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Mechanical fossil ash kiln manufacturer: energy-saving lime kiln technology and characteristics

Mechanical fossil ash kiln manufacturer: energy-saving lime kiln technology and characteristics

  • Categories:Industry News
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  • Time of issue:2023-01-18 10:30
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(Summary description)Mechanical fossil ash kiln manufacturer: energy-saving lime kiln technology and characteristics. Energy saving lime kiln is a type of kiln used for calcining limestone to produce quicklime. It is a new type of equipment that uses natural gas or coal gas as raw materials and air as auxiliary gas to heat clinker to produce qualified lime

Mechanical fossil ash kiln manufacturer: energy-saving lime kiln technology and characteristics

(Summary description)Mechanical fossil ash kiln manufacturer: energy-saving lime kiln technology and characteristics. Energy saving lime kiln is a type of kiln used for calcining limestone to produce quicklime. It is a new type of equipment that uses natural gas or coal gas as raw materials and air as auxiliary gas to heat clinker to produce qualified lime

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2023-01-18 10:30
  • Views:
Information

Mechanical fossil ash kiln manufacturer: energy-saving lime kiln technology and characteristics
Energy saving lime kiln is a type of kiln used for calcining limestone to produce quicklime. It is a new type of equipment that uses natural gas or coal gas as raw materials and air as auxiliary gas to heat clinker and produce qualified lime.

机械化石灰窑

Mechanical Fossil Ash Kiln Manufacturer: Process Flow
Limestone and fuel are placed in a lime kiln (such as adding gas fuel through pipelines, burners, etc.), preheated, decomposed at 850 ° C, calcined at 1200 ° C, cooled, and discharged from the kiln, completing the production of quicklime products. Due to the presence of calcium oxide in quicklime, a series of processes are required to discharge the oxide from the lime kiln. Different kiln types have different preheating and calcination conditions, as well as cooling and ash unloading methods. At present, China adopts a rotary energy-saving lime kiln, mainly used for clinker calcination. However, there are also a few processes with identical principles: the quality of raw materials is excellent, while the quality of lime is excellent; This type of fuel has a higher calorific value and a smaller usage; The particle size of limestone is proportional to the calcination time; The more limestone powder is added, the greater the clinker output. The activity of quicklime is inversely proportional to its calcination time and temperature.
The energy-saving lime kiln mainly consists of kiln body, feeding device, distribution device, combustion device, ash unloading device, electrical appliances, instrument control device, dust removal device, etc. It is an energy-saving lime kiln with advantages such as low investment, fast efficiency, low energy consumption, large output, good quality, and simple operation. Different types of lime kilns differ in terms of structural form, calcination form, and other aspects. The process flow is basically the same, but the value of equipment varies greatly. At present, many cement plants in China have adopted rotary lime kilns. Of course, the usage effect is also very different. This article introduces a new energy-saving rotary lime kiln.
The equipment system of the lime shaft kiln, with materials from top to bottom and combustion air from bottom to top. The contact time between the material and the air layer is short, the heat capacity is small, and the heat dissipation is fast. The heat carried by high-temperature materials preheats the combustion air. Low temperature materials are discharged from the kiln with residual heat. The process is reasonable, the heat loss is small, and the discharge temperature can be controlled within the range of 60 ambient temperature. Due to the recovery and utilization of waste heat from flue gas, thermal efficiency has been improved, exhaust emissions have been reduced, and costs have been reduced. Therefore, the principle of thermodynamics has a certain degree of rationality, basically achieving the goal of cold in and cold out.
According to the mechanical fossil ash kiln manufacturer, because the position of the burner in the vertical kiln for burning lime is fixed and the position of the calcination zone is fixed, the temperature distribution inside the kiln is uniform, and there is no deviation from burning in the coal-fired vertical kiln. At the same time, the characteristics of gas kilns are large hot gas flow rate, easy temperature control, high product quality, low requirements for gas selection, and convenient operation. Therefore, many enterprises use this form of coal vertical kiln, but often due to insufficient fuel combustion, it leads to problems such as high energy consumption and low production. Therefore, in places where there is a large amount of residual gas (which can also be artificially generated), gas fired kilns are chosen.

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