论文部分内容阅读
1.前言:由于选矿实收率的計算,需要对原矿及經选矿处理后的尾砂中的痕量錫进行測定。这是一項新的,也是艰巨的化驗任务。比色方法操作冗长,常用的容量法誤差較大,因为都不能滿足生产上既快又好的要求。据了解目前某些化驗室采用的方法是取少量的試样(0.4～0.6克),以过氧化鈉熔融,少量热水浸取,加过量盐酸,控制体积少于100毫升,以鋁片还原,碘液滴定。这个方法的結果
1. Foreword: Due to the calculation of dressing recovery, the determination of trace tin in tailings after ore dressing and dressing treatment is required. This is a new and daunting laboratory task. The colorimetric method is lengthy, and the commonly used volumetric methods have large errors because they can not meet the fast and good manufacturing requirements. It is understood that the method used in some laboratories is to take a small amount of sample (0.4 ~ 0.6 grams) to sodium peroxide melting, a small amount of hot water leaching, add hydrochloric acid, the control volume of less than 100 ml, with aluminum reduction , Iodine titration. The result of this method