UNIVERSITY OF SAN CARLOS – TALAMBAN CAMPUS

BRGY. NASIPIT, TALAMBAN, CEBU

DEPARTMENT OF MECHANICAL AND MANUFACTURING ENGINEERING

ME 517M – Industrial Processes

Rice and Corn Milling

SUBMITTED BY: SUBMITTED TO:

Mark Kim Densing Ely P. Dimagiba

Constantine Joseph R. Jamon PME, MEng (ME)

 Rice is the seed of the grass species Oryza sativa or Oryza glaberrima.
 As a cereal grain, it is the most widely consumed staple food for a large part of the world's human
population, especially in Asia.
 It is the agricultural commodity with the third-highest worldwide production, after sugarcane and
maize.

Processing
Combined Harvesters

 Combines reaping, threshing and winnowing.

High speed Conveyor

For transporting loads between operations, departments, levels, and buildings.

Silo

 Used to store material and protect it from the elements or weathering.

Reduces the moisture in the rice from 22% to 13% by means of exposure to hot air.

Roll Husker

Removes the outer coating of the rice to expose the inner layers.

Paddy separator and Destoner

 Paddy rice will always be within the mixture and it has to be fully separated if it was not removed
by the harvester and the husking machine.
 Destoners remove stones that may have been picked up
Rice whitener

 Used to turn rice white to improve taste, appearance and consistency.

Rice Sifter

Used to ensure even sizes of the final product for more satisfying consumption.
Rice polisher

 Similar to rice whitener but this machine focuses more on improving the appearance of the rice.
 This also ensures that the rice is free of paddy, dirt and bacteria.

Rice length grader

 Used to separate the short or broken grains from the full grains and put them in separate packs.
 Still powered by rollers.
Color Sorter

 Is used to group the rice according to their color after they have been cleaned and processed.
 They have to be separated because brown and white rice have different taste and benefits.
 For best consistency

Rice Packager

Packages the rice at certain weights and seals the bag or sack.
Common Rice Processing Components and Functions
Paddy Cleaner: The Satake Paddy Cleaner is an all-purpose separator designed for the efficient
separation of large coarse material and small fine materials such as grit during the cereal cleaning
process. The Cleaner can be adapted for use as a Silo Intake Separator and is also compatible with
an Aspirator unit or with a Hopper at the stock outlet.
Destoner: The Satake Destoner separates stones and heavy impurities from grains, utilizing bulk
density differences. Rigid, heavy-duty construction with thicker steel plates and a sturdy frame
ensures long life. This is the ideal machine for separating stones from grains in an effecient,
trouble-free manner.
Paddy Husker: Satake has incorporated its unique technologies into the new Paddy Husker for
superior performance.
Paddy Separator: The Satake Paddy Separator is an oscillation-type paddy separator with a very
high sorting performance and an easy maintenance design. All varieties of rice such as long grain,
medium grain and short grain can be sorted easily and accurately. It separates a mixture of paddy
and brown rice into three distinct classes: paddy mixture of paddy and brown rice, and brown rice.
To be sent to a husker, back to the paddy separator and to a rice whitener, respectively.
Rotary Sifter: The Satake Rotary Sifter incorporates a completely new design with many first-
time features developed out of years of experience and improving techniques. The machine can
sift milled rice efficiently and accurately into 2 - 7 grades: large impurities, head rice, mixture,
large brokens, medium brokens, small brokens, tips, bran, etc.
Rice Polisher: The Satake Rice Polisher cleans the surface of rice, significantly enhancing the
quality of finished products. The machine has achieved an excellent reputation in many countries
for its high performance and for the innovations which have been incorporated over the past 30
years.
Vertical Rice Polisher: The Satake Vertical Rice Polisher series of vertical friction rice whitening
machines incorporates the most advanced technologies available and has proved to be superior to
competitive machine in rice mills throughout the world. The versatility of the VBF for milling rice
of all degrees of whiteness with minimum brokens makes it the ideal machine for modern rice
mills. Its processing capability ranges from all kinds of rice (long, medium, and short) to other
cereal grains such as maize.
Vertical Abrasive Whitener: The Satake Vertical Abrasive Whitener range of machines
incorporate the most advanced techniques of vertical milling and has been proven to be superior
to similar machines in rice mills throughout the world. The versatility of the Satake machines for
milling rice of all degrees of whiteness with the minimum brokens makes it the ideal machine for
modern rice mills.
Thickness Grader: The Satake Thickness Grader was developed for the most efficient separation
of broken and immature kernels from rice and wheat. The screens are selectable from a wide range
of available slot sizes.
Length Grader: The Satake Length Grader separates one or two kinds of broken or shorter grains
from whole grain by length. Broken grain or shorter grain which is more than half of the whole
grain in length cannot be separated using a sieve or thickness/width grader.
Color Sorter: The Satake Color Sorter inspection machine rejects foreign materials, off-color and
other bad product that are mixed in with grains of rice or wheat. Using lightning and high resolution
cameras, the software identifies defective product and ejects the "rejects" by using small air
nozzles at high velocities.