Use of detoxinic chromium slag as paving material

A technology of chromium slag and application is applied in the field of detoxifying chromium slag as paving material, which can solve the problem of high cost and achieve the effect of good wear resistance

Active Publication Date: 2006-06-28
SICHUAN YINHE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Higher cost if processed with natural stone

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Add 1 ton of detoxified chromium slag with a fineness of about 10 meshes to 90 tons of asphalt pavement surface layer materials that have been mixed with coarse aggregate for road pavement.

[0022] 2. After testing, the various indicators of the road surface are as follows: crushing value 7.6%, Los Angeles abrasion 10%, apparent density 2.88t / m 3 , water absorption 0.79ωX, and asphalt adhesion level 5. Fully compliant with asphalt pavement requirements.

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PUM

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Abstract

The invention relates to use detoxification chrome cinder as paving material. While using, the detoxification chrome and emulsified asphalt are mixed according to certain proportion to use as paving material. The detoxification excels natural material on many functions. The invention can effectively use í‹the three-wasteíŒ resources, and save a lot of natural materials.

Description

[0001] Field [0002] The invention relates to the use of detoxified chromium slag as road paving material, especially after being mixed with emulsified asphalt as road paving material. Background technique [0003] Chromium slag is a chemical solid waste produced during the production of chromium salts. At present, the actual annual output of chromium salts has exceeded 160,000 tons. According to the calculation of slag discharge coefficient and chromium slag output, the annual discharge of chromium slag in my country is 350,000-420,000 tons, and 2.5 million tons of untreated chromium slag have been piled up around major cities. Because chromium slag contains toxic hexavalent chromium and water-insoluble calcium chromate, it cannot be used normally, resulting in a large amount of chromium slag piled up, while hexavalent chromium ions in the environment continue to seep into the ground, polluting soil and water sources. The piles of chromium slag have caused extreme harm to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/26
Inventor 李先荣张国庆马顺友王亭刚胡义华
Owner SICHUAN YINHE CHEM
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