20KW Vacuum Granulating Machine 10kg Large Batch Gold Silver Refinery Grade Granulator Machine

Product Introduction

1. Product Overview

2. Working Principle

1. Load precious metal raw materials into the hermetically sealed melting chamber. The system evacuates ambient air and fills high-purity inert gas to completely isolate oxygen and eliminate high-temperature oxidation and discoloration.
2. The 20KW high-frequency induction heating system raises the material temperature evenly to a maximum of 1500℃, with ±1℃ temperature accuracy to ensure full, consistent melting and homogeneous alloy composition.
3. Fully molten metal flows through precision drip nozzles at the bottom of the crucible, forms evenly sized droplets under gravity, and drops into the closed circulating cooling water tank.
4. Droplets solidify rapidly into high-sphericity metal granules. The fully enclosed production process generates no dust, and cooling water operates in a closed loop to achieve near-zero wastewater discharge.
5. Finished granules are discharged directly via the bottom valve, ready for direct use in downstream production processes.

3. Core Features

• High-Volume Efficient Production: 20KW high-power induction heating paired with 10kg gold capacity, finishes one full batch in 3–5 minutes, ideal for continuous medium-to-large scale batch production.
• Ultra-Precise Temperature Regulation: Maximum working temperature of 1500℃ with ±1℃ control accuracy, ensures stable melting performance for gold, silver, copper and various precious metal alloys.
• Premium Uniform Granule Quality: Standard granule size of 1.8–4mm with over 95% sphericity, smooth bright surface, zero oxidation and low porosity, requiring no secondary pickling or polishing.
• Vacuum Protection with Minimal Loss: Integrated professional vacuum pump as standard configuration, effectively reduces precious metal volatilization and oxidation loss to maximize raw material yield.
• Automated User-Friendly Operation: Intuitive control panel with real-time monitoring. Simple operation allows workers to master full production procedures after basic training.
• Flexible Customization Options: Full range of standard chamber capacities available; supports custom nozzle sizes, OEM private branding and custom logo printing on the machine body.

4. Technical Parameters

5. Application Fields

• Jewelry Manufacturing: For large-batch alloy proportioning, jewelry scrap recycling and investment casting raw material preparation, stabilizing karat accuracy and reducing smelting loss.
• Precious Metal Refining & Recycling: Improves electrolytic and wet refining efficiency, and supports standardized packaging and delivery of refined pure metals.
• Electroplating Industry: Produces high-purity spherical anode granules with uniform dissolution rate, to stabilize plating current and deliver consistent high-quality coatings.
• Electronic & Precision Solder: Manufactures low-oxygen gold, silver and copper-based precision solder granules for electronic components and electrical contact materials.
• Industrial R&D: Suitable for medium-batch production of precious metal catalytic materials and new alloy formula development.

6. FAQ