vanadium recovery process and coal
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vanadium recovery process and coal

Vanadium recovery from stone coal through roasting and ...

2017-1-19  vanadium of stone coal, vanadium extraction from stone coal is commonly confronted with the problems of enormous ore handling quantity, high acid consumption and high production cost [7]. For the sake of relieving these problems, pre-concentration of vanadium in stone coal before leaching is an effective method.

Recovery of vanadium from stone coal acid leaching ...

2012-4-1  The recovery of vanadium from stone coal acid leaching solution by coprecipitation, alkaline roasting and water leaching was studied. A method used to recover vanadium from stone coal acid leaching solution was developed, and it primarily included vanadium coprecipitation with iron in the solution, vanadium extraction by alkaline leaching from the precipitate, and vanadium pentoxide ...

Mechanisms of Vanadium Recovery from Stone Coal

In this report, the vanadium recovery mechanisms by novel BaCO3/CaO composite additive roasting and acid leaching technology, including the phase transformations and the vanadium leaching kinetics, were studied. The purpose of this manuscript is to realize and improve the vanadium recovery from stone coal

Flotation recovery of vanadium from low-grade stone coal

2014-5-6  extracting process is an effective method to raise the grade of metal and further reduce production cost. ZHAO et al [12] used gravity separation to pre-concentrate vanadium from stone coal. Even though only 9.7% vanadium was lost by this method, the yield of tailing was low and only accounted for 28.9% of the feed ore.

Vanadium Recovery from Oil Fly Ash by Carbon Removal

2020-10-19  product could be obtained for the further vanadium recovery process. Therefore, 10 g of the oil fly ash C for 4 h. After the carbon removal process, the vanadium concentration in the sample was increased from Fig. 1. Proposed flow sheet of vanadium extraction. Vanadium Recovery from Oil Fly Ash by Carbon Removal and Roast-Leach Process 169

Recovery Of Vanadium From Coal Fly Ash - Sunview

Us7871583b2 Recovery Of Vanadium From Coal Fly Ash. A process for recovery of silica and alumina from fly ash in which Si is leached out from the fly ash in the form of Na 2 SiO 3 using a NaOH solution of NaOH 40 ww followed by separation to obtain a Na 2 SiO 3 solution and a residue having AlSi ratio 2 vaporiing the solution to obtain Na 2 SiO ...

Vanadium Transitions during Roasting-Leaching Process

2018-2-12  For the process of vanadium extraction from stone coal, the vanadium recovery by the roasting-leaching procedure is around 65–75%, while for other procedures, such as ion exchange, solvent extraction, and vanadium precipitation, the vanadium recoveries are more than 97% [9,10]. Therefore, the total vanadium recovery depends on the vanadium

(PDF) A review of processing technologies for

2018-8-1  The possibility of extraction of vanadium from various sources such as vanadiumbearing shales [15], lignite ash [16], stone coal [12, 17], and vanadium-titanium magnetite concentrate [18] are ...

Vanadium recovery from oil fly ash by leaching ...

2007-1-1  Though vanadium recovery was not complete from oil fly ash (with a 70% recovery level), the proposed procedure allowed an efficient, simple and complete recovery of vanadium (greater than 98%) from the leachate in the form of a pure product, that could be valorized. Improving the process would consist in increasing vanadium leaching efficiency.

Recovery and Separation of Vanadium and Chromium

2020-3-5  This paper focused on the treatment of vanadium–chromium reducing residue with a two-step alkaline leaching process: electro-oxidation leaching of vanadium and H2O2 as well as oxidation leaching of chromium in an alkaline medium. The effects of experimental parameters on the leaching performance of vanadium and chromium were investigated. The experimental data showed that in the first ...

Vanadium recovery from stone coal through roasting and ...

2017-1-19  vanadium of stone coal, vanadium extraction from stone coal is commonly confronted with the problems of enormous ore handling quantity, high acid consumption and high production cost [7]. For the sake of relieving these problems, pre-concentration of vanadium in stone coal before leaching is an effective method.

A new process for the recovery of iron, vanadium, and ...

2014-7-3  A new process for the recovery of iron, vanadium, and titanium Coal is used as reductant. The chemical analysis of the coal is listed in Table I, which shows that the coal is high in fixed carbon (FC), and low in ash (Aad) and total sulphur (Std). AApparatus and procedure Figure 3 shows the schematic diagram of the experiment

Vanadium Recovery from Oil Fly Ash by Carbon Removal

2020-10-19  Vanadium Recovery from Oil Fly Ash by Carbon Removal and Roast-Leach Process MYUNGWON JUNG1 and BRAJENDRA MISHRA1,2 1.—Center for Resource Recovery and Recycling, Worcester Polytechnic Institute, Worcester, MA, USA. 2.—e-mail: [email protected] This research mainly focuses on the recovery of vanadium from oil fly ash by

Phase transformations of vanadium recovery from

In this study, a novel NaOH molten roasting and water leaching technology, an eco-friendly process with good selectivity and good availability, was investigated for vanadium recovery from refractory stone coal. In addition, the phase transformations during the vanadium recovery process

Flotation recovery of vanadium from low-grade stone coal

2014-5-6  extracting process is an effective method to raise the grade of metal and further reduce production cost. ZHAO et al [12] used gravity separation to pre-concentrate vanadium from stone coal. Even though only 9.7% vanadium was lost by this method, the yield of tailing was low and only accounted for 28.9% of the feed ore.

