To cover a broad range of applications the input weight can be between 1 and 15 kg. The maximum particle size, which can be introduced in the HP-BTM2, is 50 mm. The general application of the HP-BTM2 is particle size reduction and sub-sampling in order to obtain a representative sample for final analysis with X-ray fluorescence. To eliminate operational risks, the sample weights are monitored after each preparation step.
The machine consists of five main individual working units:
- Input magazine
- Crusher/Linear Splitter HP-BT15
- Cup handling device HK-RX3
- 2x Mill HP-M1500C
- Output belt magazines
The input is designed to allow an easy transfer of the material into the bucket with 5 l volume. In the magazine up to 15 of those buckets can be stored. The operator can choose different customized programs for sample preparation for each of those buckets.
CRUSHER/LINEAR SPLITTER HP-BT15
The first preparation step is a size reduction done by a jaw crusher. A vibration feeder which is located below the crusher ensures a constant material flow into the subsequent linear splitting unit. The linear splitter allows a representative sub-sampling of adjustable volumes into two cups (1.5 l). Calculating the desired splitting ratio (sample/residue material) is done automatically. Residual material is discharged via a vibration feeder to a waste bucket or a de-dusting system.
CUP HANDLING DEVICE HR-RX3
The cup handling between the single compounds is done by a swivel- mounted 2 axis handling device with a robot gripper.
This unit basically consists of a pulverizing mill with the maximum capacity of approx. 1.5l. These mills allow fine grinding of the crushed material to a particle size suitable for creating a final sub-sample. This pulverized sub-sample can be used, e.g., for the preparation of fused beads for chemical analysis by XRF. For further reducing of the sample volume, a second dosing device transfers the material into small vials (100 ml). The material which has not been dosed into the vial will remain in the cup and can be used as a backup sample.
OUTPUT BELT - MAGAZINES
The cup handling device puts both parts of the sample, the vials and the cups, on 2 different belts with 30 positions each. From here, the samples can be taken away. Underneath these belts, there are 2 input belts, where empty cups and vials will be transported back into the system.
After each preparation step, the system is cleaned by compressed air. An external dust extraction unit is required to remove waste material. This facility can be supplied as an option. The machine is totally enclosed, sound insulated and requires a minimum of operator’s time and maintenance.
The machine is equipped with a separate electrical control cabinet.