Roasting of Gold and Silver Ores: And the Extraction of Their Respective Metals Without Quicksilver (Classic Reprint)

Master the art of roasting and chloridizing silver ores to improve yield and efficiency.

This guide surveys practical methods used to treat argentiferous ores, focusing on the roasting processes that prepare ore for chlorination and leaching. It covers equipment, operation, and how to balance fuel, salt, and heat to maximize metal recovery. The material presents a range of furnace designs and continuous feeding systems, from rotating reverberatories to mechanical furnaces. It explains how to achieve high chloridization and how steam and chlorine gas are applied in different roasting scenarios. Readers will gain a clear picture of the steps involved in preparing ore for chemical extraction and the considerations needed for successful operations at scale.

• Overview of chloridizing roasting and its role in silver and gold extraction
• Descriptions of different roasting furnaces and how they handle ore flow and heat
• Practical notes on salt use, dechlorination, and managing byproducts
• Step-by-step considerations for optimizing chlorine gas impregnation and subsequent lixiviation