Möller
The Möller ( Old High German for mixture ) is a mixture of metal-containing ores , carbon and additives that are required to extract the iron from the ore in the blast furnace process and are obtained from the components by sintering in a sintering plant. Occasionally, the carbonaceous heating fuels (mostly coke ) are also counted among the Möller, as they serve as a reducing agent in iron production.
Iron extraction
For example, iron ore is used together with coke and additives depending on the nature of the ore, such as B. Lime used in iron extraction in the blast furnace process. When charging a blast furnace, a layer of Möller follows a layer of coke. In the blast furnace, the coke serves both as a reducing agent for the ore and as a fuel. The additives in the Möller reduce the melting point of the ores and serve as a flux or as a slag builder . Their composition depends on the nature of the ore. Ores rich in silicate are processed into Möller with calcareous aggregates, ores rich in calcium are processed with silicates .
The supplement also serves to remove the iron companions sulfur and phosphorus . Limestone , salt , sand or fluorspar are used for this purpose .
Mixing the aggregates is called möllern .