WO2010108212A1 - Method for leaching zinc from a zinc
A method for leaching zinc from a zinc-bearing carbonate ore, the method comprising the steps of: subjecting the zinc-bearing carbonate ore to elevated temperatures of between about 300°C and about 900°C thereby producing a roasted ore; subjecting the roasted ore to an aqueous acid or alkali leach thereby producing an aqueous zinc solution; and subjecting the aqueous zinc solution to a zinc,US20130025412A1 - Method for leaching zinc from a zinc,A method for leaching zinc from a zinc-bearing carbonate ore, the method comprising the steps of: subjecting the zinc-bearing carbonate ore to elevated temperatures of between about 300° C. and about 900° C. thereby producing a roasted ore; subjecting the roasted ore to an aqueous acid or alkali leach thereby producing an aqueous zinc solution; and subjecting the aqueous zinc solution to a,US Patent for Method for leaching zinc from a zinc ore,,A method for leaching zinc from a zinc-bearing carbonate ore, the method comprising the steps of: subjecting the zinc-bearing carbonate ore to elevated temperatures of between about 300° C. and about 900° C. thereby producing a roasted ore; subjecting the roasted ore to an aqueous acid or alkali leach thereby producing an aqueous zinc solution; and subjecting the aqueous zinc solution to a,Method for leaching zinc from a zinc ore - Metaleach Limited,A method for leaching zinc from a zinc-bearing carbonate ore, the method comprising the steps of: subjecting the zinc-bearing carbonate ore to elevated temperatures of between about 300° C. and about 900° C. thereby producing a roasted ore; subjecting the roasted ore to an aqueous acid or alkali leach thereby producing an aqueous zinc solution; and subjecting the aqueous zinc solution to a,METHOD FOR LEACHING ZINC FROM A ZINC ORE,A method for leaching zinc from a zinc-bearing carbonate ore, the method comprising the steps of: subjecting the zinc-bearing carbonate ore to elevated temperatures of between about 300° C. and about 900° C. thereby producing a roasted ore; subjecting the roasted ore to an aqueous acid or alkali leach thereby producing an aqueous zinc solution; and subjecting the aqueous zinc solution to a,Patents Assigned to Metaleach Limited - Justia Patents,28.05.2015· Abstract: A method for leaching zinc from a zinc-bearing carbonate ore, the method comprising the steps of: subjecting the zinc-bearing carbonate ore to elevated temperatures of between about 300° C. and about 900° C. thereby producing a roasted ore; subjecting the roasted ore to an aqueous acid or alkali leach thereby producing an aqueous zinc solution; and subjecting the aqueous
WO2002072896A1 - A method for the,
The invention relates to a method for the leaching of oxidized ores and in particular zinc ores. The ore, wherein the valuable metals are at least partially in silicate form, are routed to an acidic leaching stage in conditions where the silicate decomposes and the valuable metal ion comes into the solution. During leaching the silicate ion first dissolves, but simultaneously decomposes and is,Zinc(zn), Cadmium(cd), Or Mercury(hg) Obtained Patents,07.01.2011· Abstract: A method of extracting zinc from a sulphidic ore is provided which comprises bioleaching the ore in a heap with acidophilic microorganisms to produce a pregnant leach solution which is recovered from the bottom of the heap.US20040089103A1 - Method for the, - patents.google,The invention relates to a method for removing calcium from a sulfate solution in the zinc production process. Calcium is removed as an anhydrate from the raw solution coming from concentrate or ore leaching before the solution purification stages.WO2002072895A1 - A method for the removal, - Google,The invention relates to a method for removing calcium from a sulfate solution in the zinc production process. Calcium is removed as an anhydrate from the raw solution coming from concentrate or ore leaching before the solution purification stages.Zinc(zn), Cadmium(cd), Or Mercury(hg) Obtained,07.01.2011· Abstract: A method for leaching zinc from a zinc-bearing carbonate ore, the method comprising the steps