molybdenite sample processed in flotation plants Further, Hirajima et al  did not distinguish the effect of Ca2+ on the property of molybdenite edges and fac In China, the major molybdenum plants—including those located at Jinduicheng and Luanchuan use sequential flotation, instead of bulk flotation, to recover molybdenite In this case.
May 11, 1982· Molybdenite is recovered by froth flotation of ore or concentrate by use of thio carboxylic acid compound and activated carbon to depress copper ,
flotation rate constant responds to second-order kinetics model with correlation coefficient of 099 At the end of the multi stage flotation test performed under the optimum flotation parameters, Mo recovery and content for final concentrate were found as 723% and 5215%, respectively
Recovery of Roasting-Molybdenite Concentrate by Froth Flotation Article in Korean Journal of Materials Research 19(12):661-666 December 2009 with 30 Reads How we measure 'reads'
The flotation process of molybdenum ore from Liaoning in China with a new collector DMC is investigated The results show that the collector DMC has stronger collecting power and better selectivity for molybdenite Compared with traditional kerosene and xanthate flotation,this process using the new collector could have a good index with 60% sodium silicate
US2957576A US719708A US71970858A US2957576A US 2957576 A US2957576 A US 2957576A US 719708 A US719708 A US 719708A US 71970858 A US71970858 A US 71970858A US 2957576 A US2957576 A US 2957576A Authority US United States Prior art keywords concentrate flotation molybdenite percent sulfide Prior art date 1958-03-07 Legal status (The legal status is an ,
May 21, 1974· 1 In a process for the separation of molybdenite from copper concentrates obtained by froth flotation in the presence of an organic collector, the improvement whereby the molybdenite is recovered in a more concentrated form comprising:
Table of ContentsMolybdenite Extraction Plant Molybdenite Plant Feed ThickenerCyanide Leach CircuitFuel Oil for Molybdenite FlotationDifferential Flotation Process for Recovery of Molybdenite from Copper Concentrates Factors Directly Affecting Molybdenite Flotation: The average molybdenite recovery in the copper concentrator for the first nine months of 1980 was 6713% In recent months, ,
A study of mechanisms affecting molybdenite recovery in a bulk copper/molybdenum flotation circuit, International Journal of Mineral Processing, 93(3-4),256-266 (2009) and the PhD Thesis of Lin Zhou (University of South Australia)
US2664199A US306638A US30663852A US2664199A US 2664199 A US2664199 A US 2664199A US 306638 A US306638 A US 306638A US 30663852 A US30663852 A US 30663852A US 2664199 A US2664199 A US 2664199A Authority US United States Prior art keywords concentrate molybdenite flotation copper iron Prior art date 1952-08-27 Legal status (The legal status is an assumption and is ,
Molybdenum production: the innovation pathways 910 March, 2017 Lena Sundqvist Ökvist, 1 Innovation potential in mineral processing o Oil agglomerate flotation process to recover molybdenite from ultrafine waste tailings o Dispersionselective hydrophobique floculation to High processing capacity, but also high energy consumption Get Price
recovery of molybdenite and copper were investigated Molybdenite recovery in the bulk flotation circuit was consistently lower than that of the copper sulphides as well as being far more variable This paper describes the methodically use of size by size recovery data, ,
The recovery of molybdenite as a low-concentration product presents little difficulty, but considerable difficulty has been experienced in obtaining a high purity molybdenite concentrate by any hitherto-suggested procedure, without loss of an important percentage of the mineral in the recovery process
Dec 01, 2012· Read "Recovering molybdenite from ultrafine waste tailings by oil agglomerate flotation, Minerals Engineering" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips
preferential Mo flotation followed by Cu flotation, which usually requires large reagent dosages and complex flowsheet  LIU et al  reported that the preferential Mo flotation approach using a non-thiol collector was superior to bulk flotation process in improving the recovery of molybdenite from Dexing Cu−Mo ore Their
of oxide minerals Advances in flotation reagents can make the recovery of oxides by flotation a more effective and economic process Grinding and surface chemistry are critical to the success of oxide flotation Over-grinding of the brittle minerals is avoided by stage grinding and careful selection of equipment We have experience in diverse .
