Process Efficiency Improvement TRIZ Cases

Vaporizing coal-derived rare earth concentrates separates germanium and gallium, achieving 90% purity while eliminating complex chemical reagents.

HCl and chlorate leach iron sludge to remove zinc and lead, avoiding hazardous chlorine gas.

Water-in-oil emulsion transfer in hollow fiber contactors reduces metal loss in raffinate and improves process yields.

Oxidative leaching and carbonate precipitation recover lead and silver from hydrometallurgical residues.

Optimized aluminum alloy composition enables cost-effective die-casting using recycled scrap materials.

Calcium salt leaching extracts lithium ions from waste glass particles at moderate temperatures.

A method recycles lead from waste glass using alkaline roasting and polycarboxylic acid leaching to produce purified chemical products.

Controlled niobium residues in austenitic stainless steel improve strength and ductility while preventing liquation cracking.

Buried pipes collect leached rare earth elements from fly ash, reducing groundwater contamination risks while enabling efficient material recovery.

Low-temperature sulfuric acid leaching decomposes fluorine-rich rare earth minerals while recycling residual acid to lower extraction costs.

Multi-stage grinding and flotation liberate uranium minerals from chalcopyrite for efficient magnetic removal.

Leaches platinum from membrane-electrode assemblies with dilute acids to avoid high-temperature pyrometallurgy.

A noble metal recovery kit uses an adsorbent to extract precious metals from acidic solutions.

Controlled oxidation-reduction potential prevents sulfur dissolution while bromide accelerates gold recovery from copper residues.

A leaching composition using organic aprotic solvents and charged hydrotropes extracts lanthanides from solid waste materials.

Granulated raw materials with electron donors support microbial oxidation, replacing high-temperature processing to extract rare earth metals efficiently.

Heated detergent cleaning removes surface contaminants from magnesium scrap, reducing dross formation during remelting and improving recycling efficiency.

Controlled inner oxide layer prevents silicon enrichment, resolving the trade-off between high strength and reliable phosphating coverage.

Fluorine compounds dissolve lithium from aluminosilicate particles at low temperatures, avoiding high-energy phase transformations.

Selective oxidation converts lead sulphide to insoluble compounds, enabling efficient flotation separation while minimizing zinc contamination.

Size-based segmentation of low grade uranium ore reduces downstream mass and volume, lowering capital costs.

Roasting and leaching red mud concentrates rare earth metals, resolving environmental hazards from Bayer process waste.

Intermediate solubility metal sulfides selectively precipitate heavy metals, eliminating costly gas recycling systems and reducing chemical inputs.

A bulk ion exchange step concentrates secondary metals from copper SX-EW raffinate into a smaller volume.

Carbo-chlorination separates metal values from aluminoferrous ores and residues, reducing energy consumption compared to conventional high-temperature smelting.

Aluminum powder reduces metal oxides in water to yield high-purity transition metals, lowering energy consumption and production costs.

Titanium and controlled aluminum create equiaxed grains to improve formability without hot band annealing.

Microwave-assisted comminution creates defects in coal fly ash particles to enhance acid diffusion.

Photochemical oxidation with ferric oxalate and hydrogen peroxide achieves over 97% platinum recovery while eliminating toxic chlorine gas production.