An effective flotation approach is proposed for improving the recovery of molybdenite fines from a finely-disseminated molybdenum ore. To maximize the flotation recovery of molybdenum, process mineralogy of raw ore, contrast tests, optimization of operation conditions and particle size analysis were systematically investigated. Process …
Abstract. A novel technology characterized by higher recovery of molybdenum and production of high value added ammonium molybdate was developed to recover molybdenum from low grade Ni–Mo ore. The brief flow of the novel technology includes roasting, Na 2 CO 3 and NaOH mixed alkali leaching, ion exchange enrichment …
molybdenum and copper contents in soil and vegetables [13, 14]. For comprehensive utilization of resource and avoiding the negative effect of molybdenum on human health, the oxygen pressure water leaching residue of Ni–Mo ore can be considered as a secondary source for molybdenum recovery. The aim of this article was to recover …
Molybdenum is a strategic metal in the industrial sector . In China, Ni–Mo ore is an important molybdenum source, which contains 0.17 %–7.03 % Ni and 0.35 %–8.17 % Mo . The traditional process for molybdenum recovery from Ni–Mo ore is roasting and melting reduction, producing a high-impurity Ni–Mo–Fe alloy.
Figure 1 illustrates a basic recovery flowsheet from a primary ore body. Climax now mines molybdenite ore averaging about 0.15% Mo; the Henderson ore averages 0.25% Mo. …
The effect of the agitation duration on the recovery of molybdenum was analyzed for S:L = 1:4, CNa 2CO3 = 250 g/ liter, T = 95 °C. Figure 5 demonstrates that the recovery of molybdenum increases as the leaching duration changes from 30 to 240 min. The recovery reaches the maximum (97%) for leaching durations of 120–180 min. Further …
Thus, much attention have been drawn to the recovery of molybdenum from low-grade molybdenum ores in recent years. With the increasingly stringent …
The other process can only extract molybdenum, and it also has the disadvantage of low recovery of molybdenum (<70%). In recent years, ... In Ni-Mo ore, molybdenum and nickel both mainly occur in the form of sulfide. A toxic gas of SO 2 is produced in roasting process. Much attention has thus been recently paid to the direct …
Domestic Production and Use: U.S. mine production of molybdenum in 2019 increased by 7% to 44,000 tons compared with the previous year. Molybdenum ore was produced as a primary product at two mines—both in Colorado—whereas seven copper mines (four in Arizona and one each in Montana, Nevada, and Utah) recovered molybdenite …
Ye Lijia conducted an experimental study on a low-grade copper-molybdenum ore in Anhui and found that when kerosene was used as a collector and BK301C was used as an auxiliary collector for copper-molybdenum mixing, the recovery rate of copper and molybdenum could reach 93.3 g/t at a dosage of 59 g/t, respectively. …
We developed a process including acid leaching, solvent extraction and stripping in order to recycle spent catalyst. In this study, we conducted selective …
A copper–molybdenum iso-flotability flotation process has been developed to efficiently improve the recovery of molybdenite from Duobaoshan porphyry Cu–Mo ores. The effects of flotation ...
Trans. Nonferrous Met. Soc. China 27(2017) 2260−2271 Recovery of molybdenum and copper from porphyry ore via iso-flotability flotation Qing-quan LIN1, Guo-hua GU1, Hui WANG2, You-cai LIU2, Chong ...
DOI: 10.1016/S1003-6326(17)60252-8 Corpus ID: 139994379; Recovery of molybdenum and copper from porphyry ore via iso-flotability flotation @article{Lin2017RecoveryOM, title={Recovery of molybdenum and copper from porphyry ore via iso-flotability flotation}, author={Qing-quan Lin and Guo-hua Gu and Hui Wang and You-cai Liu and …
A literature review of the recovery of molybdenum and vanadium from spent hydrodesulphurisation catalysts Part I: Metallurgical processes. Hydrometallurgy 98, 1–9 (2009). Article CAS Google Scholar
Conventionally, separation of copper and molybdenum (Cu-Mo) ores has been achieved with sulfide ore bulk flotation followed by selective molybdenum flotation with the addition of a copper sulfide ...
