Bethlehem Steel

About: Bethlehem Steel is a based out in . It is known for research contribution in the topics: Coating & Corrosion. The organization has 1529 authors who have published 1559 publications receiving 19098 citations. The organization is also known as: Bethlehem Steel Corporation.

Process for producing low reactivity calcined coke agglomerates

Abstract: A process for producing calcined coke agglomerates characterized by having a low reactivity to carbon dioxide. The process includes calcining green coal agglomerates at a temperature within the range of 1700° F. to 1950° F. (927° C. to 1066° C.) in a calciner. The agglomerates are exposed to a gaseous atmosphere which before cracking contains not less than 20% by volume of at least one straight chain aliphatic hydrocarbon gas containing one to four carbon atoms. The gaseous atmosphere is preheated to a temperature within the range of 200° F. to 700° F.(93° C. to 371° C.) prior to being introduced into the calciner. Carbon produced when the hydrocarbon gas is cracked, is deposited as vitreous carbon on the surfaces, in the fissures and in the pores of the agglomerates. The calcined coke aggglomerates discharged from the calciner have a reactivity to carbon dioxide of between 2% to 8%.

Process for improving wear on conductor rolls in electroplating of steel surfaces

Abstract: In the electroplating of strip steel (11) with zinc or zinc alloys in a strip electroplating line the steel strip (11) coated with zinc or zinc alloy exits the system via a metal conductor roll (20). Metal tends to deposit on the conductor roll. To remove such metal the conductor roll (20) is normally partially immersed in an acid bath (21) containing, for example, sulfuric acid. A problem is corrosion of the conductor roll (21) by the acid. This corrosion of the conductor roll (21) is considerably slowed by adding an oxidizing agent such as hydrogen peroxide, sodium peroxydisulfate or potassium peroxydisulfate to the acid bath in accord with the present invention.