B3-KH10-B Eg a Shaft seals see page onwards For detail Bevel-helical gearbox B3

Flender/Flender Gear Units/Bevel-helical gearbox B3

rolled variables, so that the extractor capacity could be repeatedly optimised for those cells which were currently in an intense emission phase. 9 Duration: 0 0 8 - 3 0 8 OlZHOlOl Sub'ect: Erection and trial operation of 3,0 tpa continuous smelting pilot plant for the environmentally clean and energysaving production of lead bullion (QSL process) Research centre: Berzelius Metallhutten-Gesellschaft mbH Richard-Seiffert-Strasse 2,4 Duisburg Government sponsorship: DM 2,1,4 5 Sponsorship ratio: 5 / Duration: 0 0 8 - 3 0 8 0ZH0 Subject: Testing of the 3,0 tpa QSL ilot plant for the environmentally clean production of leaf bullion with conventional lead concentrates and secondary raw materials and waste products (QSL process, Phases 2 and Research centre: Berzelius Metallhutten-Gesellschaft mbH Richard-Seiffert-Strasse 2,4 Duisburg Government sponsorship: DM 4,8,9 0 Sponsorship ratio: 4 / 1. Purpose of the project Up to now, sulphidic lead concentrates have almost exclusively been smelted according to the classical, two-stage roasting-reduction process In this process, the concentrates are first roasted and ag lomerated in sintering machines to remove the sulphur The lump sinter is then smelted in szaft furnace using metallurgical coke and atmospheric ox gen Precious metal, co per and lead oxidesare reduced to metal, the so- called lead bullion, &ring this process and [ gangue is separated as slag The lead bullion is then pyrometallurgically and hydrometallurgically refined into high- urity lead or processed into alloys This classical lead metallurgy is well known and has been fescribed in the literature in detail The development of the QSL process described below is based on number of patentsapplied for by Prof Paul Queneau and Prof Reinhard Schuhmann in 1, the technical feasibility of pilot plant was demonstrated by the Lurgi Chemie und Huttentechnik company, Frankfurt The QSL process is continuous ox gen smelting method for