Molybdenum extraction from low-grade Ni–Mo ores was improved by mechanical activation. The recovery rate of molybdenum reached 96.3%. High purity …
This is an essay in the field of mineral processing engineering. A molybdenum mine in Henan Province belongs to the skarn type molybdenum mine, which has the characteristics of extremely fine embedded particle size and high mud mineral content, and the molybdenum has suffered poor recovery. This paper systematically …
Annual 1000 t U with recovery rate 94% and amounts of by-product raw Molybdenum (Mo 15%) is achieved by alkaline pressure leaching system for treating U–Mo associate ore conducted at Lodeve company of France. ... (2013) Extraction of molybdenum and nickel from Ni–Mo ore by pressure acid leaching. Trans Nonferrous …
With most high-quality tungsten ores being exhausted, the enhancement of low-grade scheelite concentrates processing has attracted a great deal of attention. The objective of this study is to develop a method to maximize the recovery tungsten and molybdenum from a low-grade scheelite via a new acid leaching process followed by …
Based on the minerals contained in ore bodies and their quality, molybdenum ore is divided into three categories: primary ore, the molybdenite recovery is the only goal; by-product ore, in which the recovery of copper ore is the main target, molybdenum recovery provides additional economic value; symbiotic product ore, the commercial …
A direct hydrometallurgical process for molybdenum extraction and recovery from a Ni–Mo ore is reported. The novel technology includes leaching molybdenum by air oxidation in alkaline solution,purifying the leach solution with freshly precipitated "nascent" Fe(OH) 3 and "buffer agent" NaHCO 3, enriching molybdenum by ion exchange and …
Thus, much attention have been drawn to the recovery of molybdenum from low-grade molybdenum ores in recent years. With the increasingly stringent environmental requirements, the shortcomings due to SO 2 emission in the roasting process of traditional technology becomes obvious. This review outlines metallurgical processes …
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-quartz gangue.It is also basically sound for many other friable sulphide ores, such as antimony, silver and even some lead ores. The basic ideas stressed in this moly flotation flowsheet …
To recover copper and molybdenum from their porphyry sulfide ores, several process flowsheets are applied, and two of them are shown in Fig. 1.[23, 24] As illustrated in Fig. 1 (a), [23, 25] the two-stage flotation flowsheet is the most widely adopted.In the first stage, copper and molybdenum sulfide concentrates are recovered …
The result shows that the grade of molybdenum ore concentrate is 45.31%, the recovery is 65.98% and the rich ore ratio reaches 20.59% by the regrinding and scrubbing seven cleaning, the regrinding of concentrations from middling of molybdenum-sulfur separation. The regularly-concentrated material from the apparatus was as the …
Recovery of Molybdenum with Sodium-Carbonate Solutions from Ore of the Yuzhno-Shameisky Deposit. Published: 16 November 2023. Volume 67, pages …
With the increasing demand of metal values and environmental awareness, catalysts can serve as a secondary source for metal recovery. Spent hydro-refining catalyst mainly consists of 10–20% MoO 3, 6–8% CaO, 0–12% V 2 O 5, 0.5–6% NiO, 10% S, 10–12% carbon and the balance is Al 2 O 3. The spent catalyst was roasted with soda …
Research on Molybdenum Leaching from Low Grade Lead-Molybdenum Rough Concentrate. Gao Zhao-guo. Materials Science. 2011. The molybdenum in lead concentrate (Mo content of 4.39%) mainly existed in forms of PbMO4.The sodium sulfide leaching process was adopted for oxidation molybdenum extraction.The leaching rate …
Using data on a number of other metals (Table 4) we assume a molybdenum recovery rate from primary molybdenum ore of about 80%. This leads to the conclusion that the overall recovery rate of molybdenum at production must currently be around …
Molybdenite recovery, on the contrary, may vary significantly from operation to operation, and also within different ore bodies in the same operation. Copper and molybdenum recovery data for a one year period of a typical porphyry copper flotation plant are reported in Fig. 1, showing high variability of molybdenum recovery with time.
Review of Molybdenum Recovery Processes. R. R. Dorner Climax Molybdenum Company. Climax, Colorado SUMMARY Our purpose in this paper is to review present moly- bdenum recovery processes from a historical viewpoint and to point out areas where research should be concen- trated. As in many mineral deposits, ore grades of …
processes for the separate recovery and refining of secondary molybdenum from its alloys. Molybdenum is not ... Molybdenum ore and concentrates, roasted 2613.10.0000 12.8¢/kg + 1.8% ad val. Molybdenum ore and concentrates, other 2613.90.0000 17.8¢/kg. Molybdenum chemicals:
We developed a process including acid leaching, solvent extraction and stripping in order to recycle spent catalyst. In this study, we conducted selective recovery of molybdenum through focus on finding an optimized extraction and stripping process by comparing different extractants and stripping agents. To separate molybdenum from …
Run-of-mine molybdenum ore was sorted using a dual energy X-ray transmission array. • Sorting thresholds permit optimization of Mo recovery and waste rejection. • Mo recoveries of 65.6–93.4% and waste rejection of 40.2–93.7% were achieved. • Two comminution circuits were proposed to evaluate ore sorting impact on operations. •
Abstract. A copper–molybdenum iso-flotability flotation process has been developed to efficiently improve the recovery of molybdenite from Duobaoshan porphyry Cu–Mo ores. The effects of flotation approach, type of collector, feed particle size distribution, rougher pH value and reagent dosage on the recovery of molybdenite were …