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  • Zirconium in Nitric Acid Applications (.pdf)
    Nitric acid is one of the most widely used acids in the Chemical Processing Industry. It is a key raw material in the production of ammonium nitrate for fertilizer, and is also utilized in a variety of manufacturing processes, including the production of industrial explosives, dyes ,plastics
  • Niobium (Nb) for Hot Concentrated Nitric Acid: Material Selection & Field Experiences with Nb-Shell & Tube Heat Exchangers (.pdf)
    The highly acid, oxidizing conditions in parts of nitric acid plants severely tax conventional materials such as high-purity aluminum and high-silicon stainless steel. Long-term field-testing of these materials along with tantalum, tantalum-25%tunsten and niobium showed excellent performance
  • Study: Methane Cleans Nitric Oxide From Power Plant Emissions
    in a safer and less expensive way than any currently available. Nitric oxide is a common byproduct of combustion, and cars and fossil-fuel burning power plants are two chief sources of the molecule. Once released, nitric oxide reacts with oxygen to produce nitric acid -- a main component of acid
  • Central Air Abatement System (CAAS) Scrubbing in Semiconductor Manufacturing (.pdf)
    A number of sources in the semiconductor manufacturing process produce diluted levels of acid gases, silanes, ammonia and some organics. The most common gases are hydrochloric acid (HCl), hydrofluoric acid (HF), hydrobromic acid (HBr), phosphoric acid (H3PO4), nitric acid (HNO3) and ammonia (NH3).
  • Influence of Plastic Deformation on The Integrity and Corrosion Resistance of Tantaline Surface Treatment (.pdf)
    Material Selection Resources Inc has been involved in selecting materials for valves and pumps in very harsh environments for its clients. Many of the applications require good corrosion resistance in acids such as nitric acid and hydrochloric at high concentrations and elevated temperatures.
  • Determining Whether a Ring is Carbon or Stainless Steel
    SAE 1060-1090 Carbon Steel and PH 15-7 MO Stainless react differently to nitric acid. A drop of nitric acid placed on carbon steel will cause the steel to become dark in color. When placed on stainless, the material will not change in color. Holding a portion of the ring against a grinding wheel
    , nitric, and hydrofluoric. In the case of hydrochloric acid, the process can. selectively separate chloro-anionic complexes such as Zn, Pb, and Cu, which are then eluted with. water. The acid recovery technology can also be closely coupled with ion exchange processes in. order to minimize
  • Zirconium
    In addition to resisting HCl at all concentrations and at temperatures above the boiling temperature, zirconium and its alloys also have excellent resistance in sulfuric acid at temperatures above boiling and concentrations to 70%. Corrosion rate in nitric acid is less than 1 mil/year

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