开源节流　提高钛白粉回收率

To increase the rate of recovery of titanium dioxide by tapping the new resources and cutting down the expenditures

阐述回收率的概念和提高回收率的意义，如何采取开源节流的技术措施，达到提高钛白粉回收率的目的。

The concept of the rate of recovery and the meaning of increasing the rate of recovery are explained. The author emphasizes that measures must be taken to tap the new resources and cut down the expenditures so as to attain the target of increasing the rate of recovery of titanium dioxide.