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_Two Types of Pellet Mill

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_The total of biomass resources is abundant, second to the source of coal, petroleum and gas, biomass energy is the fourth greatest energy. According to estimate of biologist, land of the earth could produce 100~125 billion ton biomass; sea could produce 50 billion biomass. The production capacity per year is much more than the requirement around the world, is 10 times than the current total energy consumption. In order to use up biomass energy as soon as possible, our mankind invented pellet mills. Due to the different market demand, pellet mill slowly differentiation into two description in the process of development.

There are two kinds of pellet mill: flat die Pellet Mill and ring die pellet mill. As their names describe, the model die plate of flat die pellet mill is the disc and the level of resettlement; the model die plate of ring die pellet mill is round the ring and vertical resettlement. And there are also two types of flat die pellet mill: die-running and roller-running. Die-running pellet mill means the die has been driven by the principle axis, the press roller do not run; the roller-running pellet mill is that the press roller has been driven by principle axis, the die do not run.

In a general way, die-running flat die pellet mills could be more used in the small scale production, and the roller-running flat die pellet mill is often used in large scale production.

Now let's take a look at the differences between flat die pellet mill and ring die pellet mill. The flat die pellet mill feed vertical, material could get down to the model die plate easily and evenly, for this reason it solved the problem that sawdust cannot flow into the model die plate successfully. The ring die pellet mill has to be feed by the spiral feeder, the guide plate has to be adjusted continuously because of the different density of the material. Under the same diameter in the mould, for the flat die pellet mill, the feed quantity could be enlarged by enlarging the diameter of the press roller, but the press roller could not be changed in the ring die pellet mill. Both of the two sides of the die plate in the flat die pellet mill could be used, through this we may say that the life of the die plate in flat die pellet mill can be two times of the die plates in ring die pellet mill. Flat die pellet mill has low rotational speed and output less breakage.

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