WO2009109812A1 Process for recovering copper

Process for recovering copper sulphide and optionally molybdenum sulphide from a copper bearing ore by froth flotation consisting in crushing said ore mixing the obtained ground powder with at least a collector and water aerating the slurry removing and concentrating the mineral froth formed at the surface of the bath wherein the

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US3426896A Flotation of bulk concentrates of

molybdenum copper flotation isothiouronium collector Prior art date 1965 08 20 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired Lifetime Application number US481420A Inventor Robert E Baarson

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molybdenum ore flotation

CopperMolybdenum ores Danafloat Home. Recovery of copper is by standard flotation reagents identified in the copper ore flotation description. Molybdenum will float naturally with the copper but can be crowded in the froth by the copper mineralization and use of a moly collector (such as diesel oil kerosene refined oils pine oil or xanthate

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Copper Molybdenum ores Danafloat

Recovery of copper is by standard flotation reagents identified in the copper ore flotation description. Molybdenum will float naturally with the copper but can be crowded in the froth by the copper mineralization and use of a moly collector (such as diesel oil kerosene refined oils pine oil or xanthate ester) enhances its floatability.

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US Patent for Process for recovering copper

Process for recovering copper sulphide and optionally molybdenum sulphide from a copper bearing ore by froth flotation includes crushing said ore mixing the obtained ground powder with at least a collector and water aerating the slurry and removing and concentrating the mineral froth formed at the surface of the bath wherein the collector

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Recovery of molybdenum and copper from

Until now there are mainly three approaches used in the flotation recovery of molybdenum and copper from their porphyry sulfide ores. One is the bulk copper∠molybdenum flotation followed by separation which has been widely used in several large scale mines such as Dexing copper mine (Jiangxi Province China) .

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flotation in mining copper and gold oxide ore

Flotation of Gold and Gold Bearing Ores ScienceDirect. 7.5. Flotation of CopperGold Ores. For the bulk flotation of copper minerals and gold from supergene copper ores it is normal practice to add a xanthate as the primary collector and dithiophosphate as a secondary collector (Bulatovic 1997).

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US8088347B2 Process for recovering copper

Process for recovering copper sulphide and optionally molybdenum sulphide from a copper bearing ore by froth flotation includes crushing said ore mixing the obtained ground powder with at least a collector and water aerating the slurry and removing and concentrating the mineral froth formed at the surface of the bath wherein the

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DI(4 5 CARBON BRANCHED PRIMARY ALKYL)

16/03/1971· As most flotation operations are conducted at a pH of between about 9 and about 11 and usually 10 or 11 the form in which the di(4 5 carbon branched primary alkyl) dithiophosphate is added is relatively immaterial and even if the di(4 5 carbon branched primary alkyl) dithiophosphate is blended with fairly large quantities of alkalies or

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NICKEL AND COBALT ORES FLOTATION

alkyl dithiophosphates in the presence of variety of activators depressants and dispersants. and copper (0.04}0.4%). The easily Soatable non sulRde min erals dilute the grade of the concentrate and also III/NICKEL AND COBALT ORES FLOTATION 3493.

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Silver ores Danafloat

Flotation response of silver minerals is normally best at natural pH because lime tends to depress silver minerals in flotation. Use of soda ash for elevating pH is suggested as an alternative pH modifier. Alkyl dithiophosphates are used when high silver mineral selectivity is required.

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A Review of the Flotation of Copper Minerals

Oxidic ore can be concentrated using flotation or if it has a low acid demand it may be economic to acid heap leach the stockpile. The recovery of these copper minerals by flotation or hydrometallurgy from ores typically containing 0.5%TCu (open pit mines) and 1 2%TCu (underground mines) is of great commercial importance.

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The influences of collector chemistry on kinetics

These reagents are reputed to improve molybdenum and gold recoveries from copper ores and are probably used as co collectors. Alkyl mercaptans Lower homologues are excessively odorous but the longer chain C12 type can be used as a co collector in copper molybdenum flotation. The reagent can also be used in copper slag flotation.

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Coppermolybdenum ores flotation in sea water

Laboratory rougher flotation tests were conducted with two samples of CuMo ores in fresh water and in sea water as a function of pH. In both cases Cu recoveries were slightly lower in sea water than in fresh water for a wide range of pH (pH 712).

