It has the characteristics of high heat exchange rate and high automation level, and is mainly used for preheatingthermal stability of dolomite. After the vertical preheater is used with therotary kiln, the waste heat of the high temperature flue gas at the kiln can be fully utilized, which can save energy and reduce consumption, and belongs toenergy-saving and environment-friendly products.
The vertical preheater is a verticalpreheating device for preheating raw materials developed by engineers andtechnicians of Henan Zhengzhou Mining Machinery Co., Ltd. based on theintroduction and absorption of foreign advanced technology, combined with thecalcination characteristics of dolomite. It has the characteristics of highheat exchange rate and high automation level, and is mainly used for preheatingthermal stability of dolomite. After the vertical preheater is used with therotary kiln, the waste heat of the high temperature flue gas at the kiln can befully utilized, which can save energy and reduce consumption, and belongs toenergy-saving and environment-friendly products.
The 20-50mm dolomite is sent by the beltconveyor to the top silo of the vertical preheater, and passes through theblank chute to the vertical preheater under the action of gravity. The hightemperature gas from the rotary kiln enters the vertical preheating through thetransfer chute. Heat exchange with dolomite. The material is preheated to above800 °C, and the heat exchanged gas enters the dust collector through theexhaust pipe to remove dust. The preheated dolomite is pushed by the hydraulicpush rod to the discharge port through the transfer chute to the rotary kiln.
The vertical preheater has a simplestructure and is mainly composed of an upper feeding system, a ceiling device,a preheater body, a pushing system, a hydraulic system and the like. Withadvanced processing capabilities and technical level, our company's verticalpreheaters have their unique advantages:
1. Environmental protection and energysaving. After the vertical preheater is installed in the rotary kiln, thethermal efficiency is increased by 30%, and the dust content of the flue gas isreduced to about 30mg/Nm3;
2. After adopting the vertical preheater,the length of the rotary kiln can be shortened, the floor space and the surfaceof the kiln body can be reduced, and the production capacity can be increasedby more than 20%;
3, low operating costs, because the pusherand the main parts of the body are heat-resistant steel, can work for a longtime at 1000 ~ 1100 °C high temperature, with a long service life;
4. The refractory brick lining structurehas novel design and good sealing performance, which can ensure uniformpreheating of materials and improve the quality of finished products.