cement rotary kilns/clinker rotary kiln/limestone rotary kiln

Rotary dryer is used widely. It can be used to dry construction sand, abandoned tailings, new energy material, ore, powder and coal. The dry selection shall consider the local fuel, place and environmental protection.

Rotary kiln

Main technical prameter of rotary kiln

Type	Technical parameters			Reduction drive		Main motor			Support quantity	Weight
	Rotation speed (r/min)	Obliquity (%)	Output (t/h)	Type	Ratio	Type	Power (KW)	Rotation speed (r/min)
2.2*50	0.125-1.25	3.5	5	ZS145-11	157	YCT280-4A	30	1320/132	3	130.71
2.5*50	0.516-1.549	3.5	8	ZS165-7	99.96	YCT355-4A	55	1320/140	3	167.5
3*48	0.3309-3.309	3.5	28	ZI130-14	32.11	ZSN4-250-21B	90	1000/100	3	237
3.2*50	0.398-3.975	3.5	42	ZI130-16	40.85	ZSN4-280-11B	190	1500/150	3	263
3.3*52	0.91-3.91	3.5	50	ZSY500-28	27.707	ZSN4-315-082	190	1000/100	3	280.8
3.6*55	3.5	3.5	76	ZS117-5-II	79.2	ZSN-280-11B	125	1000/200	4	368.7
4*60	0.396-3.96	3.5	105	ZSY630-35.5	34.601	ZSN4-355-092	315	1000/100	4	487.5
4.2*60	0.4165-4.165	3.5	143	ZSY710-35.5	35.526	ZSN4-355-12	420	1000/100	4	556.1
4.5*65	0.46-1.45	4	168	JH800C-SW306	35.5	ZSN4-400-22	560	1000/100	4	710
4.8*74	0.35-4	4	208	JH710C-SW305-40	42.226	ZSN4-400-092	630	1500/130	4	841

Structural Featuers of Rotary Kiln

1. Supporting device apply rolling bearing ( few with sliding bearing) to simple the bearing structure to slow down the kiln power consumption and it also improve the maintenance and inspection conditions.

2. Catch wheel: including two kinds mechanical wheel and hydraulic pressure

3. Gears: single or double. Control the rotating speed by buncher, DE machine and frequency variable motor. Be reliable, energy-saving, and efficient.

4. Cylinder type bolster: lower bolster has three types: fixed, zoom and floating. The structure is simple, replacement is convenient and won’t hurt cylinder.

5. Sealing equipment: there are many kinds for choice according to kiln models, including air cylinder edge sealing, spring edge sealing, and graphite block sealing and combination for above. The feather is adaptive for cylinder rotating and swing. And sealing effect is very good.

Drawing of rotry kiln

Principle of Operation

The kiln is a cylindrical vessel, inclined slightly to the horizontal, which is rotated slowly about its axis. The material to be processed is fed into the upper end of the cylinder. As the kiln rotates, material gradually moves down towards the lower end, and may undergo a certain amount of stirring and mixing. Hot gases pass along the kiln, sometimes in the same direction as the process material (co-current), but usually in the opposite direction (counter-current). The hot gases may be generated in an external furnace, or may be generated by a flame inside the kiln. Such a flame is projected from a burner-pipe (or "firing pipe") which acts like a large bunsen burner. The fuel for this may be gas, oil or pulverized coal.

Flame of rptary kiln

Brick of rotary kiln

A Rotary kiln is a pyroprocessing device used to raise materials to a high temperature (calcination) in a continuous process. Materials produced using rotary kilns include:

Cement

Lime

Refractories

Metakaolin

Titanium dioxide

Alumina

Vermiculite

Iron ore pellets

Using site of rotary kiln

Factory information