Gold CIP Production Line Based on Guinea Project Case

This article presents a detailed analysis of the Gold CIP (Carbon-in-Pulp) process. It will also showcase a real-world 3000TPD Gold Mine CIP Project in Guinea. Hope it work for you!

Understanding the Traditional Gold CIP Process

The conventional Gold CIP process involves several sequential steps to extract gold from cyanide-leached pulp. The process, refined over decades, typically includes:

1. Leaching Pulp Preparation & Cyaniding Leaching

   Impurity Removal: Before leaching, impurities like wood chips are removed to prevent interference with active carbon adsorption.

Cyaniding Leaching: Ore is treated with sodium cyanide (NaCN) to dissolve gold, forming a stable gold-cyanide complex.

2. Carbon Adsorption

   Activated carbon is added to the leaching tank, where it adsorbs the gold-cyanide complex, creating gold-loaded carbon.

3. Desorption Electrolysis

   Under controlled high-temperature and high-pressure conditions, the gold-loaded carbon undergoes desorption in a closed system. This step efficiently separates the gold (in the form of gold mud) from the carbon. Systems have achieved desorption rates exceeding 96% when the gold-loaded carbon grade reaches 3000 g/t.

Notably, modern adaptations allow the process to run without additional NaCN during desorption, minimizing both environmental impact and costs.

4. Pregnant Solution Electrodeposition & Carbon Acid Regeneration

   Gold is recovered from the solution via electrodeposition, while the regenerated acid is recycled within the process, ensuring a sustainable loop.

5. Smelting

   Finally, after pickling and impurity removal, the purified gold is melted into high-grade ingots.

The system is versatile, supporting two types of ore: flotation gold concentrate (including amalgamation and gravity tailings) and mudded oxidized ore. These refinements have addressed challenges in adsorption efficiency, energy consumption, and processing time, setting the stage for further innovation.

The cnlite Advantage: Elevating the Process

cnlite represents a breakthrough in gold extraction technology. Its integration into the traditional CIP process introduces several critical benefits:

• Environmental and Energy Benefits:

     Unlike traditional methods that rely heavily on toxic chemicals, cnlite is almost non-toxic. In the context of global warming, people are increasingly aware of the importance of protecting the environment, especially the pollution of sodium cyanide to indigenous rivers in some areas. Cnlite can reduce the discharge of hazardous waste and meet the growing demand for sustainable mining practices.

• Improved safety measures:

     With automated pressure regulation, multi-level safety controls, and integrated safety valves, the system is engineered to operate securely even under extreme conditions, significantly lowering operational risks.

Case Study – Xinhai Mining’s 3000TPD Gold Mine CIP Project in Guinea

Project Overview

Xinhai Mining completed a 3000TPD Gold Mine CIP project in Guinea before—a region known for its challenging laterite ore bodies. Key project details include:

• Location and Ore Composition:
       The mine is situated in Guinea, Africa, where the gold deposit primarily consists of surface laterite ore. Approximately 80% of the ore is powdery clay containing granular gold, with an average grade of 1.0g/t. This ore composition necessitates specialized treatment due to its fine texture and      low recovery potential.

• Daily Processing Capacity & Process Flow:
       The processing plant is designed to handle 3000 tons per day, utilizing a comprehensive closed-circuit process that includes grinding, classification, leaching, desorption electrolysis, and smelting.

Comprehensive Solutions Implemented

Xinhai Mining’s approach to this project integrated several critical solutions to ensure optimal performance:

• Mineral Beneficiation & Testing:
       Upon receiving ore samples, Xinhai’s Research Institute conducted detailed analyses and it’s pilot tests to tailor the process parameters. This step was crucial for improving concentrate grade and recovery rates.

• Process Design & Equipment Customization:
       The Design Institute crafted a specialized carbon slurry process, considering local conditions and ore characteristics. This involved detailed planning across multiple engineering disciplines—mineral processing, water management, power supply, and civil engineering.

• Manufacturing, Delivery & Commissioning:
       A complete set of customized equipment was manufactured and delivered on schedule. The project also featured meticulous packaging, shipping management, and on-site installation. The installation team provided thorough technical training to ensure seamless operation upon commissioning.

Project Highlights

• Intelligent Automation & Video Monitoring:
       The plant’s automation system, paired with integrated video surveillance, facilitates real-time monitoring and data control, significantly boosting production efficiency.

• Innovative Steel Structure Design:
       To reduce civil work load and construction time, a combined steel structure plant was designed. This flexible and cost-effective approach allowed rapid assembly at the mine site without compromising structural integrity.

• Environmental Friendly:
       By employing cnlite, the project achieved a truly non-toxic processing method with reduced energy consumption and minimal environmental pollution, meeting international green mining standards.

If you need any articles on mineral processing that need the editor to publish, you are welcome to leave a message!