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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium PbZn 2020: The 9th International Symposium on Lead and Zinc Processing
Presentation Title A New Route for Treating Neutral Leaching Residue
Author(s) Caio Cesar Spindola Oliveira, Daniel Dayrell Pereira, Felipe Ramos Pereira Mendes
On-Site Speaker (Planned) Caio Cesar Spindola Oliveira
Abstract Scope In the zinc smelter acid leaching process, sulfuric acid is added to the neutral leach residue until 45-60 g/L free acidity. Usually, this step is very efficient (92%). However, it also makes iron and others impurities soluble. Because of that, the solution must goes to some iron removal step (jarosite for example). In this work, we compared this method to the sulfatation process. By simulating the roaster gas outlet (8% of SO2), at 650C, in a fluidized bed reactor (2 kg/h), we were able to solubilize 92% of the Zinc, and only 16% of the iron. That means, no excess acid was required in order to obtain the Zinc, and less acid was spent with iron (smaller residue was obtained because hematite occupies 67% less mass than jarosite). With these results, we may improve acid balance, residue reduction, and raw materials consumption in a Zinc plant.
Proceedings Inclusion? Planned:

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Critical Review on Generation, Characteristics, and Utilization of Zinc Slag
A Dynamic Model of a Submerged Plasma Slag Fuming Process
A New Era in Smelting Sustainability - Intensification of the Outotec® Ausmelt Top Submerged Lance (TSL) Process for Zinc Production
A New Innovative Method of Flotation Separation for High Sulfur Lead–zinc Sulfide Ore
A New Route for Treating Neutral Leaching Residue
A Novel Collector 5-(butylthio)-1,3,4-thiadiazole-2-thiol: Synthesis and Improved Flotation of Galena and Sphalerite from Pyrite
A Review of Zinc Smelting and Refining in North and South America
Advanced Technologies Reliant on the Properties of Lead
An Overview of Technology Developments in Zinc Processing Around the World
Bulk Zn / Pb Concentrate Treatment with the Albion Process™ at Nordenham Zinc Refinery
Characterization and Processing of Residues from Hydrometallurgical Zinc Smelters
Characterization of Phase Equilibria and Thermodynamics with Integrated Experimental and Modelling Approach for Complex Lead Primary and Recycling Processing
Complex Lead and Zinc Feed Treatment through Combining ISASMELT™ and Albion Process™
Contributions of Non-ferrous Smelters to Metal Resource Circulation in Japan
CORETM – Advances in Sulfuric Acid Technology
Developing a Sustainable Global Lead Battery Value Chain
Development of the New Zinc-separation Process for the Blast Furnace Dust
DigMet – Advantage through Know-how and Digital Innovation
Driving Innovation in Lead Batteries: The Focus of the Consortium of Battery Innovation
Effect of Deposit Types, Mine Development and Industry Structure on Primary Lead and Zinc Economics in Australia, North America and Europe
EPD Distinguished Lecture: "Around the Lead and Zinc Metallurgical World in Eighty Days" A Virtual Tour of World Lead and Zinc Operations and Technologies
Evaluation and Certification Strategies for Lead-zinc Bearing Residues
Evaluation of Anodic Oxygen Evolution Activity and Durability of MnOx Electrodeposited Catalysts for Zinc Electrowinning
Evolution of Global Secondary Lead Production
Experience with Digital Process Optimization of Zinc Roasting Plants
Hydrometallurgical Recovery of Tin from Harris Dross
ILTEC Technology – New Pathways Towards Safe and Effective Cooling
Improving the Byproduct Availability in Zinc Production: an Alternative Extraction Process for Indium
Increase in Zinc Recovery from a Silicate Concentrate by Pre Neutralization Process
Increasing Current Efficiency To 93% In Jumbo Cellhouse At Vedanta’s HZL Tank House
Increasing Plant Efficiency & Capacity
Influence of Minor Elements in Waste Lead Battery Recycling
Innovative Solutions in Non-ferrous Metals Production
Installation of a Brown Field Slag Reduction Furnace: State of the Art Off-gas Treatment with Dry Gas Cleaning for SO2 Capture
KCM – Innovator in the Pb Metal Production through Ausmelt Technology and Variable SO2 Concentration Off-gas Utilization
Kinetic Aspects of an Innovative Technology for the Reprocessing of ISF Slag
Leaching of Turkish Oxidized Pb-Zn Flotation Tails by Inorganic and Organic Acids
Lead and Zinc Extractive Metallurgy Research in the Kroll Institute for Extractive Metallurgy
Lead and Zinc Smelting Technology in China under Green Development
Lead Metal Production at Paroo Station Mine Using Leach-electrowinning Process in Methane Sulfonic Acid Solution
Lead Plant Transformations
Long Service Life of Removable Roof at Hindustan Zinc
M-79: Reaction Mechanism on A Novel Enhanced Smelting Technique for Lead-acid Battery Paste Recycling
Magnetic Separation of Iron Ion from Leaching Solution by Magnetic Seeding in Hydrometallurgy
Material Stewardship for Zinc
New Technology for Copper Removal from Lead by Application of Aluminium: Practical Problems
Nucleation and Growth of Lead Sulfate Nanoparticles
Numerical Simulation of Gas-liquid Flow Mixing Effect in Bottom-blown Bath
Operational Overview of RSR North America Corp.
