Method for extraction of copper and/or nickel from cobalt-bearing solutions |
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IPC classes for russian patent Method for extraction of copper and/or nickel from cobalt-bearing solutions (RU 2465355):
 Method of producing high strength and capacity carbon sorbent / 2464226
Invention relates to a method of producing a carbon sorbent used for extracting rare metals, particularly gold cyanide from aqueous alkaline solutions. The method involves treatment of activated carbon with a polymer with amino groups. Activated charcoal is treated using polyhexamethylene guanidine hydrochloride in form of an aqueous solution. After treatment, alkali is added while stirring and the solution is separated from the carbon. The carbon is saturated with ammonia solution, phenol and formalin. The mixture is held while boiling for 1-5 hours and the carbon separated from the solution is dried at 150-160°C.
 Method of extraction of rare-earth elements from technological and productive solutions / 2462523
Method for extracting rare-earth elements from the technological and productive solutions containing iron (III) and aluminium, with a pH-0.5÷2.5, includes the sorption of rare-earth elements with strong-acid cation resin. As the strong-acid cation resin the microporous strong-acid cation resin is used based on hypercrosslinked polystyrene having a size of micropores 1-2 nm.
Method for gold extraction from cyanide solutions with dissolved mercury contained in them / 2460814
Method for gold extraction from cyanide solutions with dissolved mercury contained in them, gold-bearing ores formed during leaching, involves sorption of gold and mercury on activated carbon with enrichment of activated carbon with gold and mercury. Then, gold desorption is performed with alkali-cyanide solution under autoclave conditions, gold electrolysis from strippants so that cathode deposit is obtained and its remelting is performed so that finished products are obtained in the form of raw base gold alloy. Prior to gold desorption the selective desorption of mercury is performed by treatment of saturated carbon with alkali-cyanide solution containing 15-20 g/l of sodium cyanide and 3-5 g/l of sodium hydroxide, at temperature of 18-20°C and atmospheric pressure during 10 hours.
Method of extracting gold using macroporous resins / 2459880
Proposed method comprises preparing leaching solution bearing gold, and gold sorption by macroporous resin containing alkyl amine functional groups in amount of 0.01-1.0 mmol/g and 3-12% of cross-links with water retaining capacity making, at least, 30%, and specific surface area varying from 400 to 1200 m2/g. After sorption, gold is eluted.
Method of phosphogypsum processing for manufacture of concentrate of rare-earth elements and gypsum / 2458999
Method of phosphogypsum processing involves leaching of phosphogypsum with sulphuric acid solution with change-over of phosphorus and rare-earth elements to the solution, and gypsum residues is obtained, rare-earth elements are extracted from the solution and the gypsum residue is neutralised with the main calcium compound. In addition, leaching is performed with sulphuric acid solution with concentration of 1-5 wt %. After that, rare-earth elements are extracted from the solution by sorption using sulfocationite in hydrogen or ammonia form with further desorption of rare-earth elements with ammonia sulphate solution. After desorption to the obtained strippant there added is ammonia or ammonium carbonate with deposition and separation of hydroxide or carbon-bearing concentrate of rare-earth elements. Extraction of rare-earth elements of medium and yttrium groups to concentrates is 41-67% and 28-51.4% respectively. Specific consumption of neutralising calcium compound per 1 kg of phosphogypsum has been reduced at least by 1.6 times.
 Multicolumn sequential extraction of ionic metal derivative / 2458725
Invention may be used in hydrometallurgy. Proposed invention allows separating such metals as uranium, nickel, copper and cobalt present in liquid wastes of ore leaching. Solution containing metal ions is forced through stationary layer of resin, Particularly, through, at least, three zones. Note here that solution drive appliances are arranged between adjacent zones and between last and first zones. Proposed method comprises several sequences, each comprising, at least, one step selected from steps of adsorption, washing and desorption. Every next sequence is performed by shifting fronts into zones downstream of circuit with identical increment unless cyclic shift of inlet and discharge points.
