Process Efficiency Improvement TRIZ Cases

Selective stripping with nitrobenzene derivative, ethylenediamine, and ammonia removes Ni plating while preserving magnet properties.

Alternating laser irradiation directions curb stress variation from absorber thickness changes, producing more uniform compressive residual stress.

Real-time sulfuric acid flow adjustment keeps laterite nickel leaching at the optimal acid-to-ore ratio, improving efficiency and lowering cost.

Superheated twin-roll casting with controlled Si and C preserves θ-fiber texture and magnetic properties in thin electrical steel strip.

Low final cold reduction and optional inter-annealing balance alpha and beta fibers to reduce anisotropy, roping, earing, and spoilage.

Continuous casting and annealing keep recycled-can aluminum within target chemistry, delivering strong, low-earing sheet for drawn and ironed cans.

Recycled aluminum pellets with carbon compounds cut deoxidizer cost and energy use while avoiding organic pollutant generation in steelmaking.

Controlled alloy chemistry and heat treatment turn recycled aluminum scrap into formable sheet with spherical intermetallics and strong ductility.

Multi-direction laser spot expansion reduces residual stress variation along a target surface area during laser peening.

Increasing moving average laser intensity during spot scanning curbs residual stress variation and keeps surface treatment more uniform.

A two-stage cold rolling route with optional inter-annealing balances alpha and beta fibers to reduce anisotropy and improve sheet formability.

Controlled alloy chemistry and heat treatment enable high recycled scrap content while preserving aluminum strength, formability, and elongation.

Controlled Si, Fe, Mn, and Cr levels let recycled aluminum retain high formability and strength through casting and heat treatment.

Alloy additions balance recycled aluminum scrap during melting to limit hot cracking and deliver strong, formable cast coil without primary aluminum.

Alloying recycled aluminum scrap with magnesium, silicon, and copper improves castability, limits hot cracking, and preserves high recycled content.

Laser irradiation through liquid removes valuables-containing layers without powder scattering, reducing loss, waste, and base material damage.

Multiple hot rolling steps spheroidize iron-rich particles in recycled aluminum, preserving strength, formability, and elongation.

Controlled alloying and casting routes help thick steel plates keep core quality, crack resistance, strength, and -40°C toughness.

Controlled martensite, grain size, and Mn/P segregation improve abrasion resistance while limiting delayed fracture and gas cutting cracking.

Controlled Mg, Si, or Cu additions let recycled aluminum scrap cast into strong, formable coil without heavy purification or primary dilution.

Nitrogen-based micro-alloying and standard rolling create H-beams that balance 460 MPa yield strength with strong -40°C impact toughness.

Thermally decomposing particulate around a calcium rod releases a gas shroud that limits oxidation, cuts splashing, and improves molten metal refining.

CO2 precipitates lithium carbonate from lithium sulfate and lithium hydroxide liquor, avoiding sodium sulfate buildup and costly purification steps.

Composite agglomerated stones sink through slag to carburize liquid pig iron above 2.5% carbon while adding metal output in electric furnaces.

Controlled heating, pressure, and periodic rolling create a thicker residual compressive stress layer in ceramics without crack initiation.

Ultrasonic treatment and a Ra-226 adsorbing carrier simplify recovery from solid sources, improving purity and yield while reducing handling steps.

Rotating impact members dislodge slag from solid fusion mix samples, enabling fast, high-purity collector separation with less manual handling.

A two-stage solvent extraction route separates Mn first, then Ni and Co, improving sulfate purity and avoiding sodium-driven salt formation.

A sealed reactor holds ORP at 500 mV or higher to speed copper leaching while limiting iodine volatilization loss.

Molten KOH with air or oxygen breaks down ruthenium-containing solids without nitrate, cutting NOx emissions and simplifying ruthenate recovery.

High-energy milling with NaCl or MgCl2 enables selective lithium leaching from clay while reducing aluminum, iron, and acid use.

Strong sulphuric acid converts zinc ferrites for leaching, while iron circulation cuts waste and energy in EAF dust recycling.

A vertical mixer-settler arrangement cuts installation footprint while preserving density-based solvent separation and extraction efficiency.

Countercurrent sorption leaching with carbonate-bicarbonate pulp and ion exchange raises scandium recovery from red mud while cutting acid waste and cost.

Ozone oxidation and staged pH adjustment separate cerium, medium/heavy rare earths, and lanthanum with fewer steps and easier scale-up.

Removable pellet cartridges, resistive heating, and vacuum condensation cut magnesium smelting labor, energy use, and batch cycle time.

A recirculating base column precipitates uranium from uranyl nitrate waste, easing handling and converting toxic nitrate salts into usable oxides.

Chelate resin captures lithium ions from dilute solutions, then acid elution recovers them quickly with less sludge and fewer impurities.

Using trona or soda ash, this case buffers sulfide ore heaps at pH 8-10 to prevent precipitates and improve gold and silver recovery.

Rotary oven heating, Al addition, and flux segregation recover zinc trapped in dross, raising yield while cutting energy use and waste.

Two-stage grinding tunes neutralizer size and shape to raise iron-aluminum removal and cut nickel, cobalt, and manganese loss.

Temperature- and pH-switched ionic liquids selectively recover rare earths from coal ash while avoiding corrosive reagents and extra separation steps.

Continuous AMD treatment recovers a solvent-extraction-ready rare earth concentrate while avoiding gel or emulsion formation.

Membrane separation and vaporization speed lithium recovery from brine, cut water handling, and raise yield while reducing impurities.

Selective redox leaching removes iron and sulfur from low-grade ore concentrates at ambient conditions, improving nickel recovery with reagent recycling.

Controlled cooling in molten Sn crystallizes and separates Si before recovering solid Al, helping remove Si, Fe, and Cu from aluminum scrap.

Controlling sulfate, pH, aeration, and temperature keeps microbes active in heap leaching, improving copper recovery from sulfidic ores.

Chloride-selective AuCl4− extraction and direct reduction produce 99.995% gold powder while recycling solvents and eliminating waste discharge.

A tuned Al-Si alloy composition balances die-cast fluidity with strength and toughness without heat treatment, including recycled feedstock use.

Alkaline dissolution of silicon dioxide-supported waste catalysts enables simpler precious metal recovery with high yield and filtrate metal content of 1 ppm or less.

A recycled die-casting aluminum composition balances strength, thermal conductivity, weather resistance, and lower cost versus ADC12.

Living marine macroalgae absorb rare earths and lithium from saline effluents, using tuned pH, salinity, and circulation for scalable recovery.

Copper-enriched slag is reused in repeated smelting cycles to raise copper recovery from e-waste while improving reactor energy balance.

Staged cooling in molten Sn separates Si, Fe, and Cu from aluminum alloys, improving scrap recyclability and recovered Al purity.

Acidifying filtered electrode washing solution converts lithium carbonate or hydroxide to soluble lithium sulfate, avoiding precipitates during concentration.

This case pools residual MRI contrast agents and uses ion exchange, solvent extraction, and precipitation to recover rare-earth elements.

Organosulfonic acid and oxidizing agent dissolve rare earth metal borides, resolving high energy consumption in recycling.

Modular panels in a rotatable drum cool white slag via indirect fluid circulation, reducing water consumption and equipment wear.