Cobalt Sulfates TRIZ Cases
- Lithium Battery Wet Leaching With H2S for Selective Metal Recovery
Pressurized H2S and staged pH-controlled leaching separate Li, Mn, Ni, and Co from battery powder with lower metal loss and purer products.
- Nanofiltration Membrane Separation of Cobalt and Nickel Salts
A selective nanofiltration membrane separates cobalt and nickel salts from aqueous solution with lower solvent use, smaller facilities, and reduced impact.
- Lithium Recovery from Waste Li-Ion Batteries via Salt Separation
Selective extraction and membrane electrolysis remove non-lithium cations, recover lithium, and recycle acid and alkali salts.
- Metal Sulfate Crystallization with Mother Liquor Recycle
Returning mother liquor to electrowinning enables battery-grade metal sulfate crystallization with lower water use and better plant integration.
- Method for producing lithium sulfate and transition metal sulfate
A two-stage crystallization route separates lithium sulfate and transition metal sulfates while minimizing sodium contamination and post-treatment.
- Transition Metal Leaching Using Internal Redox Recovery
Mixing oxidized and reduced battery materials enables sulfuric acid leaching of nickel, cobalt, and manganese without extra redox agents.
- Lithium-Ion Black Mass Copper Recovery by Nickel Cementation
Nickel cementation simplifies copper recovery from lithium-ion battery black mass, cutting process complexity and enabling high-purity metal separation.
- Lithium-Ion Black Mass Extraction With Recycled Lithium Fractions
Recycled lithium-containing fractions are fed back into black mass leaching to raise lithium recovery and cut lithium in waste effluents.
- Copper Sulfide Leaching for Copper-Nickel-Cobalt Alloy Separation
Sulfuric acid plus a sulfurizing agent precipitates copper as sulfide, leaving nickel and cobalt in leachate for cleaner alloy separation.
- Integrated Catalyst and Battery Recycling for Higher Metal Recovery
By linking spent catalyst and battery recycling, this process reuses byproducts as feedstock to raise metal recovery and cut waste.
- Autoclave Metal Powder Dissolution for High-Purity Sulfate Solutions
Elevated-temperature autoclave dissolution speeds metal powder reaction with sulfuric acid while avoiding oxidants and producing high-purity sulfate solutions.
- Spent Pickle Liquor Treatment via Oxygen and Sulfuric Acid
Converting ferrous chloride in spent pickle liquor into ferric sulfate using sulfuric acid and pressurized oxygen, eliminating chlorine hazards.
- Two-Circuit Nickel Cobalt Extraction Process
A two-circuit process extracts nickel and cobalt simultaneously using specific pH ranges and extraction agents.
- Battery Waste Recovery via Acid Dissolution and Crystallization
Acid dissolution and evaporative crystallization recover high-purity metal sulfates from battery wastes while eliminating exhaust gas pollution.
- Solvent Extraction for High-Purity Cobalt Sulfate Production
Three-step solvent extraction removes calcium, magnesium, and sodium impurities from chloride solutions to produce battery-grade cobalt sulfate.