The concentration of waste sulfuric acid increased from 20% to 37% by using steam heat in a equipment and 80% H2SO4 which would be used to decompound ilmenite was obtained by mixing with 98% H2SO4.

• 摘要在废酸浓缩装置中利用水蒸汽加热钛白生产过程中产生的废硫酸，使其质量分数由20%25提高到37%25，与98%25的硫酸混合配制成80%25的硫酸，作为酸解钛矿的操作酸。