Process for preparing artificial rutile from crude titanium slag

• Main Authors: JIANG PENG, GAO LIKUN, CHEN CHAO, MU YU, ZHANG YUSHU, ZHANG SHAOXIANG, ZHANG XINLIANG, LIU NENGYUN
• Format: Patent
• Language: Chinese; English
• Published: 09.10.2020
• Subjects: CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; INORGANIC CHEMISTRY; METALLURGY

The invention discloses a process for preparing artificial rutile from crude titanium slag, which comprises the following steps: (1) sequentially roasting and washing the crude titanium slag to implement preliminary sodium removal, (2) leaching the washed slag with hydrochloric acid to remove sodium so as to prepare high-titanium slag, (3) extracting the hydrochloric acid leaching solution to obtain crude scandium slag, and (4) calcining the high-titanium slag to prepare the artificial rutile, roasting, washing and leaching the crude titanium slag with hydrochloric acid to obtain high titaniumslag, and calcining the high titanium slag to obtain the artificial rutile. According to the method, the high-titanium slag containing 293.21% of TiO and 1.38% of Fe can be obtained through two timesof sodium removal treatment of roasting washing and hydrochloric acid leaching, and then the artificial rutile is prepared by calcining the high-titanium slag, so that the recycling rate of the crudetitanium slag is greatly i