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A kind of using solid waste to prepare foam ceramics and method thereof

A foamed ceramic and foaming agent technology, applied in the field of foamed ceramics, can solve the problems of complex procedures, high equipment requirements, and high reaction temperature, and achieve the effects of good controllability, low firing temperature and short cycle.

Inactive Publication Date: 2014-10-01
武汉中理环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"This invention has high requirements for equipment, complex process, and high reaction temperature (1280°C~1450°C)

Method used

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  • A kind of using solid waste to prepare foam ceramics and method thereof
  • A kind of using solid waste to prepare foam ceramics and method thereof
  • A kind of using solid waste to prepare foam ceramics and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) The main composition of foam ceramics is: coal gangue 35%, phosphorus tailings 27%, feldspar 23.5%, yellow sand 13%, foaming agent 1.5%, all are mass percent; Described foaming agent is silicon carbide, carbonic acid A mixture of calcium and iron oxide, the mass percentage is: silicon carbide 30%, calcium carbonate 40%, iron oxide 30%;

[0033] 2) After the raw materials are mixed, add 50% water to the total mass of the raw materials, ball mill and mix in a light ball mill for 18 hours to obtain a uniformly mixed slurry, and dry the slurry in a blast drying oven at 110°C to obtain a powder Then add 6% of the weight of the powder into the water to refine the mud to obtain a uniformly mixed raw meal; the raw meal is pressed into a powder tablet press with a molding pressure of 2MPa, and then placed in a blast drying oven at 80°C Dry for 18 hours to obtain a green body; place the green body in a sintering furnace, raise the temperature from room temperature to 1130°C at...

Embodiment 2

[0036] 1) The main components of foam ceramics are: 20% coal gangue, 30% phosphorus tailings, 32% feldspar, 17% yellow sand, and 1% foaming agent, all in mass percentage; the foaming agent is silicon carbide, carbonic acid A mixture of calcium and iron oxide, the mass percentage is: silicon carbide 30%, calcium carbonate 30%, iron oxide 40%;

[0037] 2) After the raw materials are mixed, add 50% water to the total mass of the raw materials, ball mill and mix in a light ball mill for 15 hours to obtain a uniformly mixed slurry, and dry the slurry in a blast drying oven at 110°C to obtain a powder Then add 5.5% of the weight of the powder into the water refining mud to obtain a uniformly mixed raw meal; the raw meal is pressed in a powder tablet press with a molding pressure of 1 MPa, and then placed in a blast drying oven at 80 ° C Dry for 14 hours to obtain a green body; place the green body in a sintering furnace, raise the temperature from room temperature to 1080°C at a con...

Embodiment 3

[0040] 1) The main composition of foam ceramics is: coal gangue 29%, phosphorus tailings 20%, feldspar 30%, yellow sand 20%, foaming agent 1%, all are mass percent; Described foaming agent is silicon carbide, carbonic acid A mixture of calcium and iron oxide, the mass percentage is: silicon carbide 40%, calcium carbonate 35%, iron oxide 25%;

[0041]2) After the raw materials are mixed, add 50% water to the total mass of the raw materials, ball mill and mix in a light ball mill for 17 hours to obtain a uniformly mixed slurry, and dry the slurry in a blast drying oven at 110°C to obtain a powder Then add 7% of the weight of the powder into the water refining mud to obtain a uniformly mixed raw meal; the raw meal is pressed into a powder tablet press with a molding pressure of 3MPa, and then placed in a blast drying oven at 80 ° C Dry for 15 hours to obtain a green body; place the green body in a sintering furnace, raise the temperature from room temperature to 1120°C at a const...

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Abstract

The invention relates to foamed ceramic prepared with solid waste and a preparation method of foamed ceramic. The foamed ceramic comprises the following components by weight percent: 20-50 percent of coal gangue, 20-40 percent of phosphate tailing, 18-32 percent of feldspar, 10-20 percent of yellow sand and 1-2 percent of foaming agent. The preparation method of the foamed ceramic comprises the steps of crude material preparation, body shaping and sintering. The invention has the important significances of efficient utilization of solid waste such as the coal gangue, the phosphate tailing and the like, reduction of pollution of the environment, ameliorating natural environment, cheap raw material utilization and reduction of production cost, and the prepared foamed ceramic has the advantages of higher intensity, low density, and lower sintering temperature and heat conductivity.

Description

technical field [0001] The invention relates to the field of building ceramic materials, in particular to foam ceramics prepared from solid waste and a method thereof. Background technique [0002] Coal gangue is solid waste discharged during the coal mining process and coal washing process. It is a black-gray rock with low carbon content and harder than coal that is associated with coal seams during the coal formation process; coal gangue is carbonaceous , A mixture of muddy and sandy shales, with low calorific value, 20% to 30% carbon, and some contain humic acid. The accumulated coal gangue in China has reached more than 1 billion tons, and 100 million tons of coal gangue will be discharged every year. A large number of piles of coal gangue not only occupy the land, affect the ecological environment, but also collapse in the rainy season, silt the river and cause disasters; gangue leaching water will pollute the surrounding soil and groundwater, and coal gangue contains ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/06C04B35/14C04B35/622
Inventor 吉晓莉翟成成
Owner 武汉中理环保科技有限公司
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