01 - Chemical and biological materials for industrial, scientific and agricultural use
40 - Treatment of materials; recycling, air and water treatment,
Goods & Services
Chemical substances, chemical materials and chemical preparations, and natural elements. Waste water treatment; On-site water purification services; Treatment of waste water from industrial processes; Purification of industrial waste water; Treatment of waste water from generating operations; Water treating; Water treatment and purification; Providing information relating to water treatment; Water purification.
In a method for separating metals from metal borate precipitates obtained from recovering metals from solutions, solid metal borate precipitate is heated under reducing conditions to a temperature at which the metal is separated from the precipitate in molten state, and the melt is separated from the remaining solid material.
A method for precipitating metal waste is characterized in that the waste which contains one or more dissolved metal salts, is mixed with a boron compound, and the pH is adjusted to a value at which precipitation takes place in the presence of precipitation nuclei necessary for the formation of metal borates.
C02F 1/66 - Treatment of water, waste water, or sewage by neutralisationTreatment of water, waste water, or sewage pH adjustment
A62D 3/33 - Processes for making harmful chemical substances harmless, or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by chemically fixing the harmful substance, e.g. by chelation or complexation
B09C 1/08 - Reclamation of contaminated soil chemically
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
C04B 28/18 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
C02F 5/02 - Softening water by precipitation of the hardness
C02F 101/20 - Heavy metals or heavy metal compounds
C02F 103/16 - Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
A62D 101/24 - Organic substances containing heavy metals
A62D 101/43 - Inorganic substances containing heavy metals, in the bonded or free state
C04B 103/60 - Agents for protection against chemical, physical or biological attack
C04B 111/00 - Function, property or use of the mortars, concrete or artificial stone
A method for precipitating metal waste is characterized in that the waste which contains one or more dissolved metal salts, is mixed with a boron compound, and the pH is adjusted to a value at which precipitation takes place in the presence of precipitation nuclei necessary for the formation of metal borates.
A62D 3/33 - Processes for making harmful chemical substances harmless, or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by chemically fixing the harmful substance, e.g. by chelation or complexation
B09B 3/00 - Destroying solid waste or transforming solid waste into something useful or harmless
The invention relates to a method for recovering metals from oxidic ores by hydrometallurgical methods. In the method, the oxidic ore is contacted with water under conditions in which the metal is released from the ore in water, and the metal is recovered from the solution thus obtained by precipitating with a boron compound.
In a method for recovering metals from a liquid in which they are present in dissolved form, at least one metal is separated by adding a hydroxide together with a boron compound to the liquid, wherein a permanent precipitate is obtained.
