CN108147781A - A kind of bed-silt sintering ceramsite and preparation method thereof - Google Patents
A kind of bed-silt sintering ceramsite and preparation method thereof Download PDFInfo
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- CN108147781A CN108147781A CN201711403528.3A CN201711403528A CN108147781A CN 108147781 A CN108147781 A CN 108147781A CN 201711403528 A CN201711403528 A CN 201711403528A CN 108147781 A CN108147781 A CN 108147781A
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- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
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- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
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- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
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- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
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Abstract
The present invention is more particularly directed to a kind of bed-silt sintering ceramsites and preparation method thereof.The bed-silt sintering ceramsite and preparation method thereof, using bed-silt, the slug type haydite of Yellow River mud and flyash manufactured by primary raw material is better than national standard, have the superperformances such as intensity is high, water absorption rate is low, both develop the circular economy of river improvement, and saved soil, and reduce disposal of pollutants, production cost is reduced again, and there is good Social benefit and economic benefit.
Description
Technical field
The present invention relates to construction engineering technical field, more particularly to a kind of bed-silt sintering ceramsite and preparation method thereof.
Background technology
Bed-silt is the soil for being deposited on bottom of river channel or waterside and a small amount of fine sand, accumulates over a long period, riverbed is caused to increase,
River moisture storage capacity is small, and indivedual places even will appear cutout.A large amount of mud that cleaning river generates are difficult to store, land occupation,
Pollute environment.
At present, mostly it is backfill for the utilization of mud, a small amount of for making construction material, mud can not be effectively sharp
With.
Based on the above situation, the present invention proposes a kind of bed-silt sintering ceramsite and preparation method thereof, yellow by adding
Mixture is made to prepare high-performance building haydite in river silt sand.
Invention content
In order to compensate for the shortcomings of the prior art, the present invention provides a kind of bed-silt sintering ceramsite being simple and efficient and its
Preparation method.
The present invention is achieved through the following technical solutions：
A kind of bed-silt sintering ceramsite, it is characterised in that：It is made of the raw material of following parts by weight：
50 ~ 70 parts of bed-silt, 30 ~ 55 parts of Yellow River mud, 15 ~ 30 parts of flyash, 3 ~ 7 parts of coal dust, 20 ~ 35 parts of water.
Mud of the bed-silt for river bottom or waterside, sand soil of the Yellow River mud for Lower Reaches of The Yellow River bank
Earth；The grain size of bed-silt, Yellow River mud and flyash is respectively less than 0.08mm, and moisture content is less than 15%；
The preparation method of bed-silt sintering ceramsite of the present invention, includes the following steps：
（1）By bed-silt, Yellow River mud, flyash, coal dust and water by stoichiometry, it is prepared into raw material ball after mixing；
（2）Raw material ball is dried in drying box；
（3）Raw material ball after drying is placed in calcining furnace and is preheated, is sintered, cooled down；
（4）Natural cooling in air, you can obtain slug type haydite.
The step（1）In, by bed-silt, drying to constant weight for Yellow River mud and flyash, and by the river bed after drying
Mud and Yellow River mud are milled to grain size less than 0.08mm；Then, by the bed-silt under being sieved after sieving, Yellow River mud, flyash
It weighs to be put into blender after constant weight respectively with coal dust and stir evenly in advance；Take what a certain amount of water addition had stirred evenly in advance
In raw material, continue to be prepared into raw material ball after stirring evenly.
The grain size of the raw material ball is 5 ~ 15mm of diameter, and moisture content is 15% ~ 30%.
More preferably, the grain size of raw material ball is 10mm.
The step（2）In, raw material ball is dried 3 ~ 5 hours in 105 DEG C of drying boxes.
The step（3）In, preheating temperature is 400 DEG C ~ 600 DEG C, 20 ~ 30 minutes preheating time；Sintering temperature is 1000
DEG C ~ 1200 DEG C, sintering time 20 ~ 30 minutes；Cooling temperature is come out of the stove at 400 ~ 600 DEG C in stove.
The beneficial effects of the invention are as follows：Bed-silt sintering ceramsite and preparation method thereof, using bed-silt, the Yellow River mud
For slug type haydite of the husky and flyash manufactured by primary raw material better than national standard, it is good to have that intensity is high, water absorption rate is low etc.
