Method of pretreatment and bromine recovery of PCB incineration ash

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11198615
APP PUB NO 20200262712A1
SERIAL NO

16348506

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method of pretreatment and bromine recovery of PCB Incineration ash is disclosed that relates to the field of comprehensive recovery of valuable metals by full wet method, especially relates to a method of valuable metals and bromine recovery, precious metals enrichment in pretreatment process of PCB Incineration ash. The major steps includes alkali leaching, Cu extraction back-extraction, neutralization-precipitation to separate, Bromine evaporative crystallization, regeneration, acid pickling, Zn evaporative crystallization, removal of Zn and Cu. Compared with the traditional comprehensive recovery process of ash, the invention can separate bromine from ash and recover valuable metals such as copper, zinc and lead with the maximum extent, at the same time, the enrichment of silver and other precious metals is beneficial to the subsequent recovery of precious metals. It has high added recovery value and no tailless discharge.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
BEIJING UNIVERSITY OF TECHNOLOGY100124 NO 100 CHAOYANG DISTRICT PING TIAN PARK BEIJING BEIJING CITY BEIJING CITY 100124

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Bin Beijing, CN 1200 10531
Pan, Dean Beijing, CN 15 1
Wu, Yufeng Beijing, CN 35 54
Zuo, Tieyong Beijing, CN 8 25

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Jun 14, 2025
7.5 Year Payment $3600.00 $1800.00 $900.00 Jun 14, 2029
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jun 14, 2033
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00