WANT TO IMPROVE YOUR MAIZE MILLING EXTRACTION RATE TO ABOVE INDUSTRY AVERAGE? IT'S TIME TO CONSIDER THESE KEY FACTORS

LEARN MORE: ROFF’S R-70 – BEST-IN-CLASS EXTRACTION RATE

Posted by ROFF MILLING on 19 Jul 2019 12:24:26 PM

 

 

HERE’S ONE WAY TO GET AN ABOVE INDUSTRY AVERAGE MAIZE MILLING EXTRACTION RATE

In the production of maize meal, the extraction rate is the measure of maize meal produced from un-milled maize and the end products quality. Maintaining a stable rate of milling is a significant function of the maize milling factory.

The quality of the raw maize before milling, the type of mill used and milling processes are all critical factors to consider that determine and influence extraction rates. We also go into how you can achieve extraction rates that surpass the industry standard and in turn, increase capacity, the price, and ultimately your profitability.

R-70 Maize milling extraction rate
R70 EXTRACTION RATE

 

FACTORS AFFECTING MAIZE MEAL EXTRACTION RATES AND QUALITY

In the commercial market, the physical characteristics of maize influence the value of the grain and the final product. A constant issue with maize is that kernel size isn't always uniform and depends on the type of maize, and growing conditions. To determine the quality and value of maize, it’s measured by the test weight, moisture content, foreign materials like dirt or metal from harvesting plus, any damage to the kernels themselves.

The milling method you choose will also affect the extraction rate and quality. Milling alone is not how you get a suitable product consumers demand. To ensure the highest extraction rate per ton of un-milled maize here is how the various methods used stack up.

  1. Milling without any moisture - worst quality and extraction
  2. Single Conditioning (Right before milling the maize is briefly soaked) - Good quality and decent extraction
  3. Double conditioning (normally 5-6 hours as long as the millers prefers) - Good Quality,
  4. Best Quality if double conditioning is combined with a degerminator, best extraction (+ 2-3%)

To remove the pericarp, germ and tip cap, maize should be conditioned. Double conditioning isn't necessary for quality, but it does improve the extraction rate, and the higher moisture level in the final product increases the weight and thus the price.

Then the maize is degerminated and polished before being milled, separating the germ, endosperm and bran. Although some regions don't degerminate, the process not only gives a white meal, but also increases the shelf life due to less protein. To compensate for the loss in nutritional value, vitamins can be added afterwards with a Doser

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HERE'S ONE WAY TO GET AN ABOVE INDUSTRY AVERAGE MAIZE MILLING EXTRACTION RATE MEET ROFF'S R-70

Roff has spent nearly a decade designing and engineering milling machines that surpass the industry standard. Roff's performance and reputation as it is in the industry made us ideal partners for the South African Grain Laboratory (SAGL). SAGL is a non-profit organisation that provides unbias, objective and accurate quality testing and standards for the agricultural industry in Southern Africa. SAGL asked Roff to assist in developing a Maize Milling Index Calibration for the industry knowing Roff mill’s reliability and performance would be the best possible reference method.

The R-70 is a compact, all-in-one mill developed as a cost-effective means for entrepreneurs entering the maize industry yet easily upgradable to compete on a national level. The R-70 allows you to produce 50 to 100 tons of super or special maize meal per day depending on the maize quality and in which country.

At Roff, we pride ourselves on delivering milling machinery that outperforms conventional milling plants. But, machines that are also compact enough to be housed in existing buildings without the need for any special requirements. The R-70 has two levels yet is only 6.8 metres high and takes up 112 square meters. All you need to provide is a building, water and electrical supply. The compact design also makes viewing all the critical stages during operation easy for a single supervisor.

Maize field

 

You can hear from one of our satisfied clients about how the R70 was the key to their success, here

 

CHOOSE THE RIGHT MILL FOR YOU

 

Roff has been supporting small to medium mill owners since the '90s. We know our success depends on our clients' success. Which is why we consider them partners rather than just customers.

If you're unsure which mill you should choose to suit your needs, take our quick, easy survey and narrow down the perfect mill for your business.

We’re here to help drive success for your milling business.

 

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