5TPD Maize / Corn Flour Mill Machine
This maize flour production line has a designed capacity of 5 tons of maize flour per day. The process includes raw material cleaning, dehulling, crushing and milling.
Raw maize is firstly fed into cleaning equipment to remove dust, shrivelled kernels, stones, ropes and other impurities to guarantee raw material purity. The cleaned maize goes to iron roller maize dehuller for peeling, removing the bran to improve the taste and colour of finished flour. The dehulled maize is then sent to hammer mill for primary crushing. Crushed materials are conveyed to combined single milling machine for fine grinding and sifting to obtain qualified maize flour.
Raw Material Adaptation
Moisture content: Optimal 13.5% ~ 14.5%, max ≤15%. Too high moisture makes peeling and degerming difficult, finished product easy to mildew. Too low moisture causes kernel breakage, germ mixed into flour and shorten shelf life.
Impurity: Total impurities ≤1.0%. Minimize stones and metal impurities to protect peeling machine and roller mill.
Moldy kernels: ≤1%. Moldy maize will lead to dark color of maize flour and excessive aflatoxin.
Core Production Parameters
|
Daily processing capacity |
5 tons of Maize per 24 hours |
|
Total installed power |
31.5 kW (Full system power including cleaning, peeling, flour milling, dust removal and electric control) |
|
Flour extraction rate |
80-90% |
|
Daily flour output |
4-4.5 t/d |
|
Working mode |
Automatic continuous operation |
Finished Product Quality Standard
Complete production line can produce fine flour from 40 to 60 mesh. Also can reach to 80-90mesh according to customer requirement.
Flour fineness:
40-60 mesh, can be adjusted
Moisture:
≤14.0%, good storage performance, not easy to mildew
Processing Configuration
Cleaning Section
The cleaning section is designed to remove impurities from raw maize. It consists of vibrating grain cleaner, gravity destoner and magnetic separation device. Sifting removes large and small impurities; gravity separation eliminates heavy impurities such as stones and clods. The magnetic separation device attracts ferromagnetic metal foreign objects, protecting the downstream peeling and milling equipment from damage caused by hard metal particles. After cleaning, the impurity rate of raw material is greatly reduced, ensuring stable operation of subsequent processes and good finished-product quality.
Peeling and Crushing section
The peeling section adopts dry-type peeling technology, equipped with one emery-roller peeling machine and one iron-roller peeling machine. Maïs goes through two-step peeling treatment by emery roller and iron roller in sequence. The emery roller mainly polishes and removes maize husk; the iron-roller further rubs off residual bran layer to realize sufficient peeling and degerming. No water is added during the whole process. It keeps original moisture of maize, avoids moisture increase of raw material, which benefits subsequent milling process and finished-product storage.
Afterwards, the materials are crushed into uniform small particles by the crusher, producing about 30% primary maize flour simultaneously. All processed materials are then delivered to the fine milling section for further processing.
Flour Milling and Sifting Section
The pre-crushed maize particles go into the integrated single-unit milling equipment fitted with double-roller mills for fine grinding. Ground materials are automatically conveyed to the sifting machine. Equipped with replaceable screen meshes, the sifter allows customers to fit different-specification screens according to required fineness, so as to precisely control finished maize-flour granularity. maize flour meeting fineness requirements is delivered to the finished-product system, while under-ground coarse particles flow back automatically to the double-roller mills for re-grinding. Adopting circulating grinding-and-sifting technology, this section improves flour yield effectively and adapts flexibly to various production requirements. It delivers multi-grade maize flour featured by uniform particle size, smooth texture and stable quality.
Flow Chart
Cleaning
Peeling
Crushing
Flour Milling
Technical Parameters
|
Model |
YBMF5 |
|
Capacity |
5 tons per day (24 hours) |
|
Power |
31.5 kW |
|
Flour fineness |
40-60 mesh |
|
Flour outrate |
80-90% |
|
Installation Size (L*W*H) |
6m × 4m × 3.5m |
FAQ
Q1: What is the processing capacity of this maize flour line?
Raw material input: 5 tons of maize per day. Output depends on maize quality and moisture.
Q2: What moisture content is required for raw maize?
Optimal moisture:13.5%-14.5%. Max moisture shall not exceed 15%. Too-wet maize will affect peeling effect and finished-product storage.
Q3: Can we adjust the fineness of final maize flour?
Yes. Different replaceable screen meshes can be installed in the sifting machine to change flour fineness, multi-grade products are available.
Q4: Is this dry peeling or wet peeling process?
Adopt full dry peeling process: one emery-roller peeler plus one iron-roller peeler. No water adding during processing.
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