The production of metal vanadium

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Ore processing

Due to the low content of vanadium in the ores of all the process of obtaining this metal include the enrichment of the ore. Containing titanium magnetite ore is partially reduced with coal in rotary kilns and then melted in a furnace. This leads to the formation of slag (containing most of the titanium) and the iron containing a large part of the vanadium. After removal of slag from the iron is blown with oxygen with the formation of new slag, which already soderjit to 20…24% of pentoxide V₂ O₅,

The production of vanadium

Vanadium ore are crushed and mixed with chloride or sodium carbonate. The mixture is then heated to a temperature of about 850 °C for the conversion of the oxides to sodium metavanadate, which can leach into hot water. Upon acidification of the filtrate with sulfuric acid, the vanadium is precipitated in the form of hexavanadate sodium. This connection is fused at a temperature of 700 °C with obtaining 86% V₂ O₅ is Sometimes performed additional purification by dissolving the oxide in an aqueous solution of sodium carbonate. Vanadium is precipitated in the form of ammonium metavanadate by adding ammonium chloride. After filtration, the precipitate is calcined, getting the V₂ O₅ with a purity of more than 99.8%.

Metal smelting

Production of ferrovanadium, containing 35−80 percent V, is carried out in an electric arc furnace. Scrap iron are first melted and added to a mixture of V₂ O₅, alumina and flux is a fluoride or oxide of calcium. In a subsequent reaction the aluminium is converted into aluminium oxide, forming a slag, and V₂ O₅ is reduced to metal., which dissolves in the molten iron.

Elyuminirovanie

Aluminothermic process can be carried out in a refractory-lined steel crucible or water-cooled copper crucible. A mixture of V₂ O₅, iron oxide and aluminium is ignited by a jumper from barium or magnetic tape. The production of pure metal, V₂ O₅ occurs through the restoration of calcium or aluminum. When you restore calcium exothermic reaction is conducted in a sealed vessel with the use of calcium chloride as a flux. The recovered metal is removed in the form of granules. When conducting aluminizing V₂ O₅ are mixed with aluminum powder, heated in an electric furnace or calcined with the use of barium peroxide as the reaction generator. The thus obtained metal can be further purified by electron-beam melting.

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Are you interested in the production of vanadium? Supplier KMZ offers to buy vanadium and its alloys at economical price. Supplier guaranteed timely delivery at any address specified by the consumer.

Supplier, price

Buy rare and refractory metals from a vendor KMZ can at an affordable price. The price is formed based on the European standards of production. Buy vanadium at a reasonable price, you can wholesale or retail. Regular customers can take advantage of the discount system of discounts from the company KMZ.