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对川西稀土矿泥的稀土赋存形态研究和热力学分析结果表明，进行中温加碳氯化焙烧，能使矿泥中的稀土易溶于水。钒厂的废液富含Cl-，可用作氯化焙烧时的氯化剂。实验表明这种设想可行。在适当的控制条件下，能以矿泥为原料制取合格的氯化稀土产品，稀土收率达77％～78％。
The rare earths in western Sichuan rare earth deposit morphology and thermodynamic analysis results show that the temperature plus carbochlorination roasting can make the rare earth soluble in water slime. Vanadium plant waste is rich in Cl-, chlorination can be used as chlorination agent. Experiments show that this idea is feasible. Under the proper control conditions, the qualified rare earth chlorination products can be prepared from the slime, and the yield of rare earth reaches 77% -78%.