Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A method and an apparatus for sorting mined material is based on using a range of options for sensing multiple properties of a mined material on a fragment by fragment basis and then analyzing the multiple types of data and making decisions about the classification of each fragment and then sorting the fragment based on the analysis. The multiple sensing options include the response of the fragments to electromagnetic radiation. Other sensing options may include sensors that look at the response of fragments of a mined material to an acoustic wave or a magnetic field or optical sensors that evaluate texture or other surface characteristics of fragments.

Abstract: A method of reducing the size of material, such as rocks of mined ore, is disclosed. The method comprises comminuting and electro-fracturing rocks of the material and thereby reducing the rock size.

Abstract: A method and an apparatus for sorting mined material is based on using a range of options for sensing multiple properties of a mined material on a fragment by fragment basis and then analysing the multiple types of data and making decisions about the classification of each fragment and then sorting the fragment based on the analysis. The multiple sensing options include the response of the fragments to electromagnetic radiation. Other sensing options may include sensors that look at the response of fragments of a mined material to an acoustic wave or a magnetic field or optical sensors that evaluate texture or other surface characteristics of fragments.

Abstract: A method of reducing the size of material, such as rocks of mined ore, is disclosed. The method comprises comminuting and electro-fracturing rocks of the material and thereby reducing the rock size.

Abstract: A process for producing a metal from the corresponding metal halide by reaction of the metal halide at elevated temperature in a reactor comprising a fluidised bed, the fluidised bed comprising seed particles of an inert material that has a melting point higher than that of the metal.

Abstract: A process for removing a carbon dioxide, HF or sulfur dioxide contaminant from an exhaust gas stream containing that contaminant comprising providing a gas stream to a reaction zone, the gas stream entering the reaction zone from underneath and being caused to flow through the reaction zone with components of velocity in substantially upwards and circumferential directions; contacting the gas stream in the reaction zone with particulate material to adsorb the contaminant on the particulate material, wherein the flow of gas in the reaction zone causes a dispersed toroidal bed of particulate material to be formed in the reaction zone; the slip velocity of the gas stream relative to the particulate material in the toroidal bed is greater than 1 m/s; and entraining a fine fraction of the particulate material in the gas stream whereby the fine fraction is removed from the toroidal bed by the gas stream exiting the bed; and separately recovering a coarse fraction of the particulate material from the reaction zone.