论文部分内容阅读
在以钠还原氟钽酸钾时,在有稀释剂碱金属卤化物存在的条件下,添加MgCl_2或MgSO_4以制造含氧量低、比电容高的电解电容器用钽粉。 将K_2TaF_7100kg、NaCl50kg、MgCl_20.2kg(或MgSO_4 0.3kg)混合,在800℃下用33kg钠还原,生成的粉末经粗碎、水洗、粉碎后,得到含镁的钽粉,再用硫酸或盐酸的水溶液进行酸洗,通过添加MgCl_2或MgSO_4,使生成的MgO极容易溶解除去,
When sodium potassium fluorotitanate is reduced with sodium, MgCl 2 or MgSO 4 is added in the presence of a diluent alkali metal halide to produce tantalum powder for electrolytic capacitors having a low oxygen content and a high specific capacitance. K 2 TaF - 7100kg, NaCl 50kg, MgCl - 20.2kg (or MgSO 4 0.3kg) were mixed and calcined at 800 ℃ with 33kg sodium. The resulting powder was crushed, washed with water and pulverized to obtain tantalum powder containing magnesium, and then sulfuric acid or hydrochloric acid Aqueous solution pickling, by adding MgCl_2 or MgSO_4, the resulting MgO very easy to dissolve removed,