Process for the production of a tantalum and niobium bearing ...
A tantalum and niobium bearing concentrate is produced from a tantalum and niobium bearing ferro-alloy, containing tantalum and niobium as c Trigger Patent Buddy
A tantalum and niobium bearing concentrate is produced from a tantalum and niobium bearing ferro-alloy, containing tantalum and niobium as c Trigger Patent Buddy
In a process for the production of a tantalum and niobium bearing concentrate from a tantalum and niobium bearing ferro-alloy containing tantalum and niobium as carbide, by treating the ferro-alloy in molten state with a controlled amount of an oxidizing agent in order to slag at least most of the tantalum and at least part of the niobium and by separting the so …
A tantalum and niobium bearing concentrate is produced from a tantalum and niobium bearing ferro-alloy, containing tantalum and niobium as carbide, by treating the ferro-alloy in molten state with a controlled amount of an oxidizing agent such as oxygen in order to slag tantalum and niobium, and by separating the so obtained slag phase from the metal phase.
US-4211754-A chemical patent summary.
Process for the production of tantalum-niobium concentrates from low-tantalum, high-niobium raw materials with an Nb.sub.2 O.sub.5 /Ta.sub.2 O.sub.5 ratio of 5 to 15 in a pyrometallurgical concentration process by smelting with carbon-containing reducing agents, reductions and resmelting.
Tantalum and Niobium production State of the art REFRAM - Final Conference Brussels, 9-10 March 2017 ... extraction of Ta Typical recovery using modern process techniques: 90% (Tanco Mine, Manitoba, Canada) ... Electron-microphotograph of a tantalum ore concentrate from Rwanda consisting of around 30 % coltan minerals (Source: BGR:
The U.S. Department of Energy's Office of Scientific and Technical Information
Process for the production of a tantalum and . ... Abstract. Methods for processing tantalum-niobium ores and synthetic tantalum-niobium concentrates for separating tantalum and niobium are discussed.Get Quotes. Patent CA2849787A1 - Process for upgrading .
In Echassieres the main tantalum and niobium bearing minerals are microlite and tantalocolumbite. Concentrates of Golpejas and Penouta contain columbo tantalite. Up to 15% of the total tantalum and niobium content of these concentrates are present in the cassiterite as microinclusions and can not be recovered by the mineral processing.
Niobium-tantalum concentrates Tin slags account for a sizeable fraction of the world s tantalum production.These slags are melted in electric arc furnaces, together with coke and lime (as flux), and this pyrometallurgical process leads to the production of synthetic niobium/tantalum concentrates. The waste products of this operation are mechanically …
The final concentrate contains 46% tantalum niobium and 5-6% tin, and the recovery rate is 86%. We also use this beneficiation process of tantalum niobium tin ore for our Rwanda customers, 51% tantalum and niobium, 7.1% tin, and 79% recovery are obtained, it creates huge profits for our customers. Forui has provided tantalum and niobium ore ...
Tantalum smelting method Tantalum smelting process. Tantalum niobium ore is the main raw material for the production of tantalum, but it is often associated with a variety of metal, so the main step is the decomposition of tantalum smelting concentrates, purification and separation of tantalum and niobium, produced pure compound of tantalum and niobium, finally, we can …
The tantalum-niobium concentrate is obtained by a dry high-intensity magnetic separator after a rough sweep. 69.92% (Ta2O5 recovery rate 69.071%), select operation recovery rate 94.11%. 3. Flotation of fine-grained tantalum-niobium ore. Jiangxi Dajishan Tungsten Mine No. 69 ore body is a large tantalum-niobium-tungsten-tungsten granite ore body.
Process for the production of tantalum-niobium concentrates from low-tantalum, high-niobium raw materials with an Nb 2 O 5 /Ta 2 O 5 ratio of 5 to 15 in a pyrometallurgical concentration process by smelting with carbon-containing reducing agents, reductions and …
A tantalum and niobium bearing concentrate is produced from a tantalum and niobium bearing ferro-alloy, containing tantalum and niobium as carbide, by treating the ferro-alloy in molten state with a controlled amount of an oxidizing agent such as oxygen in order to slag tantalum and niobium, and by separating the so obtained slag phase from the metal phase.
