论文部分内容阅读
光谱相板都有一定的有效期,过期时间不长的相板一般可勉强使用,但过期时间太久的相板则不能再用。现推荐一种从废相板中回收金属银的简易方法。将废相板用自来水浸泡1h以上,用手揭下涂有溴化银的乳胶层,放在搪瓷盘中,入烘箱中于100℃烘干透,再转入瓷坩埚中,放入已升温至900℃的马弗炉中,使其迅速碳化(如温度太低,乳胶熔化沸腾易沿坩埚壁溢出)。15min后,取出冷却,将碳化物捣
Photo phase plate has a certain period of validity, the expired time is not long phase plate can be barely used, but the expired time is too long phase plate can not be used. A simple method of recovering metallic silver from scrap plates is now recommended. The waste phase plate soaked with tap water for more than 1h, hand coated with silver bromide coated emulsion layer, placed in the enamel plate, into the oven dried at 100 ℃ thoroughly, and then transferred to the porcelain crucible, into the heated To 900 ℃ muffle furnace, so that the rapid carbonization (such as the temperature is too low, the latex melt easily boiling along the crucible wall overflow). After 15min, remove the cooling, the carbides pound