两步法沉淀生产黄饼新工艺的研究

本文提出了一种新的两步法沉淀生产黄饼工艺，解决了传统二步法沉淀铀所产生的一系列问题。在除铁的同时可除去部分硫酸根，不仅固液分离容易，而且还有效地利用了铁沉淀过程中所产生的硫酸，此外还使溶液中铀浓度提高。新工艺投资省、操作简单、消耗低，它比用离子交换法及溶剂萃取法提纯并最终制取黄饼的工艺更具有竞争力。

A NEW TECHNIQUE FOR PRODUCTION OF YELLOW CAKE WITH DOUBLE PRECIPITATION

This paper presents a new technique for production of yellow cake with double precipitation, thus solving a series of problems for precipitating uranium with traditional double precipitation. The new technique can not only remove ferric ions and sulfate radicals but also make solid-liquid separation easy, utilize effectively the sulfuric acid produced in ferric ions precipitation process, and increase uranium concentration of leaching Iiquor. To take it as producing yellow cake will save investment,simplify operation,and cut down the consumption of raw materials and energies. It is more competitive than ion-exchange or solvent extraction in the process of extracting-purifying and preparing yellow cake.