Tugba Deniz Tombal, Ilgin Kursun
The extraction of copper (Cu) from chalcopyrite (CuFeS2) using hydrometallurgical methods has garnered increased attention globally, particularly utilizing hydrochloric (HCl) and nitric acids (HNO3) as key lixiviants. This study aims to determine optimal leaching conditions for chalcopyrite, finding that dissolution efficiencies (DEs) of 95% for HCl and 96% for HNO3 were achievable under optimal parameters. Kinetic modeling revealed that the reaction rates were diffusion-controlled, with correlation coefficients of 0.9955 for HCl and 0.9956 for HNO3. Additionally, particle shape analysis post-leaching demonstrated a shift towards more circular morphologies, with HCl yielding less concave and more rounded particles, while HNO3 produced more angular and concave shapes. The findings indicated that optimal leaching can be achieved at a particle size of 63-75 µm, 15% solids ratio, 120 minutes of leaching time, and 250 rpm stirring speed. Variations in morphological properties were further influenced by lixiviant concentration, temperature, and type of acid used. This comprehensive analysis underscores the importance of suitable leaching conditions in enhancing chalcopyrite beneficiation efficiency.
@article{ca23305e-89f9-47df-bf4a-9db24619d2c6,
title={2025 Tombal Chalcopyrite Leaching Kinetics in HCl and HNO3},
author={Tugba Deniz Tombal and Ilgin Kursun},
year={2026},
language={en}
}TY - JOUR TI - 2025 Tombal Chalcopyrite Leaching Kinetics in HCl and HNO3 AU - Tugba Deniz Tombal AU - Ilgin Kursun PY - 2026 LA - en ER -
Huan Li, Elsayed Oraby, Jacques Eksteen
Waste printed circuit boards (WPCBs) are a complicated and valuable fraction of electric and electronic waste. The recycling of them is critical to av
The leachability tests for manufacturing scrap TV boards (STVB) have indicated the release of metals beyond the limit levels with potential problems f