期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 32, 期 1, 页码 333-344出版社
ELSEVIER
DOI: 10.1016/S1003-6326(22)65798
关键词
Ti-bearing blast furnace slag; oxidation; modification; leaching; synthetic rutile; pig iron
资金
- National Science and Technology Support Program of China [2015BAB18B00]
A two-stage oxidation-alkali leaching-acid leaching method was proposed for the recovery of Fe, V, and Ti in modified Ti-bearing blast furnace slag. The experimental results showed that this method can efficiently recover these metals with high extraction rates under appropriate operational conditions.
A two-stage oxidation-alkali leaching-acid leaching method was proposed to recovery Fe, V, and Ti in modified Ti-bearing blast furnace slag. The optimal experiment conditions of iron extraction were one-stage oxidation time 40 s and holding time 8 min. The recovery rate of iron was 89.93%. The optimum experiment conditions of vanadium extraction were total oxidation time of 126 s, NaOH concentration of 4.0 mol/L, leaching temperature of 95 degrees C, leaching time of 90 min, and the number of cycle was 4. The leaching rate of vanadium was 92.13%. The optimal experiment conditions of titanium extraction were HCl concentration of 4.5 mol/L, leaching temperature of 75 degrees C, and leaching time of 90 min. The TiO2 content of synthetic rutile was 98.61%.
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