【摘要】 选用水合肼—液碱法制备单质银，还原效果与水合肼—氨水法相近，但操作环境大大改善，有利于操作人员的身体健康，提高劳动生产率。更多还原

【Abstract】 Silver is prepared by using hydrazine hydrate-liquid alkali.Although the proposed method yields nearly same result as the approach of hydrazine hydrate-aqueous ammonia,the operation surrounding is greatly improved.Consequently,the method is helpful to the health of operators and the production efficiency is raised.更多还原