Robert Schelle

* Felka, April 11, 1851 – † Budapest, July 31, 1925 / metallurgical engineer, chemist, inventor, college professor ; ; From 1870 he studied first at the Selmecbánya Mining and Forestry Academy and then at the Vienna Technical University. After obtaining his diploma in 1874, he became an assistant teacher to István Schenek (1830–1909) in Selmecbánya. In addition to his teaching work, he also served as an inspector of the Körmöcbánya Mint. In 1881–1888, he was a chemical analyst at the Selmecbánya Mining Directorate. From 1888, he taught again at the Selmecbánya Academy: first he became the head of the metallurgy department, and then of the chemistry department from 1892. He made a great contribution to the modernization of the Academy's chemical laboratory. The most significant of his achievements are the galvanic refining of black copper and the electrolytic determination of tin (together with A. Classen), as well as the production of pure tellurium. He published his papers on the chemical analyses of various ores in Hungarian and German-language journals (The chemical analysis of the old slags of the Zsarnóca smelter, 1884, The chemical analysis of the ores of Aranyidka, 1884, The determination of antimony in grey spear ore or antimony-containing ores and mordants, 1887, etc.). He also dealt with the analysis of spring and well waters, as well as blast furnace smoke. After 1918, when the Selmecbánya academy was moved to Hungary, Róbert Schelle settled in Budapest as a pensioner and died there. ; ; His main works: ; Liquid air, 1900, ; General chemistry, 1908, ; Chemistry Institute of the Royal Hungarian Mining and Forestry College in Selmecbánya (jointly with Gergely Bencze), 1916.