Introduction

Our factory has a long history in design and build of specialized rotary dryers for processing coal slimes in coal preparation plants.

Coal rotary dryer is one of the common drying equipment for coal, which can dry various kinds of coal, such as brown coal,raw coal, coal slime, coal ash, coal cinder, coal slurry etc. The coal rotary dryer is widely used in power plant.

The coal fines are feed into the dryer and conveyed from the inlet to the discharge end by gravity due to a slight decline, and with shovel plates that line the inside of the drum. Hot gas is passed through the rotating drum in direct contact with the coal fines.The feed is tumbled up and over the shovel plates to maximize the agitation and contact with the hot gasses to induce drying. The dryer fill level is typically only 10% of the internal diameter. The low fill level aids in agitation of the product to insure direct contact with the hot gas. Due to the agitation and gas velocities, there is a substantial entrainment of particulate in the exhaust gas. The gas flow in the rotary dryer is typically co-current with the feed. The moisture and particulate have to be removed from the exhaust gas.

It can dry the coal with moisture of 40-70%, and reduce the moisture to 8-12%.

Parameter

MODEL	CAPACITY (t/h)	SLOPE (%)	GEARBOX	MOTOR	POWER (kW)
Φ1.0×10m	1-2	5	ZQ400	YCT200-4B	7.5
Φ1.2×12m	2-3	5	ZQ500	YCT225-4A	11
Φ1.5×15m	3-5	5	ZQ500	YCT225-4B	15
Φ1.8×18m	4-6	4	ZQ750	YCT250-4B	22
Φ2.0×20m	7-9	3.5	ZQ750	YCT280-4A	30
Φ2.2×22m	8-10	3.5	ZQ850	YCT315-4A	37
Φ2.4×24m	12-15	3.5	ZQ850	YCT315-4B	45
Φ2.8×28m	16-22	3.5	ZS145	YCT355-4A	55
Φ3.0×30m	20-25	3.5	ZS165	YCT355-4B	75
Φ3.2×32m	28-32	3.5	ZL130	YCT355-4C	90
Φ3.6×36m	38-40	3.5	ZL130	YVF2-315L2-6	132