Method for recovering silver

专利名称：Method for recovering silver

发明人：佐藤 亮介,鍋井 淳宏,ミルワリエフ・リナート申请号：JP2019028906申请日：20190220公开号：JP2020132957A公开日：20200831

专利附图：

摘要：Problem to be solved: to provide a method of recovering silver efficiently byseparating lead and tin from raw material containing lead, tin, bismuth, antimony and thelike with silver. SilverLeadBismuthAntimonyIn a method of recovering silver from rawmaterial containing chloride and tin chlorideThe carbonation process of carbonizing the

raw material to lead lead chloride to the lead carbonateA nitric acid leaching process byselectively leaching a lead carbonate into the carbonated raw material and selectivelyleaching the lead carbonateThe hydrochloric acid leaching process which leached bismuthand antimony by strong hydrochloric acid to the nitric acid leaching slag and solid liquidseparation.Add sulphuric acid to leachateIn addition, the silver reduction process ofreducing the silver chloride of the hydrochloric acid leaching agent by adding ironpowder to the coarse silver.Molten iron is added to the iron reduction slag by addingsoda silicate slag.Impurities such as lead and tin are separated by the oxidationpurification process in which the tin and the impurities are absorbed into the slag toseparate and recover the coarse silver to recover silver.Diagram

申请人：三菱マテリアル株式会社

地址：東京都千代田区丸の内三丁目２番３号

国籍：JP

代理人：千葉 博史

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