The available for smelting raw materials often do not have the required grain size upper than fine material simply cheaper. Therefore, various agglomeration processes are used to deliver such finer raw materials to the blast furnace. Küttner is involved in these processes at various points.
The most common agglomeration process is the sintering of fine ore.
As a rule, larger amounts of circulation material are used in the sintering plant. This often leads to increased emissions. A good solution here is a cloth filter system with a semi-dry sorption process. Küttner works here with Lühr in a very close cooperation. It is thus possible to remove SOx, dioxin, heavy metals and many other acidic noxious gases from the process gas and to significantly reduce the total emissions of the steelworks.
Another source of emissions from the sinter plant is the sinter cooler. Here, Küttner offers a variety of solutions with partial or full covers, with appropriate gas cleaning, to comply with the emission limits and, if necessary, combined with a heat extraction, to secure the energy in the sintered material for district heating, or other applications.
Küttner will also be pleased to supply you with complete carousel sintering systems for capacities up to 250,000 t / a.
- Stones factory
An agglomeration process which does not require heating of the material and thus is emission-free is the production of cement-bound stones in a vibrating press. This method is particularly suitable for feedstocks / circulatory substances that emit pollutants when heated. This agglomeration process developed by Küttner for the shaft furnace process is universally applicable and suitable for a large number of substances which otherwise could not be agglomerated and returned to the process route.
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