Vacuum Shot Maker for Gold Silver Copper 1kg 2kg 4kg 8kg

Short Description:

The design of this vacuum granulator system is based on the actual needs of the precious metal process by using modern high-tech induction heating technology.

The vacuum granulator is used to manufacture high quality and homogenous master grains for precious metals such as gold, silver, copper, and alloys, starting from raw material molten by Hasung induction heating in an inert gas protective atmosphere, then dropped into a water tank passing through a multi-hollowed crucible that acts as flow breaker.

The vacuum granulator adopts fully vacuum and inert gas melting and granulating, the machine can automatically stir in melting, electromagnetic stirring, and refrigeration in a closed + vacuum/inert gas protection melting chamber, so that the product has the characteristics of no oxidation, super low loss, no pores, no segregation in color, and beautiful appearance with uniform size.

This equipment uses Mitsubishi PLC program control system, SMC pneumatic and Panasonic servo motor drive and other well-known brand components at home and abroad.


Product Detail


Machine Video

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The vacuum granulator uses inert gas to protect the smelting metal. After the smelting is completed, the molten metal is poured into the water tank under the pressure of the upper and lower chambers. In this way, the metal particles we obtain are more uniform and have better roundness.

Secondly, because the vacuum pressurized granulator is protected by inert gas, the metal is casted in the condition of completely isolating the air, so the surface of the casted particles is smooth, free of oxidation, no shrinkage, and extremely high gloss.

Precious metal vacuum granulator, including a crucible for holding metal and a heating device for heating the crucible; a sealing chamber is provided outside the crucible; the sealing chamber is provided with a vacuum tube and an inert gas tube; the sealing chamber is provided with a chamber door for easy metal insertion and a cover plate; the bottom of the crucible is provided with a bottom hole for the outflow of the metal solution; the bottom hole is provided with a graphite stopper; the upper part of the graphite stopper is connected with an electric push rod for driving the graphite stopper to move up and down; a turntable is arranged below the bottom hole; A driving device is connected; a cooling water tank is arranged under the turntable for cooling the metal droplets falling from the turntable; the turntable and the cooling water tank are located in the sealed chamber; the side wall of the cooling water tank is provided with a cooling water inlet and a cooling water outlet; The cooling water inlet is located in the upper part of the cooling water tank, and the cooling water outlet is located in the lower part of the cooling water tank. The formed metal particles are relatively uniform in size. The surface of the metal particles is not easy to be oxidized, and the inside of the metal particles is not easy to generate pores.


1. Stopper free crucible
2. Direct mixing with protection gas
3. Visible water tank-water recycling for cooling
4. Crucible accepts metal in any shape  – tree – grains – bar
5. Constant size of grains
6. Computerized control system
7. Good segregation of gold and alloys
8. Easy for maintenance
9. Help remove the impurity from used metal

Technical Parameters

Model No. HS-GR1 HS-GR2 HS-GR4 HS-GR5 HS-GR8 HS-GR10
Voltage 220V single phase  50/60Hz 380V 50/60Hz; 3 phases
Power 5KW 8KW 15KW
Capacity (Au) 1kg 2kg 4kg 5kg 8kg 10kg
Application metals Au, Ag, Cu, etc
Casting time                              5-10 min. 10-15 min.
Maximum temperature 1500 ℃ (degrees celsius)
Temperature accuracy ±1℃
Control type Mitsubishi PID control system / Mitsubishi PLC Touch panel
Casting beads size 1.50 mm - 4.00 mm
Vacuum Pump High level quality vacuum pump / Germany vacuum pump 98kpa (Optional)
Shielding gas Nitrogen/Argon
Machine Size 680x690x1470mm
Weight Approx. 180kg

Product Display


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  • Vacuum granulator consumables are

    1. graphite crucible

    2. ceramic shield

    3. graphite stopper

    4. graphite blocker

    5. heating coil