%0 Journal Article
%T Reduction of Low Grade Egyptian Manganese Ore via Hydrogen at 800¡æ - 950¡æ
%A Hala H. Abd El-Gawad
%A M. M. Ahmed
%A N. A. El-Hussiny
%A M. E. H. Shalabi
%J Open Access Library Journal
%V 1
%N 4
%P 1-11
%@ 2333-9721
%D 2014
%I Open Access Library
%R 10.4236/oalib.1100427
%X Low grade manganese ore fine was briquetted with
different amounts of molasses under different pressure was studied in this
investigation. In this study, the characterizations of raw materials were
studied by different methods of analyses such as X-ray and chemical analyses.
The results of briquetting show that as the pressing pressure load increased
both the drop damage resistance and crushing strength increased and the optimum
amount of molasses added was 2% and the pressing pressure was 216.7745 MPa. The
produced briquettes were reduced by different flow rate of hydrogen at different
temperatures, and the reduction kinetics was determined. The results indicated
that: 1) The reduction rates by hydrogen increased with increasing temperature
of the reduction; 2) Increase hydrogen flow rate at constant temperature of
reduction leads to increase rate of reduction; 3) The zero order is control
step at time 0 - 5 min and from 5 to 20 min the gaseous diffusion in case of
cylindrical products and from 20 to 60 min the reaction controlled by
nucleation and growth.
%K Low Grade Manganese Ore
%K Briquetting
%K Reduction Kinetic by Hydrogen
%U http://www.oalib.com/paper/3052614