Performance had both developed the circular economy of river improvement, and had saved soil, reduced disposal of pollutants, and reduce production cost, tool
There is good Social benefit and economic benefit.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Embodiment is closed, the present invention will be described in detail.It should be noted that specific embodiment described herein is only explaining
The present invention is not intended to limit the present invention.
The bed-silt sintering ceramsite, is made of the raw material of following parts by weight：
50 ~ 70 parts of bed-silt, 30 ~ 55 parts of Yellow River mud, 15 ~ 30 parts of flyash, 3 ~ 7 parts of coal dust, 20 ~ 35 parts of water.
Mud of the bed-silt for river bottom or waterside, sand soil of the Yellow River mud for Lower Reaches of The Yellow River bank
Earth；The grain size of bed-silt, Yellow River mud and flyash is respectively less than 0.08mm, and moisture content is less than 15%；
The preparation method of bed-silt sintering ceramsite of the present invention, includes the following steps：
（1）By bed-silt, Yellow River mud, flyash, coal dust and water by stoichiometry, it is prepared into raw material ball after mixing；
（2）Raw material ball is dried in drying box；
（3）Raw material ball after drying is placed in calcining furnace and is preheated, is sintered, cooled down；
（4）Natural cooling in air, you can obtain slug type haydite.
The step（1）In, by bed-silt, drying to constant weight for Yellow River mud and flyash, and by the river bed after drying
Mud and Yellow River mud are milled to grain size less than 0.08mm；Then, by the bed-silt under being sieved after sieving, Yellow River mud, flyash
It weighs to be put into blender after constant weight respectively with coal dust and stir evenly in advance；Take what a certain amount of water addition had stirred evenly in advance
In raw material, continue to be prepared into raw material ball after stirring evenly.
The grain size of the raw material ball is 5 ~ 15mm of diameter, and moisture content is 15% ~ 30%.
More preferably, the grain size of raw material ball is 10mm.
The step（2）In, raw material ball is dried 3 ~ 5 hours in 105 DEG C of drying boxes.
The step（3）In, preheating temperature is 400 DEG C ~ 600 DEG C, 20 ~ 30 minutes preheating time；Sintering temperature is 1000
DEG C ~ 1200 DEG C, sintering time 20 ~ 30 minutes；Cooling temperature is come out of the stove at 400 ~ 600 DEG C in stove.
Embodiment 1
A kind of bed-silt sintering ceramsite, is made of the raw material of following parts by weight：
70 parts of bed-silt, 55 parts of Yellow River mud, 30 parts of flyash, 5 parts of coal dust, 35 parts of water.
Preparation method includes the following steps：
（1）By alumina tailing and volcanic ash, drying to constant weight, and the moisture content of alumina tailing and volcanic ash is respectively less than 15% at this time；
（2）Alumina tailing after drying and volcanic ash grinding to grain size are less than 0.08mm；
（3）Alumina tailing, volcanic ash and coal dust under being sieved after sieving are weighed into constant weight respectively according to proportioning；
（4）Load weighted three kinds of raw materials are placed in blender and are stirred evenly；
（5）Proportioning is arranged to weigh water, then adds in the raw material stirred evenly, continues to stir；
（6）Raw material is fabricated to the raw material ball of diameter 10mm；
（7）The raw material ball manufactured is put into 105 DEG C of about 5 hours of drying in baking oven；
（8）Raw material ball after drying is placed in sintering furnace, three experience preheating, sintering, cooling processes, preheating temperature 500
DEG C, 30 minutes preheating time；Sintering temperature control is at 1200 DEG C, sintering time 25 minutes；Go out when in-furnace temperature is 500 DEG C
Stove；
（9）By product natural cooling in air, you can obtain slug type haydite.
Embodiment 2
A kind of bed-silt sintering ceramsite, is made of the raw material of following parts by weight：50 parts of bed-silt, 35 parts of Yellow River mud, powder
20 parts of coal ash, 3 parts of coal dust, 27 parts of water.
