Two-phase Three-phase Decanter Centrifuge

Decanter Centrifuge is used to separate suspended solids ≥2μm in diameter and treat the drilling mud and fluids. It is especially effective when used in oilfield service industry, industrial service industry and especially in environmentally sensitive areas. This type of centrifuge is high in recovery rate, effective in solids control and remarkable in the reduction of cost spent on drilling mud resupplying and management. It is a very sophisticated dynamic balancing machine, able to operate stably with the whirling speed ranging from 0 to 3900 and generate centrifugal force of 3000G.

Decanter Centrifuge can meet with different requirements of mud treatment under various drilling conditions, that can do sedimentation and separation for particles more than 2 μm. After treatment, the mud can achieve ideal viscosity and proportion, resulting in better recycling, high efficiency, saving and environment protection.

Structure Introduction

Model	BC450×842N	BC450×1000N	BC355×1258D-N	BC450×1258D-N	BC530×1320D-N
Drum Dia.	φ450mm	φ450mm	φ355mm	φ450mm	φ530mm
Drum Length	842mm	1000mm	1258mm	1258mm	1320mm
Lambda Ratio	1.9	2.2	3.5	2.8	2.5
Drum Shape	Conical
Speed	1800rpm	2200rpm	3200rpm	3000rpm	2800rpm
Main Motor	22Kw	30Kw	30Kw	37Kw	55Kw
Accessorial Motor	5.5Kw	7.5Kw	7.5Kw	11Kw	11Kw
Max. Capacity	40m³/h	50m³/h	35m³/h	60m³/h	65m³/h
Separation Point	5~7microns		2-5microns
Separation Factor	815G	1215G	2035G	2250G	1817G
Feeding Pump Power (KW)	4(submersible)	5.5(submersible)	7.5(submersible)
Dimension (mm)	2600×1550×1650	2750×1550×1700	2900×1480×1650	2900×1550×1650	3300×1700×1750
Weight	3000kg	3200kg	3000kg	3200kg	4000kg

Decanter Centrifuge Features and Benefits:
1. Innovative design includes longer bowl, allowing drilling fluids to thread through more slowly, thus resulting in drier solids and finer separation point;
2. Big bowl offers big volume. It also generates high-G force;
3. Stainless steel bowl, scroll, compartment are available and covered with corrosion-proof coating so as to have longer lifespan;
4. Tungsten carbide scroll points with wide spacing flights at tapered end create a finer layer of conveyed solids for consistent, uniform separation and maximum solids control efficiency.
5. Electrical Components complies with SIEMENS/Schneider ATEX or IEC Ex.
6. Screw pump and submersible slurry pump are provided to meet liquid feeding requirements of centrifuge of various customers.

How Do Decanter Centrifuges Actually Work
Decanter Centrifuge is driven by two motors. The main motor drives the drum and the outer casing of differential through belts while the auxiliary motor, after the differential shifting speed, drives the spiral propeller. This will make the drum and the spiral propeller rotate in the same direction with a certain differential speed.

Application:
Solid-liquid separation (starch separation, mineral separation)
Sludge dewatering (drilling mud, papermaking sludge, printing and dyeing sludge, power plant sludge, activated sludge, etc)
Particle size grading (drilling mud, pulverized coal flotation, starch, various mining, etc )
Liquid clarification (soybean protein, peanut protein, waste oil purification, all type juice drinking, etc)

How To Choose a Decanter Centrifuge
Mudflow: The flow rate is related to bowl size and rotation speed.
Industry: Use it in oil drilling, water drilling or HDD?
Depth: Drilling depth is another issue considered during selection. Usually, depth over 3500m, the high-speed one should be utilized.
Drilling fluid property: Viscosity, mud base, and so on. Kindly confirm the applicability from mud engineer or centrifuge supplier.
Function to achieve: Separation, or recycle?