Ling-hong Guo's research while affiliated with Sichuan University and other places
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Publications (2)
Dissolution of mechanically activated Panzhihua ilmenite was conducted in 5–20% sulphuric acid solutions. With high milling intensity the milling atmosphere significantly affected the dissolution with milling under vacuum almost double the dissolution of ilmenite milled in air. This was due to formation of a lot of acid-resistant pseudorutile and l...
Dissolution of mechanically activated Panzhihua ilmenite was carried out at 100 °C with a 50% sulfuric acid solution. The particle size, specific surface area, crystallite size, lattice strain and mechano-chemical reaction of milled ilmenite were measured. The cleavage induced by energetic milling occurred more preferentially along the a-axis of il...
Citations
... In addition, the leaching reaction of ilmenite in hydrochloric acid was controlled by a diffusion-controlled shrinking core model and a surface chemical reaction with an activation energy of 42.3 kJ/mol (Baba et al., 2009). Moreover, extensive work has been performed on the dissolution kinetics of titanium from ilmenite using a sulfuric acid solution (Li et al., 2007;Liang et al., 2005;Sasikumar et al., 2004). The leaching kinetics of titanium from ilmenite in sulfuric acid solution were investigated by Liang et al. (2005), and the results revealed that the reaction process was controlled by a surface reaction and diffusion through the product layer with an activation energy of 72.1 kJ/mol. ...
... 2,6,21 Besides, numerous scholars have studied the impact of mechanical activation on the dissolution rate of ilmenite. [22][23][24][25] They mentioned that mechanical activation speeds up the rate of dissolution of ilmenite by enhancing its chemical reactiveness. In this way, acid leaching by HCl of mechanically activated ilmenite is a potential route for upgrading to synthetic rutile. ...