Preparation method includes the following steps：
（1）By alumina tailing and volcanic ash, drying to constant weight, and the moisture content of alumina tailing and volcanic ash is respectively less than 15% at this time；
（2）Alumina tailing after drying and volcanic ash grinding to grain size are less than 0.08mm；
（3）Alumina tailing, volcanic ash and coal dust under being sieved after sieving are weighed into constant weight respectively according to proportioning；
（4）Load weighted three kinds of raw materials are placed in blender and are stirred evenly；
（5）Proportioning is arranged to weigh water, then adds in the raw material stirred evenly, continues to stir；
（6）Raw material is fabricated to the raw material ball of diameter 5mm；
（7）The raw material ball manufactured is put into 105 DEG C of about 3 hours of drying in baking oven；
（8）Raw material ball after drying is placed in sintering furnace, three experience preheating, sintering, cooling processes, preheating temperature 400
DEG C, 20 minutes preheating time；Sintering temperature control is at 1000 DEG C, sintering time 20 minutes；Go out when in-furnace temperature is 400 DEG C
Stove；
（9）By product natural cooling in air, you can obtain slug type haydite.
Embodiment 3
A kind of bed-silt sintering ceramsite, is made of the raw material of following parts by weight：60 parts of bed-silt, 30 parts of Yellow River mud, powder
25 parts of coal ash, 7 parts of coal dust, 33 parts of water.
Preparation method includes the following steps：
（1）By alumina tailing and volcanic ash, drying to constant weight, and the moisture content of alumina tailing and volcanic ash is respectively less than 15% at this time；
（2）Alumina tailing after drying and volcanic ash grinding to grain size are less than 0.08mm；
（3）Alumina tailing, volcanic ash and coal dust under being sieved after sieving are weighed into constant weight respectively according to proportioning；
（4）Load weighted three kinds of raw materials are placed in blender and are stirred evenly；
（5）Proportioning is arranged to weigh water, then adds in the raw material stirred evenly, continues to stir；
（6）Raw material is fabricated to the raw material ball of diameter 15mm；
（7）The raw material ball manufactured is put into 105 DEG C of about 5 hours of drying in baking oven；
（8）Raw material ball after drying is placed in sintering furnace, three experience preheating, sintering, cooling processes, preheating temperature 600
DEG C, 30 minutes preheating time；Sintering temperature control is at 1080 DEG C, sintering time 30 minutes；Go out when in-furnace temperature is 600 DEG C
Stove；
（9）By product natural cooling in air, you can obtain slug type haydite.
Embodiment 4
A kind of bed-silt sintering ceramsite, is made of the raw material of following parts by weight：55 parts of bed-silt, 40 parts of Yellow River mud, powder
15 parts of coal ash, 4 parts of coal dust, 20 parts of water.
Preparation method includes the following steps：
（1）By alumina tailing and volcanic ash, drying to constant weight, and the moisture content of alumina tailing and volcanic ash is respectively less than 15% at this time；
（2）Alumina tailing after drying and volcanic ash grinding to grain size are less than 0.08mm；
（3）Alumina tailing, volcanic ash and coal dust under being sieved after sieving are weighed into constant weight respectively according to proportioning；
（4）Load weighted three kinds of raw materials are placed in blender and are stirred evenly；
（5）Proportioning is arranged to weigh water, then adds in the raw material stirred evenly, continues to stir；
（6）Raw material is fabricated to the raw material ball of diameter 12mm；
（7）The raw material ball manufactured is put into 105 DEG C of about 4 hours of drying in baking oven；
（8）Raw material ball after drying is placed in sintering furnace, three experience preheating, sintering, cooling processes, preheating temperature 550
DEG C, 25 minutes preheating time；Sintering temperature control is at 1080 DEG C, sintering time 28 minutes；Go out when in-furnace temperature is 450 DEG C
Stove；
（9）By product natural cooling in air, you can obtain slug type haydite.
Embodiment 5
A kind of bed-silt sintering ceramsite, is made of the raw material of following parts by weight：65 parts of bed-silt, 50 parts of Yellow River mud, powder
30 parts of coal ash, 6 parts of coal dust, 30 parts of water.
