eprintid: 19157 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/01/91/57 datestamp: 2024-06-04 14:11:36 lastmod: 2024-06-04 14:11:36 status_changed: 2024-06-04 14:05:02 type: article metadata_visibility: show creators_name: Chindo, S.Y. creators_name: Omoniyi, K.I. creators_name: Raji, M.A. creators_name: Bello, U. title: OPTIMIZATION OF DISSOLUTION OF COPPER FROM A NIGERIAN GOLDFIELDITE ORE FOR INDUSTRIAL UTILIZATION ispublished: pub note: cited By 1 abstract: Conventionally, copper ores are treated and processed by a high-energy intensive pyrometallurgical process. However, the huge amounts of emission of obnoxious gases demand the development of a simple, low-cost, and environmentally friendly technique. In this work, the dissolution kinetics of goldfieldite ore in ammonia-ammonium chloride was investigated. The influence of some experimental conditions were critically developed. It was affirmed that the dissolution rate increased with increasing concentration, reaction temperature, and decreasing particle diameter. At optimized experimental conditions (0.5 mol L-1 NH3-NH4Cl, 75°C, 45 μm), 88.2 copper dissolution was recorded with calculated activation energy, Ea, of 19.4 kJ mol-1. © 2023, University of Chemical Technology and Metallurgy. All Rights Reserved. date: 2023 publisher: University of Chemical Technology and Metallurgy official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85168850375&partnerID=40&md5=05590d2e637847692a78974f376632ed full_text_status: none publication: Journal of Chemical Technology and Metallurgy volume: 58 number: 6 pagerange: 1139-1145 refereed: TRUE issn: 13147471 citation: Chindo, S.Y. and Omoniyi, K.I. and Raji, M.A. and Bello, U. (2023) OPTIMIZATION OF DISSOLUTION OF COPPER FROM A NIGERIAN GOLDFIELDITE ORE FOR INDUSTRIAL UTILIZATION. Journal of Chemical Technology and Metallurgy, 58 (6). pp. 1139-1145. ISSN 13147471