公开(公告)号：US4254560A

公开(公告)日：1981-03-10

申请号：US034057

申请日：1979-04-27

Applicant: Minoru Tanaka ,  Ryoji Harihara

Inventor： Minoru Tanaka ,  Ryoji Harihara

IPC: C10L5/00 ,  A62C3/04 ,  C10F5/00 ,  C10L5/02 ,  C10L5/12 ,  C10L9/00 ,  C10L9/02 ,  F26B7/00

CPC classification number: C10L5/02 ,  C10F5/00

Abstract: A method of drying brown coal in which the brown coal is pelletized before the drying into pellets of 2 to 5 mm dia. by a wet pelletizing process making use of the water contained by the coal itself as the binder. The brown coal in the form of dried pellets has a larger bulk density than the brown coal in the form of fine powders which are obtained when the brown coal after the exploitation is directly dried, and, therefore, contributes to the reduction of the transportation cost. In addition, the dried brown coal in the form of pellets can be handled and transported in quite an easy manner, as compared with the case of powdered brown coal. Further, thanks to the improved ventilation afforded by the gaps between the pellets, the possibility or chance of undesirable spontaneous combustion is greatly reduced.

Abstract translation: 一种干燥褐煤的方法，其中褐煤在干燥之前被造粒成2至5mm直径的颗粒。 通过使用煤本身所含的水作为粘合剂的湿法造粒方法。 干燥颗粒形式的棕色煤炭的堆积密度比褐煤形式的细粉末的形式更为密集，当开采后的棕色煤直接干燥时，这样得到的褐煤就有效地降低了运输成本 。 此外，与粉煤灰的情况相比，可以以相当容易的方式处理和运输颗粒形式的干褐煤。 此外，由于由颗粒之间的间隙提供的改善的通风，大大降低了不期望的自燃的可能性或机会。