Dissolution kinetics of lead from a lead-oxide ore that consists mainly of cerussite by trichloroacetic acid and optimization of dissolution conditions. Issue 5 (24th March 2019)

• Record Type: Journal Article
• Authors: Huang, Lingyun; Zhao, Biao; Deng, Jiushuai; Xu, Zhigao; Wu, Dandan; Tong, Xiong; Feng, Qicheng; Lai, Hao; Zhang, Xi
• Is Part Of: Separation science and technology. Volume 54:Issue 5(2019)
• Page Start: 828
• Page End: 836
• Publication Date: 2019-03-24
• Subjects: Cerussite -- lead-oxide ore -- organic acid -- trichloroacetic acid -- leaching kinetics; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2018.1520726
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: The dissolution kinetics of lead-bearing ore in trichloroacetic acid (TCA) solution were investigated. The effects of various parameters were studied to optimize the dissolution conditions and to determine the leach kinetics. An increase in leaching time, temperature, and TCA concentration, and a decrease in particle size enhanced the conversion rate. The results show that 99.26% of lead content was extracted from the samples with particle size range of –90 + 75 µm after 24 min leaching in 0.4 mol/L TCA at 800 rpm and 40°C. The following expression based on the Jander (three-dimensional) model can be described: [1–(1– x ) 1/3]2 = 22.36 × 10 −3 ( C TCA ) 1.1516 ( P ) 0.55117 ( r ) 0.92609 exp (–20899/R T ) t.