Measures to Ensure the Quality of Stone-Ground Flour Products

发布时间：2025-10-15 点击次数：

Flour mills seeking profitability must ensure the quality of their stone-ground flour products, as most consumers today prioritise quality when purchasing goods. To guarantee the quality of stone-ground flour, mills should implement the following measures:

　　1. Cleaning and Moisture Regulation: A comprehensive automated stone mill cleaning process typically involves three sieving stages, two beating stages, two stone removal stages, one selection stage, three magnetic separation stages (or wheat brushing/washing), one intensive hydration stage, and one spray hydration stage. However, in some imported foreign production lines, the cleaning process is overly simplified, failing to achieve optimal results and consequently compromising flour quality.

　　2. Raw Grain Quality: During processing, excessive fusarium-damaged kernels result in greyish-yellow flour colouration. When sprouted wheat exceeds 5% of the blend, the produced flour appears unappealing. Grain infested by insects or contaminated with insect excrement yields darkened flour with significantly diminished quality during milling.

　　3. Roller Technical Parameters: The primary function of the front-end roller in stone flour mills is to produce the core and bran. An excessively large front angle results in excessive flour content and poor cleaning efficiency, thereby degrading quality. The rear-end roller focuses on scraping while preserving bran integrity. An excessively small front angle causes excessive bran fragmentation, also diminishing flour quality.

　　4. Airflow volume, material flow direction and throughput in the sifter: The sifter employs sieves and air currents to selectively grade material, achieving ‘separate grades, combine like grades’ while maintaining material balance across systems and flexible flow paths.

5. Core mill grinding efficiency: As stone mill flour production predominantly employs medium-to-long-path flour discharge methods, consistent throughput must be maintained for each roller pair within the same system.

　　6. High-frame sieve mesh: The flour sieve in fully automatic stone-ground flour mills should not achieve complete sifting, allowing a certain percentage of unsifted material. This prevents ‘dry sieving’, where bran entering the flour would degrade its quality.