Several ways of titanium white waste acid applied in calcium perphosphate production are introduced. Two-step acid addition is specially proposed.

介绍了酸在普钙生产中应的几种形式，提出了两段酸法的应思路。

Titanium dioxide is the best adhesive in enamels, the products treated by TiO2 will get more lubricous, and have better acid resistance, of course, have better appearance, and luster.

粉是瓷釉中最强的乳着，瓷釉涂搪的产品表面光滑，耐酸性强，色相、光泽好。