Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Methods for diagnosing irritable bowel syndrome
Medicament delivery device and a method of medicament delivery
Image processing apparatus and image processing method
Image reading apparatus
Camera system, video processing apparatus, and camera apparatus
Image enhancement based on multiple frames and motion estimation
Generating a representation of an object of interest
  Randomly Featured Patents
Casing perforator
Press for producing shaped articles
Test apparatus and test method
Barcode image recognition system and associated method for hand-held device
Taillight for a bicycle
Fishing lure apparatus and method
Audio data transmitting apparatus for webcasting and audio regulating methods therefor
Blend of viscosity modifier and luminescent compound
Combination molding/punching station for molding and punching containers out of a foil strip of thermoplastic synthetic material
Polyaxial bone screw assembly with fixed retaining structure