Branches

Non-ferrous industry

Shaft furnace for copper

Black copper melting
Black copper is produced from converter and anode slag, copper and zinc containing residual materials and from contaminated copper and brass scraps.
The copper shaft furnace is operated with a converter downstream. It operates on low coke ratios. The top gas is burnt in a combustion chamber.
The ISA-Smelter is operated as a combination of shaft furnace and converter. Via a lance gas/oil and air/oxygen are injected. Oxidizing or reducing operation can be chosen. KÜTTNER has developed a lance design for fast change over.

Distributor on a zinc dust injection system

Injection plants for shaft furnaces
KÜTTNER builds injection plants for mixtures of metal oxides and reduction agents. The materials are refined, mixed, weighed and dosed prior to injection through the tuyeres of the shaft furnace. The process makes direct use of fine material in the hot reduction zone of the furnace possible, without agglomeration beforehand.

Rotary furnace for copper and tin refining

Rotary furnaces
The non-ferrous industry utilizes rotary furnaces for many different processes. KÜTTNER builds these furnaces as holding furnaces for copper, as melting furnaces for copper and lead and as process furnaces for metallurgical treatment.

Melting of lead batteries
KÜTTNER has processes for recycling lead batteries.
An alloying plant achieves the controlled production of different lead qualities.