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Flotation of Copper Sulfide Ores PDF Free

The floatability of molybdenum during copper flotation also depends on many factors including type of collector type of frother flotation pH and type of hydrocarbon oil used. During the flotation of copper molybdenum ores fuel oil or kerosene is added to the grinding to enhance molybdenum recovery.

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Flotation for froth flotation of sulfide ores of non

The composition of copper molybdenum ores consist of chalcocite Cu 2 S covellite uS chalcopyrite CuFeS 2 molybdenite (MoS 2 pyrite FeS 2 and other minerals. Copper molybdenum ores are normally processed by the circuit to the ri collective flotation of sulfide copper molybdenum ores as collectors for copper minerals used xanthogenate

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The influences of collector chemistry on kinetics

These reagents are reputed to improve molybdenum and gold recoveries from copper ores and are probably used as co collectors. Alkyl mercaptans Lower homologues are excessively odorous but the longer chain C12 type can be used as a co collector in copper molybdenum flotation. The reagent can also be used in copper slag flotation.

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PROCESS FOR RECOVERING COPPER SULPHIDE

27/01/2011· Process for recovering copper sulphide and optionally molybdenum sulphide from a copper bearing ore by froth flotation comprising crushing said ore to obtain ground powder mixing the obtained ground powder with at least a collector and water to obtain a slurry aerating the slurry removing and concentrating mineral froth formed at a surface

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US20110020198A1 Process for recovering copper

Process for recovering copper sulphide and optionally molybdenum sulphide from a copper bearing ore by froth flotation includes crushing said ore mixing the obtained ground powder with at least a collector and water aerating the slurry and removing and concentrating the mineral froth formed at the surface of the bath wherein the

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Optimization of reagent dosages for copper flotation using

flotation of porphyry copper and copper molybdenum ores. In copper flotation plants an increase of 1%2% in recovery and/or grade is economically remarkable. In this work reagent optimization is a very important issue and much time and attention are spent on the optimization of flotation reagents in order to provide the

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OPTIMIZATION OF FLOTATION PARAMETERS FOR BENEFICATION

Optimization of flotation parameters for beneficiation of a molybdenum ore 525 found in low grade ores and associated with copper sulfides. In order to produce molybdenite concentration firstly a bulk copper molybdenum concentrate is obtained by floating Cu Mo together. Secondly molybdenite is enriched selectively by

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Sodium dithiophosphate

Sodium dithiophosphate is the salt with the formula Na 3 PS 2 O 2. It is usually supplied as the hydrated solid or as an aqueous solution together with other thiophosphates such as sodium monothiophosphate and sodium trithiophosphate. It is a colorless compound but commercial samples can appear dark owing to the presence of impurities.

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NICKEL AND COBALT ORES FLOTATION

alkyl dithiophosphates in the presence of variety of activators depressants and dispersants. and copper (0.04}0.4%). The easily Soatable non sulRde min erals dilute the grade of the concentrate and also III/NICKEL AND COBALT ORES FLOTATION 3493.

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Sequential and selective flotation of sulfide ores

07/01/1992· A sequential flotation process for the separation of components of an ore containing sulfides of copper and molybdenum involves initially effecting selective flotation of the copper component directly from the ore by conditioning the ore with a combination of a source of bisulfite ion and causticized starch to produce a conditioned ore having a

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Froth flotation

Simple flotation circuit for mineral concentration. Numbered triangles show direction of stream flow. Various flotation reagents are added to a mixture of ore and water (called pulp) in a conditioning tank. The flow rate and tank size are designed to give the minerals enough time to be activated.

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Flotation process for copper ores and copper

10/05/1977· A flotation process in which copper ores or copper converter slags are ground and firstly have added thereto benzotriazole or alkyl benzotriazole as an activator and secondly one or more collectors selected from the group consisting of xanthates dithiophosphates thiocarbamate esters dithiocarbamates mercaptans and dixanthogens

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Concentration of ore by flotation with solutions of

09/08/1977· A process for flotation of copper sulfide values from copper bearing ores wherein a collector that comprises an aqueous solution of a salt of a dialkyl thiophosphate and an N alkyl O alkyl thionocarba Concentration of ore by flotation with solutions of aqueous dithiophosphates and thionocarbamate as collector

