Screening and mixing machine
Our 3-fraction starscreen can also be used as a screening and mixing machine with the appropriate equipment. The wheel, crawler or wheel-crawler tracked machine can then be used to stabilise soil with lime, cement or other aggregates. The drive is diesel-hydraulic.
The coarse screen separates larger particles and loosens up the fine fraction. The fine fraction falls onto a conveyor belt and is then weighed and mixed with the compound from the attached binder container during transfer. At the transfer point, the mixture is additionally mixed by a hammer roller and remaining agglomerates of the soil are beaten smaller. The screened soil mixed with compound is transferred at a height of 2.8 metres by the side discharge conveyor.
The binder container is equipped with a dust extraction system, filter, level indicator and overpressure control. The filters are cleaned one after another by compressed air. The machine is controlled by CANBUS and the program. With the appropriate compound, a relatively dust-free and exact mixing with up to 200 tons per hour is possible.
Versatile potential applications
For soils that need to be moistened during the process, we offer appropriate additional equipment. The machine can also be equipped with a larger compressor.
With further equipment, the machine can also be used for the production of liquid soil. This process takes place in batches and preferably in truck mixers. 5-6 truck mixers can be filled in one hour. About 2500-3000 litres of water are needed for 10 tons of soil mixture. This amount of water is supplied through a 2″ pipe when it is transferred to the truck mixer. The feed is regulated by the CANBUS controller of the machine and the individual batches are recorded on a delivery note according to the regulations.
The method described here has particular advantages for clay soils. The starscreen can screen cohesive soils with relatively fine grain size. Due to the direct processing and mixing by the hammer roller, as well as the crushing of the remaining agglomerates, an optimum mixing is also possible with clay soils. For this reason, the soil can be fluidised on site quickly and at any time, which is a crucial point in regard to the German Soil Protection Act.
The screening and mixing process
Applications
Summary
- High mixing performance of more than 200 t/h.
- Thanks to the material loosening by coarse screen and hammer roller, optimum mixing (without agglomerates) is possible even in clay soils.
- With the appropriate equipment, the machine can also be used to produce liquid soil.
- Flexibility: Deployable as screening and mixing machine or 3-fractions starscreen.
- Simple handling: Replacement of mixing unit and second screen deck in no time.
Screening and mixing machine
(medium grain backward, fine grain to the right)
Starscreen and Mixing Machine 3-mtac
Flexibility pure. Both in mobility – be it crawlers, wheels or even both – and in functionality. Here, rapid change is possible from screening AND mixing for screening in 3 fractions – absolutely uncomplicated by means of replacing the mixing container with a second finer screen deck.
| Screenfractions: |
2 + mixing
|
|
Possible fractions:
|
3 |
|
Throughput:
|
Max. 200 cbm/ h (bei 2.2'' screening) |
| Weight: | 30.000 kg (depends on equipment) |
| Version: | trackmobil |
| Engine: | VOLVO TAD 582 VE* |
| Output: |
160 kW
|
| Transport dimensions: | 580 * 100 * 157 (Length*Width*Height in inch) |
| Working dimensions: | 654 * 227 * 157 (Length*Width*Height in inch) |
| Hopper dimensions: | 154 * 47 (Length*Width in inch), bottom 165 * 71 (Length*Width in inch), top |
| Hopper volume: | 5 cbm |
- Auxiliary sieve screen
- Hopper enhancement
- Dosing screw
- Fine deck shifting
- Fire extinguisher
- Bar grate
- Vertical adjustment
- Hydraulic housing
- Compressor
- Magnetic separation
- Cleaning system
- Special color
- Reversible fan
- Wind sifting
- Central lubrication
Switchboard
Backers Crusher &
Auf dem Bült 40
49767 Twist
Germany
Telephone:
Fax: 0049 (0) 5936 9367-21
Business hours
(medium grain to the left, fine grain to the right)
Starscreen and mixing machine 3-mtbc
| Screenfractions: |
2 + mixing
|
|
Possible fractions:
|
3 |
|
Throughput:
|
Max. 200 to/ h (bei 2.2'' screening) |
| Weight: | 30.000 kg (depends on equipment) |
| Version: | semi-trailer or king pin with tracks |
| Engine: | VOLVO TAD 582 VE* |
| Output: |
160 kW
|
Conditioning asbestos-containing material, Conditioning of contaminated material, Drilling mud (rendering it transportable), Producing liquid soil, Soil stabilization
Almost 4 sqm on screening deck I (pre-screening) the task material is prepared to further mechanical treatments in screening deck II. Alternative in step II there can be a fine screening to 8 sqm.
| Transport dimensions: | 538 * 100 * 157 (Length*Width*Height in inch) |
| Working dimensions: | 538 * 266 * 156 (Length*Width*Height in inch) |
| Hopper dimensions: | 154 * 47 (Length*Width in inch), bottom 165 * 71 (Length*Width in inch), top |
| Hopper volume: | 5 cbm |
