Resources Contact Us Home
Device for the selective injection of an oxidizing gas or a carrier gas with or without carbonaceous material to a liquid metal bath

Image Number 10 for United States Patent #4693274.

This invention relates to a device used in the selection between two fluids that are to be injected into a liquid metal contained in a metallurgical converter: an oxidizing gas and another gas conveying powdered carbonaceous material; both fluids arrive through different conduits to a selecting valve located at the bottom of a metallurgical converter just before a single conduit tuyere for leading one of the fluids to the liquid metal by means of the selective mechanism in such valve. The valve design and operation avoids the possibility of mixing the oxidizing gas with the carbonaceous powder in any part of their path up to the metal bath by providing separate passages for each fluid and one inert gas purge passageway between said passages, and further including a safety mechanism which provides control means for the fluid to be correctly injected by avoiding the transport of the oxidizing gas or the carbonaceous material if the corresponding movable passage within the valve body is not correctly and precisely positioned.

  Recently Added Patents
Magnetic memory and method of manufacturing the same
Content output control device and content output control method
Puncture resistant fabric
Method for remotely measuring fluctuations in the optical index of refraction of a medium
Nucleic acids for cloning and expressing multiprotein complexes
Methods for measuring media performance associated with adjacent track interference
Cover panel for frame based door lock
  Randomly Featured Patents
Systems and methods for predicting healthcare risk related events
Plasma processing apparatus using a partition panel
Hybrid in-situ dry cleaning of oxidized surface layers
Header driven packet switching system and method
Antifreeze composition
Method of forming a bandgap tuned vertical color imager cell
Gasket for electrolyte membrane
Method for attachment or integration of a BIOS device into a computer system using the system memory address and data bus
Fluoroelastomer coated fuser roll
Digital computer code word identification system