C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/354
C22B 7/00 (2006.01) C10J 3/02 (2006.01) F23G 5/08 (2006.01)
Patent
CA 1231238
ABSTRACT OF THE DISCLOSURE: There is disclosed a method for working up heavy-metal-containing residues from the chemical industry. For an economical and at the same time ecologically beneficial working up of the heavy-metal- containing residues, the heavy-metal-containing residues are introduced into a primary-gas reaction zone of a shaft gasifier containing at least one solid bed of carbon-containing material. Slag-forming substances are introduced together with the charge substances and/or together with the solid-bed formers to absorb and set the heavy metals. The lower zone of the solid bed is maintained at a temperature above the slag and ash melting temperatures. The viscosity of the slag is less than 100 poise.
467308
Freimann Paul
Krier Adam
Lugscheider Walter
Uckert Gotthard
Wallner Felix
Fetherstonhaugh & Co.
Voest - Alpine Aktiengesellschaft
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