1. Product Overview
The SSM-GVR3 vacuum granulating machine is a high-precision precious metal granulation equipment under the Vacuum Granulating Systems product category, adopting mature German technology and equipped with imported core components. Designed for jewelry factories, precious metal refineries, electroplating factories and new material laboratories, this 3kg gold capacity model can rapidly melt gold, silver, copper and various alloy materials under vacuum inert gas protection, producing smooth, oxide-free metal granules with a particle size range of 1.8–4mm within only 5 minutes per production cycle.
Our vacuum granulator series provides multiple optional chamber capacities including 3kg, 4kg, 5kg, 6kg, 8kg, 10kg, 20kg, 50kg and 100kg to satisfy different single-batch feeding and production capacity demands, covering small-batch experimental trial production to large-scale industrial mass production. With precise temperature control up to ±1℃, the equipment effectively avoids metal oxidation, ensures uniform granule shape and stable alloy composition, greatly reducing raw material loss in subsequent jewelry smelting, alloy batching and electroplating processing.
2. Working Principle
- Raw precious metal materials are put into the sealed melting chamber, then the vacuum pump starts to evacuate air inside the cavity, and high-purity inert gas is filled to completely isolate oxygen and prevent high-temperature oxidation.
- The high-frequency induction heating system rapidly heats the material up to the set melting temperature (max 1500℃) with temperature accuracy controlled at ±1℃ to fully melt the metal into uniform liquid.
- The molten precious metal flows down through the precision diversion nozzle, forming continuous liquid droplets. These droplets are rapidly cooled and condensed into spherical or oval metal granules in the sealed inert environment.
- After the granulation process is completed, users can open the discharge valve to collect finished metal granules directly, which can be used for alloy proportioning, precious metal recycling, electroplating anode and laboratory research.

3. Core Features & Advantages
- High Precision Constant Temperature Control
The maximum heating temperature reaches 1500℃ with temperature control accuracy of ±1℃, which ensures stable melting of various precious metals and alloys, effectively avoiding component segregation and uneven granulation.
- Fast High-Efficiency Granulation
Only 5 minutes are needed to complete one full granulation cycle, greatly improving workshop production efficiency and suitable for continuous batch material preparation.
- Uniform High-Quality Granules
Finished granule size ranges from 1.8mm to 4mm, with smooth surface, no oxidation, no pores and no black spots, no need for secondary polishing or pickling treatment.
- Vacuum & Inert Gas Protection Configuration
Equipped with a matched professional vacuum pump, the fully sealed melting cavity can completely isolate oxygen, minimize precious metal volatilization loss and maximize raw material utilization rate.
- Stable Imported Core Components & German Technology
Adopting mature German manufacturing technology and internationally imported key parts, the equipment runs stably for long-term continuous operation with low failure rate and long service life.
- Intelligent Automatic Control & Easy Operation
Humanized control panel integrates temperature, vacuum and timing monitoring functions. Operators can finish the whole granulation process with simple parameter setting, no complicated professional operation training required.
- Diversified Capacity Selection & Customizable Service
Multiple standard chamber capacities (3kg, 4kg, 5kg, 6kg, 8kg, 10kg, 20kg, 50kg, 100kg) are optional. We also support parameter customization, OEM private branding and customized logo printing on the machine body to meet personalized business demands.
4. Technical Parameters
| Item |
SSM-GVR3 Vacuum Granulating Machine |
| Model No. |
SSM-GVR3 |
| Rated Voltage |
380V, 50/60Hz, 3 Phases |
| Rated Power |
10KW |
| Standard Chamber Capacity |
3kg (Gold)
Multiple optional capacities: 3kg,4kg,5kg,6kg,8kg,10kg,20kg,50kg,100kg; customized capacity is available |
| Max Working Temperature |
1500℃ |
| Temperature Control Accuracy |
±1℃ |
| Applicable Materials |
Gold, Silver, Copper and various precious metal alloys |
| Finished Granule Size |
1.8mm - 4mm |
| Single Batch Granulation Time |
5 Minutes |
| Overall Dimension |
6808801490mm |
| Net Weight |
Approx. 150kg |
| Standard Configuration |
Built-in supporting vacuum pump, imported core components, German mature technology |
Note: The above parameters are for reference only. Partial specifications can be customized according to your production requirements. Please contact our professional customer service for detailed technical solutions and customized quotations.
5. Application Fields
- Jewelry Manufacturing: Applied to alloy proportioning, jewelry scrap recycling and raw material preparation for investment casting, to stabilize karat accuracy and reduce smelting loss.
- Precious Metal Refining & Recycling: Granular materials increase reaction contact area, improving the efficiency of electrolytic and wet refining, and supporting standardized delivery of refined pure metals.
- Electroplating Industry: Produces high-purity spherical anode granules with uniform dissolution rate, helping stabilize plating current and deliver smooth, uniform high-quality coatings.
- Electronic & Precision Solder: Used for preparing low-oxygen gold, silver and copper-based precision solders and electrical contact materials for electronic components.
- Laboratory & New Material R&D: Suitable for small-batch sample preparation of special alloys and catalytic materials, ensuring accurate and repeatable experimental data.
6. FAQ (Frequently Asked Questions)
Q1: What kinds of metals can this vacuum granulating machine process?
A1: It is applicable to gold, silver, copper and various precious metal alloys, widely used in jewelry alloy batching, precious metal recycling, electroplating industry and laboratory new material research.
Q2: What is the size range of the produced metal granules? Can the granule size be adjusted?
A2: The standard granule size is 1.8mm to 4mm. We can customize diversion nozzles of different specifications to produce granules with different particle sizes according to customer requirements.
Q3: Does this equipment come with a vacuum pump?
A3: Yes, the vacuum pump is included in the standard configuration of SSM-GVR3 model, which can form a high vacuum sealed environment to prevent metal oxidation during melting and granulation.
Q4: Is the operation of this granulating machine complicated? Do workers need professional training?
A4: The machine adopts automatic intelligent control design with a user-friendly operation panel. Workers can master the complete operation process after simple training, and the equipment supports one-click parameter preset to reduce manual operation errors.
Q5: Can I choose different feeding capacities or do OEM branded customization?
A5: Sure. We provide 9 kinds of standard chamber capacities from 3kg to 100kg for your selection. Meanwhile, we support equipment parameter adjustment, OEM service and customized logo printing on the machine body to meet your personalized production and brand demands.