Exemplary methods provide for recovery of valuable industrial metals in connection with recycling of silicon solar cells and modules. Silicon, copper, silver, and the like may be recovered separately, allowing for cost-effective recycling for silicon solar cells and modules.

Exemplary methods provide for recovery of valuable industrial metals in connection with recycling of silicon solar cells and modules. Silicon, copper, silver, and the like may be recovered separately, allowing for cost-effective recycling for silicon solar cells and modules.

The invention relates to a method for concentrating metals, in particular silver and/or tin and/or lead from scrap containing metal, by treating the material/scrap containing silver and/or tin and/or lead with a sulfonic acid of the formula RSO.sub.2OH in the presence of an oxidizing agent, wherein R can be an organic group or ammonia.

The invention relates to a method for concentrating metals, in particular silver and/or tin and/or lead from scrap containing metal, by treating the material/scrap containing silver and/or tin and/or lead with a sulfonic acid of the formula RSO.sub.2OH in the presence of an oxidizing agent, wherein R can be an organic group or ammonia.

A method for extracting and separating at least one component from a LED, the LED including at least one metal, at least one phosphor and at least one layer including polydimethylsiloxane. Also, an LED having at least one layer including polydimethylsiloxane, wherein the at least one layer comprising polydimethylsiloxane is depolymerized by the action of a solution including a solvent and a fluorine salt.

A method and apparatus for step-by-step retrieving valuable metals from waste printed circuit board particles. Many kinds of metals, most existing in form of elementary substance or alloy, are contained in the waste printed circuit boards. Molten metals are separated selectively by supergravity separation at different temperatures to achieve the step-by-step recovery. Tin-based alloys, lead-based alloy, zinc aluminum alloy, crude copper and precious-metal-enriched residues with different metal contents are separated out and collected on the condition of different temperatures (T=200300 C., 330430 C., 700900 C., 11001300 C.) and controlling the gravity coefficient (G=501000) and separation time (t=220 min) etc. Different metals or alloys can be separated quickly and efficiently and the residue concentration of precious metals can be obtained. The process is simple and low cost to provide an efficient way to recovery the enrichment of valuable metals from electronic wastes.

A method for recovering metals, such as noble metals or copper, from secondary materials and other materials having organic constituents, wherein the organic components are extracted from the secondary materials and other material by thermal treatment in a process chamber and the secondary materials and other materials having organic constituents are prepared for the recovery process.

A method for recovering metals, such as noble metals or copper, from secondary materials and other materials having organic constituents, wherein the organic components are extracted from the secondary materials and other material by thermal treatment in a process chamber and the secondary materials and other materials having organic constituents are prepared for the recovery process.

The present invention relates to compositions and processes for the extraction of metals from solid material using non-aqueous solvents and oxidisers. The processes and compositions of the present invention are useful for selectively extracting metals from solid material, particularly electronic waste material.

The present invention relates to compositions and processes for the extraction of metals from solid material using non-aqueous solvents and oxidisers. The processes and compositions of the present invention are useful for selectively extracting metals from solid material, particularly electronic waste material.