Bevel-helical gear unit B2 the motor side Shaft seals see page onwards B2FV-15-C

Flender/Flender Gear Units/Bevel-helical gear unit B2

ntermediate products leads to the conclusion that the Jrect processing of ZnS concen- trates by the. cyclone smelting process can be favourable for the environment. After modifying the ori inal project plan, the first step was to perform thermodynamiccalcula- tions for the pyrometa?lurgical treatment of the zinc sulphide concentrate. The calculations showed that this process can be expected to be successful as regards zinc volatilisation and product quality. In order to determine the ignition and burning behaviour of the zinc concentrate, studies were carried out in the particlejet ignition path,which was installed in the KHD cyclone furnaceas the smelting furnace. The influence of the oxygen-concentration ratio was investigated in this con- text. The results show that sufficiently high supply of ox en, thorough mixing of oxy en and con- centrate, and adequate ignition energy are requireJ?or short reaction path andaigh sulphur burn-out. 1 Duration: 0 0 - 3 0 8 0VQ8 1 Subject: Reduction of diffuse emissions during aluminium electrolysis by the use of microelectronics Research centre: Hamburger Aluminium-Werk GmbH Postfach 9 0 7,2 1 Hamburg Government sponsorship: DM 4,5 0 Sponsorship ratio: 5 0 1. Purpose of the project In order to avoid fluoride emissions durin aluminium electrolysis, it is today customary for the electrolysis cells to be encapsulated, fittejwith individual extractors and the exhaust gasesfed to central exhaust gas purifier via collecting manifold Under normal conditions, this en- closed design allows good collection of the exhaust gases However, parts of the covering have to be removed occasionally for technical reasons, this reducing the degree of exhaust as diffuse emission of residual fluorije occurs collection Considering this, the de ree of collection is already always < OO%, meaning ; at The aim of the project is to reduce this controllable residual emission because,as is known from other publications, it