producto

Category:

Ore, Tantalum, Niobium, Coltan, Columbite, Tantalite.

Analysis:

Product Details:

Niobium is a gray and ductile metal, very similar to tantalum. It’s extracted from an ore called coltan (columbite and tantalite composed). The columbite – compound niobium oxide, iron and manganese [(Fe, Mn) Nb2O6]- 98% of its reserves are in the state of Amazonas and Roraima.   The Oreization of Ta an Nb economically most valuable and important are the tantalite – compound niobium oxide, iron and manganese [(Fe, Mn) Nb2O6]-. Niobium is known as columbium U.S.   If the ore has more niobium and less tantalium is called Columbite-tantalite or Ferrocolumbita-tantalite. And if it’s the opposite it’s called Tantalite. Columbite is common in nature forming elements are combined and Ores predominate over each other, as in this case.   Columbite and tantalite, together with other Ores of tantalum and niobium carriers, they’re known informally by the abbreviation “coltan”; but if you want to accurately and appropriately refer to on this wealth, which has Venezuela, Brazil and Colombia, it’s necessary to start talking particularly of tantalum and niobium Oreization of these basic elements.   Tantalum and niobium are refractory metals. They have a high melting point and withstand exceptionally high temperatures, 3017° C and 2468° C respectively. The heat resistence of Ta is twice the iron and is exceeded only by tungsten and rhenium; accordingly, the Ta and Nb have the potential to be used in high temperature resistant applications. Even, tantalum carbide (TaC) supports 3880°C and further has hardness similar to diamond.   Nb and Ta are well known and no exists any mystery about them; appear bright gray color tending to turn blue when comes into contact with air; both belong to the goup of transition metals, have high density and weight, good ductility, are resistant to corrosion and superb thermal and electrical conductors. Thanks to its exceptional propierties, are currently used in the manufacture of high-tech components and super-strong metallurgical alloys.

  • The largest producer of Niobium is Brazil.
  • Deliver in 50 kg bags.
  • Available sizes: less than 1mm.
  • EXW (in stock mine) or FOB (port of shipment).
  • Different concentrations under client application
  • Ports of departure: Santana, Amapá, Brazil.

Price:

Check the last offer availale. Market prices less discount depending of the payment terms, quantities and applied Incoterm.

Price Terms:

Check the last offer available. L/C or T/T.

Proceso de compra:

We prepare ad-hoc concentrations of mineral for every customer. If you are interested in this product, the fast purchase procedure is as follows:

  • Kindly send an email to neiman@neimanbrasil.com.br with the product you want to buy including specifications (chemical and physical) and quantities along with the data of your company.
  • Within a maximum of 5 working days we will reply to your request with the purchase contract. The contract is prepared in accordance with international standards where we will indicate the price, specifications, loading port. The payment term is L/C 100 % at loading port. If we can not supply the product we will tell you in 3 days.
  • Within a maximum of 5 working days should send the contract, filled, signed and sealed by the buyer. Any comment to this contract shall be settled during that workweek.
  • Within 5 working days we will return the contract signed and sealed by us. The electronic copy will be deemed legal contract.
  • BUYER issues DLC with 10(ten) banking days.
  • Shipments start as agreed within 60 days after the financial instrument from the BUYER is opened. ALL RISKS WILL BE TRANSFERRED FROM SELLER TO BUYER UPON LOADING THE MATERIAL INTO VESSEL AS PER INCOTERMS.

Recommended procedure for trials shipments prior to the formalization of long- term agreement. Discounts under the official rates for deliveries of material EXW (in factory and mine) and for the supply of ore with anticipations after the signing contracts. Currently, product only avalaible under request and upfront payment 30%. Delivery 60 / 90 days.

M-6 tantalita niobium