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Southeast Side Of New No. 310 National Road And Xingmi Road Intersection, Xingyang, Zhengzhou, Henan, China (Mainland)
1.Introduction of vertical preheater
Vertical preheater system includes an integral “live” stone storage bin. Stone flows by gravity from the bin to the preheater modules through vertical chutes, (which also provide an air seal between the process and ambient). Kiln exhaust gases enter the preheater at 1010–1095 °C, to preheat limestone to 800℃ or more.The limestone is pushed out by hydraulic discharge mechanism and get into the rotary kiln through transfer slide for roasting and decomposition. Comparing with the traditional rotary kiln with the same model, the production capacity increases by 30%, heat consumption lowers by 40%.
As these hot process gases pass through the preheater,heat is transferred to the bed of material within. This causes the release of 25–35% of the CO2 from the limestone within the preheater.The partially calcined mateirals is discharged from the preheater by controlled, sequential stroking of hydraulic plungers at its perimeter. The material then passes through the transfer chute and enters into the rotary kiln. Exhaust gases leaving the preheater have an average temperature of 230–260 °C and are typically filtered in a baghouse type dust collector, before being discharged to the atmosphere through a separate, free-standing exhaust stack.
2.The feature of vertical preheater as follow:
1.Save energy about 40% than rotary kiln without preheater
2.Increase the output more than 30% compare with the same kiln without preheater
3.The dust discharge can be reach to 50mg/m3.
4.Shorten the kiln length,reduce the area of construction.
3.The main part of vertical preheater include:
1.The upper feed silo
2.Transfer chute
3.Preheater body
4.Hydraulic pushing system
5.Discharge outlet connect with rotary kiln.
6.The framework
Henan Zhengzhou Mining Machinery Co., Ltd. was founded in 1956,it is located in Zhengzhou city which is the capital of Henan Province. After more than half a century of development, Henan Zhengzhou Mining Machinery Co., Ltd has developed to an area of 70000 square meters, plant construction area of 40000 square meters with six modern workshops, two heavy machinery workshops, one Municipal Technology Center and more than 260 sets of machining, assembling, welding and other equipments. Its fixed asset value has exceeded 100 million RMB. Henan Zhengzhou Mining Machinery Co., Ltd has become an integrated modern enterprise with scientific research, design, development, manufacturing, sales, installation, commissioning and training services.
The main products of company include: ball mill, rotary kiln, preheater, cooler, crusher, bucket elevator, dust collector,conveyor and other equipments relate to metallurgy, cement, lime, mineral processing, refractory, chemical industry. The products of Henan Zhengzhou Mining Machinery Co., Ltd have been sold to every province of China and exported to Russia, Korea, Vietnam, Malaysia, Nepal, Bangladesh, Mexico, Armenia, Africa, South America and other countries and regions. At present, Henan Zhengzhou Mining Machinery Co., Ltd is the largest equipment supplier for magnesium production and has been on the leading position for 25 years in the market.
Henan Zhengzhou Mining Machinery Co., Ltd has modern and mature administration system and perfect quality control system. It has got the ISO9001 International Quality System Certification, Environmental Protection Certification and other.
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