 Method of ion-exchange uranium extraction from sulfuric solutions and pulps / 2458164
Method includes uranium sorption by anion exchange resin, uranium de-sorption from saturated anion exchange resin by sulphuric acid and obtaining finished product from strippant. Note that uranium de-sorption from saturated anion exchange resin is done by sulphuric acid solution with concentration 70-100 g/l with the presence of 1-2 mole/l of ammonia sulphate.
Method of gold extraction from mercury-containing cyanic solutions / 2458160
Method of gold extraction from mercury-containing cyanic solutions consists in sorption by ion-exchange resin of AM-2B mark. Then mercury de-sorption is carried out from saturated ion-exchange resin at a temperature 40-50°C and for 6 hours and aurum de-sorption. Note that mercury de-sorption is done by solution containing sulfuric acid 30-50 g/l with the presence of hydrogen peroxide 5-10 g/l.
 Extraction method of amount of rare-earth elements from solutions / 2457266
Extraction method of rare-earth elements from solutions containing multiple excess iron (III) and aluminium, with pH=0.5÷2.5 involves sorption using macroporous sulfocationite as sorbent. At that, as sorbent there used is macroporous sulfocationite containing more than 12 to 20% of divinyl benzene.
 Method for extracting metals from depulped ores / 2454470
Method for extracting metals from depulped ores involves crushing, ore depulping in leached solution and sorption of metal. Leaching is performed in ultrasound pulp cavitation mode. Metal sorption on ion-exchange resin is performed from pulp filtration solution in intensity field of alternating current in sorption activation mode of extracted metal and suppression of sorption of impurities. At that, polarity of electrodes is constantly changed to avoid deposition of metal on cathode. Leaching and sorption of metal is performed in a unit providing solution circulation till the specified completeness of leaching from ore and its complete sorption on ion-exchange resin is achieved.
 Method and device to process oxidised ore materials containing iron, nickel and cobalt / 2463368
Method is carried out in two stages - melting and further reduction of a slag melt, sending the slag melt from the melting stage to the reduction stage is carried out in a direction opposite to motion of gaseous and dusty products, gaseous products of the melting and reduction stage are burnt above the melt of the reduction stage. The amount of oxygen in a wind supplied into the melt at the melting stage makes 0.9-1.2 from the theoretically required one to oxidise fuel carbohydrates to CO2 and H2O, amount of oxygen in a wind supplied for afterburning of gases above the slag melt of the melting stage makes 0.9-1.2 from the one theoretically required to oxidise components of effluent gases to CO2 and H2O, amount of the oxygen-containing wind supplied into the melt at the melting stage makes 500-1500 m3/m3 of the slag melt, the amount of the oxygen-containing wind supplied to the melt at the reduction stage makes 300-1000 m3/m3 of the slag melt. A furnace by Vanyukov is disclosed, in which a gas flue for joint removal of gases of melting and reducing chambers is installed in the end of the melting chamber dome at the distance of the reducing chamber above tuyeres of the upper row of the melting chamber along the vertical line in gauges of the lower row tuyere relative to the plane of the lower row tuyeres, the melting chamber bottom is arranged by 5-30 gauges below, the horizontal plane of upper row tuyere installation is by 30-80 tuyeres higher, the horizontal plane of lower row tuyeres installation in the reducing chamber is arranged below the upper edge of the vertical partition between the melting and reducing chambers by 40-85 gauges of the reducing chamber tuyeres.
Method of dressing oxide nickel ores / 2458742
Invention relates to ore dressing and may be used for processing oxide nickel ore to up performances in pyrometallurgical production of ferroalloys. Proposed method comprises grinding ore to 2.0-3.0-mm-size, thermal treatment of ground ore to 550-600°C for, at least one hour, magnetic separation of annealed ore to extract magnetic fraction, fractionation of nonmagnetic fraction in its upward flow at hydrodynamic conditions and flow speed of 30-50 m/h to extract fraction of minus 0.3 mm.
