廢谷物發(fā)酵渣壓榨機

廢谷物發(fā)酵渣壓榨

廢谷物是指谷物發(fā)酵后，酒精溶液被抽出后所剩下的物質(zhì)。因為它含有蛋白質(zhì)，所以被用作牛飼料。對農(nóng)民來說價值不大，所以如果農(nóng)民愿意用卡車運輸，小型釀酒廠很樂意免費贈送這些材料。

廢谷物通常是濕的，含水量為80%至85%。在這種狀態(tài)下，運輸很重，運輸時可能會滴水。而且，過幾天就會變酸。

做法是用壓榨機壓榨谷物。通常螺旋壓力機會將水分含量降低到61%到70%之間。此時，重量將減少三分之一到一半，“保質(zhì)期”也將延長。

SPENT GRAINS

Spent grain is the name given to material left after the grain is fermented and the alcoholic solution is drawn off. It is used as a cattle feed because of its protein content. The value to the farmer is not great, so smaller breweries are pleased to give the material away for free if the farmer will truck it.

Spent grain is normally wet, with 80% to 85% moisture content. In this state it is heavy to haul, and it is likely to drip while being transported. Furthermore, it will go sour in a few days.

The practice is to run spent grain through a press. Typically a screw press will reduce the moisture content into the range of 61% to 70%. At this point the weight will have been reduced by a third to a half, and the “shelf life” will have been extended.