Outotec (finland) Oy

Oskari Karhuvaara

Peter Björklund

Lauri P Pesonen

Mikael P Jåfs

Valtteri Sonninen

Matti Luomala

Pekka Saari

Mikael JÅFS

Provided are a method and to an arrangement for monitoring characteristics of a furnace process in a furnace space limited by a furnace shell of a metallurgical furnace. The arrangement comprises a process monitoring unit having a frame mounted by means of a mounting means on the metallurgical furnace outside the furnace space of the furnace shell. Also provided is a process monitoring unit for use in the method and/or in the arrangement.

Method and arrangement for monitoring characteristics of a furnace process in a furnace space and process monitoring unit

Provided are a method and an arrangement for operating a metallurgical furnace. The method comprises a feeding step, and a temperature controlling step for controlling the temperature of a molten metal layer and a slag layer in a furnace space of the metallurgical furnace. The temperature controlling step comprises a first measuring step for measuring the slag temperature (T), a second measuring step for measuring the slag liquidus temperature (T), and a calculating step for calculating a superheat temperature (T) by calculating the temperature difference between the slag temperature (T) and the slag liquidus temperature (T). In case the calculated superheat temperature (T) is outside a predefined superheat temperature range (T), the method comprises an adjusting step for adjusting to adjust the actual superheat temperature. Also provided are computer program products.

Method and arrangement for operating a metallurgical furnace and computer program product

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Espoo, Finland

Oskari Karhuvaara