Scrap Silver Recovery
The Bureau of Mines undertook a study of recovery of precious metal values from surplus and obsolete electronic gear as a part of its continuing effort to achieve maximum use and conservation of natural resources. During the early phase of the study it was learned that some military aircraft contained significant quantities of silver as […]
Electrolytic Method for Recovery of Lead from Batteries
Low Temperature Properties of Tin and Tin-lead Alloys Add see Leaching and electrochemical recovery of copper, lead and tin from scrap printed circuit boards.
Recycling Sand from Foundry Casting Molds
The flowsheet shown in this study is particularly adapted to the requirements of the average foundry to reclaim foundry sand for re-use. Any foundry whose new sand delivered costs is too high should seriously consider reclamation with the flowsheet as illustrated. This reclaimed sand is usually equal to, or better than the original sand. Foundry […]
Foundry Sand Reclamation Process
Flotation Deinking Paper Recycling De-Inking Waste Paper
The pulping consisted of disintegration of the wastepaper structure and dispersion of the fibers. The disintegration was accomplished by conditioning 250 grams of wastepaper, under moderate agitation, with hot steam (84 to 90 °C), de-ionized water and reagent as desired. After disintegration the pulp was further dispersed in a high speed blender. All pulping experiments […]
Scrap Metal Recycling Process Flowsheet
Build your own scrap metal recycling machine