اختبار أداء جهاز مصنع محليا لقياس متانة الحبيبات العلفية

Abstract EN

Pellet durability is an important indicator ofpellet quality.

A pellet durability test instrument (equipment) was developed (manufactured) locally (University of Baghdad, Iraq).

The unit consists of a tumbling can (to receive and drop the sample) with the dimensions of 300×125×300 mm.

The knife is affixed at a perpendicular and diagonal angle inside the can and its length is 230 mm.

One portion of the knife (serrated for 50 mm) has a projection of 50 mm.

A firm door was designed to be dustproof.

The can is placed on an 81cm (height) shaft .

The can has the ability to rotate around a perpedicular axis which is powered by an electric motor..

The local durability instrument was used to test pellets produced under the following conditions: 1.

Pellets were manufactured by pellet screw mincer with hole diameters of 4.4 and 7 mm 2.

Mash particle size (grind) to go through 1 and 2 mm sieve diameters.

3.

Mash moisture of 35.6, 38.9 and 42.3%.

Pellet durability, pellet density and pellet water stability were studied in this experiment.

A completely randomized design (CRD) with three replications was used.

The results showed that increasing the size of the production holes led to a significant decrease in pellet durability and water stability; however, there was no significant effect on pellet density.

Decreasing the grind size led to significant increase in pellet durability, pellet density and pellet water stability .

Increasing mash moisture caused significant increase in pellet durability and pellet water stability; however, it significantly lowered pellet density.

In addition there was a high correlation between mash moisture and pellet durability.