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助化学平衡计算法,对冶炼过程中钛、碳及伴生元素的分配行为进行了研究,并用生产结果加以验证,计算结果与实验结果较吻合。结果表明:钛铁矿中Ti O2和Fe O含量的增加,增加了作为微量元素和用于还原Fe O和Ti O2的C量,提高了钛渣中总的Ti O2和Ti2O3的量,同时降低了用于还原Fe2O3的C量,降低了钛渣中Fe O的含量。当钛渣中Fe2O3含量由12%增加到20%时,作为微量元素C和用于还原Fe2O3的C量分别降低了0.006 mol和0.348 mol,钛渣中总的Ti O2和Ti2O3的量分别降低了8.34%和2.37%,而用于还原Fe2O3的C量增加了约0.36 mol,Fe O的质量分数增加了8.94%。其他成分对钛渣中总的Ti O2量的影响程度由大到小排序为:Si O2>Mg O>Al2O3>Ca O。对钛渣还原冶炼过程中元素分配行为的研究,可实现对工艺的更好控制、提高钛渣品位。
Assisted chemical balance calculation method, the distribution of titanium, carbon and accompanying elements in the smelting process was studied and verified with the production results, the calculated results are in good agreement with the experimental results. The results show that the increase of Ti O2 and FeO content in ilmenite increases the amount of C, which is a trace element and is used to reduce Fe O and Ti O2, increases the total amount of Ti O2 and Ti2O3 in the titanium slag, The amount of C used to reduce Fe2O3 reduces the content of FeO in the titanium slag. When the content of Fe2O3 in titanium slag increased from 12% to 20%, the amount of C as trace element C and the amount of C for reducing Fe2O3 decreased by 0.006 mol and 0.348 mol, respectively, and the total amount of Ti O2 and Ti2O3 in titanium slag decreased respectively 8.34% and 2.37%, while the amount of C used to reduce Fe2O3 increased by about 0.36 mol, the mass fraction of FeO increased by 8.94%. The influence of other components on the total amount of Ti02 in the titanium slag was ranked as follows: Si O2> MgO> Al2O3> CaO. Study on the elemental distribution of titanium slag during reduction smelting process can achieve better control of the process and improve the quality of titanium slag.