酸溶性钛渣制取钛白的实验室研究

Laboratory Study on Producing Titanium White by Acid Dissolved Titanium Slag

鉴于酸溶性钛渣与钛精矿有较大差异,采用攀枝花钛精矿和云南钛精矿冶炼的酸溶性钛渣作为试验原料,通过实验室试验,初步确定了酸溶性钛渣的最佳酸解和水解工艺。试验结果证明,利用酸溶性钛渣制取钛白是完全可行的,相同条件下,水淬渣的酸解率高于未水淬渣。最佳水解工艺参数为:水解钛液TiO2主体浓度控制在200g/L以上;晶种加入量控制在1.3%～1.5%;水解钛液中Ti3+应控制在1～3g/L。

<Abstrcat>According to the difference of acid dissolved titanium slag and ilmenite, the laboratory experiments of preparing titanium white from acid dissolved titanium slag were carried out. The acid dissolved titanium slag came from respectively smelting Panzhihua ilmenite and Yunnan ilmenite. The process parameters of digestion and hydrolysis were defined by the laboratory experiments, and the results showed the process of producing titanium dioxide by acid dissolved titanium slag was feasible. The digestion rate of water quenching slag was higher than that of without water quenching slag under same conditions. The optimal hydrolysis process parameters are: the TiO_2 concentration in hydrolysis process should be more than 200 g/L, the add quantity of nucleator should be 1.3%～1.5%, and the Ti^(3+) concentration in hydrolysis solution should be 1～3 g/L.