合质金化学法提纯的预处理

简要地论述了合质金化学法提纯预处理的方法目的．其方法分为配金法、配银法及部分配银法．介绍了配银法的工艺流程和各主要生产过程的操作方法及技术条件，并且讨论了以铜优银进行拨珠的可能性及其优缺点，最后得出结论：在有银的情况下仍以配银为好；在无银的情况下，可以铜代银进行泼珠．

The Pretreatment of Chemically Purified Alloy

The method and purpose to pretreat chernically purified alloy are briefly discussed. The method can be divided into gold adding, silver adding and part silver adding method. The technological flowsheet of the silver adding method, its operation method and technical conditions of the main procedures,the possibility and the advantages and disadvantages of melt and recovery with copper instead of silver are introduced. It is concluded that the silver adding method is advised with silver in the alloy,copper can be used instead of silver without silver in the alloy