 Method to produce nickel matte / 2455375
Agglomerate oxidised nickel ore and fuel reducing agent are loaded into the furnace. Oxygenated blasting is fed to the combustion zone and recovery-sulfided melting is carried out. Supply of oxygenated blasting is performed through the blast tuyeres placed at least at two levels Through the first level of the tuyeres the main blast is supplied, and through the second level of the tuyeres, located above the first level, additional oxygenated blasting is supplied. The distance between the tuyeres of the first and second levels is 660-1000 mm, while the number of primary blasting is greater than the number of additional blasting.
 Method of pyrometallurgical processing of oxidised nickel ores / 2453617
Method involves pre-heating of nickel ore in a tubular rotary furnace and reduction smelting in the electric arc furnace. At the same time, the nickel ore is preheated with or without fluxing agents at temperature below 700 °C without obtaining liquid melts. Before reduction smelting, the nickel ore is melted with fluxing agents in a smelting furnace producing ore-flux melt, which is directed to reduction smelting in an electric arc furnace of alternating or direct current. Gases of the smelting and electric arc furnaces are used for heating the nickel ore.
Method of processing copper-nickel sulphate solution / 2449033
Invention relates to hydrometallurgy of copper and nickel and may be used for processing sulphate solutions of copper and nickel. Proposed method comprises nickel sulphate crystallisation. Note here that, prior to crystallisation, solution is processed by ammonia water to pH of 4-4.5 at not over 60°C. Nickel sulphate double salt is subjected to isohydric crystallisation with reaction volume cooling to 15-25°C and separation of crystallised double salt from amorphous phase of appropriate component and mother solution. Said separation is carried out in upflow at variable hydrodynamic conditions created by mother solution at its linear rate of 6-8 m/h.
 Extraction of metals from sulphide minerals / 2448171
Method has been elaborated for two-stage dilution of nickel in leaching acid. Suspension of mineral and acid is activated by oxidation. It is performed during T1 time by means of electrolysis or alternatively chemically, by adding for example of oxidating acid to mineral. After activation the suspension is exposed in oxygen-free conditions during T2 time. During T2 time much quicker dilution of sulphide begins; quick decomposition of sulphide gives the possibility to nickel to be diluted and thus leached from mineral. Diluted nickel is extracted from leaching acid for example by electrochemical extraction.
 Method of recovery of valuable metals from superalloys (versions) / 2447165
Proposed method consists in valuable metals are decomposed in salt melt containing 60-95 wt % of NaOH and 5-40 wt % of Na2SO4. Then, melt decomposition product is converted into solid phase by cooling to room temperature. After cooling, minced melt decomposition product is converted in water at temperature lower than 80°C to produce water suspension and water fraction is separated by filtration for components to be extracted therefrom.
Method for obtaining high-purity nickel for sputtering targets / 2446219
Sublimation of nickel chloride powder and diffusion reduction of nickel chloride vapours is performed until compact reduced nickel is obtained. At that, sublimation of nickel chloride powder is performed in 10 passes of sublimation zone in wet argon flow at temperature of 930°C, and the obtained nickel chloride ingot is loaded to reactor and its sublimation is performed in the flow of dried argon and diffusion reduction of nickel chloride vapours is performed at temperature of 930°C in dried hydrogen flow. Then, vacuum floating-zone refining is performed until nickel monocrystals are obtained, and the required amount (as to weight) of nickel monocrystals is remolten in flat crystalliser in vacuum so that flat ingot with penetration through the whole depth of not less than two times on each side is obtained.
