Five Systems of Flour Milling Plant

To achieve optimal flour milling results, a well-structured flour milling plant must efficiently separate materials based on their particle size and quality. This process creates distinct grinding systems, each playing a vital role in transforming raw wheat into high-quality flour. The five primary systems within a flour milling plant include the break system, scratch system, reduction system, purification system, and tailing roll system. Each of these systems contributes uniquely to the overall milling process.

1. Break System  

The break system is the initial stage of the milling process, primarily responsible for removing wheat bran while extracting valuable semolina, middling, and dunst. This system uses a series of break rolls to fracture the wheat kernels, maximizing the extraction of the endosperm, which is the nutrient-rich part of the grain. The design of the break system ensures that the bran remains mostly intact, allowing for efficient separation. During this phase, a small amount of flour is sifted out, setting the stage for subsequent processing.

2. Scratch System  

Following the break system, the scratch system further processes the semolina and other byproducts. Its primary function is to refine the separation of the endosperm from the wheat skin. The scratch system employs additional sifting mechanisms to isolate high-quality middling and dunst, ensuring that only the best components proceed to the next stage. This careful sorting is crucial for maintaining the quality of flour and optimizing the overall milling efficiency.

3. Purification System  

The purification system utilizes advanced techniques such as screening and winnowing to achieve a higher level of separation among semolina, middling, dunst, and wheat bran. By directing each component to the appropriate grinding system, this system ensures that only the best quality materials are processed further. The purification system enhances the overall milling quality by eliminating unwanted impurities, thereby improving the final flour product.

4. Reduction System  

The reduction system plays a critical role in producing flour of the desired fineness. It takes the middling and dunst sourced from the break, scratch, and purification systems and crushes them through a series of reduction rolls. This grinding process finely grinds the materials to achieve the specific flour particle size required for different baking applications. The reduction system is essential for producing high-quality flour that meets the diverse needs of bakers and consumers alike.

5. Tailing Roll System  

Positioned in the mid-to-rear section of the milling plant, the tailing roll system specializes in processing wheat bran, lower-quality middling, and sifted flour. This system effectively separates less desirable components from the higher-quality flour, ensuring that only the best product reaches the market. By refining these lower-quality materials, the tailing roll system helps optimize overall flour yields and minimizes waste within the milling operation.

In conclusion, the five systems of a flour milling plant work synergistically to transform raw wheat into a variety of high-quality flour products. Each system, from the break system to the tailing roll system, plays a crucial role in ensuring efficient processing, quality separation, and optimal flour production, thereby meeting the diverse needs of the baking industry and consumers.