Description
Soil Grinding and Screening Machine
Product Introduction
This machine is designed for heavy metal analysis in soil, equipped with 4 agate grinding jars. The sealing pressure of the agate grinding jars is adjustable via a graduated scale. The grinding jars rotate reversely around their own axes while revolving around the turntable axis. Samples inside the jars collide and rub against each other at high speed, achieving sample crushing, grinding, mixing and dispersion. It supports dry grinding, wet grinding and vacuum grinding. Two or four grinding jars can work simultaneously at a time.
Technical Parameter Table of Planetary Ball Mill
| No. | Model | Style | Jar Rotation Speed | Jar Holder Inner Diameter (mm) | Motor Power | Jar Revolution Diameter (mm) | Overall Dimensions (mm) | Net Weight (kg) |
| 1 | XQM-0.2 | Mini Type | 0~1160 r/min | 50 | 90W | Φ111 | 420×260×310 | 25 |
| 2 | XQM-0.2S | Mini Glove Box Type | 0~1160 r/min | 50 | 90W | Φ111 | Main Unit: 390×220×270Control Box: 200×180×240 | 29 |
| 3 | XQM-0.4A | Semi-Circular Type | 0~870 r/min | 80 | 250W | Φ140 | 530×300×360 | 34 |
| 4 | XQM-6 | – | 0~670 r/min | 134 | 0.75KW | Φ234 | 760×470×580 | 100 |
| 5 | XQM-4A | Semi-Circular Type | 0~670 r/min | 134 | 0.75KW | Φ234 | 760×470×600 | 85 |
| 6 | XQM-(8-12) | – | 0~580 r/min | 162 | 1.5KW | Φ275 | 900×600×640 | 168 |
| 7 | XQM-(8-12)A | Semi-Circular Type | 0~580 r/min | 162 | 1.5KW | Φ275 | 880×560×642 | 150 |
| 8 | XQM-16A | Semi-Circular Type | 0~510 r/min | 182 | 3KW | Φ320 | 950×600×710 | 205 |
| 9 | XQM-20 | – | 0~430 r/min | 222 | 4KW | Φ385 | 1200×790×930 | 392 |
| 10 | XQM-40 | – | 0~390 r/min | 250 | 5.5KW | Φ430 | 1400×880×1070 | 656 |
| 11 | XQM-60 | – | 0~260 r/min (1:1.5) | 275 | 7.5KW | Φ490 | 1600×1070×1250 | 950 |
| 12 | XQM-100 | – | 0~240 r/min (1:1.5) | 326 | 11KW | Φ578 | 1750×1140×1330 | 1300 |
| 13 | XQM-200 | – | 0~215 r/min | 460 | 22KW | Φ738 | 2670×1600×2804 | 2725 |
Technical Specifications of Soil Grinding and Screening Machine
- Voltage: 220V AC
- Feed Particle Size: ≤10 mm for soil samples, ≤3 mm for other materials; Discharge Particle Size: as fine as 0.1 μm
- Rotation Speed (r/min): Revolution: 35-335 r/min; Rotation: 70-670 r/min
- Three-Phase Motor Variable Frequency Controller Power: 0.75KW (with power display electronic monitoring device; Continuous operation timer (min); Forward-reverse commutation cycle (min))
- Speed Control Mode: Stepless speed regulation, automatic timing for forward and reverse rotation, automatic stop
- Continuous Working Time (Full Load): 48 hours
- Electric Screener: Capable of holding seven layers of sieves with a diameter of 200 mm; Screening range: 20-200 mesh (20 microns), digital display; Screening vibration frequency: 1400 rpm
Standard Configuration of Soil Grinding and Screening Machine
- Main grinding unit
- 4 pcs of 250 ml agate grinding jars, 700 pcs of agate grinding balls
- Electric screener
- A complete set of round frame sieves (20, 40, 60, 80, 100, 120, 140, 160, 180, 200 mesh) and base
Working Principle
This machine is used for heavy metal analysis in soil, equipped with 4 agate grinding jars. The sealing pressure of the agate grinding jars is set by a graduated scale. The jars revolve around the turntable axis and rotate reversely around their own axes at the same time. Samples in the jars collide and rub against each other during high-speed movement, so as to crush, grind, mix and disperse samples. It can be used for dry grinding, wet grinding and vacuum grinding. Two or four grinding jars can operate at the same time.
