Abstract: An improved can crusher has two movable jaws, a first jaw and a second jaw, both movably mounted in a support housing. The jaws are initially spaced apart one from the other a distance sufficient to allow a can to be inserted between them. A member capable of generating a mechanical force is mounted on the housing and is directly connected by a connecting member to the second of the movable jaws by a force transferring member and is indirectly connected by the same connecting member to the first jaw by a force modifying member. The force modifying member modifies the mechanical force so generated to achieve a mechanical advantage. When the member capable of generating the mechanical force is activated this force is first transferred to the first jaw, and because of the mechanical advantage achieved, the first jaw is able to initially overcome the structural resistance of the can and crimp it.

Abstract: A process for the separation of a low metals content organic material from an easily calcinable solid material, effected by treating a low-melting solid material, resulting from the refining of a hydrocarbon crude oil, with naphtha at an elevated temperature and pressure whereby the resulting solid material, after separation of the liquid organic material, is in condition to be readily calcinable.

Abstract: Vanadium values may be recovered by leaching a vanadium bearing material in which the vanadium is present as an oxide in its highest valence state in an ammoniacal medium at elevated temperatures and pressures followed by separation of the soluble ammonium metavanadate, precipitation and further separation to recover the desired vanadium values.

Abstract: Vanadium values such as those in the form of vanadium pentoxide may be recovered from vanadium-containing materials by leaching the vanadium-containing material with caustic and thereafter precipitating insoluble salts of vanadium with an ammonium-containing compound followed by separation and recovery. After suitable stripping of the ammonia from the lean leach solution, said solution may be recycled to the leach step. The recovery of the vanadium values is enhanced by effecting the precipitation step in the presence of carbon dioxide which maintains the pH of the solution in the optimum range.

Abstract: Rhenium is recovered in a substantially pure form from a hydrochloric acid solution thereof contaminated with molybdenum and iron by adding sulfuric acid to establish a sulfate/chloride anion ratio of at least 20:1 and mixing the solution with a liquid trialkyl phosphate to extract rhenium in the phosphate phase. The trialkyl phosphate phase is seaprated and washed with sulfuric acid to remove any residual iron and molybdenum and thereafter with hydrochloric acid to remove entrained sulfuric acid. Rhenium is recovered by back extracting with nitric acid.