Process Efficiency Improvement TRIZ Cases
- Selective Metal Oxidation in Alloy Purification
Simultaneous fragmentation and oxidation of molten alloys purifies base metals above 90% while producing engineered metal compounds.
- Tungsten Recovery via Organic Electrolysis
Organic electrolytic solution dissolves tungsten from raw materials, avoiding ammonium nitrate explosion risks and multistage purification.
- Rare-Earth Recovery from Environmental Barrier Coatings
Acid leaching and oxalate precipitation recover high-purity rare-earth oxides from contaminated environmental barrier coating scrap.
- B2O3-Mn2O3 Additive for Magnetite Pellet Roasting
A B2O3 and Mn2O3 additive lowers magnetite pellet roasting temperature by promoting Fe2+ movement through a trace fluid phase.
- Exhaust Hood Overflow System for VOC Capture
An evacuated hood overflow system draws escaping volatile organic compounds into a manifold and eductor for recycling.
- Hybrid Reactor Oxidizing Preg-Robbing Organic Carbon
A hybrid reactor system oxidizes organic carbon material in ores using elevated temperature and pressure.
- Hollow Fiber Membrane for Dysprosium Separation
Supported membrane solvent extraction transports dysprosium through hollow fibers, resolving equilibrium limitations in rare earth separation.
- Electric Arc Furnace Nitrogen Reduction via Inert Atmosphere
An electric arc furnace uses inert gas to lower nitrogen concentration in steel melts.
- Aluminum Scrap Sorting via Electrical Conductivity
Eddy current sensors measure electrical conductivity to differentiate aluminum alloys, resolving density-based sorting limitations.
- Lithium Recovery via Metal Oxide Catalyzed Calcination
Metal oxide catalysts enable lithium extraction using dilute sulfuric acid, reducing chemical waste and disposal costs.
- Aluminum Scrap Recycling via Molten Salt Density Separation
Density-based phase separation removes iron compounds from recycled aluminum without complex filtration.
- Thiourea Leaching of Refractory Sulfidic Ores
Replacing cyanide, thiourea leaching achieves over 95% gold recovery from refractory sulfidic ores while minimizing base metal dissolution.
- Selective Manganese Leaching via Reduced Iron and Microorganisms
A leaching process using reduced iron and metal-reducing microorganisms to extract manganese from ore.
- Carbothermic Chromite Reduction with CaCl2 Catalyst
Calcium chloride catalyzes carbothermic chromite reduction at lower temperatures to produce segregated ferrochrome particles.