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不管用富氧顶吹、底吹、侧吹和雾化处理含钒铁水,均可得到不同品位V_2O_5的钒渣,测定钒渣中钒和钛系常规分析。过去测定其中的钛,国内外文献报道几乎全部采用分离除钒的手段,以消除钒对测定钛的干扰。作者所拟定的快速测定钒渣中钒、铁和钛的方法,尤其是不分离钒直接测定钒渣中钛的方法。虽经使用多年效果甚好,但工作要求我们寻求钒钛连测的途径。我们将测定钒后的溶液中,以还原铁粉将钛(Ⅳ)还原至钛(Ⅲ),控制钒为四价,中性红为指示剂,以重铬酸钾为滴定剂,拟定了钒渣中钒和钛的连续滴定法。本法适于含V_2O_5 10—36％的钒渣分析。方法简便、快速、条件宽容。一、分析步骤 1.钒渣中钒的测定称0.2000g试样于500mL锥形瓶中,加热溶于15—20mL磷酸中,冷却,加100mL15％硫酸,2—3g过硫酸铵,煮沸除去多余
Vanadium slag with different grade of V_2O_5 can be obtained regardless of the top-blowing, bottom-blowing, side-blown and atomized hot metal containing vanadium, and the vanadium and titanium in vanadium slag were determined by routine analysis. The past determination of titanium, domestic and foreign literature almost all the use of separation of vanadium means to eliminate vanadium on the determination of titanium interference. The method developed by the authors for the rapid determination of vanadium, iron and titanium in vanadium slag, especially for the direct determination of titanium in vanadium slag without separating vanadium. Although the effect after many years of use has been very good, but the work requires us to seek ways to test vanadium and titanium. We will determine the vanadium solution, the reduction of titanium (Ⅳ) to titanium (Ⅲ), the control of vanadium is tetravalent, neutral red as an indicator, with potassium dichromate as a titrant, prepared vanadium Continuous titration of vanadium and titanium in slag. This method is suitable for vanadium slag containing V2O5 10-36%. Method is simple, fast, conditional tolerance. First, the analysis steps 1. Determination of vanadium slag vanadium said 0.2000g sample in 500mL conical flask, dissolved in 15-20mL phosphoric acid heating, cooling, add 100mL15% sulfuric acid, 2-3g ammonium persulfate, remove the excess boiling