of: subjecting the zinc-bearing carbonate ore to elevated temperatures of between about 300° C. and about 900° C. thereby producing a roasted ore; subjecting the roasted ore to an aqueous acid or alkali leach thereby producing an aqueous zinc solution; and subjecting the aqueous zinc,Method for the recovery of zinc - Klockner-Humboldt,A method for the recovery of zinc from zinc oxide ores and/or roasted zinc sulfide or concentrates, wherein the zinc ore source is leached under substantially neutral conditions to produce a residue having a relatively high content of undissolved zinc, the residue is dried, and then suspended in a hot gas stream preferably in a smelting cyclone under reducing conditions to thereby volatilize,
Method for leaching material containing zinc oxide and,
23.05.1995· The zinc concentrate, which is mainly zinc sulfide and partly iron and quartz, is roasted, and as a result, there is obtained a calcine which is mainly zinc oxide but also contains small amounts of zinc ferrite and zinc silicate. The calcine is leached in two neutral leaching stages NL1 and NL2 by means of return acid. The formed zinc sulfate solution is conducted further to solution,US Patent Application for Method for the precipation of,,The invention relates to a method for the leaching of oxidized ores and in particular zinc ores. The ore, wherein the valuable metals are at least partially in silicate form, are routed to an acidic leaching stage in conditions where the silicate decomposes and the valuable metal ion comes into the solution. During leaching the silicate ion first dissolves, but simultaneously decomposes and is,leaching zinc methods - rcrcconnect.org,A novel method to recover zinc and iron from zinc leaching, A novel method to recover zinc and iron from zinc leaching residue (ZLR) by the combination of reduction roasting, acid leaching and magnetic separation was proposed. Zinc ferrite in the ZLR was selectively transformed to ZnO and Fe 3 O 4 under CO, CO 2 and Ar atmosphere. Inquire Now; Gold Leaching, Gold Recovery from Natural Gold,Leaching and solvent extraction purification of zinc from,,15.01.2021· An integrated hydrometallurgical process was used for the zinc leaching and purification from a zinc ore containing 9.75 wt% zinc. The zinc minerals in the oreUS Patent for Method for the precipation of silica in,,The invention relates to a method for the leaching of oxidized ores and in particular zinc ores. The ore, wherein the valuable metals are at least partially in silicate form, are routed to an acidic leaching stage in conditions where the silicate decomposes and the valuable metal ion comes into the solution. During leaching the silicate ion first dissolves, but simultaneously decomposes and is,Method of leaching material containing zinc oxide,,The method can be used for the recovery of zinc from a material containing zinc oxide and silicates. According to the way the leaching of zinc compounds is carried out in conditions where the silicates remain undissolved, and accordingly no problems with filtering. The precipitate containing silicate, process Waelz-way so that the main weight of the silicic acid contained in silicates, bound,
US Patent for Recovery of zinc from lead slag Patent,
A method for recovering zinc from slag derived from lead smelting comprises subjecting the slag to a leaching step under conditions in which zinc is dissolved into solution and silica present in the slag dissolves and re-precipitates in a form that is readily separable from liquid, and recovering zinc from the solution. The slag may be subjected to leaching in at least two stages in which in a,Method of leaching of polymetallic ore raw materials,Patent registration. Method of leaching of polymetallic ore raw materials. C22B3/14 - containing ammonia or ammonium salts. C22B3 - Extraction of metal compounds from ores or concentrates by wet processes. C22B11 - Obtaining noble metals (57) Abstract: The invention relates to ferrous metallurgy, namely to obtain precious metals methods leaching of ores containing gold, silver and other metals,WO/2010/108212 METHOD FOR LEACHING ZINC FROM,19.02.2010· This patent search