— Spent HDS catalyst is an important secondary resource for extracting molybdenum. This study aimed to introduce a comprehensive process for separating and recovering molybdenum from the roasted spent HDS catalysts. The brief flow of the novel technology contains pressure Na2CO3 liquor leaching, selective extraction of …

 — Extraction of molybdenum (Mo) from jordisite is difficult due to the amorphous state of MoS2. In this study, mechanical activation was employed to pretreat this type of ore with a low Mo content ...

 — The extraction of molybdenum and nickel from Ni-Mo ore was attempted using oxidation complexation acid leaching. The effects of leaching temperature, leaching time, concentration of sodium chlorate and hydrochloric acid as well as sodium dihydrogen phosphate on the leaching of nickel and molybdenum were investigated.

 — Highlights Selective extraction of molybdenum with Cyanex-272 and TBP is achieved. The ability for extraction of Mo was D2EHPA < EHEHPA < Cyanex-272. TBP as co-solvent, it is synergism for Mo and the synergistic coefficient is 4.4. The separation factors were β Mo/Fe = 1803.61, β Mo/As = 480.09 and β Mo/V = 103.22.

 — In this paper, the solvent extraction of molybdenum from 0.01-1 M aqueous hydrochloric acidusing tri-octyl phosphine oxide (TOPO) as solvent diluted with n-hexane has been investigated.

 — Molybdenum metallurgy is the technology for extracting metal molybdenum from molybdenum-containing ore raw materials. The molybdenite (MoS 2) has been …

 — The extraction of molybdenum and nickel from Ni-Mo ore was attempted using oxidation complexation acid leaching. The effects of leaching temperature, leaching time, concentration of sodium chlorate and hydrochloric acid as well as sodium dihydrogen phosphate on the leaching of nickel and molybdenum were investigated.

 — In China, Ni–Mo ore is an important source of molybdenum and nickel, which... Skip to Main Content. Browse; Search. Close search ... The results indicated that the extraction of molybdenum can reach more than 88% using a solvent extraction system consisting of 10 vol.-% N235 and 10 vol.-% sec-octyl alcohol in sulphonated kerosene …

 — 55–60% of molybdenum is a by-product or co-product of porphyry copper ore extraction. Porphyry copper ore accounts for 60% of world copper production (USGS, 2014a). ... The annual molybdenum extraction in Fig. 2 would have to decrease from 392 kt to somewhere between 60 and 240 kt. In the following sections we will discuss to what …

 — Y hydrometallurgy Hydrometallurgy 47 (1997) 57-67 Acidic organophosphorus solvent extraction process for the purification of molybdenum in tailings from uranium ore treatment Cecile Bras sier-Lecarme a, Pascal Baron a*, Jean Louis Chevalier b, Charles Madic a ' Centre d'Etudes de la uall du Rhe, Marcoule, BP 171, …

 — The results indicate that P204 (D2EHPA) is an effective extractant for the extraction of molybdenum. The extraction of Mo is more than 90 % at pH of 0.5, contact time of 10 min, and organic-to ...

 — New in this paper are (1) an underpinned estimate of the remaining lifetime of molybdenum resources if no measures are taken, (2) a suggested extraction rate of …

 — ABSTRACT Tertiary amine N235 diluted with sulphonated kerosene containing sec-octyl alcohol as a phase modifier was used to directly extract molybdenum from the acidic leach solution of Ni–Mo ore. The results indicated that the extraction of molybdenum can reach more than 88% using a solvent extraction system consisting of …

 — Molybdenum contamination dispersion from mining site to a reservoir. ... sequential extraction (Larner et al., 2006, Pueyo et al., ... (including lead ore, zinc ore, gold ore and iron ore) have been identified in the region, and there are more than 180 mineral producing areas.

 — Wang et al. (2013a) studied an oxygen pressure leaching of nickel and molybdenum from a nickel-molybdenum ore. The extraction rates of nickel and molybdenum were 97% and 76% respectively under those optimum conditions: without sulfuric acid, leaching time of 5 h, leaching temperature of 150 °C, liquid-to-solid ratio of 2.0 mL/g, …

 — Molybdenum in the Ni–Mo ore was leached by air oxidation in an alkaline solution. Due to the high concentrations of SO 4 2−, S 2 O 3 2−, SO 3 2− and AsO 4 3− in the solution, it was difficult to efficiently extract Mo by chemical precipitation or ion exchange process. So the extraction of Mo from the solution with the mixture of tertiary amine (N …

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 viability of the mine …

 — The technique was applied to calculate the optimal grinding size of copper–molybdenum ore at the Erdenet factory. This made it possible to correct the value of the optimal content of the finished size class and, at the same time, to increase the extraction of copper and molybdenum into the concentrate by 0.8%–1.3% [15,16].

 — The main useful mineral in single molybdenum ore is molybdenite, which can be extracted directly by the flotation process after crushing and grinding. And the main useful minerals in the copper …

 — Extraction of molybdenum (Mo) from jordisite is difficult due to the amorphous state of MoS2. In this study, mechanical activation was employed to pretreat this type of ore with a low Mo content ...

The small amount of lead in the mixed ore exists in the form of PbS, and the chemical beneficiation process for molybdenite-bismuthinite mixed ore is leaching in hydrochloric acid solution.The mineral properties of galena and bismuthinite are extremely similar, and in the chemical beneficiation leaching process, lead and bismuth can be leached synchronously.

 — In addition, the ore-forming fluids for the Dabie-type molybdenum deposits are characterized by high proportions of CO 2, and primary fluid inclusion assemblages containing coexisting CO 2 vapor ...

Molybdenum metallurgy is the technology for extracting metal molybdenum from molybdenum-containing ore raw materials. The molybdenite (MoS2) has been used …

Ball or rod mills crush and grind the mined ore to fine particles, releasing molybdenite from the gangue (worthless rock). ... followed by the removal of impurities by precipitation and filtration and/or solvent extraction. The resulting ammonium molybdate solution is then converted to any one of a number of molybdate products by ...

Molybdenum processing - Alloys, Extraction, Applications: Ferromolybdenum accounts for about one-third of the total molybdenum consumption. Molybdenum in its pure metallic …

 — Several methods have been extensively reviewed for molybdenum separation and purification from solution which are potentially applicable to leach …

Molybdenum and copper-molybdenum porphyries are mined by open-pit or by underground methods. Once the ore has been crushed and ground, the metallic minerals are then separated from gangue minerals (or the …

 — An oxime extractant of HBL101 was used to directly extract molybdenum (VI) from a strong acid leach solution of Ni–Mo ore. The organic system was optimized in terms of its organic composition and the conditions of extraction and stripping and further characterized in terms of the extraction and stripping kinetics and distribution isotherms …

 — The object of research was copper–molybdenum ore containing 0.43% copper and 0.0089% molybdenum. ... the collective Cu–Mo concentrate was produced with the copper content of 16.25% with an ...

 — The technology of molybdenum extraction from molybdenite concentrate by using sodium chlorate has been investigated. The results show that leaching time, liquid-to-solid ratio, leaching temperature, agitation speed, sodium chlorate and hydrochloric acid concentration have significant effect; optimum process operating parameters were …