Centrifuge Thickening and Dewatering Machine in Pilot Scale

Centrifuge Thickening and Dewatering Machine, also called Decanter Centrifuge, is a device for separating suspension by centrifugal sedimentation principle. It is a new equipment for dewaterring tailings and concentration in mining and mineral processing plants. It is featured with compact structure and small footprint, high capacity compared with tranditional filter press.

All kinds of suspensions with equivalent diameter of solid particles =3um, weight concentration ratio: 10% or volume concentration ratio = 70%, liquid-solid specific gravity difference: 0.05g/cm3 are suitable for liquid-solid separation or particle classification by this type of centrifuge. It can be widely used in mineral processing, chemical, light industry, pharmaceutical, food, environmental protection and other industries.

Structural features:

1, drum and other main parts are made of corrosion-resistant stainless steel;

2, the feed screw adopts special anti-wear measures, can spray welding cemented carbide protective layer or insert cemented carbide resistance sheet;

3, large length-diameter ratio, high speed. The structure of the drum cone with various angles;

4, can choose heavy load, large transmission ratio cycloidal pin wheel, planetary gear or hydraulic differential;

5, the difference speed and torque can be automatically adjusted with the material concentration, flow changes of the microcomputer control system;

6. The horizontal spiral sedimentation centrifuge with BD plate can concentrate, dewatering and separate materials that are difficult to separate from various initial sedimentation and activated sludge in different proportions.

Working Technical Specification

2.1 Separation performance parameter

• feeding mud water content ： 99.5～95%
• Capacity 1-3m³/h
• mud cake water content : （depend on the raw matetial）
• solid recovery rate: ≥95%
• running way: 24 hours continuous operation

2.2 Design Specification

• Total length: 1720mm
• Total width: 1250mm
• Total height: 680mm
• durm inner diameter: 250
• drum length: 600
• length and diameter ratio: 1:2.4
• design speed : 4500r/min frequency control

Maximum design separation factor:2722

• Differential speed 1-30

3. Motor：

• Start type：frequency converting control
• running type：frequency converting control
• Main motor power: 7.5Kw
• main motor protection rate: IP54

Main motor insulation grade: F

Speed ：2950r/min

Operating noise:   ≤85Db(A)

Vibration intensity :   ≤6.5mm/s

The differential adopts the planetary gear structure with large bearing capacity and stable and reliable operation

Differential load 4000 N•m

Centrifuge main bearing design life: 100000 hours

Centrifuge design life of 20 years

Lubrication mode Main shaft bearing: grease lubrication

Spiral bearings: grease lubrication

Differential: thin oil lubrication

Safety protection: torque protection, differential control, safety cover, etc.

4  material

AISI316L stainless steel：

• Screw pusher material is: AISI316L stainless steel

Screw pusher blade：AISI316L  stainless steel

drum: AISI316L stainless steel

Longitudinal anti-wear strip on the inner surface of the centrifuge drum：AISI316L stainless steel

Frame: high quality carbon steel

Frame surface: protective primer and top paint for carbon steel parts

Material of parts in contact with sludge: AISI316L stainless steel

Hood, liquid hopper, slag hopper material：316L stainless steel

Main bearing： FAG

Main seals：Taiwan NAK

Material butadiene rubber

Triangle belt: Narrow V-belt

 

Application:

The various materials listed below are only some uses, and new uses are constantly being added

Solid-liquid separation: Polyvinyl chloride resin, Ammonium sulfite, Barium carbonate, Strontium carbonate, Synde powder, Barium sulfate, Fiberboard sludge,  Sprinkling waste liquor, PTA, Blood meal

Sludge dewatering: Power plant sludge, Printing sludge, Paper sludge, Natural gas desulfurization sludge, Calcium carbide sludge, Drilling mud, Automobile sludge,  Activated sludge, Plaster oar

Particle size classification:Titanium dioxide, kaolin, starch, Drilling mud, Pulverized coal flotation, Calcium sulfate, Crystal flotation, diatomite, gypsum, bauxite, China clay, Ore

Liquid phase clarification: Soy protein, Peanut protein, Fruit juice, Vegetable oil, Citric acid, Waste oil purification, Wash water purification, Orange juice, Alum sludge