A kind of non-burning and non-steaming ceramsite of track shield dregs and its preparation method

A technology for shield and slag is applied in the field of rail shield slag-free burning and steam-free ceramsite and its preparation, which can solve the problems of high cost, cumbersome ceramsite process, high energy consumption, etc. simple effect

Inactive Publication Date: 2016-08-31
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to provide a non-burning and non-steaming ceramsite from rail shield dregs, so as to overcome the cumbersome process, high energy consumption, high cost and environmental protection And other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh the following components in parts by weight: 75 parts of track shield muck, 3 parts of cement, 3 parts of quicklime, 3 parts of desulfurized gypsum, 5 parts of fly ash, 5 parts of water glass, 3 parts of sodium sulfate, and 30 parts of water share. The specific steps of the preparation method of the non-burning and non-steaming ceramsite for track shield dregs include: (1) Ingredients: weigh shield dregs, cement, quicklime, desulfurized gypsum, and fly ash according to the formula ratio, and mix them evenly to obtain solid powder (2) into a ball: dissolve the water glass and sodium sulfate of the formula ratio in the water of the formula ratio, and after dissolving completely, adopt the spray mode to pour the solid powder of the step (1) into all the solutions prepared in 1min (3) Curing: put the balled ceramsite into fresh water at room temperature for 20 hours, take it out, and then put it in a room temperature and humid environment for 22 days to get the track ...

Embodiment 2

[0027] Weigh the following components in parts by weight: 100 parts of track shield muck, 5 parts of cement, 5 parts of quicklime, 5 parts of desulfurized gypsum, 10 parts of fly ash, 10 parts of water glass, 5 parts of sodium sulfate, and 50 parts of water share. The specific steps of the preparation method of the non-burning and non-steaming ceramsite for track shield dregs include: (1) Ingredients: weigh shield dregs, cement, quicklime, desulfurized gypsum, and fly ash according to the formula ratio, and mix them evenly to obtain solid powder (2) into a ball: dissolve the water glass and sodium sulfate of the formula ratio in the water of the formula ratio, and after dissolving completely, adopt the spraying method to pour the solid powder of the step (1) into the solution prepared in 5 minutes (3) Curing: put the balled ceramsite into fresh water at room temperature for 28 hours, take it out, and then place it in a room temperature and humid environment for 32 days to get ...

Embodiment 3

[0029] Weigh the following components in parts by weight: 87.5 parts of track shield muck, 4 parts of cement, 4 parts of quicklime, 4 parts of desulfurized gypsum, 7.5 parts of fly ash, 7.5 parts of water glass, 4 parts of sodium sulfate, and 40 parts of water share. The specific steps of the preparation method of the non-burning and non-steaming ceramsite for track shield dregs include: (1) Ingredients: weigh shield dregs, cement, quicklime, desulfurized gypsum, and fly ash according to the formula ratio, and mix them evenly to obtain solid powder (2) into a ball: dissolve the water glass and sodium sulfate of the formula ratio in the water of the formula ratio, and after dissolving completely, adopt the spraying method to pour the solid powder of the step (1) into all the prepared solutions within 3 minutes (3) Curing: put the balled ceramsite into fresh water at room temperature for 24 hours, take it out, and then place it in a room temperature and humid environment for 27 ...

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Abstract

The invention relates to a rail shield muck unburned and non-autoclaved ceramsite and a preparation method thereof. The rail shield muck unburned and non-autoclaved ceramsite comprises the following raw materials in parts by weight: 75-100 parts of rail shield muck, 3-5 parts of cement, 3-5 parts of quick lime, 3-5 parts of desulfurization gypsum, 5-10 parts of coal ash, 5-10 parts of water glass, 3-5 parts of sodium sulfate and 30-50 parts of water. The preparation method comprises the following steps: uniformly mixing the solid components; adding water to prepare the ceramsite; naturally maintaining at room temperature to obtain the rail shield muck unburned and non-autoclaved ceramsite. According to the rail shield muck unburned and non-autoclaved ceramsite and the preparation method thereof, the earlier-stage treatment of the shield muck is simple, the muck consumption is high, the preparation process is simple, high-temperature sintering is not required and the industrial waste such as coal ash and desulfurization gypsum can be digested; by adopting an unburned and non-autoclaved process, the preparation method has the advantages of being low in cost, energy-saving, low in carbon and environment-friendly when being compared with the sintering-method based ceramsite preparation process.

Description

technical field [0001] The invention relates to the utilization of solid waste, in particular to a non-burning and non-steaming ceramsite for track shield dregs and a preparation method thereof. Background technique [0002] In view of the hazards to urban ecology such as "occupation of cultivated land, affecting city appearance, polluting water sources, blocking rivers, and raising sand and dust" faced by a large amount of shield dregs and mud generated during the construction of rail transit projects, the muck resources of rail transit projects are developed. Optimal utilization is an important way to reduce the pressure on the urban environment and save resources. At present, the mature technology and products of resource utilization shield muck mainly include building materials such as sintered bricks and ceramsite, but the sintering process is complicated and the energy consumption is high; in addition, with the full start of the rail transit project, a large number of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26C04B18/30C04B18/16
CPCY02W30/91
Inventor 张峰君刘瑾谢发之丁益
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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