100 kg of roasted zinc ore with composition: 66% ZnO, 3% ZnS, 10% PBO, 14% Fe;Os, 1% Al;Os, 6% SIO; is reduced in a horizontal retort furnace with 45 kg coke having 90% C and 10% SIO2. In the furnace 91% of Zno is reduced to Zn 100% of Pbo is reduced to Pb 75 % of Fe,O, is reduced to Fe, 25 % of Fe,O, is reduced to Feo Neglect the vaporization of Pb and Fe and accept that they will not reoxidize. 1. Determine the weight of zinc and the percentage of zinc gained from the ore. 2. Determine the theoretical weight of C required for the reduction of Zno and the percentage of the excess C. 3. Determine the weight and the percentage of the residual material in the retort furnace after the removal of zinc vapor.

100 kg of roasted zinc ore with composition: 66% ZnO, 3% ZnS, 10% PBO, 14% Fe;Os, 1% Al;Os, 6% SIO; is reduced in a horizontal retort furnace with 45 kg coke having 90% C and 10% SIO2. In the furnace 91% of Zno is reduced to Zn 100% of Pbo is reduced to Pb 75 % of Fe,O, is reduced to Fe, 25 % of Fe,O, is reduced to Feo Neglect the vaporization of Pb and Fe and accept that they will not reoxidize. 1. Determine the weight of zinc and the percentage of zinc gained from the ore. 2. Determine the theoretical weight of C required for the reduction of Zno and the percentage of the excess C. 3. Determine the weight and the percentage of the residual material in the retort furnace after the removal of zinc vapor.

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter24: Coulometry

Section: Chapter Questions

Problem 24.9QAP

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