国家/地区 中国（3）
IPC部 B（3）
IPC大类 C22（3） B01（2） C02（2）
C25（2）
IPC小类 C22B（3）
IPC C22B007/00（3）
发明人
公开年 2021（3）
申请年 2020（2） 
专利权人

Treating gold smelting wastewater by quality comprises e.g. mixing impurity-removing and reduction waste water in acid waste water, supplementing treatment of electrolyzed water in alkaline wastewater, returning fresh water to production system, and using desalinated water as supplementary water.

QIU J, LAI B, JI C, WU Z, WU W, SUN G, LIN F

Graphene composition useful for adsorbing gold ion in gold-containing solution comprises thiourea graphene zeolite.

HSI H, CHEN Y, CHEN T, TSAI C, XI X

Recycling metal in waste circuit board comprises e.g. gradually heating and separating according to metal melting point to obtain gold, palladium, platinum and rhodium powder after placing solid mixture in flexible carbon felt electrolysis.

LAI Z, ZHONG Z, WANG J, ZHANG X, ZHONG Y, LAI Y, CHEN L