This invention deals with a system using aqueous means for solubilizing chemical components contained in sulphur type ore concentrate which may contain iron, cobalt, niquel, copper, platinum group metals and other metals considered valuable and of commercial interest. Apart from that, a method using aqueous means for solubilizing such components is described.

A heap of a material to be leached to recover a valuable metal from the material includes an electromagnetic heating system to generate heat in situ in the heap.

A heap of a material to be leached to recover a valuable metal from the material includes an electromagnetic heating system to generate heat in situ in the heap.

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 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.

Certain systems comprise a reactor (e.g., a reduction cell such as an electrolytic cell comprising an anode, a cathode, and an electrolyte) comprising molten metal within a container; and a collection vessel at least partially contained within the container of the reactor, the collection vessel comprising an opening fluidically connected to the container of the reactor. Some systems comprise a reactor; and a collection vessel comprising a first opening fluidically connected to the reactor and a second opening fluidically connected to a source of gas (e.g., inert gas) and to a source of negative pressure.

Systems and methods for recovery of molten metal are generally described. Certain systems comprise a reactor (e.g., a reduction cell such as an electrolytic cell comprising an anode, a cathode, and an electrolyte) comprising molten metal within a container; and a collection vessel at least partially contained within the container of the reactor, the collection vessel comprising an opening fluidically connected to the container of the reactor. Some systems comprise a reactor; and a collection vessel comprising a first opening fluidically connected to the reactor and a second opening fluidically connected to a source of gas (e.g., inert gas) and to a source of negative pressure.

A method of improving leach kinetics and recovery during atmospheric or above-atmospheric leaching of a metal sulfide is disclosed. A system for practicing the aforementioned method is also disclosed. Apparatus for practicing the aforementioned method is also disclosed. A new composition of matter which is formed by the aforementioned method, and which may be utilized in the system and apparatus is further disclosed. The new composition of matter may exhibit improved leach kinetics, and may have some utility in the semi-conductor arts, including uses within photovoltaic materials.

A method of improving leach kinetics and recovery during atmospheric or above-atmospheric leaching of a metal sulfide is disclosed. A system for practicing the aforementioned method is also disclosed. Apparatus for practicing the aforementioned method is also disclosed. A new composition of matter which is formed by the aforementioned method, and which may be utilized in the system and apparatus is further disclosed. The new composition of matter may exhibit improved leach kinetics, and may have some utility in the semi-conductor arts, including uses within photovoltaic materials.

A heap of a material to be leached to recover a valuable metal from the material includes an electromagnetic heating system to generate heat in situ in the heap.