|About this Abstract
||Part C-1: Hydrometallurgy 2018
||Modular Reactors and Utilization in Small Scale Direct Leaching Zinc Plant Expansions
||Tuomas Hirsi, Björn Saxen, Teemu Ritasalo, Marko Lahtinen
|On-Site Speaker (Planned)
Outotec atmospheric direct leaching has so far been implemented for zinc production capacities of around 100 000 t/a. Lately, there has been growing interest in small scale direct leaching plants, producing circa 30 000 t/a of Zn. Such small leaching plants can provide extra front end capacity in existing roaster-based plants and also enable feed materials not suitable for roasting.
In small scale plants the proven OKTOP 9000 direct leaching reactors are not readily applicable, due the large size. For smaller installations a modular approach is proposed providing multiple advantages, such as reducing the construction time and amount of site work required causing less disturbance to regular plant operation with reduced cost. In this paper, we present advantages that can be achieved by using modular OKTOP-C reactors and also discuss process design when joining small scale direct leaching to existing Zinc plant. Also benefits of direct leaching expansion are presented.
||Planned: At-meeting proceedings