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.

Transition plate for a mine roof truss

Abstract: A generally rectangular transition plate for connecting inclined and horizontal chords of a mine roof truss has one face defining a generally flat planar plate bearing surface adapted to be closely received against a mine roof. The sides and one end of the plate are bent outwardly from the one face. A first opening in the plate adjacent the one end is adapted to receive a mine roof bolt. A second opening in the plate is located adjacent the other end of the plate. A saddle portion extends between the other end of the plate and the second opening and is adapted to receive a truss tie member. The plate has a low profile and sufficient rigidity to sustain the forces present in the truss.

Method for recovering fine coal and coal-containing particles in a coal recovery circuit

Abstract: Improved method of treating a fine coal slurry from a coarse coal washing circuit and/or a slurry from a fine coal recovery circuit wherein the slurries are passed to a first frothflotation step to recover a substantial portion of the fine particles of coal therein as a froth product, dewatering the froth product to obtain a cake product containing usable coal and an effluent containing substantially all finely divided coal particles. The effluent is passed to a second series of frothflotation cells wherein the fine particles of coal are removed as a second froth product and substantially clean water is recovered as the tailings product. The second froth product is returned to the recovery circuit wherein the fine particles of coal are recovered. The tailings product may be recycled if desired.

Sealed wire rope

Abstract: A corrosion resistant rope in which the individual strands are sealed with a plastic foam impregnant and which exhibits excellent retention of lubrication is made by preimpregnating the outer strands of the rope with plastic foam material prior to closing the strands into a wire rope. The final rope may then be surface lubricated to provide temporary and long term corrosion resistance and lubrication to exposed surface wires.

A comparison of the fracture behavior of two commercially produced heats of HY180 steel differing in sulfide type

Abstract: The mechanical properties of two heats of HY180 steel are compared after aging at 425 °C or 510 °C. The two heats of material appear very similar microstructurally, except most of the sulfides in one are believed to be titanium carbosulfides, while the sulfides in the other heat appear to be manganese sulfides. At both aging temperatures, the crack tip opening displacement at fracture (δIC) of the heat containing the titanium carbosulfides is over twice that of the heat containing the manganese sulfides. Measurements of the void volume fracture as a function of strain indicate that the titanium carbosulfide particles are much more resistant to void nucleation than are the manganese sulfide particles. The unusually high toughness of the heat containing the titanium carbosulfides is attributed to this increased resistance to void nucleation.

Method for producing manganese oxide pellets

Abstract: Method for producing manganese oxide pellets from manganese-bearing material such as high grade, medium grade or low grade oxidic or carbonate manganese ores and from waste products which are obtained from high grade and medium grade manganese ore processing plants. The manganese-bearing material is beneficiated to form an upgraded concentrate which includes manganese oxides and non-magnetic iron oxides. The concentrate is roasted to reduce the manganese oxides to mangano-manganic oxide and to reduce a major portion of the non-magnetic iron oxides to magnetic iron oxides. The roasted concentrate is ground and treated magnetically to separate non-magnetic particles from magnetic particles. The ground non-magnetic particles are flocculated, thickened and filtered to thus produce a non-magnetic concentrate which may be partially dried and which is balled and pelletized.