Abstract:
An improved method and process for recovery of valuable metals from spent lithium batteries in highly purified and saleable form. The spent lithium batteries are shredded in a wet environment and wet screened to separate coarser particles containing copper, iron, aluminium, shredded plastic contents, and finer particles containing valuable materials like lithium, cobalt, nickel, and manganese wherein cobalt and nickel are recovered in saleable form using a selective adsorption technique. The finer particles obtained are passed through a resin column filled with adsorbents or resins for selectively loading the particular type of metals. The present invention provides benefits including low processing costs, recovery of nickel and cobalt in pure and saleable form, thereby producing greater social and economical benefits.
Abstract:
The present invention relates to an apparatus and a method for automatic segregation of working and non-working parts from waste printed circuit boards or electronic waste with minimal or no manual efforts. The apparatus comprises a component segregation section and a chip separation section, contiguous to segregation section to segregate the components in various stages depending upon their functionality, nature and reusability. The apparatus takes in the bulk waste product as feed; the entry of the same is sensed by the sensors provided on the conveyor belt and that initiates the segregation process. The components from the waste product then undergo a number of stages wherein all necessary steps are taken like, size sorting, metallic parts sorting, reusable parts sorting. The automatic segregation according to the present invention is based upon the principles of size sorting, metals sorting and chip sorting.
Abstract:
The present invention relates to an improved process and method of recovering precious metal values from chips of waste PCBs. The invention resides in providing the possibility of reutilization of metals abundant in chips of waste PCBs. The method is specific to metal recovery from waste PCBs especially from mother boards of computers, laptops and other electronic equipments equipped with printed circuit boards. In an embodiment of the invention, the hydrometallurgical method is provided to separate out metal values from chips of waste PCBs. In this method, the source material is pulverized using a size reduction apparatus preferably a ball mill followed by sieving through specific mesh size that leads to separation of Metal impurities, polymeric matrix from precious metals and silicious matrix.
Abstract:
The present invention relates to an improved process and method of recovering metals of value from used Lithium Ion batteries. More particularly, the invention provides a method for recovering cobalt and lithium along with other metals of value wherein the method majorly includes physical processes for separation, in particular wet screening a slurry, limiting the use of chemicals for removing minor impurities. Majority of elements were separated by physical process instead of chemical process which gives the benefit of cost saving in chemical treatment of liquid and solid effluents. Chemicals are used to dissolve only minor impurities from electrolyte which lead to the process economically attractive. This makes the method of recovering metal values is environment friendly. The invention provides for a cost effective, economic and environmental friendly process for recovering metals of value.