Inorganic chemical industry fertilisers separation continuous automatic decanter centrifuge

Brief introduction of Inorganic chemical industry fertilisers separation continuous automatic decanter centrifuge

 

Decanter centrifuge uses the centrifugal sedimentation to separate the suspension, uses the spiral to unloading material.It is continuously charging, separating, discharging at full speed.

It is used in the suspension(in 0.0005~2mm, concentration 2-40%) solid-and-liquid separation, size classification, liquid clarification .

Especially ,it issuitable for the suspension separation that with difficult in filter cloth recycling, and the material with large concentration and big size range.

 

 

Working principle of Industrial corn potato starch decanter centrifuge

 

There is spiral which is the feeding spiral which is has the same axis with the drum.The spiral and the drum rotate in different speed but in the same direction.The rotate difference is caused by the differential.The suspension enters the spiral through the feeding pump in the centre, when it starts to speed up the material goes into the drum.

Under the effect of the centrifuge force, the relatively heavy solidoid sediments into slag blanket on the surface of the drum wall, then the spiral push the slag blanket to the drum cone section for further dehydration, latter it will be discharged from the small section slag hole.While the relatively light liquicdoid forms the inner liquid cycle, and it will be discharged from the large end overflow gate.

 

 

Parameters and influencing factors of the separation

 

01. Feed, throughput and residence time

Through the feed, the separation medium to be processed can be input into the centre of the infeed chamber of the scroll, where it is accelerated. The throughput will have an influence on the residence time.

 

02.Acceleration

The separation medium reaches its maximum speed in the decanter bowl, causing the solids to settle on the bowl inner diameter. A characteristic feature of the bowl is its cylindrical/conical shape.

 

03.Differential speed

There is a differential speed between the decanter bowl and the scroll, which is created by a gear unit on the industrial decanter centrifuges. The differential speed determines the solid content in the outfeed.

 

04.Filling volume / weir discs or overflow weir

Pond depth / weir discs

The clarified liquid flows to the cylindrical end of the bowl in the decanter centrifuge, from where it runs out through openings in the bowl cover. These openings contain precisely adjustable weir discs/weir plates by means of which the pond depth in the bowl can be set. The weir discs determine the filling volume of the bowl.

 

 

Main technical parameters:

 

Model	Drum Dia. (mm)	Drum length (mm)	Length-Dia. Ratio	Rotation speed (r/min)	Separation factor (w2r/g)	Capacity (m3/h)	Motor power (Kw)	Weight (kg)	Dimension (mm)
LW220x930	220	930	4.2	5000	2835	0.5-5	7.5	1200	2420x700x1010
LW300x1200	300	1200	4.0	4000	2550	1-5	7.5-11	1500	2680x830x1280
LW355x1600	355	1600	4.5	3800	2868	1-20	15-18.5	1850	3490x860x1200
LWS400X1200	400	1200	3.0	3650	3000	1-5	15-18.5	2500	2990x960x1205
LW400X1800	400	1800	4.5	3650	3000	2-25	15-22	2500	3890x1020x1205
LWS400X1800	400	1800	4..5	3650	3000	2-10	15-22	2500	3890x1020x1205
LW450x2000	450	2400	4.4	3450	3000	3-35	22-37	3000	4297X1080X1385
LWS450X2000	450	2600	4.4	3450	3000	3-35	22-37	3000	4297X1080X1385
LW500X2000	500	2000	4.0	3000	2500	5-45	30-37	3800	4330X1140X1470
LWS500X2000	500	2000	4.0	3000	2500	5-45	30-37	3800	4330X1140X1470
LW530X2280	530	2280	4.3	2900	2500	15-65	45-55	5000	4924X1170X1540
LWS530X2280	530	2280	4.3	2900	2500	15-65	45-55	5000	4924X1170X1540
LW580X2500	580	2500	4.3	2780	2500	20-80	55-75	6500	5205X1270X1540
LW650X2800	650	2800	4.3	2500	2270	20-110	75-90	7000	4300X1900X1350
LW760X3040	760	3040	4.0	2250	2150	30-150	90-132	8500	5000X2500X1500

 

 

Range of applications:

 

The main application of decanter centrifuges is to separate large amounts of solids from liquids on

a continuous basis. They are also used to wash and dry various solids in industry, such as polystyrene

beads, clarify liquids and concentrate solids.

 

Below table displays various examples of the utilisation of decanter centrifuges in various industries.

Industry	Examples
Food processing	Edible animal fat Animal protein Protein recovery Plant oils such as olive oil and vegetable oil Wine (clarification) Fruit, berries and vegetable juice Soy protein Dairy (recovery of lactose, whey fines and cheese fines) Coffee and tea Pectin
Petrochemical/oil	Refining Dewatering Oil well drilling Lubricating oil additives Waste oil stream recycling
Waste recycling	Municipal wastewater Cleaning of wash water
Fish processing	Fish meal Fish oil
Chemical	Herbal medicines Chemical extraction Ethanol
Mineral processing	Bentonite and titanium dioxide manufacturers Kaolin clay and calcium carbonate processing
Organic chemical industry	Organic material and end products
Polymer industry	Thermoplastics for example PVC, synthetic rubber and fibres
Inorganic chemical industry	Bleaching agents Acids Silica products Fertilisers

 

 

Factors to consider when selecting a decanter centrifuge:

 

One of the important factors to consider when using a decanter centrifuge is the scale of the process.Decanter centrifuges should ideally be used in large scale processes. This is to optimise economic value since smaller scale processes do not necessarily require such costly equipment to

attain the desired product.

 

Another factor to be considered is the length to diameter ratio of the decanter centrifuge.A length to diameter ratio of 2, 3 and 4 are commonly used. Decanter centrifuges with the samediameter but the longer length would have a higher capacity for conveying solids and attain

a larger suspension volume, which would enhance the settling out of fine solids.

 

The magnitude of centrifugal force being used must also be considered. Centrifugal force aidswith dewatering but hinders the transport of cake in the dry beach. Hence, a tradeoff exists between cake conveyance and cake dewatering. A balance between the two is necessary for setting the pool and G-force for a particular application. Additionally, a larger centrifuge will produce better separationthan a smaller centrifuge with the same bowl speed as a greater G-force would be produced.

 

 

Our service:

 

Pre-Sales Service

1. Product consulting and design service.

2. Professional production team.

3. Modernize Factory.

Sale Service

1. Quality Control Service.

2. Report, video data of the production

3. Inspection process to our customer

4. To ensure the delivery time.

After-Sales Service

1. Engineer Technical support.

2. Regular spot visit.

 

Last, besides decanter centrifuge, also we have various centrifuge, like SS/PS centrifuge, SD/PSD centrifuge, SGZ/PGZ centrifuge, tubular centrifuge, disc centrifuge and so on, any need also you can write to me.