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 preparing ores for concentration

Abstract: IMPROVED PROCESS FOR PREPARING ORES FOR CONCENTRATION Abstract of the disclosure A process for preparing ores for separation and recovery of minerals from gangue wherein crushed particles of ores are subjected to a series of sequential dry impact grinding steps in a plurality of dry centrifugal impact grinding mills to produce a product containing liberated minerals and gangue at a coarser than normal liberation size. The product can be treated by mineral separtation and recovery processes to separate the minerals from gangue and recover the minerals as a usable concentrate of a predetermined grade. The efficiency of hte mineral separation and recovery processes, for example, froth flotation, magnetic separation, gravity separation, and the like, is improved. The process makes the recovery of minerals more economical than prior preparation processes.

Mechanism of Creep in MgO Brick

Abstract: Creep of selected brands of periclase refractories was studied using rate process theory to provide information on activation energy and on the dominant method of deformation. A brand studied over the range 2200° to 2600°F at 25 psi gave an activation energy of 62 kcal/mole. All brands were studied at selected stresses and 2500°F to determine the flow mechanism. Plastic flow was indicated for all brands tested.

Refractory gunning composition

Abstract: A dry-nozzle gunning refractory composition consisting essentially of magnesia grains from crushed used refractory bricks, sodium bentonite clay, and a binder consisting essentially of a mixture of anhydrous sodium silicate particles and hydrated sodium silicate particles.

Method of manufacturing metal sheet and foil

Abstract: An aqueous slurry of superconcentrated iron ore powder and a binder is continuously deposited on a supporting carrier, dried, and the resultant coating heated in a reducing atmosphere to about 1,500 DEG to 2,100 DEG F. for several minutes to partially reduce the oxygen content of the ore. The coating is then stripped from the carrier and rolled to provide a strip of increased density. The strip is open coiled and heat treated to completely reduce the oxygen content of the ore, as well as to sinter the strip, and rolled to final gauge. The strip is then annealed, which both softens and further sinters the strip, and finish rolled.