Experimental design approach regarding kinetics of high pressure leaching processes

Abstract

Kinetics of high pressure leaching of nickel latente ore "Rudjinci", Serbia was studied in this work. The following parameters: temperature, acid to ore ratio, stirring speed, and time were optimized in order to obtain the maximum efficiency. Factorial design strategy was used to determine the influence of reaction parameters on the high pressure leaching process. This approach enabled a rapid and accurate estimation of the parameters having main effects and the extent with which the parameters interact. It was found that the sulphuric acid to ore ratio and stirring speed are the most important variables in the system.

U ovom radu je proučavana kinetika luženja niklové rude Ruđinci iz Srbije pri visokim pritiscima. Parametri: temperatura, odnos kiseline i rude brzina mešanja, i vreme su optimizirani u cilju dobijanja maksimalnog iskorišćenja. Strategija dizajniranja faktora je korišćena da se odredi uticaj reakcionih parametara u procesu luženju pri visokim pritiscima. Ovaj prilaz omogućava brzu i pouzdanu procenu parametara koji imaju glavni uticaj i veličinu sa kojom oni utiču jedni na druge. Utvrđeno je da su odnos sumporne kiseline i rude i brzina mešanja najvažnije promenjive u sistemu.