100 years - Austria / II. Republic of Austria 1987 - 5 Shilling

The light metal conferences were launched in 1934 by the then Montanistische Hochschule Leoben. Originally geared to all light metals, the International Light Metals Conference has today become the largest forum in the aluminum industry. The second conference was held in Leoben in 1948, shortly after the Second World War, and was the first major international symposium in Austria after the Second World War. The following sessions were held at a rate of five to seven years. The year 1987 was also chosen for the 8th International Alloy Conference because this year is the 100th anniversary of the patents of Dr. Ing. Karl Josef Bayer, whose process for producing alumina from bauxite is still dominating the world today. It consists of breaking up bauxite under high pressure with sodium hydroxide solution and, after filtration, stirring aluminum hydrate out of the aluminate solution. The crystallized aluminum hydrate is then washed and converted by annealing in alumina (alumina). This clay is chemically pure and the most important raw material for the production of aluminum. Dr. Karl Josef Bayer was born on 4 March 1847 in Bielitz (Austria-Silesia) and died on 4 October 1904 in Rietzdorf near Cilli (southern Styria). The brand image shows a portrait of this great chemist.