Abstract: An agglomeration process for metallurgical by-products and waste products is described, utilizing the sulphate material present in the metallurgical waste and by-products, which involves reacting the sulphate with water and optionally with an added alkaline earth metal compound. Sulphuric acid may also be added to the particles to be agglomerated. The obtained mixture is extruded or cast, and allowed to harden before being used in recycling to an extractive process. The agglomeration mechanism involves one or more of, hydration of a water soluble sulphate, precipitation of a water insoluble alkaline earth metal sulphate and hydration of a water insoluble sulphate.

Abstract: A process for forming agglomerates of metallurgical dust containing metal sulphates for recycling to extractive processes includes adding lime particles and a small amount of water, forming a mixture and extruding the damp mixture and allowing the extruded agglomerates to become hard and shape retentive. The material agglomerated may be water soluble metal sulphate containing particles or mixtures of such particles with other value metal bearing waste or by-products of metallurgical processes. Optionally additional binding agents comprising cement and hydrocarbonaceous substances such as wax may be added to the mixture.

Abstract: A process for cutting very large solidified pools of metal and metallic structures by flame cutting by means of an improved burning bar is described. The cutting is conducted by a hot flame composed of very hot high pressure oxygen exiting from a burning bar packed with intermingled mild steel and aluminum rods. The hot flame or blast of oxygen melts and mobilizes the molten metal by creating a molten stream and jettisoned molten droplets and oxidized particles.

Abstract: A process for agglomerating by extrusion, metallurgical by-products and waste products having small particle size, is described. A blend of metallurgical by-products, some of which contain silicates previously treated at high temperatures and thereby being capable of chemically and structurally binding water, optionally mixed with portland cement and/or slag cement, and containing water which has been added in amounts that the silicates and cement present can completely absorb and react with, is further mixed with a hydrocarbonaceous substance. The resulting mixture is subsequently agglomerated by extrusion. The extrudates obtained are shape retaining and sufficiently hard to be handled without breaking, crumbling or dusting, and may be charged to extractive pyrometallurgical installations for recovering value metals contained in the metallurgical by-products and waste products. The extrudates may also be stored without dusting and loss of hardness.

Abstract: A process for cutting very large solidified pools of metal and metallic structures by flame cutting by means of an improved burning bar is described. The cutting is conducted by a hot flame composed of very hot high pressure oxygen exiting from a burning bar packed with intermingled mild steel and aluminum rods. The hot flame or blast of oxygen melts and mobilizes the molten metal by creating at molten stream or jettisoned molten droplets and oxidized particles.