论文部分内容阅读
我们在早先的报告中曾报道了关于在硫酸介质中用锰矿或二氧化锰加热分解铬矿,随后测定铬。此外,当要测定铬矿的其他组分时,我们认为研究应用这种分解方法的可能性是值得的。然而,锰矿石和工业级的二氧化锰总含有铁和其他杂质,因此不能用于此目的。现在发现:如果采用人工制备的二氧化锰,就能测定铬矿石的所有通常组分。本文将叙述测定铬矿石中的铬、铁、二氧化硅、氧化铝、钙和镁的方法。
In our earlier report, we reported on the use of manganese ore or manganese dioxide to decompose chromium ore in a sulfuric acid medium, followed by the determination of chromium. In addition, when determining the other components of the chrome ore, we consider it worthwhile to study the possibility of applying this method of decomposition. However, manganese ore and industrial-grade manganese dioxide always contain iron and other impurities and therefore can not be used for this purpose. It has now been found that all the usual components of chromium ores can be determined using artificially prepared manganese dioxide. This article describes methods for the determination of chromium, iron, silica, alumina, calcium and magnesium in chromium ores.