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钛渣的酸溶性决定于它的物相结构,具有理想黑钛石固溶体结构的钛渣是理想的酸溶性钛渣,由此导出了钛渣的酸溶性与其化学组成之间的定量关系。在1800千伏安电炉中熔炼攀枝花钛铁矿（含TiO_2 45.7％）制取的钛渣（含∑TiO_2 78.2％）具有良好的酸溶性。熔炼这种酸溶性钛渣与熔炼氯化法钛渣（含∑TiO_2 82％左右）比较,电耗显著降低,产能大幅度提高。综合国内外有关研究,分析了CaO和MgO在熔炼过程中的行为。CaO是熔炼钛渣的良好助熔剂,但MgO仅在熔炼还原度较小的钛渣时才具有助熔作用。酸溶性钛渣中Ti_2O_3:TiO_2<0.3,这种钛渣具有较低的熔点、粘度和导电率,从而降低了熔炼电耗,提高了炉产能。在熔炼还原度较大的钛渣（Ti_2O_3:TiO_2>0.3）时,MgO加剧钛渣的稠化,对熔炼过程产生不良影响。因此,含高MgO的攀枝花钛铁矿较适于用来制取酸溶性钛渣。
The acid solubility of titanium slag is determined by its phase structure. Titanium slag with the ideal black titanium solid solution structure is the ideal acid-soluble titanium slag, which leads to the quantitative relationship between the acid-solubility of titanium slag and its chemical composition. Titanium slag (containing ΣTiO 2 78.2%) produced by melting Panzhihua ilmenite (containing 45.7% TiO 2) in a 1800 KVA electric furnace has good acid solubility. Smelting the acid-soluble titanium slag and the melting of titanium chloride slag (containing ΣTiO_2 82% or so) compared to significantly reduce power consumption, production capacity increased significantly. Based on the relevant research both at home and abroad, the behavior of CaO and MgO in the smelting process was analyzed. CaO is a good flux for smelting titanium slag, but MgO only has a fluxing effect when it is used to smelt titanium reductant. Acid-soluble titanium slag Ti_2O_3: TiO_2 <0.3, this titanium slag has a lower melting point, viscosity and conductivity, thus reducing the melting power consumption and improve the furnace capacity. In the smelting of titanium slag (Ti_2O_3: TiO_2> 0.3) with larger reduction degree, MgO aggravates the thickening of titanium slag and has an adverse effect on the smelting process. Therefore, high-MgO-containing ilmenite is more suitable for the preparation of acid-soluble titanium slag.