Zinc Sulates TRIZ Cases
- Mn-Zn Ferrite Composite from Waste Residues via Stepwise Purification
Stepwise roasting, leaching, and purification turn manganese and zinc waste residues into high-purity Mn-Zn ferrite feedstocks with lower energy use.
- Chloride Removal from Zinc Sulphate via Copper(I) Oxide
A sidestream of zinc sulphate solution undergoes pH adjustment to 4.5-5 for copper(I) oxide formation and subsequent chloride removal.
- Waste PCB Slag and Soot Recycling via Mixed Roasting
Mixed sulfuric acid roasting converts stable bromides in waste circuit board slag and smelting soot into volatile forms for removal.
- Three-Stage Hydrometallurgical Zinc Electrolyte Purification
Counter-current washing and autoclave leaching remove chlorine and fluorine impurities from Waelz oxide, enabling high-purity zinc electrolyte production.
- Iron Recovery from Zinc Sulfate via Hematite Precipitation
A method recovers iron from zinc sulfate solution by conditioning the fluid and precipitating hematite under moderate pressure.
- Two-Step Alkaline Leaching for Bromine Recovery from PCB Ash
Sodium peroxide oxidation converts insoluble cuprous bromide into soluble ions, resolving low recovery rates while minimizing secondary wastewater discharge.
- PCB Incineration Ash Bromine Recovery via Alkali Leaching
Alkali leaching separates metals from PCB incineration ash, enabling bromine crystallization and high-yield precious metal enrichment.
- Dilution Solution for Free Cortisol Measurement
Zinc sulfate precipitation isolates free cortisol from serum proteins, enabling accurate measurement without complex sample pretreatment delays.