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The Main Causes and Measures for the Skinning and Blocking in the Precalciner System of Cement Kiln

Time: 2023-10-13 17:11:58

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In the production process of using the production technology outside the kiln, s

In the production process of using the production technology outside the kiln, skinning, storing up of feed materials and blocking in the precalciner system are still the common problems in the production process of precalciner kiln.

In the precalciner system, when heating the raw materials, due to the thermal and physical effects, it causes the materials to skin and store up in some area of the system, and thereby causes the material flow to stagnate.

 

Main reasons of skinning, storing up of feed materials and blocking

1. Blocking caused by skinning. It mainly includes skinning at high temperature and skinning by material backflow

2. Storing up of feed materials due to air leakage

3. Storing up of feed materials caused by mechanical failure

4. The storing up of feed materials caused by improper operation mainly includes the following reasons:

  1. Untimely material feeding
  2. Insynchronized material amount and kiln speed
  3. Too large or too small exhaust air volume
  4. Uneven distribution of furnace air volume
  5. Improper air discharge when starting and shutting the kiln
  6. Uncoordinated operation of the kiln

Measures and treatments to prevent skinning, storing up of feed materials and blocking

1. Comprehensive inspection before starting the kiln

2. Proper sealing

3. Standardized operation and management


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