2. Working Principle

1. Precious metal raw materials are loaded into the sealed melting chamber. The integrated vacuum pump evacuates air from the cavity, and high-purity inert gas is filled to fully isolate oxygen and prevent high-temperature oxidation and discoloration.
2. The 15KW high-frequency induction heating system rapidly raises the material temperature up to a maximum of 1500℃, with temperature accuracy controlled at ±1℃ to ensure complete and uniform melting of the metal.
3. Molten precious metal flows downward through a precision diversion nozzle, forming consistent liquid droplets. These droplets are rapidly cooled and solidified into regular spherical or oval metal granules inside the closed inert gas environment.
4. Once the granulation cycle finishes, finished granules can be discharged directly through the bottom valve. The final products are suitable for alloy proportioning, precious metal recycling, electroplating anodes and laboratory research applications. 3. Core Features & Advantages

1. High-Efficiency Fast Melting
   Equipped with 15KW high-power induction heating, the machine completes a full melting and granulation cycle within 3–5 minutes, supporting continuous batch production and improving overall workshop efficiency.
2. High-Precision Temperature Control
   Maximum working temperature reaches 1500℃ with ±1℃ control accuracy, ensuring stable melting of various precious metals and alloys, and avoiding composition segregation and uneven granule quality.
3. Premium Quality Uniform Granules
   Standard finished granule size ranges from 1.8mm to 4mm, with smooth bright surface, no oxidation, no porosity and no impurities, requiring no secondary pickling or polishing treatment.
4. Built-In Vacuum Pump Configuration
   The machine comes with a matched professional vacuum pump as standard, creating a high-vacuum sealed environment to effectively reduce precious metal volatilization loss and maximize raw material yield.
5. Proven German Technology & Imported Parts
   Adopting mature German granulation technology and internationally imported core components, the equipment features stable performance, low failure rate and long service life for long-term continuous operation.
6. Automatic Control & User-Friendly Operation
   The integrated control panel enables fully automatic operation with temperature, vacuum and timing monitoring. Workers can master full operation after simple training, greatly reducing labor costs and operational errors.
7. Flexible Capacity Options & Customization Support
   As part of our full product series, multiple chamber capacities from 3kg to 100kg are available. We also support parameter customization, OEM branding and custom logo printing on the machine to meet your individual business needs.

4. Technical Parameters

5. Application Fields

• Jewelry Manufacturing: Used for karat alloy proportioning, jewelry scrap recycling and raw material preparation for investment casting, to stabilize gold karat accuracy and reduce smelting material loss.
• Precious Metal Refining & Recycling: Granular raw materials increase reaction contact area, improving the efficiency of electrolytic and wet refining processes, and supporting standardized delivery of refined pure metals.
• Electroplating Industry: Produces high-purity spherical anode granules with uniform dissolution rate, which helps stabilize plating current and achieve smooth, consistent high-quality coatings.
• Electronic & Precision Solder: Applied to prepare low-oxygen gold, silver and copper-based precision solders and electrical contact materials for electronic components.
• Laboratory & New Material R&D: Suitable for small-to-medium batch sample preparation of special alloys and catalytic materials, ensuring accurate formula ratio and repeatable experimental data.

6. FAQ (Frequently Asked Questions)