Recovering Materials TRIZ Cases

Phosphonium salt ionic liquids selectively extract Fe(III) ions from aqueous feedstocks via liquid-liquid transfer.

Organic amine cation complexes selectively solubilize metal hydroxides via ion exchange, resolving environmental hazards from traditional lixiviants.

A rocking receptacle tilts to pour molten aluminum from dross through angled outlets.

Ceramic grinding media disrupt metal sulfide crystal lattices to accelerate oxidative leaching kinetics, reducing energy consumption and reagent requirements.

Simultaneous leaching and sorption in wet solids reduces leaching agent consumption while improving metal recovery efficiency.

A method precipitates iron-rich phases in molten slag through controlled cooling and holding to enable efficient magnetic separation.

Continuous lithium extraction using phosphine oxide stripping regenerates the organic phase for high-purity separation.

A backflow cascade process separates lithium-7 isotopes using countercurrent organic and aqueous phases in multiple sections.

Hot extrusion of titanium alloy powder mixed with iron creates dense alloys that avoid element segregation while lowering production costs.

Automated loading apparatus manages metal charge deposition in melting furnaces, reducing manual intervention while optimizing energy use and product quality.

Nitric acid solvent extraction isolates transition metals while minimizing equipment corrosion and avoiding aggressive inorganic reagents.

A heap leaching process dissolves yttrofluorite ore using mineral acid solutions to recover yttrium and rare earth elements.

Molten salt reduction separates vanadium oxides from nickel and molybdenum to prevent cross-contamination in recovered alloys.

A cold-rolled steel plate uses controlled carbide dispersion to balance heat resistance and wear performance.

Selective precipitation isolates rare earth elements from acid leachates, improving extraction efficiency and economic viability.

Salt roasting oil fly ash at 650°C produces a water-soluble vanadium leach solution, avoiding caustic agents.

Segmented burner-lance design with releasable nozzles and cooling tubes reduces thermal stress and eliminates full-unit dismantling for maintenance.

Omitting intermediate annealing simplifies semi-processed electrical steel manufacturing while maintaining permeability and core loss properties.

Metallurgical extraction technique recovers platinum group metals from filter cake slurry using hot alkaline cyanide leaching and cementation.

Physical sorting by atomic number isolates cesium-rich ore, reducing lithium interference and lowering processing costs.

Optimizing carbon and chromium levels creates a martensitic structure that delivers high tensile strength without relying on expensive alloying elements.

Hot-rolled steel sheet with controlled Si and Al content achieves high magnetic flux density while maintaining low iron loss and recyclability.

A melting method separates nickel and vanadium from molten petroleum waste byproducts using a calcium-based additive layer.

A fluidized bed system processes powdered iron ore using parallel preheated coal gas streams to accelerate reduction kinetics.

Optical sensors detect furnace radiation to generate emission signals for automated damper pressure adjustment.

Roasting lithium-ion batteries enables wet separation of valuable materials from metal cases, eliminating iron contamination and dust explosion risks.

A horizontal preheater heats metal feedstock using direct burners and post-combustion reactions within dual tunnel sections.

An articulated lift cylinder minimizes constraint forces on guide bearings, reducing material stress and extending maintenance intervals.

Oxalic acid solubilizes lithium manganese oxide at mild temperatures for high-purity recovery.

Polyalkylene oxide copolymers prevent clay swelling to maintain percolation rates during precious metal extraction.

A rotatable burner panel uses a helical cooling circuit to maintain thermal stability during operation.

Calcium chloride agglomeration modifies mineral structure to enhance copper extraction rates in primary and secondary ores.

Closed-loop extraction recovers uranium, thorium, and rare earths from monazite slag while eliminating radioactive waste discharge.

Precise control of Mo, Ni, and V content in spring steel maintains fatigue life above 500,000 cycles while reaching tensile strength over 3000 MPa.

A continuous solvent extraction method isolates transition metals using a neutral extractant and acid washing steps.

Closed reactor leaching of copper sulphide ore uses oxygen recirculation to oxidize ferrous iron, reducing grinding energy costs.

A method recovers rare-earth elements from bauxite residue using acidic leaching and phosphoric acid ester extractants.

A hydrometallurgical method for extracting rare earth elements and niobium from ore concentrates using selective precipitation and pressurized acid leaching.

Chloride leaching replaces cyanide to recover gold while eliminating toxic waste generation.

A dual gas flow path system recycles heated top gas to lower coke consumption while preventing thermal shock damage during operational interruptions.

Heat pipes cool refractory lining in smelting vessel hearth to reduce wear from molten slag contact.

A convexly curved phase splitter directs liquid flow to reduce entrainment and improve separation efficiency.

A chloride-based leaching method recovers metals from metalliferous materials using atmospheric pressure processing.

Submerged plasma torch injects oxygen-bearing gas into molten bath to heat charge, achieving cobalt concentrations below 0.1% in slag.

Integrated cooling channels within the roof liner prevent slag adherence and weight accumulation on exposed pipes.