Dewatering Tailings Gold Sludge Mining Thickener Decanter Centrifuge with Save Water and Cost
Modern dewatering solutions can effectively treat mining residues and recover valuable process water bound by tailings. This reduces the environmental burden of storing tailings in large settling basins or sludge ponds and offers cost-effective and eco-friendly benefits.
Tailings, in mining, are fine-grained residues in the form of sludges that are created during the processing of ores and minerals. These residues, which are partly contaminated with chemicals, are often stored in sludge ponds and pose a significant risk to the environment. Any breaks in the dam can result in a major impact on both humans and the environment.
Tailings storage methods are evolving, with dewatered tailings becoming more common in place of sludge pond storage. Many mining companies now opt to store dewatered sludge on the ground in accordance with legal guidelines. Dewatering the tailings is especially beneficial in areas that are difficult to access or prone to earthquakes, as it reduces environmental hazards and saves space. In addition, recycling the processed water can lead to significant cost savings in mine operations.
2 phase Decanter Centrifuge:
As the mixed liquid enters the high-speed turning drum, the solid-phase particles are subjected to the greatest centrifugal force, causing them to run and settle on the drum wall. Meanwhile, the lighter liquid settles at the innermost part of the drum under the minimum centrifugal force. Simultaneously, a screw feeder rotates at a high speed in the same direction as the drum, creating a constant speed difference through the differential mechanism. This allows the liquid to be discharged through the liquid outlet.
| Model | Diameter(mm) | Length(mm) | Max speed | L/D ratio | G-force | Capacity(m3/h) | Main motor power(Kw) | Weight(kg) | Dimension(mm) |
|---|---|---|---|---|---|---|---|---|---|
| LW250*1000 | 250 | 1000 | 5000 | 4 | 2722 | 0.5-5 | 7.5 | 1600 | 2120*1250*680 |
| LW300*900 | 300 | 900 | 4200 | 3 | 2964 | 1-6 | 11 | 1900 | 2150*1300*900 |
| LW300*1200 | 300 | 1200 | 4000 | 4 | 2784 | 2-6 | 11 | 2700 | 2450*1300*900 |
| LW355*1160 | 355 | 1160 | 3600 | 3.3 | 2576 | 2-8 | 15 | 2750 | 2470*1350*830 |
| LW355*1460 | 355 | 1460 | 3600 | 4 | 2576 | 2-10 | 15 | 2850 | 2750*1350*830 |
| LW400*1200 | 400 | 1200 | 3200 | 3 | 2294 | 2-12 | 18.5 | 3100 | 2730*1600*1080 |
| LW400*1600 | 400 | 1600 | 3000 | 4 | 2016 | 3-15 | 22 | 3260 | 3130*1600*1080 |
| LW450*1800 | 450 | 1800 | 2800 | 4 | 1976 | 4-25 | 37 | 3250 | 3320*1700*1130 |
| LW500*2000 | 500 | 2000 | 2800 | 4 | 1750 | 5-35 | 45 | 4000 | 3520*1800*1170 |
| LW530*1855 | 530 | 1855 | 2600 | 3.5 | 2006 | 5-38 | 55 | 4680 | 3885*1350*1600 |
| LW530*2120 | 530 | 2120 | 2400 | 4 | 1709 | 5-40 | 55 | 4800 | 4150*1350*1600 |
| LW550*2000 | 550 | 2200 | 2800 | 4 | 2414 | 6-40 | 55 | 5700 | 4570*1380*1600 |
| LW650*1950 | 650 | 1950 | 2200 | 3 | 1761 | 6-45 | 75 | 5000 | 4840*1510*1720 |
| LW650*2600 | 650 | 2600 | 2000 | 4 | 1456 | 6-65 | 90 | 6000 | 5490-1510*1720 |
| LW720*2160 | 720 | 2160 | 2000 | 3 | 1612 | 7-80 | 120 | 6000 | 5200*1600*1800 |
| LW720*2880 | 720 | 2880 | 2000 | 4 | 1306 | 7-90 | 120 | 8000 | 3100*1600*1800 |
| LW800*2400 | 800 | 2400 | 1800 | 3 | 1451 | 20-100 | 150 | 12000 | 5820*2000*1300 |
| LW800*3200 | 800 | 3200 | 1800 | 4 | 1451 | 20-120 | 150 | 13000 | 7100*2000*1300 |
Decanter Centrifuge Application:
Decanter centrifuge is commonly utilized in various industries such as municipal and industrial waste water treatment, food processing, pharmaceuticals and chemicals, among others.
- Decanter centrifuge particle size classification: The product effectively removes large solid particles.
- Decanter centrifuge solid phase dehydration: dehydration effect for processing materials of solid particles.
- Decanter centrifuge liquid clarification: used for removing solid particles in the suspension liquid are clarified
Types Of Decanters
There are multiple decanter centrifuges used in the industry, including vertical, horizontal, and conveyor types. The technology works by separating substances through gravity, such as in the case of a mud and water mixture where the heavier mud will settle at the bottom allowing for a clear separation between the two substances.
Decanter Principles
In the decanter centrifuge, gravitational force is utilized in a similar manner to that of the glass mixture. However, continuous rotation speeds up the process significantly, providing up to 4000 times the normal gravitational force and reducing the separation time from hours to seconds.
Rotational Separation
The process of rotational separation is comparable to what can be experienced on amusement park rides and at county fairgrounds. By positioning oneself at an angle, it becomes possible to counteract the gravitational forces caused by rotation. In a similar fashion, a decanter centrifuge is composed of a rotating bowl tube that operates at an exceptionally high rate of speed. The bowl tube is outfitted with an internal conveyor that moves in the same direction at a varying velocity.
Decanter centrifuge for industrial separation
Typical areas of use are:
- Thickening of sludges
- Clarification of liquids and suspensions
- Washing
- Dehydration of sludges and suspensions
- Extraction
- Classification (wet classification of solid materials in a suspension according to grain size)
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