摘要
用硫酸—磷酸混合酸溶解试样,铝箔将四价钛还原至三价钛,加入硫酸铵以抑制三价钛的氧化。在草酸的存在下,以硫氰酸铵作指示剂,用硫酸铁铵标准溶液滴定,测定试样中二氧化钛的质量分数。
The sample is dissolved with sulfuric-phosphoric mixed acid,titanium （ Ⅳ ） is reduced to titanium （ Ⅲ ） by aluminum foil and addition to ammonium sulfate inhibited oxidation of titanium （ Ⅲ ）. Under the role of oxalic acid,taking ammonium thioeyanate as indicator,titanium dioxide content is determined in the sample with standard solution of ammounium ferric sulfate titration.
出处
《江西冶金》
2008年第6期22-23,32,共3页
Jiangxi Metallurgy
关键词
钒钛铁矿
硫酸-磷酸混合酸
二氧化钛
sefstromite
sulfuric-phosphoric mixed acid
titanium dioxide
