process for the production of tantalum niobium concentrates

Process For The Production Of Tantalum Niobium Concentrates

US5573572A - Process for the production of …

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 …

process for the production of tantalum niobium …

process for the production of tantalum niobium concentrates. A new process for the separation of tantalum from niobium - MIT A new process for the separation of tantalum , 2011 In niobium concentrate production process, tantalum processing - smartspectororg , it is particularly important to minimize the production , Process for upgrading ...

process for the production of tantalum niobium …

Process for obtaining tantalum or niobium metallic , 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 ...

Process for the production of tantalum-niobium ...

12-11-1996 · 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 resmelting.

Process for the production of a tantalum and …

19-10-1977 · 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

process for the production of tantalum niobium …

processing plant for tantalum concentrate. 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 .

US4211754A - Process for the production of a …

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 ...

process for the production of tantalum niobium …

A Review of Niobium-Tantalum Separation in Hydrometallurgy , One of the simplest methods for the breakdown treatment of primary concentrates of niobium and tantalum, particularly pyrochlore and columbite-tantalite, is direct reduction with aluminum , iron oxide, aluminothermic process is used for the production of niobium Further .

Processing: extraction and refining - Tantalum

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.

Tantalum and Niobium production - PROMETIA

Tantalum and Niobium production State of the art REFRAM - Final Conference ... Electron-microphotograph of a tantalum ore concentrate from Rwanda consisting of around 30 % coltan minerals (Source: ... Low grade slags are generally upgraded by a pyrometallurgical process, involving the production of ferroalloy ...

tantalum and niobium process - jessika-atelier.nl

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 ,

Process for the production of a tantalum and …

8-7-1980 · 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 ...

niobium processing | History, Ores, Mining, & …

12-12-2019 · Columbite concentrates and tin slags with a high tantalum content (greater than 10 percent) are directly dressed in most cases by a wet stone process. Low-tantalum tin slags, on the other hand, are first melted in an electric-arc furnace with the addition of a flux material, and the tantalum-niobium content is collected as a ferroalloy.

Process for the production of a tantalum and …

The present invention relates to 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, in which process the ferro-alloy is treated in molten state with a controlled amount of an oxidizing agent in order to slag at least most of the ...

Tantalum And Niobium

Conversion of niobium-bearing raw material into alloys metal, and compounds can be accomplished by a number of different routes. Until recently, pyrochlore concentrates have been used solely in the manufacture of ferro-niobium for steelmaking, using a process …

Development of a process for the concentration …

Most of the niobium production is marketed as ferro-niobium, which is utilized to manufacture high-grade steels and alloys (super alloys) (Schwela, 2010). On the other hand, Australia and Brazil accounted for more than 60% of the total production of tantalum in 2008 .

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