【摘要】 本文对高钛渣中TiO,Ti₂O₃测定的方法进行了研究。首先采用HNO₃+H₂O₂浸取,以与M·Fe,TiC,TiN,FeS等分离,再用HCl浸取钛铁矿及残留的M·Fe,FeS及少量Fe₂O₃等,残渣中TiO,Ti₂O₃在CO₂气体保护下,用HCl+HF溶解,在溶前及溶后加Fe³⁺标液于上述体系中,以氧化低价的钛,剩余的Fe³⁺标液以TiCl₃标液滴定,根据Fe³⁺标液消耗的差值,计算出Ti²⁺,Ti³⁺,换算成TiO,Ti₂O₃的百分含量。根据岩相鉴定,所拟定的方法是可靠的,其分析周期较短,符合工艺流程规律的要求。方法的相对误差,当Ti²⁺+Ti³⁺=9.87%时为4.89%。更多还原

【Abstract】 A method for determination of TiO, Ti₂O₃ in high-Titanium slag has been proposed. The slag is treated by HNO₃-H₂O₂ to dissolve M·Fe, TiC, TiN, FeS etc, and then treated by HCl to further dissolve FeO-TiO₂, M·Fe, FeS and a little Fe₂O₃ in residue. The remainder TiO and Ti₂O₃ are dissolved by HCl-HF under the protection of CO₂. Standard Fe³⁺ solution is added into the mentioned system before and after treatment by HCl-HF to oxidize Ti²⁺ and Ti³⁺. The excess Fe³⁺ is titrated by standard TiCl₃ solution. The content of TiO and Ti₂O₃ can be calculated from the volume difference of standard TiCl₃ solution consumed by Fe³⁺. The selective dissolution effect is supported by microscope observation. The established method can satisfy the demand of technological process with short analysis period. It’s relative error is 4.89% at Ti²⁺+Ti³⁺=9.87%.更多还原