By partnering with Metso, a world leader in pyrometallurgical
processing, AVL is confident that the roasting process can be greatly improved.
The specific target of the present pcbis project is the waste printed circuit board (wpcb), that in most of the cases is treated with a pyrometallurgical
approach, making use of high temperature in order to obtain the separation of metals and the volatilization of plastics; it is really effective in this task, but it has two major limitations: i.
The innovative technology, the first in the world of its kind, is based on pyrometallurgical
methods and allows to process 4%-grade lead and zinc ores with recovery efficiency 80-95%.
These are the major concerns associated with pyrometallurgical
However, relative to viscosity, the available data of electrical conductivity of [Fe.sub.x]O-bearing slags are far more enough, considering their widely applications in the pyrometallurgical
Nowadays, more than 97% copper in the world is produced by pyrometallurgical
smelting, and a large amount of smelting slag is produced at the same time.
In this connection different methods are developed: mineral beneficiation (mechanical, physical and physiochemical) and extractive metallurgy (Pyrometallurgical
and hydrometallurgical), to process these powders with the aim of leaching the valuable metals [13, 14].
Only two facilities conducted pyrometallurgical
processes to extract metals, while others sent the separated waste to downstream facilities for processing.
The plant uses an innovative pyrometallurgical
process to extract the zinc contained in the dust.
Zinc sulphide and zinc carbonate are the main source of zinc production however it is partly produced from various complexes and wastes such as zinc ash, zinc dross, EAF dusts, scraps and slags by pyrometallurgical
, hydrometallurgical or their combination processes .
About 80% of copper is produced by pyrometallurgical
Air and water emissions are a challenge for both hydrometallurgical and pyrometallurgical
production of copper (S[O.sub.2], dusts, heavy metal emissions, etc.).