Oschatz Global waste heat boiler systems have been widely used throughout the world in all processes used to extract non-ferrous metals such as lead, copper, nickel, zinc or tin. In these processes, both the hot, sticky and dust-laden process gases and the often corrosive substances in non-ferrous metallurgy represent a challenge for gas cooling and heat recovery: the various factors have to be much more precisely matched with each other than is the case in other fields. Apart from the standard heating surfaces – membrane walls, screens and bundles, Oschatz Global also use cooled furnace covers, shut–off dampers, well as furnace and reactor components in order to extend the service life of the equipment and refractory bricks to the greatest extent.
Heating surface cleaning systems specially developed for non-ferrous metallurgical process applications ensure the efficiency and availability of Oschatz Global waste heat boiler plants. Oschatz Global supplies waste heat boiler systems for all processes in operation worldwide. From 2006 to 2023, Oschatz Global successfully delivered 64 non-ferrous heat recovery boilers.
The matching smelting furnaces include:
Oschatz Global supplies a wide range of waste heat boilers (WHB) for non-ferrous metal smelting processes, which can fulfil the needs of the non-ferrous metal metallurgical processing industry worldwide. The gas cooling performance can be guaranteed to meet the customer’s requirements according to the given intake conditions.
- Flash smelters
- Ausmelt
- Fluidised bed roasters
- ISASMELT
- Smelting cyclones
- QSL
In general, the water circulation of the gas-cooled waste heat boiler is designed as combined circulation, that is, the natural circulation together with forced circulation (such as a two-channel vertical boiler, single-channel horizontal boiler) or only forced cycle (such as a two-channel horizontal boiler). The type of gas-cooled waste heat boiler and the choice of water circulation system depend on the process of the melting furnace, the geometric structure and the location of the melting furnace outlet. Changes in the flue gas outlet form and the layout of the melting furnace itself may also allow the use of other boiler types.
Based on research and long-term development, Oschatz Global can design and produce membrane water-cooled wall components, evaporator partitions, and evaporator/superheater pipe bundles. These are generally combined with a wall/partition and pipe hammer system, as well as a mould-lifting system and soot-blowing device designed and manufactured for special cases.
Years of experience from operating plants assures not only secure orders for the manufacture and supply of new plants but also increase our success in modifying and upgrading existing plants.
