Recovery and Enrichment of Platinum from Spent Al₂O₃ Carrier Catalysts by Matte Smelting-Acid Leaching Process

Figure 4

Pt recovery efficiency under different melting parameters. (a) Effect of trapping agent on recovery rates of Pt. (b) Effect of CaO dosage on recovery rates of Pt. (c) Effect of quartz sand on recovery rates of Pt. (d) Effect Na₂B4O₇ dosage on recovery rates of Pt.

(a)

(b)

(c)

(d)