干湿法测定硒碲混合物中金、银含量的研究  

Experimental Study on Determination of Gold and Silver in Selenium Tellurium Mixtures by Wet and Dry Methods

作　　者：张雨 Zhang Yu

机构地区：[1]山西北方铜业有限公司,山西运城043700

出　　处：《化工设计通讯》2023年第8期38-39,60,共3页Chemical Engineering Design Communications

摘　　要：采用硫酸溶解、火试金法测定含硒碲混合物中金、银含量。硒碲混合物中硒、碲含量高,火试金法测定金银时有铅扣不易形成、合粒较脆等现象,因此采用硫酸除去硒碲混合物中铜、硒、碲,火试金法测定金银含量。讨论了硫酸用量、灰化时间、配料配比对金、银回收率的影响,使用该方法金加标回收率94.0%~97.1%、银加标回收率95.0%~97.7%。The determination of gold and silver in the mixture containing selenium and tellurium by sulfuric acid dissolution and fire assay was studied.The content of selenium and tellurium in the mixture of selenium and tellurium is high,and the lead buckles are not easy to form and the aggregates are brittle in the determination of gold and silver by fire assay.Therefore,sulfuric acid is used to remove the copper,selenium and tellurium in the mixture of selenium and tellurium,and the content of gold and silver is determined by fire assay.The amount of sulfuric acid,the time of ashing and the ratio of ingredients were discussed.The recovery of gold and silver reached 96.2%~98.4%by this method.

关 键 词：硒碲混合物 硫酸溶解 火试金法 合粒 

分 类 号：O655.2[理学—分析化学]