a base area of several thousand square meters and are made up of 100,000 - 500,000 t of ore.
Originally, heap leaching was practiced 500 years ago. Georgius Agricola published a book De Re Metallica in 1557 and reported that the heap leaching process was finished in a 40-day cycle [1]. Since the middle of the 16th century, heap leaching was practiced in Hungary for copper extraction.
B.A.Sc (Metallurgy) Universidad Nacional de San Agustin, 2001 A THESIS SUBMITTED IN PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE ... May 2013 Abrahan Barriga Vilca, 2013. ii Abstract Heap leaching is a metal extraction process from low grade ores where crushed ore is stacked on an impermeable pad and ...
parameters that influence heap leaching efficiency such as heap tem-perature or leaching reagent concentration which both impact the dissolution kinetics (Bartlett, 1997; Petersen, 2016). Ghorbani et al. (2011) also point out heap permeability as a key factor of heap leaching. If percolation of leaching solution is too slow, chemical re-
The leaching reagent (dilute sulfuric acid) is sprayed through sprinklers on top of the heap pile and allowed to trickle down through the heap, where it dissolves the copper from the ore. The resulting solution of sulfuric acid and copper sulfate is collected in a small pool.
Dixon DG (2003) Heap leach modeling–the current state of the art. In: Young C, Alfantazi A, Anderson C, James A, Dreisinger DB, Harris B (eds) Hydrometallurgy 2003, proceedings of the 5th international symposium honoring Professor Ian M. Ritchie, vol 1: leaching and solution purification.
The leaching reagent (dilute sulfuric acid) is sprayed through sprinklers on top of the heap pile and allowed to trickle down through the heap, where it dissolves the copper from the ore. The resulting solution of sulfuric acid and copper sulfate is collected in a small pool.
Nov 04, 2020 A general model for leaching of one or more solid reactants from porous ore particles. Metall Trans B. 1993;24(1):157-169. Mellado ME, Cisternas LA, G lvez ED. An analytical model approach to heap leaching. Hydrometallurgy. 2009;95(1-2):33-38. Mellado ME, Casanova MP, Cisternas LA, G lvez ED. On scalable analytical models for heap leaching.
Nov 04, 2020 A general model for leaching of one or more solid reactants from porous ore particles. Metall Trans B. 1993;24(1):157-169. Mellado ME, Cisternas LA, G lvez ED. An analytical model approach to heap leaching. Hydrometallurgy. 2009;95(1-2):33-38. Mellado ME, Casanova MP, Cisternas LA, G lvez ED. On scalable analytical models for heap leaching.
DE-6 (2/88) 1 1 ABSTRACT To develop a fundamental understanding of cyanide heap leaching of low-grade gold ores, with significant copper mineralization, two sets of column leach tests were operated under two different leaching solutions. In one set, four 1.5 m tall column tests were
Feb 04, 2019 metodologia de trabajo plan minero creaci n modelo plantas y construcci n pilas de lixiviaci n en metsim simulaci n y an lisis de datos optimizaci n “heap leaching” 4. plan minero en metsim • creaci n del plan minero en metsim • el plan minero incorpora: work index , leyes del mineral, humedad mineral, perfil granulom trico. 5.
Jun 20, 2018 EL PROBLEMA DE LA LIXIVIACION EN PILAS (HEAP LEACHING) ... Las interacciones entre los montones, el almacenamiento de la soluci n y la planta de …
ubicaci n de las instalaciones de procesamiento, (por ejemplo plantas de beneficio) y los lugares para el dep sito de desechos tales como los desmontes y relaves. La ubicaci n de estos ... La lixiviaci n en pilas [heap leaching] es ampliamente usada en la industria del oro, y la lixiviaci n en botadero [dump leaching…
minerals Article Leaching of Primary Copper Sulfide Ore in Chloride-Ferrous Media Karina E. Salinas 1, Osvaldo Herreros 2 and Cynthia M. Torres 3,* 1 Departamento de Ingenier a Qu mica y Procesos de Minerales, Universidad de Antofagasta, Antofagasta 1240000, Chile; [email protected]
of heap leaching, this involves irrigation with water or recirculated solutions at the top and the ... recirculadas en la parte superior y el l quido obtenido es llevado a una planta de extracci n de yodo, donde el yodato es transformado a yodo met lico y subsecuentemente a pozas de
Apr 01, 2007 By Allan J. Breitenbach and Mark E. Smith Introduction. Raincoat liner (RCL) terminology is used in the mining heap leach industry in reference to a temporary exposed geomembrane cover (EGC) that minimizes rain stormwater infiltration into the ore heap fill and diverts cover surface storm runoff to the natural drainages (see Thiel and Smith, 2004, for a general description of heap leaching ...
Petersen J, Dixon DG. 2003b. A Modelling Study of the Dynamics of Sulfide Heap Leach Processes with a View to Improved and Novel Application. In: Lorenzen L, Bradshaw DJ, Aldrich C, Eksteen JJ, Wright M, Thom E, eds. Proceedings of the XXII International Mineral Processing Congress. SAIMM, Marshalltown, South Africa, Volume 3, 1231-1240. Google ...
The concept of de-sliming prior to leaching, which was advocated by Herkenhoff and Dean in 1987, has become of considerable significance with the use of HPGR. Finally, larger HPGR units could become a cutting-edge optimization for bio-leaching of low-grade refractory ores using a combination of finer blasting and a primary crusher followed by ...
The Piau Nickel Project is a nickel laterite heap leaching project in the North-east of Brazil. The deposit has been extensively drilled with 73% of the resource classified as Measured and with a combined Measured & Indicated JORC compliant resource of 72 million tonnes at 1.0% nickel & 0.05% cobalt with upside potential in adjacent ...
RECUPERACIN DE ORO Y PLATA DE MINERALES POR HEAP . I. Introduccin El principio bsico de la cianuracin es aquella en que las soluciones, N 1 tenemos un Flow Sheet, completo de un proceso de Heap Leaching. El flujo de alimentacin vara dentro de un rang