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The animal fat fractionation process leverages differences in the melting points and solubility of various triglycerides within animal fats. Through precise temperature control, a single-source fat is separated into multiple fractionated products with distinct physical and chemical properties. In essence, it physically “splits” bulk fats—such as beef tallow, lard, fish oil, and milk fat—into softer and harder fractions to precisely meet the diverse needs of food, nutritional, and industrial applications. As a professional provider of animal fat processing solutions, Ocean’s customized production lines seamlessly deliver efficient and standardized fractionation solutions for various animal fat feedstocks.
1.Preheating and Melting
The raw animal fat is first heated until completely melted (typically above its melting point) to eliminate any pre-existing crystal structures, providing a uniform liquid foundation for subsequent controlled crystallization. This standardized preheating procedure is essential for stable and high-precision animal fat fractionation, ensuring consistent quality of final fractionated animal fat products.
2.Cooling and Crystallization
This is the core step of the process. The melted fat is slowly and uniformly cooled in a crystallizer through a precisely controlled cooling program and moderate agitation. This process encourages high-melting triglycerides to gradually form stable, uniformly sized crystals (typically the desirable β' polymorph). The cooling rate is critical: too fast creates numerous fine, unstable crystals that are difficult to filter; too slow reduces overall production efficiency. Professional animal fat fractionation equipment ensures precise temperature control and stable crystallization outcomes throughout this stage.
3.Crystal Maturing
After reaching the target crystallization temperature, the temperature is held stable for a specific period. This "maturing" stage allows the crystal structure to further stabilize and grow, forming stronger, more filterable crystal aggregates and improving the efficiency of subsequent solid-liquid separation. This stage optimizes fraction yield and purity, ensuring high-quality fractionated animal fat products throughout the processing workflow.
4.Filtration
After maturing, the resulting slurry (containing solid stearin crystals and liquid olein) is transferred to separation equipment. Efficient filtration systems, such as vacuum drum filters or membrane filter presses, are typically used to separate solid stearin from liquid olein, producing two high-purity fractionated animal fat products with different melting points and various industrial applications.
Among various animal fats, beef tallow stands out as the most classic and economically significant raw material for industrial fractionation, owing to its stable supply and pronounced fractionation effect. This process perfectly exemplifies how bulk commodities are transformed into high-value, specialty fats.
As a representative of highly nutritious oils, fish oil relies on fractionation to isolate and concentrate specific functional components, notably long-chain Omega-3 polyunsaturated fatty acids (such as EPA and DHA). This is a core technology for producing high-purity nutritional supplements and pharmaceutical-grade raw materials.
Proven Expertise & Project Experience
We possess proven expertise and strong project execution capabilities in animal fat fractionation. We have successfully designed and delivered customized animal fat processing solutions and turnkey fractionation systems for a wide range of animal fats, including lard, beef tallow, and fish oil, for industry leading clients such as Wilmar and Shuanghui. These proven track records demonstrate the stability and reliability of our animal fat fractionation plants and production lines, delivering long-term value to our clients’ processing operations.
Pure Physical Process
The mainstream dry fractionation process does not involve chemical solvents or additives, relying solely on precise temperature control and physical separation. The fractionated animal fat products are pure, free from chemical residues, aligned with clean-label trends, and environmentally friendly. This environmentally friendly processing approach is a key advantage of Ocean’s industrial animal fat processing solutions.
Expanded Applications & Added Value
Animal fat fractionation transforms generic animal fats into high-value specialty fats with expanded applications. For example, beef tallow can be fractionated into high-melting stearin (for shortening, margarine, and cocoa butter equivalent bases) and low-melting olein (for frying oils and liquid oil applications), greatly expanding applications in baking, confectionery, foodservice, and industrial sectors. Ocean’s professional animal fat fractionation equipment helps maximize the economic value of raw animal fats for industrial processors.
Precise Crystallization with Coil Heat Exchange
Ocean's crystallizer uses 304 stainless steel internal coils, delivering 2–3× larger heat transfer area than conventional jacketed designs. This enables ±0.5°C temperature accuracy, twice the cooling rate (4–5 hours vs. 8–10 hours per batch), and consistently higher fraction yields.
More critically, our coil system uses steam—not thermal oil. Competitors' carbon steel jackets risk corrosion and oil leakage that can contaminate and scrap an entire batch (over $12,500 loss per incident). Ocean's all-stainless coil design ensures safer, more reliable crystallization with lower energy costs.
Our animal fat fractionation lines are designed to process a wide range of animal fat feedstocks, including beef tallow, lard, milk fat, chicken fat, and fish oil. For most animal fats, dry fractionation is the preferred industrial method due to its cost-effectiveness, efficiency, and safety. The system processes various raw materials into standardized fractionated animal fat products, meeting diverse application requirements and supporting customized animal fat processing solutions.
Specifically engineered for animal fat fractionation, enabling precise temperature profiling and uniform crystal growth across different feedstocks—beef tallow, lard, and fish oil. The coil-type design delivers superior heat exchange efficiency and ±0.5°C accuracy, ensuring consistent separation of stearin and olein fractions.
The core solid-liquid separation equipment for animal fat fractionation. Membrane squeezing and high-pressure filtration effectively reduce oil content in the stearin cake, maximizing the yield of both stearin and olein fractions while maintaining high product purity.
Supplies a stable, precisely controlled low-temperature coolant critical for the crystallization stage. Reliable chilling performance ensures reproducible cooling curves batch after batch, directly impacting fractionation efficiency and final product quality.
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Q: What is fractionated animal fat and what is it used for?
A: Fractionated animal fat refers to high-value specialty fat products obtained by physically separating bulk animal fats through professional fractionation technology. Different fractions feature distinct melting points and functional properties, making them widely used in food processing, baking, confectionery, foodservice, nutritional products, and industrial applications. Ocean provides customized animal fat processing solutions to produce targeted fractionated products based on specific raw materials and application requirements.
Q: What are the main methods for animal fat processing and fractionation?
A: The main industrial methods for animal fat fractionation include dry fractionation, solvent fractionation, and low-temperature fractionation. Dry fractionation is widely applied to common animal fats such as beef tallow and lard due to its safety, environmental benefits, and cost-effectiveness. Solvent and low-temperature fractionation methods are typically used for high-value raw materials such as fish oil to achieve specific functional components. Ocean develops customized animal fat processing solutions and configures suitable fractionation equipment according to raw material characteristics and target products.
Q: What equipment is required for animal fat fractionation?
A: Industrial animal fat fractionation mainly requires crystallization and solid-liquid separation equipment, including crystallizers and plate-and-frame filter presses. The crystallizer enables precise cooling, controlled crystallization, and crystal maturation, while the filter press efficiently separates solid stearin from liquid olein. Ocean designs and manufactures optimized animal fat fractionation equipment and processing systems to ensure stable operation, high separation efficiency, and consistent product quality.
Q: What factors affect the quality of fractionated animal fat products?
A: The quality and yield of fractionated animal fat products are affected by several factors, including raw material composition, cooling rate, crystallization temperature, agitation intensity, and maturation time. Precise process control is essential to achieve stable crystal formation and efficient separation. Ocean’s animal fat fractionation systems are engineered with accurate temperature control and optimized processing parameters to ensure reliable fractionation performance.
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