On the contrary, it is hard to remove cobalt from cobaltsulphate solutions containing zinc ions.
相反，当硫酸钴溶液中含锌离子时，锌粉置换除钻较难进行。
2
The influence of ammonium molybdate, cobaltsulphate, ammonium bifluoride, acidity of blackening bath, blackening bath temperature and time on film quality were studied.
研究了钼酸铵、硫酸钴、氟化氢铵、黑化液酸度、黑化液温度及时间对膜质量的影响。
3
This article reports on a method of retrieving cobalt metal and tungsten carbide from hard alloy scrap by the sulphate method.