公开(公告)号:CN101613094公开(公告)日:2009.12.30该方法包括在萃余酸输送泵上加安装变频调节器,保证萃余酸的输送量为恒定量;将萃余酸与普通原料磷酸配合,使配合酸中氧化物含量低于3%;再在配合酸中加入表 (发布) 日期: 2009.12.30 The method comprises installing a frequency conversion regulator on a pumphead of a raffinate to ensure that the delivery volume of the raffinate is a constant amount; adding the raffinate to the common raw material Phosphate with the acid so that the oxide content of less than 3%; then add acid in the table