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研究了攀枝花钛铁矿在硫酸溶液中浸取反应的动力学行为。发现在温度为１００℃～１９８℃、酸矿比为５００：１５时，铁精矿在８５％硫酸溶液中的反应速率同时受矿粒表面反应和表面产物层传质阻力影响，表观反应活化能约６８．４ ｋＪ／ｍｏｌ。浸出反应动力学方程式为 ｔ＝［０．００７６６／（２．７４×１０～７ｅ－６８４００／ＲＴ）］［１－（ｌ—ｘ）～（１／３）］｛ｌ＋（１１—０．０１６Ｔ）［ｌ＋（１—ｘ）～（１／３）－２（１—ｘ）～（２／３）］｝在酸矿比更低的非等温和准绝热实验中，该方程式可以很好地模拟反应的动力学特性。
The kinetic behavior of Panzhihua Ilmenite leaching reaction in sulfuric acid solution was studied. It is found that the reaction rate of iron ore concentrate in 85% sulfuric acid solution is affected by both the surface reaction of mineral particles and the mass transfer resistance of the surface product layer at the temperature of 100 ℃ ~ 198 ℃ and the acid-to-ore ratio of 500: 15. Apparent reaction is activated Can about 68.4 kJ / mol. The kinetic equation of leaching reaction is t = [0.00766 / (2.74 × 10-7e-68400 / RT)] [1- (l-x) ~ (1/3)] {l + (11-0.016T ) [L + (1-x) ~ (1/3) -2 (1-x) ~ (2/3)]} In the non-isothermal and quasi adiabatic experiments with lower acid-to-mineral ratios, Kinetic properties of the simulated reaction.