A method to extract and refine metal products from metal-bearing ores, including a method to extract and refine titanium products. Titanium products can be extracted from titanium-bearing ores with TiO.sub.2 and impurity levels unsuitable for conventional methods.

A process for recovering metal value-containing precipitates in consistently high concentrations from a metal-containing composition by combining selective roasting and leaching steps.

Liquid metal degassing device comprising a chamber containing a liquid metal bath, a device for circulating a gas through a purification chamber and in that the purification chamber comprises a getter material configured to trap dihydrogen from the circulating gas. Method for degassing a liquid metal bath to reduce the hydrogen concentration of the liquid metal comprising the following steps a) Preparing a liquid metal bath, preferably an aluminum alloy b) Circulating a gas, c) Exchanging hydrogen from the circulating gas with the liquid metal such that the hydrogen dissolved in the liquid metal bath diffuses into the circulating gas and enriches the circulating gas with dihydrogen, d) Purifying the circulating gas enriched with dihydrogen in a purification chamber comprising a getter material configured to trap dihydrogen from the circulating gas.

Provided are a method for processing titanium extraction slag and a carbon extraction and dechlorination tailing. The method comprises the following steps that a titanium extraction slag raw material is ground to obtain a treated material with a particle size being 0.3120 m and d.sub.9090 m; a first solvent and a treated material are mixed with a liquid-solid ratio of (3.54.5): 1 L/kg, and a first capturing agent and a first foaming agent are added for mixing and then subjected to a primary flotation to obtain a floating product and a sinking product; and a second solvent is added into the floating product to adjust the liquid-solid ratio to (45): 1 L/kg, a second capturing agent and a second foaming agent are added for mixing and then subjected to a secondary flotation to obtain a foam product; the foam product is filtered and dried to obtain a refined carbon, and the sinking product is filtered and dried to obtain the carbon extraction and dechlorination tailing, wherein the d.sub.9090 m means that more than 90% of the powder in the treated material has a particle size of less than 90 m. The method has the advantages that carbon in the titanium-extracted slag can be recycled, chlorine is removed, and the carbon extraction and dechlorination tailing can be used as a building material raw material.

The present invention provides a process for recovering transition metal tetrahalides from a waste stream coming from a catalyst manufacturing process by (a) establishing a mixed stream comprising transition metal tetrahalide and transition metal alkoxyhalides; (b) forming a falling liquid film from the mixed stream of step (a) at a temperature of from 25 to 85 C. and an absolute pressure of from 0.05 to 0.6 bar; and (c) establishing from the film of step (b) a first vapour stream containing from 90 to 100% of recoverable components and a second liquid stream containing about 10 to 80% of titanium haloalkoxides.

A process operating at super-atmospheric pressure for leaching a titanium containing ore with an HCl and producing titanium dioxide with integrated steps of solvent extraction for removing iron from the leached ore and solvent extraction of a resulting titanium enriched raffinate to produce particles suitable for finishing into pigment grade TiO.sub.2. The process can integrate the recovery of HCl from both solvent recovery steps and the recovery of solvent. The process also produces commercial grade ferric chloride.

The invention provides a method for the recovery of a metal-containing product (M.sub.Prod) comprising: providing a composite material comprising a matrix of oxidised reductant (R.sub.o), a product metal (M.sub.P) dispersed in the matrix of oxidised reductant (R.sub.o), and one or more metal compounds (M.sub.PC.sub.R) of the product metal (M.sub.P) in one or more oxidation states dispersed in the matrix of oxidised reductant (R.sub.o); and treating the composite material to at least partially remove the one or more metal compounds (M.sub.PC.sub.R) from the matrix of oxidised reductant (Ro) to form the metal-containing product (M.sub.Prod).

The invention provides a method for the recovery of a metal-containing product (M.sub.Prod) comprising: providing a composite material comprising a matrix of oxidised reductant (R.sub.o), a product metal (M.sub.P) dispersed in the matrix of oxidised reductant (R.sub.o), and one or more metal compounds (M.sub.PC.sub.R) of the product metal (M.sub.P) in one or more oxidation states dispersed in the matrix of oxidised reductant (R.sub.o); and treating the composite material to at least partially remove the one or more metal compounds (M.sub.PC.sub.R) from the matrix of oxidised reductant (Ro) to form the metal-containing product (M.sub.Prod).

The titanium-containing oxide slag, low-purity silicon and slagging fluxes are subject to reduction smelting together, and a bulk SiTi intermediate alloy is obtained by slag-metal separation; the obtained bulk SiTi intermediate alloy is crushed into SiTi intermediate alloy particles; and the obtained SiTi intermediate alloy particles are used as an anode, metallic molybdenum or metallic nickel as a cathode, metallic titanium as a reference electrode, and NaClKClNaF together with small amounts of Na.sub.3TiF.sub.6 or K.sub.3TiF.sub.6 as a molten salt, to carry out the electrolysis under a high-purity argon atmosphere at a temperature of 973 K. Ti in the SiTi intermediate alloy particles dissolved at the anode and deposited at the cathode, while Si in the SiTi intermediate alloy particles fell off from the anode as metallic silicon powder.

Process for producing a titanium alloy material, such as a titanium aluminum alloy, are provided. The process includes reduction of TiCl.sub.4), which includes a titanium ion (Ti.sup.4+), through intermediate ionic states (e.g., Ti.sup.3+) to Ti.sup.2+, which may then undergo a disproportionation reaction to form the titanium aluminum alloy.