Jan 15, 1974· A process for recovering molybdenite from a metallurgical concentrate comprising a major proportion of copper sulfide and other sulfides and a minor portion of molybdenum sulfide is provided, in which the copper and other sulfides are selectively depressed by employing a mixed thiol-alcohol thereby enabling the molybdenite to be recovered by flotation
S consumption from 16kg/t to 6kg/t at a constant metallurgical efficiency in rougher flotation In such a condition, the recovery of 9288% and the separation efficiency of 9003% were achieved in flotation of molybdenite, comprising only 3% of copper minerals
A process for recovering molybdenite from feed materials containing copper sulfide and molybdenite (eg copper/molybdenum concentrates from flotation processes) wherein the feed material is treated with ozone and then floated to recover molybdenite
Investigations were conducted to characterize the surface chemical and flotation properties of molybdenite in aqueous environments typical of those that exist in the copper circuits of plants that process prophyry copper or , Flotation Recovery of Molybdenite from Porphyry Copper Or , properties of molybdenite in aqueous environments .
This paper aims to understand the fundamental interaction mechanism between molybdenite and kaolinite in gypsum solution using kerosene as collector Micro-flotation tests were conducted to study the effect of gypsum solution on the flotation performance of mixed −74 μm molybdenite and −10 μm kaolinite mineral The results showed that the recovery of molybdenite decreased from 86% to 74% .
Molybdenite (MoS 2) is a naturally hydrophobic mineral with anisotropic surface propertiIts floatability is influenced by a number of factors such as, particle size and shape, face/edge ratio, degree of crystallization, face heterogeneity, pH, etc Molybdenite is floated by using oily collectors, and its recovery is strongly affected by slime coating phenomena
Dec 20, 2019· Molybdenite was slightly oxidized during thermal pretreatment and could be easily recovered in the flotation process All in all, the above results imply that thermal pretreatment is a high potential method to be used as an alternative to depressant in the practical molybdenite-chalcopyrite flotation separation process
The milled ore/gangue powder is mixed with a liquid and aerated in the flotation step The less dense ore rises in the froth to be collected, while the gangue sinks to be discarded Flotation separates the metallic minerals from the gangue this way and – in the case of copper/ molybdenum ores – separates molybdenite from copper sulphide
Typically, rougher molybdenite flotation and recovery from bulk copper/molybdenum concentrates involves the use of alkalisulfides, Nokes reagents, cyanides, oxidants, and/or thermal treatment to depress copper sulfide minerals The bulk copper/molybdenum feed generally varies from 02% Mo to 10% Mo, and with traditional reagents the single-stage rougher flotation recovery of molybdenite .
A method is provided for treating molybdenum concentrates in a roasting furnace having a first roasting zone and at least a second roasting zone, the concentrate containing residual flotation oil in an amount over 2% by weight which during roasting inhibits the roasting capacity of the furnace The improvement resides in deoiling the molybdenite concentrate, feeding the deoiled concentrate to .
The flotation process is commonly used in Brazil for the recovery of molybdenite from emerald mining tailings, but it produces low-content molybdenite concentrates, thereby resulting in a product with low economic value The molybdenite concentrate produced ,
Processing copper-porphyritic ore , the copper sulfides and other sulfides are suppressed and the molybdenite could be recovered by flotation with non-polar (hydrocarbonic) collectors , The use of more efficient flotation reagents could make the process cheaper by reducing the number of flotation cycles; then projects with marginal copper .
A study of mechanisms affecting molybdenite recovery in a bulk copper/molybdenum flotation circuit Article in International Journal of Mineral Processing 93(3-4):256-266 December 2009 with 163 .
or Misreported pyrite into copper concentrates decreased the grade and recovery of copper In this study, the effective parameters on the flotation process including grinding condition and chemical parameters were evaluated in order to decrease the active pyrite recovery by flotation Firstly, optical