Abstract:
The present invention discloses a new recovery of base metals from sulphide ores and concentrates, which comprises mixing the base metal's ore with ferric salts, heating the said mixture; adding water to form a pulp, stirring and filtering the pulp.
Abstract:
Reagent compositions, methods for their manufacture and methods of their use are described. In particular, provided are reagent compositions comprising an aldoxime and ketoxime with an alkyl substituent. Also provided are methods of metal recovery using these reagent compositions.
Abstract:
A process for treating a metal sulphide concentrate which includes the steps of: a) roasting the concentrate to reduce the sulphide content of the concentrate, to a negligible value and b) melting the concentrate, under reducing conditions, in an electrically stabilized open-arc furnace, in particular a DC arc furnace.
Abstract:
The present invention discloses a process for simultaneously preparing zinc metal and aluminum chloride, which comprises reacting melted zinc chloride with aluminum in powder, granule or molten liquid thereof shape at an elevated temperature in the reactor while agitating, contacting the generated vaporous aluminum chloride containing zinc chloride with aluminum in a refining tower embedded with aluminum granules, and desublimating the resulting gaseous aluminum chloride; and discharging zinc metal from the bottom of the reactor, and if necessary, the resulting produced aluminum chloride gas is additionally passed to the rotating pipe embedded with aluminum granule in order to obtain the high purity aluminum chloride.
Abstract:
Methods and systems for removing polar compounds from a metal-containing solution. According to various example aspects, methods and systems for removing hydrolysis byproducts and other polar compounds from a metal-loaded organic solution of a solvent extraction process.
Abstract:
Methods, systems, and components suitable for carbothermal reduction processes are disclosed. Exemplary systems include a reactor, such as hybrid solarthermal-electric reactor, a solar thermal reactor, an electric reactor, or a reactor heated by gas combustion, a pellet source, a gas reactant source, and a vacuum source. The reactor can operate as a moving bed or pseudo moving bed reactor.
Abstract:
A process and an apparatus are disclosed for improved recovery of metal from hot and cold dross, wherein a dross-treating furnace is provided with a filling material with good capacity to store heat. This filling material is preheated to a desired temperature by injection of an oxidizing gas to bum non- recoverable metal remaining in the filling material after tapping of the recoverable metal contained in the dross and discharging of the treatment residue, When dross is treated in such furnace, the heat emanating by conduction from the filling material is sufficient to melt and separate the recoverable metal contained in the dross, without addition of an external heat source, such as fuel or gas burners, plasma torches or electric arcs and without use of any salt fluxes. Furthermore, the recovered metal being in the molten state can be fed to the molten metal holding furnace without cooling the melt; in addition, the non-use of fluxing salt for the treatment means that the non- contaminated residue can be used as a cover for the electrolytic cells in the case of aluminum. In the case of zinc dross, the residue is a valuable zinc oxide by-product very low in contaminants.