 Method for obtaining cobalt and its compounds / 2444574
Method for obtaining cobalt and its compounds involves conversion of cobalt from cobalt-bearing raw material to the solution; deposition of cobaltic hydroxide (III) using oxidiser and neutraliser, dilution of cobaltic hydroxide (III) with conversion of cobalt (III) to cobalt (II). Then, the obtained solution is cleaned from impurities and metallic cobalt or its compounds are obtained. Cobaltic hydroxide (III) is diluted with the participation of recovered reduced forms of iron and/or copper salts in the range of oxidation-reduction potential of 300-700 mV relative to silver-chloride comparison electrode and pH 1-3, thus adjusting the temperature of the process by means of evaporation cooling. Recovery of reduced forms of iron and/or copper is performed in a separate unit using the reducer. At insufficient amount of copper and iron in raw material supplied to the process there performed is cleaning of leaching solution from copper by cementation and recirculation of cleaning product to the recovery stage of reduced forms of iron and/or copper.
Method of producing nickel matte / 2441082
Burden containing pelletised oxidised nickel-containing or and reducing fuel are loaded into shaft furnace. Then, reducing-sulphiding smelting is carried out using coke reduction agent as fuel. Note here that said coke is produced by carbonising the burden containing 5 to 100% of product, the yield of volatile substances making some 14-25%, obtained by delayed low-temperature carbonisation of heavy oil residues.
Method to extract copper and molybdenum from sulfide copper-molybdenum ores / 2463367
Method includes main floatation with several rewashes by sulphydric and apolar collectors to produce a collective crude copper-molybdenum concentrate. Then its treatment with a reagent is carried out, such as sodium sulphide, and selective floatation to produce a foamed molybdenum-containing product and a chamber copper-containing concentrate. When processing a crude copper-molybdenum concentrate, a combination of sodium sulfide and sodium thioantimonate at the ratio of 4:1÷1:1.
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FIELD: metallurgy. SUBSTANCE: method involves supply of solution with high content of cobalt, which contains cobalt, nickel and copper; sorption by means of contact of the above solution with N-(2-hydroxypropyl)picoline amino resin. Selective elution of cobalt, nickel and copper is performed after sorption by means of continuous gradient acidic elution. At that, pH of the above solution is less than or equal to 2. EFFECT: reducing the costs and increasing the efficiency of the method. 2 cl, 1 ex
The present invention relates to an improved method of extraction of copper and/or Nickel from solutions containing cobalt. For many years the unique ability of bis-picolylamine chelat forming resins, such as DOWEX™ N-4195 and XUS-43578, commercially available from The Dow Chemical Company, to remove traces of Nickel from cobalt electrolyte at low pH, gave them a special place in the flow charts of some refineries cobalt in the world. Later cobalt began to recover as a "bonus"-the metals copper mining or processing waste. These threads cobalt electrolyte often contain substantial amounts of copper along with small amounts of Nickel. While bis-picolylamine resin well is used to remove Nickel, they are hyperselective for copper and effectively elute copper with sulfuric acid (ammonia or other alkali is usually required for elution), as they work with Nickel, and can therefore become contaminated with copper. In the production of cobalt highest quality from primary treatment plants cobalt purity cobalt electrolyte final stage is paramount to achieving high-quality cobalt characteristics on the basis of Electrovaya. Some refineries cobalt mainly use the define the company selective removal of Nickel, using resin helatoobrazutee. Most associated with the mining of Nickel and not challenged by the residual copper ions in their concentrates of high cobalt content. However, some new producers of copper and some mines special cobalt mining plan to produce cobalt highest quality, but are faced with significant levels of copper in their concentrates of high cobalt content and electrolytes. The methods of industrial allocation of Nickel from solutions of high cobalt content (i.e. cobalt electrolyte) exist in commercially managed devices. These methods use selective Nickel bis-picolylamine (Bis-PA) functionalized polymer chelat forming resin (i.e. DOWEX® M-4195; Dow XUS-43578 chelat