A system and method for preparing activated coal gangue powder using a tunnel kiln

By designing a coal gangue activation system in a tunnel kiln, and combining activation admixtures with mechanical activation, the problem of poor coal gangue activation performance was solved, achieving efficient activation and resource recycling.

CN116748286BActive Publication Date: 2026-05-29XIAN KAISHENG BUILDING MATERIALS ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN KAISHENG BUILDING MATERIALS ENG CO LTD
Filing Date
2023-06-15
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing coal gangue activation processes suffer from problems such as high calcination temperature and insufficient holding time, resulting in poor activation performance and difficulty in achieving efficient utilization in tunnel kiln sintered brick production lines.

Method used

A system for preparing active powder from activated coal gangue using a tunnel kiln is designed, including raw material processing, homogenization, molding, drying, calcination, and powdering units. The activity of the active powder is improved by adding an activating admixture and controlling the calcination temperature and holding time, combined with mechanical activation.

Benefits of technology

This method achieves efficient activation of coal gangue, improves the activation rate, reduces preparation costs, and eliminates the need for additional chemical reagents, thus realizing resource recycling and environmental friendliness.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a system and a method for preparing active powder by activating coal gangue in a tunnel kiln. The system comprises sequentially matched raw material processing unit, homogenizing unit, forming unit, drying unit, calcining unit, powder preparation unit and running unit. The method comprises: 1. raw material processing; 2. homogenizing processing; 3. forming processing; 4. drying processing; 5. calcining processing; 6. powder preparation processing. In the preparation system, the activation admixture and the coal gangue are converted into powder by setting the units, the activity of the active powder is improved by the calcination activation and mechanical activation in the calcining unit and the powder preparation unit, and the coal gangue is activated to prepare the active powder. In the method, the coal gangue is used as the raw material and the activation admixture is added, the heat activation temperature of the coal gangue is effectively reduced, the activity of the coal gangue is excited, the activity of the coal gangue is further excited by combining the mechanical activation, and the activation rate of the coal gangue and the utilization amount of the coal gangue are improved.
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