Preparation method includes the following steps：
（1）By alumina tailing and volcanic ash, drying to constant weight, and the moisture content of alumina tailing and volcanic ash is respectively less than 15% at this time；
（2）Alumina tailing after drying and volcanic ash grinding to grain size are less than 0.08mm；
（3）Alumina tailing, volcanic ash and coal dust under being sieved after sieving are weighed into constant weight respectively according to proportioning；
（4）Load weighted three kinds of raw materials are placed in blender and are stirred evenly；
（5）Proportioning is arranged to weigh water, then adds in the raw material stirred evenly, continues to stir；
（6）Raw material is fabricated to the raw material ball of diameter 8mm；
（7）The raw material ball manufactured is put into 105 DEG C of about 3.5 hours of drying in baking oven；
（8）Raw material ball after drying is placed in sintering furnace, three experience preheating, sintering, cooling processes, preheating temperature 500
DEG C, 24 minutes preheating time；Sintering temperature control is at 1170 DEG C, sintering time 22 minutes；Go out when in-furnace temperature is 550 DEG C
Stove；
（9）By product natural cooling in air, you can obtain slug type haydite.
The bulk density of sintering ceramsite manufactured by embodiment 1 ~ 5 is 600~700kg/m3, apparent density for 1410~
1470kg/m3, cylindrical compress strength are 4.1~4.5MPa, and the 1 hour water absorption rate that soaks is 6.8%~7.2%, and soak 24 hours water absorption rates
It is 8.1%~8.8%, coefficient of softing is 0.80~0.86.
Sintering ceramsite manufactured by embodiment 1 ~ 5 can be applied to structural concrete and structural concrete product, have fine
Social benefit.
Claims (8)
1. a kind of bed-silt sintering ceramsite, which is characterized in that be made of the raw material of following parts by weight：
50 ~ 70 parts of bed-silt, 30 ~ 55 parts of Yellow River mud, 15 ~ 30 parts of flyash, 3 ~ 7 parts of coal dust, 20 ~ 35 parts of water.
2. bed-silt sintering ceramsite according to claim 1, it is characterised in that：The bed-silt is river bottom
Or the mud of waterside, Yellow River mud are the sand soil on Lower Reaches of The Yellow River bank；The grain size of bed-silt, Yellow River mud and flyash
Respectively less than 0.08mm, and moisture content is less than 15%.
3. bed-silt sintering ceramsite according to claim 1 or 2 and preparation method thereof, which is characterized in that including following
Step：
（1）By bed-silt, Yellow River mud, flyash, coal dust and water by stoichiometry, it is prepared into raw material ball after mixing；
（2）Raw material ball is dried in drying box；
（3）Raw material ball after drying is placed in calcining furnace and is preheated, is sintered, cooled down；
（4）Natural cooling in air, you can obtain slug type haydite.
4. the preparation method of bed-silt sintering ceramsite according to claim 3, it is characterised in that：The step（1）In,
By bed-silt, drying to constant weight for Yellow River mud and flyash, and the bed-silt after drying and Yellow River mud are milled to grain size
Less than 0.08mm；Then, by the bed-silt under being sieved after sieving, Yellow River mud, flyash and coal dust weigh constant weight respectively
After be put into blender and stir evenly in advance；It takes in the raw material that a certain amount of water addition has stirred evenly in advance, continues after stirring evenly
It is prepared into raw material ball.
5. the preparation method of bed-silt sintering ceramsite according to claim 4, it is characterised in that：The grain of the raw material ball
Diameter is 5 ~ 15mm of diameter, and moisture content is 15% ~ 30%.
6. the preparation method of bed-silt sintering ceramsite according to claim 5, it is characterised in that：More preferably, raw material ball
Grain size be 10mm.
7. the preparation method of bed-silt sintering ceramsite according to claim 3, it is characterised in that：The step（2）In,
Raw material ball is dried 3 ~ 5 hours in 105 DEG C of drying boxes.
8. the preparation method of bed-silt sintering ceramsite according to claim 3, it is characterised in that：The step（3）In,
Preheating temperature is 400 DEG C ~ 600 DEG C, 20 ~ 30 minutes preheating time；Sintering temperature is 1000 DEG C ~ 1200 DEG C, sintering time 20 ~ 30
Minute；Cooling temperature is come out of the stove at 400 ~ 600 DEG C in stove.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526733A (en) * | 2019-09-02 | 2019-12-03 | 南京工业大学 | A kind of preparation method, the construction method of the light ceramic for backfill technology |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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