forming resin). Bis-PA resin is unique in many commercial products of ion exchange. They are able to adsorbirovanny transition metal ions even when the pH of the raw material is less than 2, differentiating them from less universal iminodiacetic acid (IDA) hepatoblastoma resin. These resins have proven to be very economical. New methods of using Bis-PA resin systems continuous ion exchange (continuous ion exchange CIX) has very much improved the efficiency of the separation. Application CIX technology in comparison with standard treatment across NEPAD iny Layer, minimizes supply of resin, water and chemical use. Under conditions of standard processing through a Fixed Layer, a significant portion of the stock resin do not participate in the "working" process. Only part of the resin, which is heavily exposed to the adsorption of the target ion (transition zone mass), does "work". The balance of the resin or: 1) exhaust and in equilibrium with the filing; or (2) pending solution for filing. Continuous treatment addresses this inefficiency by immediate move waste (loaded) resin on the next stage of processing, minimizing the amount of resin, pending submission. CIX provides a very efficient operation, resulting in high-quality cobalt electrolyte and market products of Nickel. The problem arises, however, if raw materials for industry cobalt electrolyte contains copper ions. "Hyperselective" Bis-PA resin for copper ion (cupreous combustor and Cupric) leads to the resin contaminated with copper ions, thereby reducing its ability and effectiveness to remove Nickel. In contrast to the behavior of Nickel and cobalt loaded on Bis-PA resin, solenoceridae copper ions effectively not elute from the resin with acid additionally separated by. Consequently, alkaline elution, through ligand exchange in ammonium hydroxide, which is difficult chemical is Eski intense and stressful for the matrix resin, because the resin is compressed and forms a convexity at the time of such transactions. So far, the most practical solution for refinery cobalt with copper in raw materials for the industry of cobalt, was to use "protective layers" of the same Bis-PA resin, which is loss-making mines copper, forward resins removal of Nickel. A little less "protective layer can then be subjected to periodic alkaline elution, without interrupting the process of removing Nickel or affecting a larger volume of resin removal of Nickel. Unfortunately, the "protective layer" can be expensive and time-consuming. Many locations refineries do not allow, or wish to consume the cost of treatment with ammonia and ammonium waste and by-products. Successfully present invention solves the problems of the prior art, providing an alternative method of processing copper in the method of purification of Nickel. This alternative method is not only suited for processing of copper, but also lowers operating costs and increases the efficiency of the entire method of purification of Nickel. The present invention provides a method for the recovery of cobalt, including: i. the supply of the solution to the high content of cobalt, in which the solution of high cobalt content includes cobalt and Nickel; ii. contact rastv the RA of the high content of cobalt with N-(2-hydroxypropyl)picolylamine resin to download N-(2-hydroxypropyl)picolylamine resin cobalt and Nickel; iii. elution of cobalt from the loaded N-(2-hydroxypropyl)picolylamine resin; and iv. elution of Nickel from a loaded N-(2-hydroxypropyl)picolylamine resin. As used here, the solution to the high content of cobalt involves the solution containing cobalt with at least 10 g/l of cobalt. In the present invention a solution of a high concentration of cobalt in contact with N-(2-hydroxypropyl)picolylamine (NRRA) functionalized resin. The solution to the high content of cobalt contains Nickel and may also optionally contain copper. In the present invention is applied N-(2-hydroxypropyl)picolylamine (NRRA) functionalized resin such as, for example: NRRA Resin; i.e. XUS-43605 or XFS-43084 developing hepatoblastoma resin, obtained from The Dow Chemical Company. This resin was initially developed as a resin mining copper, capable of replacing solvent-extractants, they could achieve similar (or better) removal of Nickel with greater selectivity of Ni:Co, eliminating the need for an exception for copper protective layer ammonium and alkaline elution compared to Bis-PA resin. It is interesting to note that at very low pH chemical affinity of copper for Bis-PA resin by several orders of magnitude greater than for NRA resin. Within pH 