The K-ALS is the ultimate GREEN technology developed by IKOI: a high-tech solution, practical, suitable for meeting the refining needs of Jewellery manufacturers and small refineries.
IKOI advanced technology for vacuum distillation under high temperature is applied into a compact furnace that allows a pre-treatment of a variety of feedstock by reducing the silver content to less than 10% and hence making it suitable for gold refining.
Specifically designed for small refiners working with high silver content, K-ALS is a flexible, cost effective and sustainable furnace, a true step towards green gold production.

Main applications

Goldsmiths’ scraps
Goldsmiths’ scraps include a wide range of production residues such as bench scraps, filings, small offcuts and mixed alloys generated during jewellery manufacturing. These materials are typically heterogeneous and difficult to process with conventional refining methods. K-ALS provides an efficient pre-treatment by separating volatile components through vacuum distillation, stabilizing the material and preparing it for downstream processes. This approach simplifies handling and increases overall process efficiency. 

Casting tree
Gold from casting tree scraps from jewellery production needs to be refined and re-used. This material is usually refined by Aqua Regia process, with inevitable metal loss, consumption of chemicals and generation of fumes and effluents. Aqua regia does not work well when silver content exceeds 10% leading to multiple refining for a single lot having silver in excess of 10%.
 
Powder from scraping operations
Powder containing precious metal is produced by different processes in Jewellery manufacturing. All this powder can be refined back to pure gold using an efficient combination of vacuum distillation and traditional methods. 

Inquartation process
Vacuum distillation with Mini-ALS can be used to substitute the inquartation by providing silver selective evaporation from the feedstock, without using any chemicals a generating by-products and effluents applicable in the parting process.