Method for separating cobalt metal sheet from secondary sources useful for cathode material of lithium-ion batteries, involves treating slurry of reduced cobalt alloy with sodium borohydride, washing slurry with sulfuric acid, treating with hydrogen peroxide, and treating with hydrazine hydrate
	VERMA R; MANDAN C; SATHU N K; MANKAR B; KUMAR A
	2024-12-16
专利权人	LOHUM MATERIALS PRIVATE LTD (LOHU-Non-standard)
申请日期	2024-12-16
专利号	IN202411099615-A
成果简介	NOVELTY - Separating cobalt metal sheet from secondary sources, involves providing medical implants metal alloy (F75 alloy); treating the F75 alloy with Sodium borohydride (NaBH4) for 60-90 minutes (min) to obtain a slurry of reduced F75 alloy; washing the slurry of F75 alloy, followed by treating the same with sulfuric acid for 120-180 min at 60-80 ℃, followed by cooling 10 the same to room temperature; treating the slurry of F75 alloy with hydrogen peroxide for 60-120 min to effect an exothermic reaction resulting in leachate comprising sulfates of cobalt, chromium and molybdenum, and optionally undissolved materials, followed by filtering the undissolved material; treating the leachate comprising sulfates of cobalt, chromium and molybdenum with hydrazine hydrate for 120-180 min at potential of hydrogen (pH) to 0.9-0.96, resulting in the formation of a chelation complex of cobalt and a chelation complex of molybdenum as precipitate; treating the hydrazine complex. USE - Method for separating cobalt metal sheet from secondary sources useful for cathode material of lithium-ion batteries that is used smartphones, laptops, and electric vehicles. Also used as catalysts. ADVANTAGE - Recycling of spent F-75 alloy has economically advantage and is sustainable process to conserved cobalt based ores. The process is simple chemical process for recycling of industrial inorganic waste to a high value chemicals like synthesis of high pure cobalt sulfate and cobalt metal sheet. DETAILED DESCRIPTION - Separating cobalt metal sheet from secondary sources, involves providing medical implants metal alloy (F75 alloy); treating the F75 alloy with Sodium borohydride (NaBH4) for 60-90 minutes (min) to obtain a slurry of reduced F75 alloy; washing the slurry of F75 alloy, followed by treating the same with sulfuric acid for 120-180 min at 60-80 ℃, followed by cooling 10 the same to room temperature; treating the slurry of F75 alloy with hydrogen peroxide for 60-120 min to effect an exothermic reaction resulting in leachate comprising sulfates of cobalt, chromium and molybdenum, and optionally undissolved materials, followed by filtering the undissolved material; treating the leachate comprising sulfates of cobalt, chromium and molybdenum with hydrazine hydrate for 120-180 min at potential of hydrogen (pH) to 0.9-0.96, resulting in the formation of a chelation complex of cobalt and a chelation complex of molybdenum as precipitate; treating the hydrazine complex of cobalt in the solution; with 20 sulfuric acid at 40-60℃ to obtain cobalt sulfate; purifying the cobalt sulfate present in the solution; using bis(2,4,4-trimethylpentyl phosphinic acid; and effecting the cobalt sulfate from step g) for electro-winning process to obtain the cobalt metal sheet.
IPC 分类号	C22B-023/00 ; C22B-003/10 ; C22B-034/34 ; C22B-007/00
国家	印度
专业领域	材料科学
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/14025
专题	中国科学院新疆生态与地理研究所
作者单位	LOHUM MATERIALS PRIVATE LTD (LOHU-Non-standard)
推荐引用方式 GB/T 7714	VERMA R,MANDAN C,SATHU N K,et al. Method for separating cobalt metal sheet from secondary sources useful for cathode material of lithium-ion batteries, involves treating slurry of reduced cobalt alloy with sodium borohydride, washing slurry with sulfuric acid, treating with hydrogen peroxide, and treating with hydrazine hydrate. IN202411099615-A[P]. 2024.

条目包含的文件
条目无相关文件。

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。