Fluidized Bed Roaster for Refractory Gold Ore Processing with 12-24 Hour Leaching and Direct 99.99% Pure Gold Production

Gold is often locked within sulfide minerals like pyrite and arsenopyrite as fine-grained or sub-microscopic particles. The cyanide leaching solution cannot access and extract the gold without first breaking down these host minerals.

The conventional gold extraction process primarily relies on two core technologies: "Flash Leaching" and "One-Step Gold Reduction." The well-established cyanidation method typically requires a leaching time of 36 to 96 hours. The entire cycle—from carbon adsorption and stripping to elution, electrolysis, and finally producing finished gold—usually spans 15 to 30 days, with a recovery rate generally between 50% and 70%.

In contrast, the new extraction method achieves leaching in just 12 to 24 hours and enables direct production of 99.99% pure gold from the pregnant solution. Furthermore, the entire process is environmentally friendly; the leaching agent is non-toxic and harmless, even possessing disinfectant properties. The leachate can be fully recycled after use, achieving true zero discharge of chemicals.

The presence of reactive components in the ore can severely hinder gold dissolution. These components engage in competitive side reactions with both cyanide and oxygen, resulting in excessive reagent consumption and significantly impeding the leaching process.

Henan Zoomline Machinery Manufacturing co. Ltd is located in Wen County, Jiaozuo City, Henan Province. It is mainly engaged in the production and installation of mining equipment and building materials equipment, as well as the relevant process design, equipment production and installation of harmless treatment of industrial waste. Many senior executives and engineers of the company have accumulated a large amount of industrial solid waste, such as fly ash, chromium slag (chromium mud), papermaking white mud, carbide slag, smelting waste slag, coal gangue, pyrite slag, industrial sludge, construction waste and other industrial solid waste treatment front-line practical experience over the years. In recent years, it has cooperated with many research institutes, colleges and universities and technical researchers from all walks of life to learn from each other's strengths and weaknesses, so that our company has made significant improvements in process technology and project construction experience in multiple sub-sectors.

Based on the deep cultivation of traditional R&D, production, manufacturing and sales, our company has fully explored the needs of customers in three dimensions: quality, efficiency and price in recent years. Adhering to the principle of customer-centricity, we deeply integrate the upstream and downstream supply chains and establish a large-scale data information database of raw materials, second-hand or idle equipment in many provinces and cities across the country, aiming to provide customers with a one-stop overall solution with rich equipment categories with greater flexibility, and greatly reduce the cost of customer procurement-----Providing suitable, timely and affordable products to customers all over the

world is the mission of Zhonglan people.

Our company implements technological innovation, market orientation, management improvement and employee development as the basis, pays attention to customer value and assumes social responsibility. We are committed to becoming "the industry's leading provider of overall solutions for harmless treatment of industrial waste."