REDUCTIVE DISSOLUTION OF HEMATITE IN HYDROCHLORIC-ACID MEDIUM BY SOMEINORGANIC AND ORGANIC REDUCTANTS - A COMPARATIVE-STUDY

Authors
PARIDA KM DAS NN
Citation
Km. Parida et Nn. Das, REDUCTIVE DISSOLUTION OF HEMATITE IN HYDROCHLORIC-ACID MEDIUM BY SOMEINORGANIC AND ORGANIC REDUCTANTS - A COMPARATIVE-STUDY, INDIAN JOURNAL OF ENGINEERING AND MATERIALS SCIENCES, 3(6), 1996, pp. 243-247
Citations number
17
Categorie Soggetti
Engineering
Journal title
INDIAN JOURNAL OF ENGINEERING AND MATERIALS SCIENCES → ACNP
ISSN journal
09714588
Volume
3
Issue
6
Year of publication
1996
Pages
243 - 247
Database
ISI
SICI code
0971-4588(1996)3:6<243:RDOHIH>2.0.ZU;2-0
Abstract
Dissolution behaviour of naturally occurring hematite (> 97% Fe2O3) in hydrochloric acid medium with or without the presence of reductants h as been investigated as a function of acid concentration, temperature, liquid/solid ratio, reductant concentration and particle size. FeC1(2 ) and SnCl2 are found as the best reductants among all the organic and inorganic reductants. Addition of FeCl2 or SnCl2 to the extent of 2 w t % enhances the formation of Fe2+ in the solution which in turn incre ases the percentage of dissolution and also lowers the time of dissolu tion (> 90%) from 6 to 3h.