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PAES PostHarvest Macinery > PNS/BAFS PAES 251&252:2021 - Corn Mill > Flashcards

PNS/BAFS PAES 251&252:2021 - Corn Mill Flashcards

1
Q

combination of corn grits other than corn grits nos. 10 to 18 (e.g. corn grits no. 20, corn grits no. 24) floured corn and bran

A

by-product

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2
Q

grits with particle size from 0.708 mm to 0.841 mm which passed through US Sieve No. 20 but are retained in US Sieve No. 25

A

corn grits no. 20

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3
Q

grits with particle size of 0.707 mm and smaller which passed through US Sieve No. 25

A

corn grits no. 24

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4
Q

fine powder by-product of corn milling process

A

floured corn

fines

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5
Q

embryo of the kernel removed during the degermination process

A

germ

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6
Q

outer covering of the corn kernel removed during the milling process

A

pericarp

hull

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7
Q

attachment of the kernel to the cob; the entryway of nutrients, water, etc. to the kernel

A

tip cap

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8
Q

attachment of the kernel to the cob; the entryway of nutrients, water, etc. to the kernel

A

tip cap

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9
Q

combination of germ, tip cap, pericarp, and corn grits

A

bran

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10
Q

whole grain of shelled corn

A

corn kernel

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11
Q

milled corn grains where the outer covering (pericarp), germ (embryo), and tip cap have been removed leaving only the endosperm that passed through different sieve sizes

A

corn grits

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12
Q

machine that removes the pericarp, crushes the kernel, polishes the grits, and sorts the grits into different sizes

A

corn mill

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13
Q

used to remove the germ, tip cap, and pericarp from the corn kernel

A

degermer

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14
Q

ratio of the weight of degermed corn kernels to the initial weight of the degermer output sample, expressed in percent (%

A

degermer efficiency

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15
Q

process of separating germ, pericarp, and tip cap from the endosperm and reducing it into grits without soaking the corn kernels before milling

A

dry milling

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16
Q

part of the corn mill used to grind the degermed corn kernels into corn grits

A

grinding assembly

17
Q

part of the corn mill permitting smaller particles to fall through the openings by
means of oscillating or rotating screen, wire mesh, or perforated metal sheet

A

grit size separation assembly

sifter

18
Q

grits with particle size from 1.69mm to 2.00mm which passed through US Sieve No. 10 but are retained in US Sieve No. 12

A

corn grits no. 10

19
Q

grits with particle size from 1.42mm to 1.68mm which passed through US Sieve No. 12 but are retained in US Sieve No. 14

A

corn grits no. 12

20
Q

grits with particle size from 1.20mm to 1.41mm which passed through US Sieve No. 14 but are retained in US Sieve No. 16

A

corn grits no. 14

21
Q

grits with particle size from 1.01mm to 1.19mm which passed through US Sieve No. 16 but are retained in US Sieve No. 18

A

corn grits no. 16

22
Q

grits with particle size from 0.842mm to 1.00mm which passed through US Sieve No. 18 but are retained in US Sieve No. 20

A

corn grits no. 18

23
Q

ratio of the total weight of main products to the total weight of corn kernel input, expressed in percent (%)

A

main product recovery

24
Q

quantity of corn kernels that the corn mill can process to produce corn grits of desired size per unit of time, expressed in kilograms per hour (kg/h)

A

milling capacity

25
Q

A grinder consists of a fluted steel shaft operating inside a perforated steel screen, which also carries a projecting strip of steel whose distance from the shaft can be varied.

A

Steel huller

26
Q

A grinder consists of rotating metal blades that reduce the size of degermed corn kernels as a result of impact.

A

Rotary blade/hammer mill-type

27
Q

Degermed corn kernels are ground using pair/s of rollers made of steel that rotate in different directions.

A

Steel roller

28
Q

A grinder that uses a pair of flat disks with series of grooves on the disk face. One disk rotates while the other disk remains stationary.

A

Attrition-type

29
Q

Corn grits are sorted into different sizes by passing through sieves of different mesh sizes by reciprocating motion.

A

Oscillating

30
Q

Corn grits are sorted into different sizes by passing through rotating sieves of different mesh sizes.

A

Rotary

31
Q

What should be used in the manufacture of the different components of corn mill?

A

steel bars

metal sheet or plate

32
Q

Maximum allowable noise level for Corn Mill?

A

100 dB (A)

33
Q

Main product recovery for corn mill

A

55%

34
Q

Maximum losses for corn mill

A

5%

35
Q

Degermer efficiency

A

80%

36
Q

Warranty for corn mill

A

one year

PAES PostHarvest Macinery (3 decks)

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