品名:优势急停开关3LD2054-0TK53 品牌:SIEMENS 型号:3LD2054-0TK53 General technical details: product brand name SENTRON Product designation main and EMERGENCY-OFF switches Design of the operating mechanism rotary actuator, black Type from device fixed mounting Protection class IP IP65 Number of poles...
摘要: 本发明提供了一种用菱锶矿生产锶盐的方法.该方法的特点是采用物理化学反应法,将菱锶矿粉碎后,经高温焙烧,加水浸取制得氢氧化锶中间体,将此中间体与碳酸氢铵反应制得碳酸锶;在特定pH值条件下,还可生产锶盐多品种.一般采用本方法较常规方法生产锶盐,节约化工原料,减少三废污染,产品质量高,锶收回率高....