PENGFEI Rotary Kiln - AGICO CEMENT

Description: Rotary kiln, or rotary calcining kiln (commonly known as rotary kiln), is a special heavy equipment. The rotary kiln can be divided into cement rotary kiln, lime rotary kiln, kaolin rotary kiln, rotary kilns for nickel, chromium, iron and lithium ore, coal efficient clean rotary kiln, titanium dioxide rotary kiln, magnesium oxide and zinc oxide rotary kiln, solid waste, hazardous waste, garbage, sludge incineration rotary kiln by calcined materials. It is widely used in building materials, metallurgy, chemical industry, environmental protection and other fields.

Introduction of Rotary Kiln

Cement rotary kilns are the most widely used for calcining cement clinker, which is divided into two categories of dry and wet. Lime rotary kiln (also known as active lime kiln) is used to roast the active lime and dolomite for iron and steel plants and ferroalloy plants, refractory plants used to roast high bauxite and vanadium clays. Metallurgical rotary kilns are mainly used in the iron and steel metallurgical industry for the magnetization roasting of depleted iron ore, and chromium, nickel, iron, lithium and other non-ferrous metal ore roasting; chemical rotary kilns are used for firing minerals such as aluminum hydroxide, chromium ore and chromium powder, as well as oil sands refining, coal to oil and coal clean refining. Application of rotary kilns as pyrolysis furnaces for solid waste and critical waste in the environmental protection industry for the co-disposal of sludge and waste.

Technical note

The rotary kiln calcining system produced by “Pengfei” is equipped with technological innovation, in which advanced hydraulic thrust roller device, high precision metering piston pump, high-precision speed control valve and contact graphite block sealing device and other domestic advanced technology are adopted. In order to improve the degree of automation, the kiln head using industrial television to see the fire, process simulation fluorescent screen, calcinations zone with the use of infrared scanner to directly reflect the burning situation of calcining zone on the computer, and the use of these new technologies is intuitive, easy to operate, reliable use. The thermal system was stabilized and the operation rate of the equipment is improved, with a 10% increase in operation rate, a 5-10% increase in production and a 15% reduction in heat consumption compared to the same specification equipment.

Process Specification

The rotary kiln is also used to calcine clay, limestone and slag drying, etc., in the production of refractory materials, the use of rotary kiln calcination of raw materials, so that its size stability, strength increases, and then processed into shape. In non-ferrous and ferrous metallurgy, iron, aluminum, copper, zinc, tin, nickel, tungsten, chromium, files and other metals are sintered and roasted in rotary kilns as smelting equipment for ores, concentrates, intermediates, etc. For example, it is used in aluminum production to roast aluminum hydroxide into alumina; it is used in ironmaking to produce pellets for blast furnace ironmaking; it is used in foreign “SL/RN method”, “Krupp method” for direct reduction of iron ore; it is used in chlorinated volatile roasting method to extract tin and lead. The ore is magnetized and roasted in a rotary kiln to change the ore’s original weak magnetism to strong magnetism to facilitate the magnetic separation. In the chemical industry, rotary kilns are used to produce soda, calcine phosphate fertilizer, barium sulfide, etc. It has the advantages of low energy consumption, low electricity consumption and the utilization of medium and low grade phosphate ore, and has been strongly promoted. In terms of environmental protection, use cement kilns to incinerate hazardous waste and garbage, make waste emissions harmless, use waste as fuel, save coal dust and achieve resource application of waste.

Technical

Specification (m)			φ2.8/2.5×44	φ3×48	φ3.2×50	φ3.3×50
Capacity (ton/day)			300	600-700	1000	1200
Slope of kiln shell (%)			3.5	3.5	3.5	4
No. of supports			3	3	3	3
Type of thrust roller			Mechanical	Mechanical or Hydraulic	Hydraulic	Hydraulic
Rotating speed of kiln body		Main drive (r/min)	0.445-2.22	0.676-3.38	0.36-3.57	0.36-3.57
Rotating speed of kiln body		Auxiliary drive (r/min)	4.75	9.36	6.5	5.61
Main drive	Electric motor	Model	ZSN4-225-21	Z2-101	ZSN4-280-191B	ZSN4-280-191B
		Rated power (kw)	55	100	160	160
		Speed regulation range (r/min)	～1000	～1500	1500	1500
		Rated voltage (V)	440	220	440	440
	Reducer	Model	ZS145-1-1	ZS145-1-1	ZSY-450-40-V	ZSY450-40
	Reducer	Total ratio	49-63	50	40	40
Auxiliary drive	Electric motor	Model	Y122M-4	Y160M-6	Y160M-4B	Y160M-4
		Rated power (kw)	4	7.5	15	11
		Speed regulation range (r/min)	1440	970	1460	1460
		Rated voltage (V)	380	380	380	380
	Reducer	Model	ZL35-16	ZL35-7-1	ZSY160-31.5-‖	ZSY355-31.5
	Reducer	Total ratio	40.44	14	31.5	31.5
Total weight (excluding refractory brick) (ton)			177	213	280.6	317

φ3.5×54	φ4×60	φ4.3×64	φ4.8×74	φ5.0×74	φ5.6×87	φ6.0×95
1500-1800	2500	3500	5000	6000	8000	10000
4	4	4	4	4	4	4
3	3	3	3	3	3	3
Hydraulic	Hydraulic	Hydraulic	Hydraulic	Hydraulic	Hydraulic	Hydraulic
0.39-3.9	0.41-4.07	0.4-4.0	0.35-4	0.35-4	Max4.23	Max5
7.66	8.2	7.93	8.52	7.58	8.7	9.2
ZSN4-315-092	ZSN4-355-092	ZSN4-355-12	ZSN4-450-092Lp44	ZSN4-450-092	ZSN4-450-12	ZSN4-500-092
220	315	400	630	710	800	950×2
1000	1000	100-1000	1500	87.5～1000	100～1000	100～1000
440	440	440	660	600	600	600
NZS995-28VIBL	YNS1110-22.4VBR	YNS1400-3105VIBL	JH710C-SW305-40	JH280C-45	JH900C-SW305-25	JH900C-SW305-28
28	22.4	31.5	42.226	28	23.901	26.646
Y200L1-6	Y180L-4	Y200L-4	Y225M-4 lp44	Y250M-4	Y280M-4	Y315M1-4
18.5	22	30	55	55	90	132
970	1470	1470	1480	1480	1480	1490
380	380	380	380	380	380	380
ZSY355	YNS440-45‖R	YNS497-45ZC	JH220C-SW302-28	JH280C-45	ZSY400-35.5-︱	ZSY450-35.5-︱
45	45	45	28	45	35.795	35.795
341	434	562	854	885	1201	1580