Product Description
Tailings are still frequently stored in large settling basins or sludge ponds, they are a great burden on the environment. The process water bound by the tailings remains unused. With modern dewatering solutions, mining residues can be treated economically and the process water that they contain can be recovered. This saves both space and cost and is environmentally friendly.
In mining, the term tailings refers to fine-grained residues in the form of sludges. They are created during the processing of ores and minerals. The resulting waste water or overburden sludge is partly contaminated with chemicals. Tailings are a risk to the environment when stored in sludge ponds. If the dam breaks, this can have a significant impact on humans and the environment.
The storage of tailings in sludge ponds is increasingly being replaced by the storage of dewatered tailings. Mining companies store the dewatered sludge on the ground. This complies with statutory regulations in most countries. In hard-to-reach and confined storage regions or in earthquake-prone areas, it is particularly advantageous if the tailings have been dewatered. This minimizes environmental risks and space requirements. The cleaned process water can be recycled. Mine operation costs are significantly reduced.
Application scope
1. Washing and dehydration of starch
2. Dehydration of soybean wheat proteins
3. Dehydration of fish meal and fish
4. Dehydration of brewers' grains
5. Purification of juice and dehydration of fruit fiber
6. Separation and purification of animal and vegetable oil
The decanter centrifuge is suitable for solid-phase dewatering, liquid-phase clarification and separation, liquid-liquid-solid three phase separation and size-grading of various suspensions with solid-phase particle sizes of 0.005-15mm, consistency of 1-40% and temperature of ≤ 100°C, esp. for separating the suspensions whose consistency and particle size vary greatly and for which recovery of filter cloth is difficult, such as treatment of PVC resins, ammonium sulfite, barrium carbonate, strontium sulphate, lithopone,starch, diatomite, plaster, bauxite, soybean protein, peanut protein, fruit juice, drinks, vegetable oil, citric acid, powder of blood, powder of titanium white, kaolin clay and drilling mud, etc., and dewatering of washed coal and fine coal, purification of waste oil, treatment of grain stillage liquid waste and municipal sewage and mineral classification. Besides, it is suitable for waste water treatment of electric power plant sludge, printing and dyeing sludge, paper manufacture sludge.
Working Principle:
Two Phases Separation Principle:
The feed suspension is introduced through an inlet pipe into the feed zone of the conveyor where it is accelerated and directed into the interior of the bowl. The settled solids are conveyed axially towards the small end of the bowl by means of the screw conveyor, which rotates at a slightly different speed than the bowl. On the way to the discharge ports the solids are lifted out of the pond up along the dry beach. The solids are finally discharged from the bowl through the discharge ports into the collecting chamber of the casing that surrounds the bowl. From there the solids are removed by gravity through the outlet funnel. The liquid phase forming a hollow cylinder due to the centrifugal force, and flows towards the large end of the bowl. There the liquid overflows adjustable plate dams into the centrate chamber of the casing and is discharged by gravity.
Three Phases Separation Principle:
The light liquid phase is discharged into the casing through radial holes in the large end hub. The heavy liquid phase is discharged through axial holes in the large end hub. The liquid radius for the light liquid phase is smaller than the radius for the heavy liquid phase. The liquid level is controlled by plate dams. In order to prevent the light liquid phase from leaving the bowl through the heavy liquid phase outlet, a separating plate is placed on the inside of the large end hub. The heavy liquid phase has to pass under the separating plate before being discharged into the casing. The liquid radius for the heavy liquid phase is controlled by plate dams. The solids are discharged in the normal way.
Technical Parameters:
Bowl ID
(mm) |
Bowl Speed
(rpm) |
L / D |
G - Force |
Capacity
(m3/h) |
Solids Removal
(m3/h) |
Primary Motor
(Kw) |
Weight
(Kg) |
Dimension
(mm) |
|
| 250 |
4500~4600 |
3.0~5.0 |
2000~3500 |
3~5 |
0.4 |
11 |
760 |
1600×1100×850 |
| 300 |
4000~4600 |
3.0~5.0 |
2000~3500 |
3~15 |
0.8 |
11~15 |
1500 |
2470×1230×850 |
| 360 |
3200~4200 |
3.0~5.0 |
2000~3500 |
5~20 |
1.2 |
5~22 |
2000 |
2790×1300×880 |
| 400 |
3200~3900 |
3.0~4.8 |
2000~3500 |
5~30 |
2 |
18.5~30 |
2600 |
2950×1400×850 |
| 450 |
3000~3700 |
3.0~5.0 |
2000~3500 |
5~45 |
2.5 |
22~37 |
3200 |
3300×1500×920 |
| 500 |
2700~3450 |
3.0~5.0 |
2000~3500 |
10~80 |
5 |
30~55 |
5200 |
3730×1600×1100 |
| 550 |
2600~3300 |
3.0~5.0 |
2000~3500 |
10~90 |
6 |
45~75 |
6900 |
4000×1400×1600 |
| 600 |
2500~3200 |
3.0~5.0 |
2000~3500 |
20~95 |
7 |
37~90 |
7900 |
4200×1800×1350 |
| 650 |
2400~3100 |
3.0~5.0 |
2000~3500 |
20~105 |
8 |
37~90 |
8200 |
4300×1900×1350 |
| 750 |
2200~2900 |
3.0~5.0 |
2000~3500 |
30~120 |
12 |
55~135 |
12000 |
5000×2500×1500 |
| 900 |
1800~2600 |
3.0~5.0 |
2000~3500 |
40~180 |
16 |
75~160 |
18000 |
6500×2700×1500 |
FAQ
Q1: Are you a manufacturer or a trader?
A: As a professional manufacturer, we have our own factory, and if a customer has reasonable demand, out machine can be customized.
Q2: How do you ensure the machine quality?
A: As a professional manufacturer of pharmaceutical devices for more than 15years, with strict management, advanced
processing technologies and professional workers, we are confident for our machines quality. And before any machine is delivered,will be carefully tested.
Q3: How can I trust you for the first cooperation?
A: Since our company was founded, we have registered in China Industry and Commerce Bureau. We passed the SGS &
ISO certification, For the first deal between us,Made in China service can be used, which will fairly protect your rights and money throughout the transaction process.
Q4: How do I place an order, and how is it completed?
A: Under the condition that the buyer is satisfied with the quotation and pre-sales service:
1. Both of parties sign on a contract, and then the seller prepare the PI.
2. The buyer arranges the down payment.
3. The seller prepares the machines.
4. After the machine is completed, have the test & trial run.
5. Before the delivery, if the buyer requires, have the necessary inspecting.
6. As per the contract/ PI amount, the buyer balances the payment.
7. The machine is going to be shipped.
8. After the machine is received, the seller provide the buyer guidance for the installation and the debugging.
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