Your Professional Smelting Equipment Supplier
Darnal Group China, founded in 2004, is a leading enterprise in the metallurgy equipment sector, specializing in the design, manufacturing, and installation of advanced equipment for precious metal smelting. As a cooperative partner of Central South University (CSU), we leverage cutting-edge technology to offer comprehensive solutions for metallurgy projects, including copper, zinc, lead, gold, silver, and more. With a team of experts in metallurgy, automation, and environmental protection, we ensure high-quality production from our state-of-the-art facility in Changsha.
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Fully Automatic Selenium Refining SystemFully Automatic Selenium Refining System Fully Automatic Selenium Refining System, also known as Selenium Refining Production Line is a crucial system for extracting high-purity selenium, a vital -
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Smart Fire Assay SystemSmart Fire Assay System Fully Automated, High-Precision Solution for Precious Metal Analysis For precious metal refineries, mining labs, and jewelry testing centers seeking to upgrade from manual -
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Anode for Metal ElectrolysisAnodes play a vital role in hydrometallurgy, particularly in the electrolysis and electrowinning processes used to refine copper, zinc, and other metals. In copper and lead electrolysis, the anodes -
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High-Selenium Anode Slime Treatment Project Anode Slime T...5.4 High-Selenium Anode Slime Treatment Project Anode Slime Treatment Project Overview This project focuses on the treatment of anode slime, processing between 100 to 800 tonnes per year.
Why choose us
Expert Metallurgy Design
We offer comprehensive design services for metallurgy projects, providing tailored solutions to meet specific needs in smelting and refining of metals such as gold, silver, copper, and more.
Advanced Equipment Technology
Darnal specializes in high-quality equipment for metal smelting and refining, including vacuum metallurgy systems and traditional smelting furnaces, ensuring efficiency and high-purity metal extraction.
Sales Markets
Our products are sold to several countries including Japan, Russia, Turkey, and Thailand, demonstrating our ability to meet diverse client needs and expand our international reach.
Service Advantages
We provide full installation guidance, operation training, and ongoing maintenance to ensure the long-term performance and reliability of our equipment.
Smart Fire Assay System, reveals the exact gold content in precious metal samples through complete melting and metal separation. During this process, the sample melts at high temperatures, allowing assayers to separate and measure pure gold from other metals and impurities. The method can create precise results because it analyzes the entire sample.
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Parameter |
Specification |
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Daily Throughput |
Up to 300 samples/day (25 samples/batch) |
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Dosing Precision |
±1g (general reagents); ±0.3g (critical additives) |
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Control System |
Siemens PLC + ProfiNet Networking |
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Process Coverage |
Batching → Mixing → Melting → Casting → Demolding → Ash Blowing |
High Automation
The intelligent fire assay system automates the entire process from raw material preparation to gold separation, significantly reducing manual intervention and improving testing efficiency.
Intelligent Control
The system employs intelligent algorithm scheduling, automatically generating production formulas and enabling interconnected and interlocked automatic operation between equipment via a bus. Simultaneously, the system possesses an autonomous decision-making scheduling algorithm, coordinating the execution of automated process actions by various subsystems to ensure conflict-free operation throughout the entire process.
High Accuracy
The intelligent fire assay system utilizes high-precision sensors and intelligent algorithms to ensure stable and reliable test results, meeting national and international standards.
Strong Safety
The system uses robotic arms to replace manual labor in high-risk operations at the electric furnace, avoiding direct contact between workers and the high-temperature, hazardous environment. Meanwhile, the use of glass partitions and negative pressure ventilation isolates operators from heavy metal fumes and dust, significantly improving occupational safety.
Data Traceability
The intelligent fire assay system achieves standardization and traceability of testing operations. All testing operations are uniformly controllable, and testing data can be recorded, queried, and analyzed, providing data support for process optimization.
Graphite Anodes
Made from high-purity carbon, graphite anodes are valued for their thermal stability and electrical conductivity, making them ideal for high-temperature industrial processes.
Titanium Anodes
Pure titanium anodes offer exceptional mechanical strength and corrosion resistance, particularly in saline and acidic environments.
Mixed Metal Oxide (MMO) Anodes
MMO anodes consist of a titanium substrate coated with a catalytic layer of metal oxides—typically iridium, ruthenium, tantalum, or their oxides—providing superior electrochemical performance.
Applications of Anode for Metal Electrolysis
Industrial Metal Manufacturing
Anodes are essential in the electrometallurgical industry for producing high-purity metals such as aluminum, copper, lead, and zinc. In processes like aluminum smelting (Hall-Héroult process) and copper electrorefining, the anode either participates directly in the reaction (consumable anodes) or serves as an inert surface for oxidation (non-consumable anodes).
Surface Treatment and Finishing
In surface engineering, electrolysis anodes control the transfer of metal ions and surface modification processes that enhance durability, aesthetics, and functionality of components.
Electrochemical Synthesis
Anodes are central to large-scale electrochemical manufacturing, where they initiate oxidation processes to generate essential commodities.
Water and Wastewater Treatment
Electrolysis anodes are increasingly used in environmental engineering for decentralized and chemical-free water treatment solutions.
Power Generation and Energy Storage
In energy technologies, anodes serve as reaction sites for fuel oxidation or water splitting, enabling clean energy generation and storage.
Research and Laboratory Applications
Electrolysis anodes are indispensable tools in academic and industrial R&D settings for exploring reaction mechanisms and developing novel technologies.
System Components of Smart Fire Assay System
Intelligent Batching System: Automatically weighs and mixes raw materials according to a preset formula, ensuring batching accuracy and consistency.
Automatic Mixing and Adding System: Uniformly mixes the batched materials and automatically adds them to the melting furnace, reducing manual intervention.
Automatic Melting System: Melts the mixed materials into a homogeneous melt using high-temperature melting technology, preparing for subsequent steps.
Intelligent Ash Blowing System: Removes impurities from the melt using ash blowing technology, leaving precious metal components, achieving precious metal enrichment and purification.
Automatic Gold Separation System: Separates and purifies the precious metals after ash blowing, obtaining high-purity precious metal products.
Maintenance of Anode for Metal Electrolysis
Visual Inspections
Periodic checks for signs of coating degradation, pitting, or delamination help detect early failure.
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Performance Monitoring
Tracking voltage, current density, and gas production rates can reveal inefficiencies caused by anode passivation or fouling.
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Cleaning Procedures
In some applications, mineral scaling or oxide buildup may require periodic cleaning using mild acids or mechanical methods—always following manufacturer guidelines.
03
Electrolyte Quality Control
Impurities in the electrolyte can accelerate anode wear. Regular filtration and chemical analysis help maintain optimal conditions.
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System Diagnostics
Automated sensors and data logging systems can alert operators to deviations before significant damage occurs.
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We're professional smelting equipment manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to buy customized smelting equipment made in China here from our factory.
Fully Automatic Selenium Refining System, Smart Fire Assay System, smelting equipment
