Monday, May 20, 2024



Modern centrifuges are used in technical processes for the mechanical separation of mixtures of solids and liquids. Sedimentation and filtration are mechanical separation processes, in contrast to distillation, incineration and thermal drying, which are thermal separation processes. In many processes, the mechanical separation has a decisive influence on product quality, production efficiency and environmental impacts. Mechanical separation processes are found in practically all industrial sectors, including but not limited to food, chemical, pharmaceutical, biotech, mineral, and environmental processing.

Advantages of modern centrifuges

Modern centrifuges have many advantages in comparison to other separation processes such as filtration and static settling:
• Compact designs
• Sealed construction to control odor emissions and avoid contamination of the product
• Ease of operation with continuous or automatic control systems
• Limited consumables such as filter media or filter aids

Flottweg Decanter Z4E for the processing of drilling mud


To obtain optimum results, solid bowl decanter centrifuges must be custom designed to suit specific separation processes.
Flottweg meets the needs of the vast range of applications by offering a variety of basic designs, such as the decanter, Tricanter®, Sedicanter® and Sorticanter®. Solid bowl centrifuges are used in most areas of mechanical liquid-solid separation.

The following basic process operations are possible using solid bowl decanter centrifuges:

• Clarification of liquids
• Dewatering of sludges and suspensions
• Thickening of sludges
• Separation of three-phase mixtures, i.e. two immiscible liquid phases and a solid phase
• Classification of solids in a suspension according to particle size (wet classification)
• Sorting of solids by density


Vegetable / Food /Animal Raw Materials

• Algae
• Animal fat
• Blood
• Brewer’s yeast
• Biodiesel
• Bioethanol
• Biogas
• Casein
• Cellulose derivatives
• Coffee
• Fermentation products
• Fish meal
• Fish oil
• Fish pump water
• Fleshings
• Fruit juice
• Gelatin
• Kieselguhr
• Lactose
• Lignin
• Meat
• Molasses
• Pectin
• Potato
• Protein
• Sorbose
• Soy protein
• Spent grains
• Starch
• Stillage
• Surimi
• Vegetable extracts
• Vegetable juice
• Vegetable oils
• Vitamins
• Wine/must

Chemical / Pharmaceutical Products

• Aluminium hydroxide
• Barium sulphate
• Basic dyes
• Calcium fluoride
• Calcium sulphate
• Color pigments
• Cryolite
• Dimethylterephthalate (DMT)
• Epoxy resin
• Fluorescents
• Iron oxide
• Latex
• Lead oxide
• Phosphate compounds
• Phosphoric acid
• Plastic derivates/additives
• Polyethylene (HDPE)
• Polypropylene
• Polystyrene
• Salts
• Silicate
• Sodium chloride
• Titanium dioxide
• Tricalcium phosphate
• Zinc carbonate
• Zinc oxide
• Zinc sulfate


• Bauxite
• Bentonite
• Calcium carbonate
• Carbide sludge
• Clay
• Copper extraction
• Graphite
• Gypsum
• Iron hydroxide
• Kaolin
• Magnesium hydroxide
• Mica
• Silica
• Silicium
• Silicon carbide

Environmental Protection / Recycling

• Drilling mud
• Industrial wastewater
• Manure
• Municipal wastewater
• Organic waste
• Paint sludge
• Plastic sorting
• Sand and gravel wash water
• Steelwork sludge

Mineral Oils

• Tar cleaning
• Oil sludge
• Slop oil treatment

Examples from approximately 1000 different applications

The production of biodiesel is a typical application for which centrifuges are used