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US 12,626,931 B2Granted
System and method for recovering constituents from batteries
AssigneeEnvironmental 360 Solutions Ltd.
InventorsLeslie Mclean, Vaikuntam I. Lakshmanan, James Ewles, Ashish Bhandari
Life of this patent
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Abstract
An apparatus, method and system are provided to recover constituent components from single use batteries. In particular, the apparatus, method and system may be used to recover zinc and manganese in the form of sulfates from depleted commercial which in turn may be subsequently used for other applications, such as micronutrients and fertilizers.
Claims17
An apparatus comprising:
- a first leach chamber to treat a slurry with a first acid and a first oxidizing agent to form a first solution including first metal ions and second metal ions;
- a precipitation reactor to receive the first solution from the first leach chamber, wherein the first solution is to be reacted with a first metal oxide and ozone to form a precipitate, wherein the precipitate is to be separated from a portion of the first metal ions remaining dissolved;
- a first crystallization chamber to crystallize the portion of the first metal ions for collection;
- a second leach chamber to receive the slurry after treatment by the first leach chamber and the precipitate, wherein the second leach chamber is to treat the precipitate with a second acid and a second oxidizing agent to form a second solution including the first metal ions and the second metal ions;
- a cementation chamber to receive the second solution from the second leach chamber, wherein the second solution is to be reacted with a reducing agent to form a first metal, wherein the first metal is to be delivered to the first leach chamber;
- and
- a second crystallization chamber to crystallize the second metal ions in the second solution for collection.
4 more elements
A system to provide zinc sulfate and manganese sulfate from batteries, the system comprising:
- a grinder to receive the batteries, the grinder to grind the batteries to provide a slurry in a grinding process;
- a first leach chamber to treat the slurry with sulfuric acid and oxygen to provide a first liquid and a first solid, wherein the first liquid and the first solid are mixed together in the first leach chamber;
- a second leach chamber to receive the first solid from the first leach chamber, wherein the second leach chamber is to treat the first solid with sulfuric acid and sulfur dioxide to provide a second liquid including zinc ions and manganese ions;
- a cementation chamber to receive the second liquid from the second leach chamber, wherein the second liquid is to be reacted with a manganese powder to provide zinc metal and a third liquid, wherein the zinc metal is to be transferred to the first leach chamber;
- a manganese crystallization chamber to receive the third liquid, wherein the manganese crystallization chamber is to form the manganese sulfate for collection;
- a precipitation reactor to receive the first liquid from the first leach chamber, wherein the first liquid is to be reacted with zinc oxide and ozone to form manganese dioxide and a fourth liquid, wherein the manganese dioxide is to be transferred to the second leach chamber for treatment with the first solid;
- and
- a zinc crystallization chamber to receive the fourth liquid, wherein the zinc crystallization chamber is to form the zinc sulfate for collection.
5 more elements
Dependencies are inferred from the claim text.