Ball Mill | Solidra – 02
The Ball Mill Solidra – 02 studies solids comminution using two steel-jacketed drums with transparent fronts. This Ball Mill demonstrates cascade and cataract motion at varying rotation speeds, with power consumption displayed digitally. It includes three sets of grinding balls at Ø=5/10/15mm for testing different milling conditions. Adjustable axle spacing accommodates both big and small drum sizes.
The Ball Mill Solidra – 02 is a form of mill with grinding bodies, featuring drums that open at the front for loading material and milling balls. This Ball Mill uses drums mounted on a drive roller and a loose roller with adjustable spacing between the axles. It demonstrates cascade and cataract motion states, observable through transparent drum fronts.
Product Overview
Ball mills are a form of mills with grinding bodies. The drums can be opened at the front and loaded with the material to be milled (limestone is recommended) and the milling balls. The drums are mounted on a drive roller and a loose roller with adjustable spacing between the axles. At low rotation speeds the comminution is affected by the balls rolling over the material (cascade motion).
At higher speeds, some balls are lifted up the wall, become detached and drop down onto the material (cataract motion). Above the critical speed, centrifugal forces ensure that no more comminution takes place. These motion states can be observed through the transparent fronts of the drums on this Ball Mill. In order to compare the theoretical power demand with the actual, the power consumption of the drive motor is indicated on a digital display.
Ball Mill Solidra – 02, Technical Specifications
| Specification | Detail |
|---|---|
| Process | Comminution of solids with a ball mill |
| Drums | 2, with steel jackets and transparent fronts |
| Rollers | 1 drive roller with adjustable speed, 1 loose roller |
| Axle Spacing | Adjustable to accommodate different drums |
| Power Measurement | Measurement of power consumption |
Technical Data
Big Drum
| Parameter | Value |
|---|---|
| Capacity | 7L approx. |
Small Drum
| Parameter | Value |
|---|---|
| Capacity | 0.7L approx. |
Grinding Balls
| Parameter | Value |
|---|---|
| Sets | 3 |
| Diameter | Ø=5/10/15mm |
Measuring Ranges
| Parameter | Value |
|---|---|
| Power consumption | 0~200W |
| Speed | 0~500min⁻¹ |
Key Features
- Drums: 2, steel jackets with transparent fronts, capacities 7L (big) and 0.7L (small) approx.
- Rollers: 1 drive roller with adjustable speed, 1 loose roller
- Axle Spacing: adjustable to accommodate different drums
- Grinding Balls: 3 sets, diameters Ø=5/10/15mm
- Power Measurement: digital display of power consumption, range 0~200W
- Speed Range: 0~500min⁻¹
- Motion Observation: cascade and cataract motion visible through transparent drum fronts, core to how this Ball Mill demonstrates comminution
- Comparative Study: compares theoretical and actual power demand
Experiments
- Degree of comminution dependent on milling time, rotation speed, ball diameter, ball filling, material to be milled
- Cascade and cataract motion, critical speed
- Theoretical and actual power demand
Construction and Design
The Ball Mill Solidra – 02 consists of 2 drums with steel jackets and transparent fronts, with capacities of approximately 7L (big drum) and 0.7L (small drum). The drums open at the front for loading material and milling balls, and are mounted on a drive roller with adjustable speed and a loose roller. Axle spacing between the rollers is adjustable to accommodate different drums. Three sets of grinding balls, with diameters of Ø=5, 10, and 15mm, are used for comminution. Power consumption is measured on a digital display, ranged 0 to 200W, with speed measurable from 0 to 500min⁻¹.
Scope of Delivery
- 1 experimental module
- 2 milling drums
- 3 sets of grinding balls
- 1 instructional manual
Q: What is the Ball Mill Solidra – 02 used for?
A: It is used to study the comminution of solids, examining the effects of milling time, rotation speed, ball diameter, ball filling, and material type.
Q: What is the difference between cascade and cataract motion?
A: Cascade motion occurs at low rotation speeds, where balls roll over the material. Cataract motion occurs at higher speeds, where balls are lifted up the wall, become detached, and drop onto the material.
Q: What drum sizes are included?
A: A big drum with approximately 7L capacity and a small drum with approximately 0.7L capacity are included.
Q: What grinding ball sizes are available?
A: Three sets of grinding balls are available, with diameters of Ø=5mm, 10mm, and 15mm.
Q: How is power consumption measured?
A: Power consumption is indicated on a digital display, with a measuring range of 0 to 200W, allowing comparison of theoretical and actual power demand.
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