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Method for preparing ultra-light high-strength ceramic aggregate from dredged bottom mud and nearshore high-sand content mud

A technology for dredging bottom mud and high-sand mud, applied in the direction of climate sustainability, sustainable waste treatment, solid waste management, etc., can solve the problems of large proportion and low strength of ceramsite aggregate, and achieve adjustable particle size and high strength , to overcome the effect of low intensity

Active Publication Date: 2011-04-27
戴勇鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method uses sludge to prepare ceramsite lightweight aggregate, because only sludge and fly ash are used, the prepared ceramsite aggregate has a large proportion and low strength.

Method used

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  • Method for preparing ultra-light high-strength ceramic aggregate from dredged bottom mud and nearshore high-sand content mud
  • Method for preparing ultra-light high-strength ceramic aggregate from dredged bottom mud and nearshore high-sand content mud

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Take the dredged bottom mud, high-sand mud near the shore and surrounding aquatic plant straw (such as cattail) from lakes, rivers or oceans; dry the dredged bottom mud and high-sand mud near the shore naturally until the water content reaches 10%. Drying and crushing of aquatic plant stalks;

[0016] (2) Take the dried dredged sediment and broken aquatic plant stalks at a ratio of 5:1 by volume, put them together in a mixer and mix them evenly, and use an extrusion-type ball forming machine to granulate, and then the extruded raw The material ball is used as the cue ball (no need to add water during the extrusion granulation process), and placed in the pan granulator, and at the same time, add the dried nearshore high sand mud in the pan granulator (spray atomized water at the same time, add The amount of water is 5% of the mass ratio of the high-sand mud near the shore), and they are rolled together to make finished raw meal balls, and the volume of the high-sand ...

Embodiment 2

[0020] (1) Take the dredged bottom mud of lakes, rivers or oceans, the high-sand mud near the shore and the surrounding aquatic plant stalks (such as cattails); naturally dry the dredged bottom mud and the high-sand mud near the shore until the water content reaches 5%. Drying and crushing of aquatic plant stalks;

[0021] (2) Take the dried dredged sediment and the broken aquatic plant stalks according to the volume ratio of 9.2:0.8, put them into the mixer together and mix them evenly, and use the extruding ball machine to granulate, and then the extruded raw The material ball is used as the cue ball (no need to add water during the extrusion granulation process), and placed in the pan granulator, and at the same time, add the dried nearshore high sand mud in the pan granulator (spray atomized water at the same time, add The amount of water is 7% of the mass ratio of the high-sand mud near the shore), and they are rolled together to make finished raw meal balls, and the volu...

Embodiment 3

[0025] (1) Take the dredged bottom mud of lakes, rivers or oceans, near-shore high-sand mud and surrounding aquatic plant stalks (such as reeds); naturally dry the dredged bottom mud and near-shore high-sand mud to a water content of 20%. Drying and crushing of aquatic plant stalks;

[0026] (2) Take the dried dredged sediment and the broken aquatic plant stalks according to the volume ratio of 12:0.2, put them into the mixer and mix them evenly, and use the extruding ball machine to granulate, and then the extruded raw The material ball is used as the cue ball (no need to add water in the extrusion granulation process), placed in the pan granulator, and at the same time, the dried near-shore high sand mud is added to the pan granulator, and rolled together to form the finished raw material ball (At the same time, atomized water is sprayed, and the amount of water added is 10% of the mass ratio of the near-shore high-sand mud), and the volume of the near-shore high-sand mud is...

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Abstract

The invention provides a method for preparing ultra-light high-strength ceramic aggregate from dredged bottom mud and nearshore high-sand content mud, which comprises the following steps: (1) uniformly mixing dried bottom mud dredged from a lake, a river or an ocean and straws of water plants according to a volume ratio of 5-12:1-0.2 to obtain fresh pellets, adding nearshore high-sand content mud to the fresh pellets used as seed pellets, and rolling into finished fresh pellets; and (2) burning the prepared finished fresh pellets at 950-1350 DEG C for 30-60 minutes, and naturally cooling to obtain the ultra-light high-strength ceramic aggregate. The invention solves the problem of mass production caused by scarce resources, and solves the problem on stacking and processing polluted bottom mud dredged from lakes and rivers. At the same time, the invention overcomes the defect of the low strength of the traditional ultra-light ceramic aggregate, and achieves the purposes of the harmless processing and the recycling of waste. Besides, the prepared ultra-light high-strength ceramic aggregate has the characteristics of low specific gravity, adjustable particle size, high strength and high stability.

Description

technical field [0001] The invention relates to a method for preparing ultra-light and high-strength ceramic aggregate by using dredged bottom mud in lakes, rivers or oceans and high-sand mud near the shore of lakes, rivers or oceans, and belongs to the technical field of ultra-light and high-strength ceramic aggregate preparation . Background technique [0002] Ultra-light aggregate is a material widely used in ultra-light concrete, ultra-light concrete blocks, gardens, sewage cultivation, etc. The finished product after deep processing with ultra-light aggregate as raw material has light weight, fire resistance, heat insulation , sound insulation, earthquake resistance, water retention and other characteristics, more and more attention has been paid by the society. Traditional ultra-light aggregates mainly rely on natural raw materials such as clay, shale, sandstone, and vermiculite for production, which not only restricts the mass production of ultra-light aggregates, bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/30
CPCY02W30/91
Inventor 张大磊齐元峰张成禄何圣兵
Owner 戴勇鹏
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