Lignite dryer

Description

DESCRIPTION:
Lignite drying machine, as one type of horizontal rotary drying machine, is a special drying machine designed to adopt to different types of coals with varying characteristics, including raw coal, middling, cleaned coal, coal mud, peat coal, tail coal, flotation coal and lignite, etc. This machine has been widely used in companies and institutes with high coal consumption, such as large coal fields, coal mines, coal cleaning plants, coal preparation plants, power plants and steel mills. Thanks to its high mechanization, full automatization, high output capacity, excellent stability and low production cost, it has won warm praise from our users

DRYING PRINCIPLE::
Lignite, since it is with high moisture level, high volatile matter, low heating value and spontaneous combustion property, shall be a hard nut for its drying. Our company, according to the characteristics of lignite, has developed new MG series rotary drying machine in such a manner of applying the latest technology and process to dry it with constant-temperature smoke, seal it when feeding, dewater it under high temperature and seal it again when discharging so as to make the lignite drying be easily realized, lower the drying cost to the full extent and increase its economic benefit and market competitiveness significantly. During the drying process, the lignite may go through the following working areas successively after entering the machine: the first shall be the guide area where the high-moisture lignite may be dried rapidly by means of contacting with high-temperature wind while moving by shoveling plate after entering it; then, it comes to the cleaning area where the material curtain of lignite is formed after lifting by the shoveling plate and the binding coal may be crushed by its cleaning device as well so that the heat transfer area and the drying rate both may be increased; next, it is the area with inclined material-raising plate where the lignite is in low-moisture and loose state and may be processed to have the expected moisture content after heat exchanging so as to be ready to go into the final discharging area; finally, it is the discharging area where the roller has no shoveling plate and the materials may roll and slide into the dust settling bin to realize synchronization of discharging and dust settlement, and it is the end of the whole drying process.