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Railroad bed C group filler mainly based on calcium silicon slags and preparation method thereof

A technology of railway subgrade and silicon-calcium slag, which is applied in the field of building materials, can solve pollution and its serious problems, and achieve the effects of protecting the environment, reducing costs, and improving railway quality

Inactive Publication Date: 2018-01-05
DATANG INT HIGH ALUMINA COAL R & D CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But every ton of Al produced 2 o 3 At the same time, the main component accompanying the production of 2.2 to 2.5 tons is C 2 S calcium-calcium slag, and it contains 2 to 4.5% soluble alkali (Na 2 O), this just causes it to have very strong pollution, especially to the pollution of soil and groundwater and its seriousness, must carry out anti-seepage treatment to stockyard when a large amount of stockpiles, the processing and utilization of silicon-calcium slag have become the restriction coal -The biggest bottleneck in the development of electricity-ash-aluminum recycling industry, so how to effectively dispose of calcium-silicon slag has become an urgent problem to be solved in the high-aluminum fly ash aluminum extraction industry

Method used

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  • Railroad bed C group filler mainly based on calcium silicon slags and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]1. Prepare materials

[0033] The group C filler of the railway subgrade in this embodiment includes the following raw materials: 60 parts by weight of silicon-calcium slag, 30 parts by weight of soil, and 10 parts by weight of water.

[0034] 2. Preparation

[0035] The above raw materials were mixed and stirred evenly to prepare the railway subgrade group C filler of this embodiment.

[0036] 3. Filling

[0037] The group C filler of the railway subgrade prepared above was evenly spread on the roadbed with a paver, and pressed 6 times with a 22-ton vibratory roller at a speed of 3 km / h to complete the filling of the group C filler of the railway subgrade.

[0038] Sampling was carried out on Group C filler of the railway subgrade, and the relevant parameters were tested. The results are as follows:

[0039] 1. Boundary moisture content

[0040] Liquid limit (%): 36

[0041] Plastic limit (%): 20.3

[0042] Plastic finger: 15.7

[0043] 2. Liquid plastic limited ...

Embodiment 2

[0053] 1. Prepare materials

[0054] The railway subgrade group C filler of this embodiment includes the following raw materials: 56 parts by weight of silicon-calcium slag, 35 parts by weight of soil, 2 parts by weight of fly ash, and 7 parts by weight of water.

[0055] 2. Preparation

[0056] The above raw materials were mixed and stirred evenly to prepare the railway subgrade group C filler of this embodiment.

[0057] 3. Filling

[0058] The group C filler of the railway subgrade prepared above was evenly spread on the roadbed with a paver, and pressed 6 times with a 22-ton vibratory roller at a speed of 3 km / h to complete the filling of the group C filler of the railway subgrade.

[0059] Sampling was carried out on Group C filler of the railway subgrade, and the relevant parameters were tested. The results are as follows:

[0060] 1. Boundary moisture content

[0061] Liquid limit (%): 37.8

[0062] Plastic limit (%): 23.6

[0063] Plastic finger: 14.2

[0064] 2...

Embodiment 3

[0074] 1. Prepare materials

[0075] The railway embankment group C filler in this embodiment includes the following raw materials: 45 parts by weight of silicon-calcium slag, 40 parts by weight of soil, 4 parts by weight of desulfurized gypsum, and 11 parts by weight of water.

[0076] 2. Preparation

[0077] The above raw materials were mixed and stirred evenly to prepare the railway subgrade group C filler of this embodiment.

[0078] 3. Filling

[0079] The group C filler of the railway subgrade prepared above was evenly spread on the roadbed with a paver, and pressed 6 times with a 22-ton vibratory roller at a speed of 3 km / h to complete the filling of the group C filler of the railway subgrade.

[0080] Sampling was carried out on Group C filler of the railway subgrade, and the relevant parameters were tested. The results are as follows:

[0081] 1. Boundary moisture content

[0082] Liquid limit (%): 38.7

[0083] Plastic limit (%): 25.7

[0084] Plastic finger: 1...

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Abstract

The invention provides a railroad bed C group filler mainly based on calcium silicon slags and a preparation method thereof. The railroad bed C group filler is prepared from calcium silicon slags, soil and water. According to the railroad bed C group filler, industrial solid wastes can be adsorbed, and the cost of the railroad bed filler can be lowered.

Description

technical field [0001] The invention relates to railway packing technology, in particular to a railway subgrade C group packing mainly composed of silicon-calcium slag and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] Calcium silicate slag is a secondary solid waste produced after extracting alumina from fly ash. This process originated in the 1950s. 2 o 3 >30%) to successfully extract alumina. As my country's environmental protection policies become increasingly stringent and the crisis of shortage of high-grade bauxite resources intensifies, in recent years various places have begun to adopt the technology of extracting alumina from high-alumina fly ash. The crisis of shortage of mineral resources has positive significance for reducing fly ash environmental pollution, expanding the utilization of fly ash resources, and expanding the source of raw materials for my country's alumina industry. But ever...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B20/00C04B18/04
Inventor 杨志杰孙俊民陈杨高志军
Owner DATANG INT HIGH ALUMINA COAL R & D CENT
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