2, the resin has a high x the chemical affinity for Nickel and/or copper, but almost no chemical affinity for cobalt, in contrast to the selectivity old Bis-PA resin, which at the same pH strongly binds to all three metals. the pH for the method is effective at low pH. The preferred pH is less than or equal to 2. NRRA resin of the present invention can be used in highly efficient ways, especially in the device of continuous ion exchange, such as, for example selling Outec, Puritec, Calgon Carbon and IONEX. Preferably the method of the present invention is continuous. NRRA resin of the present invention has a particle diameter of 300 to 500 microns, preferably from 350 to 450 microns, and more preferably from 375-475 microns. NRRA resin of the present invention are macroporous bubble resin and typically have a uniform particle size. In the present invention, a certain amount of cobalt along with the Nickel loaded on the resin, and when there is copper, copper "dozagruzki with Nickel on NRRA resin, still readily eluted with acidic additionally separated by. This method differs from previous methods of the prior art by the fact that alkaline eluent is not needed. An additional benefit of NRRA resin in comparison with the Bis-PA resin of the previous prior art is that binds much less cobalt with NRRA resin than with Bis-PA resin, making it easier for the elution of Nickel and a diagram d is the Tcl of the eluate cobalt. As ions of Nickel and/or copper load on NRRA resin, cobalt, "embossed" or "extruded" from the resin and replaced by Nickel and copper. During this stage, the load profile of elution of cobalt consistently higher than the content of the submission, indicating that the cobalt after the initial binding is released. Industrial refineries cobalt using Bis-PA resin of the previous prior art dealing with the fact that at the point where the resin is exhausted and ready for elution of Nickel, a significant amount of cobalt is sodagreen Nickel. Before the Nickel can be blueraven, sodagreen cobalt must be selected from resin and restored to process when preparing the solution supply system to the dissolved cobalt. Selective elution of cobalt and Nickel may be simple acid gradient elution. Cobalt eluted from the loaded resin acid, such as sulfuric acid, such as, for example, 2% sulfuric acid, thus the processing plant produces a relatively undesirable moderately acid byproduct stream, approximately 25% of the initial feed volume which contains 5-10 g/l of cobalt. Most of this "by-product" can be used as acid dissolved cobalt supplied solution, but it nevertheless represents 2.% cobalt recyclebank detained solution to complete the process in comparison with less than 0.2% of cobalt recyclebank detained solution for NRA resin of the present invention. Selective elution of Co, Ni and/or copper may be simple acid gradient elution. Accordingly, NRA resin dramatically and reduces CAPEX (no need for C protective system) and WALNUT (less With the swelling solution) for refineries cobalt. EXAMPLE Example 1: raw materials Example 1 was executed on false cobalt electrolyte prepared by dissolving sulphate cobalt (II) and Nickel sulfate (II) in dilute sulfuric acid. False electrolyte contained 90 g/l of cobalt and 400 ppm of Nickel. False electrolyte was adjusted to pH process with sulfuric acid and heated to 70-75 degrees Celsius. Example 1 was completed using three columns from CIX pilot skid. Adsorption was done in several stages and elution were performed on a single column. Columns were formed from transparent PVC with a Bang with a wedge-shaped bars HASTALLOY in the top and bottom. These speakers were 3.8 cm in diameter and 100 cm height. Each was charged with 1 liter of resin (88 cm depth) and the remainder of the column was filled with inert polypropylene balls. Adsorption and elution was carried out by way downstream through a Masterflex peristaltic pumps. The flow rate of the adsorption feed were set at 7.5 Volumes of Layer (OS) on the hour (3 Nr. × 1 l × 7.5 l/h=22.5 l/h=375 ml/min). Threads elution b is installed in OS 5.5 - 7 OS for an hour or 91.6-116 ml/min (only one column on the OS). The sample (30 ml) were collected periodically, and recorded the time and flow rate. Analyses of feed, product, and purified products were made primarily Atomic Adsorption (AA) Spectroscopy. 1. Method of extraction of copper and Nickel from solutions containing cobalt, including: 2. The method according to claim 1, wherein the pH of the above solution is less than or equal to 2.
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