| Patent Number |
Title Of Patent |
Date Issued |
| 6802965 |
Apparatus for removing hydrogen peroxide from spent pickle liquor |
October 12, 2004 |
| The present invention provides a process for the removal of hydrogen peroxide from spent pickle liquor used in a steel strip pickling process. The process utilizes an enclosed decomposition tank which includes a pickle liquor inlet pipe, an outlet pipe, at least one vent pipe, an int |
| 6746614 |
Method for removing hydrogen peroxide from spent pickle liquor |
June 8, 2004 |
| The present invention provides a process for the removal of hydrogen peroxide from spent pickle liquor used in a steel strip pickling process. The process utilizes an enclosed decomposition tank which includes a pickle liquor inlet pipe, an outlet pipe, at least one vent pipe, an int |
| 6645306 |
Hydrogen peroxide pickling scheme for stainless steel grades |
November 11, 2003 |
| The present invention relates to a process for pickling hot rolled, hot rolled & annealed, and cold rolled & annealed stainless steel strip in a continuous fashion. The process comprises a series of pre-pickling tanks and pickling tanks, and optionally includes a scrubber-brush tank, a |
| 6599371 |
Hydrogen peroxide pickling scheme for silicon-containing electrical steel grades |
July 29, 2003 |
| The pickling process of the present invention is designed for pickling electrical steel strip in a continuous fashion and comprises at least one pickling tank equipped with at least one set of sprayers designed to spray the top and bottom surfaces of a steel strip with a solution compris |
| 6088895 |
Method for descaling hot rolled strip |
July 18, 2000 |
| This invention relates to a process for producing a cold rolled, recrystallation annealed, stainless steel strip having lustrous surfaces without being hot band annealed and/or pickled prior to cold reduction. The process includes the sequential steps of tension leveling to crack the |
| 5743968 |
Hydrogen peroxide pickling of stainless steel |
April 28, 1998 |
| A process for removing scale from stainless steel using an aqueous solution containing hydrogen peroxide and an inorganic acid, i.e., hydrochloric or sulfuric acid. A hot rolled or annealed stainless steel strip (10) covered with scale is immersed into hot inorganic acid contained within |
| 5702534 |
Hydrogen peroxide pickling of stainless steel |
December 30, 1997 |
| A process for removing scale from stainless steel using an aqueous solution containing hydrogen peroxide. A hot rolled or annealed stainless steel strip (10) covered with scale is immersed into hot sulfuric acid contained within tanks (12) and (14). Thereafter, the strip may have residua |
| 5106467 |
Alkaline leaching of galvanized steel scrap |
April 21, 1992 |
| Caustic dezincing galvanized steel scrap. A dezincing plant includes a plurality of tanks interconnected in series with steel scrap sequentially being moved through each of the tanks. The tanks contain a caustic leaching solution including an oxidant with the leaching solution being |
