High-strength ceramsite and preparation process thereof

A preparation process and high-strength technology, applied in the field of building materials, can solve problems such as high price and weariness, and achieve the effects of improving plasticity, high refractoriness, and saving energy

Pending Publication Date: 2021-06-15
杭州奥兴筑友科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, ceramsite has risen in the construction industry, and there are many varieties, but it is nothing more than clay ceramsite, shale ceramsite, fly ash ceramsite, coal gangue ceramsite, more or less need to use natural clay, sea ceramsite Clay is used as a binder. However, with the massive development of clay mines, it has become more and more exhausted, and the price has also risen accordingly. The state has also explicitly restricted mining.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Put sand washing mud and powder with a water content of 17% into the kneader according to the mass percentage of the dry basis, add 1% bituminous coal, 3% sodium sulfate, and 1% magnesium oxide, turn on the kneader and knead for 50 minutes, and granulate into a diameter The balls are 1.8cm in size, and sent to the rotary kiln for roasting by conveyor belt after being formed into balls. The roasting temperature is 1100°C-1190°C, the tail temperature is less than 350°C, the speed of the roasting kiln is 3-4 rpm, the diameter of the sintering section is 1m, and the length is 17.5mm. m, the diameter of the preheating section is 0.8m, the length is 17.5m, the total time is 100min, and it is ready after natural cooling.

[0022] The ceramsite prepared by this example has a water absorption rate of 12.3%, a cylinder compressive strength of 1.4MPa, and a bulk density of 420kg / m 3 , sulfide and sulfate content 0.4%, boiling mass loss 2.2%, mud content and mud content 0.8%, mud c...

Embodiment 2

[0024] Put 90% of the sand washing mud and powder with a water content of 17% into the kneader according to the mass percentage of the dry basis, add 2% coal gangue, 7% glass powder, and 1% manganese oxide, start the kneader and knead for 90 minutes, and granulate Balls with a diameter of 1.8cm are sent to the rotary kiln by a conveyor belt for roasting after being formed into balls. The roasting temperature is 1100℃~1190℃, the tail temperature is less than 350℃, the rotational speed of the roasting kiln is 3~4 rpm, the diameter of the sintering section is 1m, and the length 17.5m, the diameter of the preheating section is 0.8m, the length is 17.5m, the total time is 100min, and it is ready after natural cooling.

[0025] The ceramsite prepared by this example has a water absorption rate of 12.1%, a cylinder compressive strength of 1.2MPa, and a bulk density of 340kg / m 3 , Sulfide and sulfate content, boiling mass loss 2.0%, mud content and mud content 0.8%, mud content 0.1%, ...

Embodiment 3

[0027] Put 73.5% of sand washing mud and powder with a water content of 22% into the kneader according to the mass percentage of the dry basis, add 1% carbon, 25% glass powder, and 0.5% phosphate, start the kneader and knead for 30 minutes, and granulate into a diameter The balls are 1.8cm in size, and sent to the rotary kiln for roasting by conveyor belt after being formed into balls. The roasting temperature is 1100°C-1190°C, the tail temperature is less than 350°C, the speed of the roasting kiln is 3-4 rpm, the diameter of the sintering section is 1m, and the length is 17.5mm. m, the diameter of the preheating section is 0.8m, the length is 17.5m, the total time is 100min, and it is ready after natural cooling.

[0028] The ceramsite prepared by this example has a water absorption rate of 8%, a cylinder compressive strength of 1.4MPa, and a bulk density of 650kg / m 3 , sulfide and sulfate content < 0.01%, chloride content < 0.01%, boiling mass loss 2.2%, mud content and mud ...

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Abstract

The invention discloses a high-strength ceramsite and a preparation process thereof. Wet mud powder obtained after filter pressing of mud and powder generated in the gravel aggregate processing process is directly used as a main raw material, small amounts of a pore-forming agent and a fluxing agent are added, kneading, granulation, preheating and high-temperature roasting are carried out to prepare the artificial light bone ceramsite, and the ceramsite is spherical and subsphaeroidal, is hard in skin, and fully filled with fine pores. The prepared ceramsite is high in density, high in strength, low in heat conductivity coefficient, high in refractoriness, good in chemical stability and non-toxic and harmless, the problem that aggregate processing garbage is difficult to treat can be solved, waste is turned into wealth, and good social benefits and environmental protection benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a high-strength ceramsite and a preparation process thereof. Background technique [0002] Sand washing mud and powder belong to construction solid waste. It is reported that in recent years, the total annual discharge of construction waste in my country is about 1.55 billion tons to 2.4 billion tons. The stock of construction waste has reached more than 20 billion tons. According to incomplete statistics, the construction waste generated in my country in 2017 was about 2.379 billion tons, but only 11,900 tons were used for resource utilization, and it will reach 2.6 billion tons per year by 2020, and the part that has been utilized is basically It is to screen high-quality crushed aggregate from a large amount of construction waste as part of the subgrade filling or add a small proportion to make solid bricks. From the development trend of the building mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/32C04B33/13C04B38/06
CPCC04B33/1324C04B33/1321C04B33/1328C04B33/131C04B33/32C04B38/068C04B2235/422C04B2235/448C04B2235/3206C04B2235/447C04B2235/3262C04B2235/6562C04B2235/6567C04B2235/77C04B2235/96Y02P40/60
Inventor 周海杨钱文飞孔作帆吴鑫军柴文斌严军陈峰邱以勒
Owner 杭州奥兴筑友科技有限公司
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