PDF

Studies on zinc recovery from technogenic waste

Marinela Panayotova, Vladko Panayotov

2021enzinc recoverytechnogenic wasteleachingenvironmental impactmetallurgyzincrecovery

Abstract

Language:

Results from laboratory experiments are presented on extraction of zinc available in waste from lead-zinc metallurgy, mixed with lead-zinc flotation tailings and some waste rock, by leaching it under atmospheric conditions with sulfuric acid (H2SO4) solutions (5 and 10 wt. %) and 30 % hydrogen peroxide in the temperature range of 25 - 80 oC, at leaching time 30 - 120 min. Material leaching with 10 % H2SO4 solution at 70 oC for one hour brings into pregnant leach solution (PLS) around 80 % of zinc available. Imposing an electrochemical impact during the leaching process increases the quantity of leached zinc by around 5 %. Direct electrowinning from the PLS obtains zinc metal of grade 75-76 %. The suggested treatment removes metals-pollutants from accumulated mixed technogenic waste therefore rendering it more environmentally friendly. Experiments showed that old mixed waste from mining, mineral processing, and metallurgy activities merits further studies as a secondary source of metals.

Download

Cite This Work

@article{b5047df4-28f4-41d5-8a52-ef8a9111eba4,
  title={Studies on zinc recovery from technogenic waste},
  author={Marinela Panayotova and Vladko Panayotov},
  year={2021},
  language={en}
}
TY  - JOUR
TI  - Studies on zinc recovery from technogenic waste
AU  - Marinela Panayotova
AU  - Vladko Panayotov
PY  - 2021
LA  - en
ER  -

Similar Items

Recovery of precious metals from e waste

Printed circuit boards (PCBs) from electronic gadgets at the end of their useful life period are currently being dumped in landfills or incinerated, c

2026enPDF

Challenges and opportunities in the recovery of gold from electronic waste

Mudila Dhanunjaya Rao, Kamalesh K. Singh

Rapid global technological development has resulted in increased production of electronic waste, which presents both challenges and opportunities in r

2023enPDF

Artificial intelligence-aided materials design: AI-algorithms and case studies on alloys and metallurgical processes

Rajesh Jha, Bimal Kumar Jha

This book describes the application of artificial intelligence (AI) and machine learning (ML) concepts to develop predictive models that can be used t

2022enPDF

The Nature of Solid Iron and Its Grain Structure

Unknown, Unknown

This study focuses on the fundamental characteristics of solid iron, which is predominantly composed of iron atoms and provides a basis for understand

2023enPDF

FEASIBILITY STUDY FOR RECOVERING PRECIOUS METALS FROM E-WASTE

ROPAFADZO JAMAKANGA

Printed circuit boards (PCBs) from electronic gadgets at the end of their useful life period are currently being dumped in landfills or incinerated, c

2014enPDF

Recovery of precious metals from electronic waste and spent catalysts: A review

Yunji Ding, Shengen Zhang, Bo Liu, Huandong Zheng, Chein-chi Chang, Christian Ekberg

This review examines current technologies for recovering precious metals (PMs) from electronic waste (e-waste) and spent catalysts, which together acc

2019enPDF