Recovery Of Vanadium From Coal Fly Ash - Sunview

Us7871583b2 Recovery Of Vanadium From Coal Fly Ash. A process for recovery of silica and alumina from fly ash in which Si is leached out from the fly ash in the form of Na 2 SiO 3 using a NaOH solution of NaOH 40 ww followed by separation to obtain a Na 2 SiO 3 solution and a residue having AlSi ratio 2 vaporiing the solution to obtain Na 2 SiO ...

Successive recovery of vanadium and uranium from

The vanadium leaching process from stone coal was reviewed, including its leaching condition, application circs and its respective merits and faults. ... The recovery of vanadium from stone coal ...

A review of processing technologies for vanadium ...

2020-11-24  Due to the poor vanadium recovery of mineral processing, the extraction of vanadium from stone coal is directly carried out by metallurgical processes. Salt process, acid process and alkali process three types of stone coal leaching including nine technologies are introduced.

Vanadium Recovery from Oil Fly Ash by Carbon

This research mainly focuses on the recovery of vanadium from oil fly ash by carbon removal and the roast-leach process. The oil fly ash contained about 85% unburned carbon and 2.2% vanadium by weight. A vanadium-enriched product was obtained after carbon removal, and the vanadium content of this product was 19% by weight. Next, the vanadium-enriched product was roasted with sodium

Recovery and Separation of Vanadium and Chromium

2020-3-5  This paper focused on the treatment of vanadium–chromium reducing residue with a two-step alkaline leaching process: electro-oxidation leaching of vanadium and H2O2 as well as oxidation leaching of chromium in an alkaline medium. The effects of experimental parameters on the leaching performance of vanadium and chromium were investigated. The experimental data showed that in the first ...

Vanadium recovery from stone coal through roasting and ...

2017-1-19  vanadium of stone coal, vanadium extraction from stone coal is commonly confronted with the problems of enormous ore handling quantity, high acid consumption and high production cost [7]. For the sake of relieving these problems, pre-concentration of vanadium in stone coal before leaching is an effective method.

Vanadium Recovery from Oil Fly Ash by Carbon Removal

2020-10-19  Vanadium Recovery from Oil Fly Ash by Carbon Removal and Roast-Leach Process MYUNGWON JUNG1 and BRAJENDRA MISHRA1,2 1.—Center for Resource Recovery and Recycling, Worcester Polytechnic Institute, Worcester, MA, USA. 2.—e-mail: [email protected] This research mainly focuses on the recovery of vanadium from oil fly ash by

A new process for the recovery of iron, vanadium, and ...

2014-7-3  A new process for the recovery of iron, vanadium, and titanium Coal is used as reductant. The chemical analysis of the coal is listed in Table I, which shows that the coal is high in fixed carbon (FC), and low in ash (Aad) and total sulphur (Std). AApparatus and procedure Figure 3 shows the schematic diagram of the experiment

Recovery Of Vanadium From Coal Fly Ash - Sunview

Us7871583b2 Recovery Of Vanadium From Coal Fly Ash. A process for recovery of silica and alumina from fly ash in which Si is leached out from the fly ash in the form of Na 2 SiO 3 using a NaOH solution of NaOH 40 ww followed by separation to obtain a Na 2 SiO 3 solution and a residue having AlSi ratio 2 vaporiing the solution to obtain Na 2 SiO ...

Calcified roasting-acid leaching process of vanadium from ...

2014-4-15  Abstract The low-grade vanadium-containing stone coal used in this experiment was collected from Wuxi Coun-try, Chongqing City, China. The experiment focused on the vanadium recovery from roasted residue through opti-mizing the process conditions of an effective and environmentally-friendly technology, named calcified roast-

Oxidative Leaching Kinetics of Vanadium from the

2020-4-7  In this report, the vanadium recovery mechanisms by novel BaCO♂/CaO composite additive roasting and acid leaching technol., including the phase transformations and the vanadium leaching kinetics, were studied. The purpose of this manuscript is to realize and improve the vanadium recovery from stone coal using BaCO♂/CaO as the composite ...

NEW PROCESS OF EXTRACTING VANADIUM FROM

2013-4-9  Vanadium, as one of the important rare elements, has been widely used in industrial production. The raw material for industrial production of vanadium consists of vanadium-titanium magnetite, oil ash, waste vanadium catalyst, bauxite and stone coal. In addition, 75% to 85% vanadium production was extracted from vanadium-titanium

Recovery and Separation of Vanadium and Chromium

2020-3-5  This paper focused on the treatment of vanadium–chromium reducing residue with a two-step alkaline leaching process: electro-oxidation leaching of vanadium and H2O2 as well as oxidation leaching of chromium in an alkaline medium. The effects of experimental parameters on the leaching performance of vanadium and chromium were investigated. The experimental data showed that in the first ...

Coextraction of vanadium and manganese from high ...

2020-5-25  Synergistic solvent extraction of vanadium from leaching solution of stone coal using D2EHPA and PC88A. Separation Science and Technology, 2017, 181: 1–7 16 H I Kim, G Moon, I Choi, J Y Lee, R K Jyothi. Hydrometallurgical process development for the

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