Liu Xibo, Chen Zhiqiang. Study on Upgrading the Quality Grade of Ilmenite Concentrate[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(1): 16-20,63. doi: 10.7513/j.issn.1004-7638.2015.01.003
Citation:
Liu Xibo, Chen Zhiqiang. Study on Upgrading the Quality Grade of Ilmenite Concentrate[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(1): 16-20,63. doi: 10.7513/j.issn.1004-7638.2015.01.003
Liu Xibo, Chen Zhiqiang. Study on Upgrading the Quality Grade of Ilmenite Concentrate[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(1): 16-20,63. doi: 10.7513/j.issn.1004-7638.2015.01.003
Citation:
Liu Xibo, Chen Zhiqiang. Study on Upgrading the Quality Grade of Ilmenite Concentrate[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(1): 16-20,63. doi: 10.7513/j.issn.1004-7638.2015.01.003
Luoyang Ship Material Research Institute, China Shipbuilding Industry Corporation, Luoyang Sunrui Titanium Precision Casting Co., Ltd., Luoyang 471023, Henan, China
The effects of oxidation temperature on the crystal structure of ball milling activated and unactivated ilmenite concentrate as well as upgrading the quality grade of ilmenite concentrate through acid leaching were investigated by oxidation treatment and acid leaching. The results indicate that,after oxidation at 750~800 ℃,the new phases of Fe2Ti3O9,Fe2O3 and rutile TiO2 appear in the ilmenite concentrate with comparatively sufficient phase transition,and the phase transition starts at a lower temperature and the conversion rate is higher for the milling ilmenite concentrate. After annealing at 800 ℃ and acid leaching at 105 ℃ for the milling ilmenite concentrate,the content of Ca O and Mg O separately decreases to 0.089% and 0.888% respectively with 88.7% and 51.8% of removal rate,and the content of TiO2 increases from 44.12% to 53.64%,which shows a significant improvement for the quality grade of ilmenite concentrate.
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