Posco

Primetals Technologies Austria Gmbh

Siemens Vai Metals Technologies Gmbh

Ulrike Schmidt

Kurt Lukschander

Robert Millner

Johann Wurm

Hado Heckmann

Seok Min Yoon

Alois Gstoettenmayr

Helmut Siegl

Chong Won Choi

A method and apparatus are disclosed for treating process water which is loaded with gaseous compounds and/or possibly with solids and comes from a wet-cleaning installation for cleaning process gas, e.g., from a melt-reduction subassembly or from a direct-reduction subassembly. Process water is introduced in a tank in a first process stage and degassed on the basis of reduced solubility of the dissolved compounds. The tank has, on its upper side, a gas-collecting chamber, in which the separated-off gases are collected and from which these are discharged. Likewise, the treated process water is discharged from the tank via a drainage means.

Method and apparatus for treating process water

A process for producing pig iron or liquid primary steel products is provided. Charge materials containing iron ore and, if appropriate, additions are reduced in at least one reduction unit by means of a reducing gas, and at least parts thereof are smelted in a smelting unit, with coal being added and with formation of the reducing gas. Reducing gas from the smelting unit and/or top gas from the reduction unit are/is subjected to cleaning. The process water obtained during the wet cleaning is degassed and in the process volatile organic compounds are removed from the process water.

Process for producing pig iron or liquid primary steel products

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Leonding, Austria

Ulrike Schmidt