Supporting Products Supply
We also supply various grinding balls: stainless steel balls, zirconia balls, alumina balls, PU balls, cemented carbide balls, tungsten balls, agate balls, hard alloy balls, silicon nitride balls, high wear-resistant steel balls, manganese steel balls, nylon balls, glass balls and other special metal material balls.
We also provide grinding jars of various materials: agate, alumina corundum ceramic, zirconia ceramic, silicon nitride ceramic, silicon carbide ceramic, stainless steel, wear-resistant steel, manganese steel, nylon, polyurethane, hard alloy, crystal glass, etc.
This mill requires a grounded 220 VAC electrical supply and should be operated on a stable, vibration-dampened surface. The agate grinding jars are brittle and must be handled with care to avoid cracking under excessive sealing pressure.
- Electrical Safety: Ensure the mill is connected to a properly grounded outlet to prevent electrical shock or fire hazard.
- Jar Integrity: Inspect agate jars for cracks or chips before each use and do not exceed the recommended sealing pressure indicated on the graduated scale.
- Vacuum Operation: When using vacuum grinding mode, verify that all jar seals are intact and the vacuum system is properly connected to avoid leaks.
- Thermal Management: Allow the mill to cool for at least 10 minutes after extended grinding runs to prevent overheating of the motor and bearings.
- Mechanical Safety: Keep hands, hair, and loose clothing away from rotating parts during operation and always use the safety interlock if equipped.
This procedure outlines the safe setup and operation of the XQM-4A mill for dry, wet, or vacuum grinding of soil samples. Follow each step in sequence to ensure sample integrity and operator safety.
Required Equipment: XQM-4A Planetary Ball Mill, Agate Grinding Jars (2 or 4)
- Load Jars
Fill each agate jar with soil sample and grinding media to no more than two-thirds of the jar volume. - Set Sealing Pressure
Adjust the sealing pressure of each jar using the graduated scale to match the selected grinding mode (dry, wet, or vacuum). - Configure Mill Settings
Set the revolution speed and grinding time on the control panel according to the desired particle size and material hardness. - Start Grinding
Press the start button and monitor the mill for unusual noise or vibration during the first minute of operation. - Stop and Retrieve Sample
After the cycle completes, allow the mill to come to a full stop before opening the jar clamps and removing the ground sample.
What is the relationship between feed particle size and final grind fineness when processing soil versus hard materials in the XQM-4A planetary mill?
For soil samples, the mill accepts feed particles up to 10 mm, while for other materials the maximum feed size is 3 mm. In both cases, the discharge particle size can be as fine as 0.1 μm, achieved through the planetary action with revolution speeds of 35-335 r/min and jar rotation of 70-670 r/min. This trade-off means that harder materials require pre-crushing to smaller feed sizes to reach the same ultimate fineness.
Which grinding jar materials are compatible with the XQM-4A for contamination-free grinding in trace metal analysis?
The XQM-4A supports a wide range of jar materials beyond the standard 250 ml agate jars, including alumina corundum ceramic, zirconia ceramic, silicon nitride ceramic, stainless steel, wear-resistant steel, nylon, polyurethane, hard alloy, and crystal glass. This compatibility allows researchers to select jar materials that match their contamination control requirements, such as using agate for minimal metal contamination in soil heavy metal analysis.
What electrical and operational infrastructure is needed to run the XQM-4A planetary mill for extended unattended grinding?
The XQM-4A requires a standard 220V AC power supply and uses a 0.75 kW three-phase motor with variable frequency controller that includes power display, continuous operation timer, and forward-reverse commutation cycle. It can run continuously for up to 48 hours under full load, making it suitable for overnight or weekend operation, but needs adequate bench space as overall dimensions are 760×470×600 mm and net weight is 85 kg.
The XQM-4A planetary mill integrates four 250 mL agate jars and an electric screener for soil sample preparation targeting heavy metal analysis, achieving discharge particle sizes as fine as 0.1 μm while supporting dry, wet, and vacuum grinding modes.
Positive
- Four 250 mL Agate Grinding Jars Included: Provides four agate jars with 250 ml capacity each, enabling simultaneous preparation of multiple samples for heavy metal analysis.
- Achieves Sub-Micron Particle Sizes: Capable of grinding soil samples down to 0.1 μm, suitable for fine analytical requirements.
Trade-offs
- Feed Size Constraint for Non-Soil Materials: For materials other than soil, feed particle size must be ≤3 mm, requiring pre-crushing for larger samples.
- Requires 220V AC with Three-Phase Controller: The 0.75 kW motor operates on 220V AC with a three-phase variable frequency controller, necessitating compatible electrical infrastructure.
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To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
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