国家/地区 中国（4）
IPC部 B（5）
IPC大类 B01（5）
IPC小类 C02F（5）
IPC C22B007/00（5）
发明人
公开年 2021（3）
申请年 2021（2） 
专利权人

Adsorbent useful for recycling noble metal, comprises nitrogen-doped graphene-silicon dioxide hybrid material, where the nitrogen-doped graphene- silicon dioxide hybrid material includes nitrogen doped-silicon dioxide graphene material.

ZHANG L, LIU J

Preparing amino-rich polyacrylonitrile-based nanocomposite fiber film used for removing and recycling gold, involves mixing N,N dimethylformamide dispersion of graphene oxide and the N,N-dimethylformamide solution of hyperbranched polyethyleneimine and performing amidation reaction.

ZHONG X, MENG W, YANG H, SHI X, LI X, LI T, MA Y

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

Fluid capacitive deionization and device for recovering trace rare precious metals from inorganic wastewater and recycling water, comprises a selective positive ion exchange sulfide membrane graphene coated porous carbon material.

WANG H P, CHENG H C