| Title |
A Study on the kinetics of dissolution of zinc - ferrite in aqueous sulfuric acid |
| Authors |
진영술(Y . S . Jin) ; 박평주(P . C . Park) |
| Abstract |
A kinetic study on dissolution reaction of zinc-ferrite which has similar conditions to zinc-plant residue, has been made with aqueous sulfuric acid in the concentration range of 1N to 8N and over a temperature range of 50℃ to 90℃. The dissolution reaction is believed to be controlled by interface chemical reaction, and the rate is expressed by the following relation for the initial stage of the reaction in aqueous solution. 1-(1-R)^⅓=kt The activation energy for the dissolution reaction is found to be 14 ㎉/㏖. Studies with zinc-plant residue containing some other components besides zinc-ferrite slow increasing dissolution rate and its important factors were interpreted in terms of the difference of surface area, the increase of reactive site in zinc-plant residue and the Galvanic effect. |