flender tübingen H2DH-25-C Helical speed reduction gearboxes H2

Flender/Flender Gear Units/Helical speed reduction gearboxes H2

al lead content in the final s1ag. physico-chemical QSL model was developed, with which the required theoretical calculations for the process could be made with sufficient accu- racy. The technical operating problems studied mainly included optimisation of the refractory masonrytoattain the longest possibleservice life,developmentofasuitable method for meas- uring the temperature of the slag in the reactor, improvement of the coal dust metering equip- ment, the operational behaviour of the radiation channel, and various material studies. The metallurgical study programme mainly covered such matters as the recovery of the prim- ary and secondary elements, utility consumption, flue dust generation, etc. Additional optimisation potentials which still exist in the process are becoming apparent and can be realised in industrial applications. The objectives were completely reached. It is now technically feasible to replace the conven- tional lead smelting process by modern, ecologically compatible and energy-saving process. The opportunities for German plant constructors to export to the world market have been improved. QSL processing plant for the People' Republic of China is currently under con- struction and additional projects in the German and international sphere are currently in the planning stages. 9 Duration: Subect: Development of low-emission technologies for the production of non-ferrous metals with particular emphasis on hydrometallurgy 0 . 0.8 - 3.1 1.8 0VQ1 Research centre: Goema Dr. Gotzelmann KG Monchhaldenstrasse 2 , 7 9 Stuttgart Government sponsorship: DM 9,2.0 Sponsorship ratio: 5 YO 1. Purpose of the project Low-emission, energy-savin and economical metallurgical processes for the production and refining of non-ferrous metays are possible, if sufficiently rich ore concentrates areavailable for smelting without hi percentage of disruptive, foreign materials. However, the extreme de- pendence of the Fexeral Re ublic of