Opportunities for Concentrating Solar Thermal Energy in Pb and Zn Flowsheets
Optimization of Arsenic Removal Process in Waste Acid from Zinc Smelting Plant Based on Orthogonal Experiment
Optimizing Additive Ratios in Alkaline Zincate Electrodeposition
Our Common Future in Metallurgy
Outotec Gypsum Removal Circuit and Outotec Cooling Tower Performance in Neutral Solution Cooling
Pb & Other Impurities Recovery from Cu Smelting Residues in JX Nippon Mining & Metals
Performance and Mechanism of Chlorine Removal in Wastewater by Combination of CuSO4 and Zero-valent Copper
Processing of Polymetallic Materials Requires Flexible and Capable Downstream Refining Technology: Aurubis Lead Refinery as Economic, Modern and Well Integrated Plant at the Site Hamburg
Processing Technology of Zn-Al Alloys into Wires for Thermal Spray Applications
Production and Application of Comprehensive Recovery Process of Regenerated Zinc
Production of SHG Zinc from 100% Recycled Materials
Purification and Comprehensive Recovery Metal Values from Zinc Hydrometallurgical Solution
Pyrometallurgical Recovery of Valuable Metals from Flue Dusts of Copper Smelter through Lead Alloy
Recent Development of EAF Dust Treating at Shisaka Smelting Co., Ltd
Recent Improvements at Hosokura Lead Smelter and Refinery
Recent Operation at Hachinohe Smelter
Recent Operational Improvements of Hematite Plant at Akita Zinc Co.,Ltd
Recovery of Lead from Zinc Plant Residue by Alkaline Leaching Process Followed by Cementation
Recovery of Zinc From Oxide-sulphide Zinc Ore through Oxidation and Chelation
Recycling of Zinc from Galvanized Steel Scrap
Reduction of Lead Rich Slags with Coke in the Lead Blast Furnace
Refining of Zinc Chloride by the Combination of Cementation Reaction and Vaccuum Distillation
Refractory Challenges in Lead and Zinc Furnaces
Refractory Corrosion Comparison through a Rotary Drum Furnace Slag Test for the Lead Industry
Refractory Solutions by Laboratory Tests and Fieldworks for Lead Recycling Applications
Regional Changes in Refined Zinc Output and Demand
Research and Application of Oxygen-enriched Side-blowing Continuous Smelting Technology for Lead-antimony-silver Complex Materials
Resource Efficiency Evaluation of Pyrometallurgical Solutions to Minimize Iron-rich Residues in the Roast-leach-electrowinning Process
Review of Waste Water Treatment Technologies Used in Lead Recycling
Separation of Zinc from Metallurgical Residue in NH3–(NH4)2SO4–H2O System
Shape and Size Modification of Galvanized Steel Scrap for Introduction to the "HIsarna" Furnace
Side Submerged Combustion Bath Smelting Technology ——A New Process for Recovering Lead from Lead Paste of Waste Lead-acid Battery
Simulation of an Alternative Direct Leaching Process for High Iron Content Zinc Concentrates
Slag Reduction Kinetics of a Lead Slag from a Secondary Lead Smelter
Smelting Jarosite and Sulphur Residue in a Plasma Furnace
Start-up and Improvements of the New Electrolysis Plant at Annaka Refinery
Studies on the Formation of Intermetallic Compound Layers in Co(W)-Zn Diffusion Couples
Technologies for Treatment of Zinc-containing Waste from Metallurgy in KCM AD
The EZINEX® Process for Secondary Zinc Bearing Materials
The FAST Pb Process and Its Impact on Secondary Lead Production
The Global Zinc Market - Facts, Forecasts and Fundamentals
The Importance of Lead in the Supply Chain of Antimony
The Mass Transfer Characteristics of Ozone Oxidation of Rare Scatted Metal Impurities in Zinc Sulfate Solution
The Removal of Arsenic from Lead Bullion via Vacuum Distillation
The UrbanGold Technology for Enhancing Metals Recovery and Efficiency in WEEE Recycling
Tin Treatment in Kosaka Lead Smelting
To Polarize or Not to Polarize: Practical Advice on How to Control Zinc Electrodeposition
True Traceability Enabled by In-line Laser Marking of Lead and Zinc Ingots
Two Step Dust Recycling – A Modern Recycling Technology for High Zinc Containing EAF-dusts
Zinc Extraction from Industrial Waste Residue by Conventional Acid Leaching
Zinc Plant Expansion and Modification for Increased Metals Recovery
Zinc Reduction/ Vaporization Behavior from Metallurgical Wastes
ZnSO4.H2O Thermal Decomposition in the Presence of Reducing Agent (S2) and Catalyst (Pd)

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