H4-HH9-B nveyor belt gear units Apron conveyor drives Scr Helical speed reduction gearbox H4

Flender/Flender Gear Units/Helical speed reduction gearbox H4

her In principle, the process has proved to be suitable for minimising the discharge of ammonia The yields are not impaired The tendency towards encrustation in the recipitation stage is problematic, as are the poor washing-out properties for Na2S0,, the higlproportion of residual moisture, the Cabsorption during reduction and the extremely high, chemism-induced Na content during final reduction to FeV 1 1 Low-emission production of building materials, glass and ceramics The classical processes for the production of building materials contribute to consi- derable air pollution. In view of this background, projects were promoted which essentially, concentrated on investigations into the reduction of NOx formation in cement kilns and the behaviour of heavy metal speed reducerspounds (especiallythallium) dur- ing the baking of cement clinker. . Both in the baking of cement clinker and in the production of glass, the reduction of NOx emissions during high-temperature processes was considered one of the most pressing goals in previous promotion. Reduction measures based on the addition of ammonia and new type of smelting process with considerably reduced emissions and energy consumption were investigated. The glass industry uses multitude of raw materials for the production of its goods; the environmental situation of this branch of industry is correspondingly multifari- ous. Within the framework of research promotion, investigations were conducted, inter alia, into the influence of the batch moisture on smelting and volatilisation pro- perties due to their decisive influence on emissions. The potential for reducing toxic auxiliaries was also investigated, such as arsenic, selenium and cadmium, which are used for refining and/or staining and decolouring glass melts. Filter plants are in- dispensable in glass-making for minimising pollution by dust emissions. In the inter- ests of reducing the burden on landfills and of saving raw materials, the filter