tool allows you not only to search the PCT database of about 2 million International Applications but also the worldwide patent collections. This search facility features: flexible search syntax; automatic word stemming and relevance ranking; as well as graphical results. A method for leaching zinc from a zinc-bearing carbonate ore, the method comprising the steps of,METHOD FOR LEACHING ZINC FROM A ZINC ORE,A method for leaching zinc from a zinc-bearing carbonate ore, the method comprising the steps of: subjecting the zinc-bearing carbonate ore to elevated temperatures of between about 300°C and about 900°C thereby producing a roasted ore; subjecting the roasted ore to an aqueous acid or alkali leach thereby producing an aqueous zinc solution; and subjecting the aqueous zinc solution to a zinc,US Patent Application for SELECTIVE LEACH RECOVERY OF,Zinc and lead are usually concomitantly present in Zn—Pb ores and tailings. A novel non-polluting hydrometallurgical process for selectively leaching and recovering zinc (Zn) from a composite lead (Pb) and zinc sulphide containing mineral, crushed untreated rock or unconsolidated mineral particles, mill tailings and/or agglomerated or unagglomerated sulphidic zinc containing waste material,Process for the recovery of zinc from a zinc sulphide ore,,A processs for the recovery of zinc from a zinc sulphide ore or concentrate comprises the steps of subjecting the concentrate to pressure leaching with an acidic solution containing at least about 15 g/L iron in solution to produce a zinc solution and a solid leach residue containing iron. The zinc solution is subjected to zinc solvent extraction to produce a raffinate and a pregnant zinc,
leaching zinc methods - rcrcconnect.org
A novel method to recover zinc and iron from zinc leaching, A novel method to recover zinc and iron from zinc leaching residue (ZLR) by the combination of reduction roasting, acid leaching and magnetic separation was proposed. Zinc ferrite in the ZLR was selectively transformed to ZnO and Fe 3 O 4 under CO, CO 2 and Ar atmosphere. Inquire Now; Gold Leaching, Gold Recovery from Natural Gold,Investegate |Alexander Mining PLC Announcements,,31.08.2016· The patent describes a method for leaching zinc from an ore, comprising the method steps of: curing the zinc silicate ore to be leached through the application of a low volume of an aqueous acid solution having a pH of 0 or above, producing a cured zinc silicate ore more amenable to leaching through the application of an ammonium carbonate solution containing free ammonia; leaching theIndian Patents. 211403:METHOD FOR RECOVERY OF ZINC,FORM - 2 THE PATENTS ACT, 1970 (39 of 1970) & THE PATENTS RULES 2003 Complete Specification (See section 10 and rule 13) METHOD FOR RECOVERY OF ZINC BY COUNTERCURRENT LEACHING OUTOKUMPU TECHNOLOGY OY ORIGINAL 725/MUM/2005 a Finnish Public Limited Company of Riihitontuntie 7, FIN-02200 Espoo, Finland GRANTED 24-1-2007An Improved Process For Preparation Of Zinc From Zinc,zinc ash powder, at a ratio 1 : 10 roasting at a temperature of 900 to. 1300 C for a period of 30 to 720 minutes to produce zinc oxide, recovering. zinc from the said oxide by conventional methods, such as leaching with. sulphuric acid followed by electrolysis of leachant to get desired zinc , saidMethod of waelz process of zinc cakes,Method of rolling zinc Chekov, including mixing,, SUBSTANCE: there are performed following stages: ore leaching at presence of hydrochloric acid with formation of soluble chloride of metal in solution for leaching, addition of sulphuric acid and/or sulphur dioxide into solution for leaching, regeneration of solid sulphate of metal or sulphate of metal from solution for leaching,Method of leaching of polymetallic ore raw materials,Patent registration. Method of leaching of polymetallic ore raw materials. C22B3/14 - containing ammonia or ammonium salts. C22B3 - Extraction of metal compounds from ores or concentrates by wet processes. C22B11 - Obtaining noble metals (57) Abstract: The invention relates to ferrous metallurgy, namely to obtain precious metals methods leaching of ores containing gold, silver and other metals,