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Flotation Reagent Chemical Froth Collectors

Used as the collector for the flotation of non ferrous metal mineral which need strong collector but no selectivity. It is a good collector for the flotation of oxidized sulfide ore or copper oxide and zinc oxide (vulcanized by the sulfiding agent)as well as copper nickel sulfide ores and gold bearing pyrite ores

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Modified reagent mode in porphyry copper

Test data on the selective reagent modes at bulk flotation cycle and modified carboxymethylcellulose (CMC) at a selection cycle for the bulk copper molybdenum concentrate. The selected reagent mode at a bulk flotation cycle with industrial kerosene and Beraflot as collectors and OPSB as a frother made it possible to recover 87 % of copper and

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Flotation of a copper sulphide ore from Okiep using thiol

dithiophosphates dithiocarbamates and mixtures of these on the froth flotation performance obtained with a bornite rich copper sulphide ore from Okiep Copper Mine with a feed grade of 1.8% copper. Batch flotation tests were used to assess the performance in terms of mass water recovery sulphur grade recovery and copper

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Evaluation of flotation collectors for copper

Evaluation of flotation collectors for copper sulfides and pyrite I. Common sulfhydryl collectors. values represent the usual range of industrial practice while the former would be a desirable pH if lime additions to copper ore flotation pulps are to be minimized in practice.

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CA2056119C Sequential and selective flotation of

A sequential flotation process for the separation of components of an ore containing sulfides of copper and molybdenum invol~~es initially effecting selective flotation of the copper component directly from the ore by conditioning the ore with a combination of a source of bisulfate ion and causticized starch to produce a conditioned ore having

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Flotation of Copper Sulfide Ores ResearchGate

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Molybdenum Ore Processing by Flotation

Metallurgical ContentThe Molybdenum Process FlowsheetGrindingCoarse Flotation CircuitRegrind CircuitFine Flotation CircuitConcentrate TreatmentTailingsFlotation of Molybdenite from Copper This molybdenum flotation circuit based on 250 500 tons per 24 hours is designed for low grade molybdenum ore having high grade streaks and with pyrite

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INVESTIGATION OF EFFECTIVE PARAMETERS FOR MOLYBDENITE

factors on the flotation of molybdenum and copper. Flotation of porphyry coppermolybdenum ores (theoretical considerations) Molybdenite bearing copper sulphide ores are typically beneficiated by froth flotation techniques in two stages. The first stage commonly known as the copper circuit produces a bulk copper sulphide molybdenum sulphide

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Modified reagent mode in porphyry copper

Test data on the selective reagent modes at bulk flotation cycle and modified carboxymethylcellulose (CMC) at a selection cycle for the bulk copper molybdenum concentrate. The selected reagent mode at a bulk flotation cycle with industrial kerosene and Beraflot as collectors and OPSB as a frother made it possible to recover 87 % of copper and 82 % of molybdenum into a rough bulk concentrate.

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Brief Introduction of Dithiophosphate

With this property dithiophosphate can be used for flotation of other sulfide ore containing pyrite. For example using dithiophosphate as collector of priority flotation in the copper and lead zinc sulfide ore contains high iron sulfide can obtain high quality concentrates.

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Flotation of mixed oxide sulphide copper cobalt

Bulk flotation experiments with Zambian copper cobalt sulphide ore showed superior flotation performance with improved kinetics when using Sodium Ethyl Xanthate (SEX) as a collector instead of a blend of alkyl dithiophosphate and thionocarbamate collectors with copper sulphides floating more rapidly than cobalt sulphides (Mainza et al. 1999).

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Flotation agent used for the sulfide ores flotation

In US 4699711 disclosed method of flotation of sulphide minerals using mostly cyanocarpum the tov short circuit substituted by alkyl. In WO 02/38277 discloses the use of mixtures of thionocarbamate and mercaptobenzthiazole as flotation reagents in flotation of sulfide ores in particular copper associated with molybdenum and gold.

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Collecting properties of diisobutyl

The authors experimentally compared collecting properties of diisobutyl dithiophosphinate (DDP) butyl and isobutyl xanthate and diisobutyl and dibutyl dithiophosphate relative to pyrite chalcopyrite and other sulfides. It was found that pyrite adsorption grew in nonfrothing flotation with all the listed collecting agents.

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