Abstract: A system and method for cooling and removing metallic iron and other aggregate from a moving hearth is provided. Cooling may be provided by a secondary cooling system and a spray cooling system in a cooling zone. The secondary cooling system may include an arrangement of coolant tubes for absorbing heat. A flow of nitrogen may be provided through the cooling zone. The spray cooling system may provide evaporative cooling. Aggregate removal may be provided by a magnetic removal system, a plow system, and a sweeper system. The magnetic removal system uses a magnetic device and a moving belt to remove iron materials. The plow system uses a plow to separate and remove aggregate from the moving hearth. The sweeper system may use a vacuum device to pull materials from the moving hearth.

Abstract: 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 de-smutting tank, a filtration unit and a heat exchanger.

Abstract: 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 comprised of hydrogen peroxide prior to and/or after the strip is immersed in a solution contained in a pickling tank. The set(s) of sprayers in each of the pickling tanks are located above the level of the pickle bath solution, rather than being located in separate spray tanks. Upon exiting the final pickling tank, the strip is brushed/scrubbed to loosen any residual scale to form a clean strip.

Abstract: The pickling process of the present invention is designed for pickling electrical steel strip in a continuous fashion. It comprises at least one pickling tank equipped with at one sprayer designed to spray the top and bottom surfaces of a steel strip with a solution comprised of hydrogen peroxide prior to and/or after the strip is immersed in a solution contained in a pickling tank. Upon exiting the final pickling tank, the strip is brushed/scrubbed to loosen any residual scale to form a clean strip.

Abstract: 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 de-smutting tank, a filtration unit and a heat exchanger.