Premium
The dissolution of activated titanium slag in dilute sulfuric acid
Author(s) -
Toromanoff Ivo,
Habashi Fathi
Publication year - 1985
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450630214
Subject(s) - dissolution , slag (welding) , sulfuric acid , titanium , diffusion , activation energy , materials science , metallurgy , chemical engineering , inorganic chemistry , mineralogy , chemistry , thermodynamics , physics , engineering
Finely ground titanium slag (–400 mesh) dissolves slowly in dilute H 2 SO 4 (2–10 mol/L) in the temperature range 70–110°C, but attrition ground slag dissolves much faster under similar conditions. The process is strongly dependent on the speed of agitation in the region 345–1035 rpm, and has an activation energy of 28 kJ/mole TiO 2 , thus suggesting that the dissolution is controlled by diffusion through the boundary layer.