Processing: extraction and refining. The extraction and refining of tantalum, including the separation from niobium in these various tantalum-containing mineral concentrates, is generally accomplished by treating the ores with a mixture of hydrofluoric and sulfuric acids at elevated temperatures. This causes the tantalum and niobium values to ...
In a process for the production of a tantalum and niobium bearing concentrate from a tantalum and niobium bearing ferro-alloy containing tantalum and niobium as carbide, by treating the ferro-alloy in molten state with a controlled amount of an oxidizing agent in order to slag at least most of the tantalum and at least part of the niobium and by separting the so …
Process for the production of niobium-tantalum concentrates with high-tantalum content relative to niobium from low-tantalum, high-niobium raw materials with an Nb2O5/Ta2O5 ratio of 5 to 15, and a multiple metals content in the form of oxides of the metals including iron oxide content in excell of 4 wt-%, in a pyrometallurgical process comprising the steps of: (a) …
In a process for producing tantalum concentrates from ores containing tantalum oxides, tantalic acid or its salts together with rutile type titanium dioxide in mixed crystals, the ores are treated in a sulfuric acid of a concentration not lower than 50% by weight with heating at a temperature from 200.degree. C. to the boiling point of said sulfuric acid, and then the above …
Niobium-tantalum concentrates processing Tin slags account for a sizeable fraction of the world s tantalum production.These slags are melted in electric arc furnaces, together with coke and lime (as flux), and this pyrometallurgical process leads to the production of synthetic niobium/tantalum concentrates.The waste products of this operation are mechanically …
A fusion electrolysis process for production of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W from their chlorides is presented. In an example of the process, equal weights of NaF and NaCl were fused and 3.65 parts of TaCl/sub 5/ are added. Electrolysis at 4 v …
We claim: 1. In a process for the production of a tantalum and niobium bearing concentrate from a tantalum and niobium bearing ferro-alloy containing tantalum and niobium as carbide, by treating the ferro-alloy in molten state with a controlled amount of an oxidizing agent in order to slag at least most of the tantalum and at least part of the niobium and by separating the so …
Methods for processing tantalum-niobium ores and synthetic tantalum-niobium concentrates for separating tantalum and niobium are discussed. For the production of tantalum and niobium compounds such as oxides, chlorides, carbides and metals a variety of different processes have been developed.
CBMM has installed capacity for the production of a high purity oxide that can be used to produce vacuum grade ferro- and nickel-niobium as well as niobium metal ingots via electron beam refining. The use of columbite and tantalum-bearing ores, such as tantalite, as feedstocks results in the necessity to process these materials chemically as ...
tantalum refining process pdf green toolingeuWhere is Tantalum Mined TIC. Tantalum is the metallic element extracted or refined from primary and placer tantalum mineral process of cassiterite ore concentrates Schwela September Tantalum Niobium International Study CenterTantalum mineral concentrates may contain from two to more than five different …
In a process for the production of a tantalum and niobium bearing concentrate from a tantalum and niobium bearing ferro alloy containing tantalum and niobium as carbide by treating the ferro alloy in molten state with a controlled deposits tantalum appears in solid solution with niobium in complex oxides which forms low grade aggregates which ...
A tantalum and niobium bearing concentrate is produced from a tantalum and niobium bearing ferro-alloy, containing tantalum and niobium as carbide, by treating the ferro-alloy in molten state with a controlled amount of an oxidizing agent such as oxygen in order to slag tantalum and niobium, and by separating the so obtained slag phase from the metal phase.
studied and optimized the process of the production of niobium and tantalum nanopowders (adjusted in the range of the particle size of 20–150 nm) at pilot scale. The process is based on the reduction reaction of pentachlorides of tantalum and niobium with .
We claim: 1. Process for the production of niobium-tantalum concentrates with high-tantalum content relative to niobium from low-tantalum, high-niobium raw materials with an Nb 2 O 5 /Ta 2 O 5 ratio of 5 to 15, and a multiple metals content in the form of oxides of the metals including iron oxide content in excell of 4 wt-%, in a pyrometallurgical process comprising the …
A tantalum and niobium bearing concentrate is produced from a tantalum and niobium bearing, Process for the production of a tantalum and niobium bearing .... Tantalum and Niobium Columbium 2017 World Market, - Know More
Process for the production of a tantalum and niobium bearing concentrate from a tantalum and niobium bearing ferro-alloy