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Method of preparing light ceramisite by use of muck

A lightweight ceramsite and slag technology, applied in clay products, applications, household appliances, etc., can solve the problems of occupying land resources, high production process, polluting the environment, etc., to reduce sintering temperature, improve strength, and increase light weight. sexual effect

Inactive Publication Date: 2017-08-08
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention firstly solves the problems of industrial and agricultural solid waste occupying land resources and polluting the environment, and secondly solves the problems of high energy consumption and high pollution in the traditional ceramsite production process to prepare high-quality slag ceramsite

Method used

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  • Method of preparing light ceramisite by use of muck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 60 parts by weight of construction site waste slag, 20 parts by weight of carbonized rice husk ash, and 20 parts by weight of fly ash, mix and ball mill until the particle size is less than 100 microns to obtain batch materials, and put the ingredients into a ball-forming disc to granulate into balls and atomize Spray 20 parts by weight of 5% sodium bicarbonate solution to prepare a spherical material ball of 5-20mm, put the material ball into a container and microwave it to heat up to 1200°C, keep it warm for 10 minutes, and take it out after naturally cooling to room temperature.

Embodiment 2

[0029] Weigh 70 parts by weight of construction site waste slag, 10 parts by weight of carbonized rice husk ash, and 20 parts by weight of fly ash, mix and ball mill until the particle size is less than 100 microns to obtain batch materials, put the ingredients into a ball-forming disc, granulate into balls and atomize Spray 18 parts by weight of 3% sodium bicarbonate solution to prepare a spherical material ball of 5-20mm, put the material ball into a container and microwave to heat up to 800°C, keep it warm for 30 minutes, and take it out after naturally cooling to room temperature.

Embodiment 3

[0031] Weigh 80 parts by weight of construction site waste slag, 10 parts by weight of carbonized rice husk ash, and 10 parts by weight of fly ash, mix and ball mill until the particle size is less than 100 microns to obtain batch materials, and put the ingredients into a ball-forming disc to granulate into balls and atomize Spray 10 parts by weight of 6% sodium bicarbonate solution to prepare spherical material balls of 5-20 mm in size, put the material balls into a container and microwave to heat up to 1100° C., keep warm for 15 minutes, and take out after naturally cooling to room temperature.

[0032] The performance evaluation indicators of slag ceramsite are in accordance with "GB / T17431-2010 Lightweight Aggregate and Its Test Methods", "JC487-1992 Ultralight Ceramsite and Pottery Sand".

[0033] The comparison of specific performance indicators between the lightweight slag ceramsite obtained in Examples 1-3 of the present invention and ordinary ceramsite (ie comparative ...

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Abstract

The invention relates to a method of preparing light ceramisite by use of muck. The method comprises the following steps: 1) uniformly mixing raw muck with carbonized rice hull ash and fly ash to obtain a batch; 2) putting the batch into a disc granulator and granulating into balls, atomizing and spraying in 3-6% sodium bicarbonate solution (by mass) accounting for 10-20% of the batch mass, and preparing 5-20mm spherical pellets by a stirring-rolling-granulating method; 3) putting the pellets into a container and sintering in a heating cavity of a microwave sintering furnace, wherein the sintering conditions are that the microwave frequency is 2.45GHz, the microwave sintering temperature is 800-1,200 DEG C, and the heat preserving time is 10-30 minutes; 4) naturally cooling the sintered material in the microwave sintering furnace to room temperature to obtain high-quality light muck ceramisite. The method provided by the invention effectively utilizes the industrial and agricultural solid wastes to improve the ceramisite performance, also solves the problems such as high energy consumption, severe pollution and low capacity in existing ceramisite sintering process and can be used for preparing high-quality light muck ceramisite.

Description

technical field [0001] The invention relates to the technical field of ceramsite products, in particular to a method for preparing lightweight ceramsite by using slag. Background technique [0002] Ceramsite is a kind of lightweight aggregate with excellent properties such as thermal insulation, heat insulation, and frost resistance. It is widely used in the fields of building materials, gardening, food and beverage, refractory insulation materials, etc.; The generated spoil is piled up on the construction site, occupying a large amount of land resources, and is easy to cause environmental pollution. At present, most of the muck is used for landfill, which will increase the cost during transportation; rice husk is farmland waste, and the general treatment method Incineration on site causes serious environmental pollution; sintering slag ceramsite by using microwave sintering technology fully embodies the characteristics of energy saving and environmental protection of microw...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B33/132C04B33/135
CPCC04B33/132C04B33/1328C04B33/1352C04B33/1355C04B38/009C04B2235/96C04B38/02Y02P40/60
Inventor 张亚梅潘东孙正明张培根
Owner SOUTHEAST UNIV
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