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Lime powder calcination device

A lime powder and powder technology, applied in the field of rotary kiln, can solve the problems of unqualified quality, insufficient preheating, serious raw burning, etc., and achieve the effects of stable product quality, full use of heat, and sufficient pre-decomposition

Inactive Publication Date: 2012-11-14
XINXING HEBEI ENG & RES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This production method generally has many disadvantages: 1) Insufficient preheating, high exhaust gas temperature and high energy consumption
2) The calcination is not complete, and the burning is serious
Poor activity, unqualified quality
3) Incomplete cooling, high temperature of finished products, poor economic benefits, unable to produce qualified lime, and no practical application

Method used

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  • Lime powder calcination device
  • Lime powder calcination device

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Experimental program
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Embodiment Construction

[0013] As shown in the drawings, the present invention includes a powder material preheater 1, a powder material rotary kiln 2, and a powder material cooler 4. The upper part of the powder preheater 1 is sealed and fixed with a powder feeding pipe 6 and an exhaust gas pipeline 7, the lower part is sealed and fixed with the left end of the powder rotary kiln 2, and the right end of the powder rotary kiln 2 is connected with the powder cooler 4. The left end is sealed and fixed, and there is a finished product discharge device 5 at the lower end of the finished product discharge port at the right end of the powder material cooler 4 . Since the powder material cooler 4 rotates continuously with the powder material rotary kiln 2, it continuously tumbles in the process of contacting with the cold air, fully cooling, and avoiding the characteristics of poor air permeability and insufficient cooling of the powder material below 3mm.

[0014] The powder preheater 1 is composed of a pl...

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Abstract

The invention relates to a lime powder calcinations device, and in particular relates to a rotary kiln for calcining dust ores such as lime stone, dolomite. The lime powder calcination device comprises a powder pre-heater, a powder rotary kiln and a powder cooler. The upper part of the powder pre-heater is sealed and fixed with a powder adding tube and a waste gas pipeline, and the lower part of the powder pre-heater is sealed and fixed with the left end of the powder rotary kiln; the right end of the powder rotary kiln is sealed and fixed with the left end of the powder cooler; and a finished product discharge device is arranged on the lower end of a finished product discharge hole on the right end of the powder cooler. The lime powder calcination device can calcine the lime stone which is less than 3mm.

Description

technical field [0001] The invention relates to lime powder calcining equipment, in particular to a rotary kiln for calcining powdery ores such as limestone and dolomite. Background technique [0002] At present, there are various forms of active lime kilns, including shaft kilns and rotary kilns. The shaft kiln calcines large grain raw materials. The particle size of the raw material is generally 40-80mm in the vertical kiln, and 20-40mm in the rotary kiln. Generally speaking, the existing calcination equipment for producing lime products can only calcine large and medium particle raw materials. [0003] For raw materials with a particle size of less than 20mm, the gap between the particles is smaller due to the smaller particle size. It is difficult for the air with heat to pass through the inside of the raw material, making it difficult for small particle raw materials to be heated by the air with heat. [0004] In the actual production process, only the surface part ...

Claims

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Application Information

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IPC IPC(8): C04B2/10
Inventor 刘继东闫炳宽李为良张缰山徐宏英
Owner XINXING HEBEI ENG & RES INC
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