CN102381868A - Method for rapidly preparing ceramsite by utilizing mudflat sludge - Google Patents
Method for rapidly preparing ceramsite by utilizing mudflat sludge Download PDFInfo
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- CN102381868A CN102381868A CN2011102115788A CN201110211578A CN102381868A CN 102381868 A CN102381868 A CN 102381868A CN 2011102115788 A CN2011102115788 A CN 2011102115788A CN 201110211578 A CN201110211578 A CN 201110211578A CN 102381868 A CN102381868 A CN 102381868A
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- solidifying agent
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- mud
- ceramsite
- haydite
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention relates to the technical fields of solid waste treatment and reclamation and aims at providing a method for rapidly preparing ceramsite by utilizing mudflat sludge. The method comprises the following steps of: feeding the mudflat sludge to a solidifying reactor, adding a solidifying agent component A, and stirring for primary solidification; adding a solidifying agent component B, and stirring for deep solidification to form a primary material; transferring the primary material to a pelletizing disk for granulation, drying at room temperature, and then feeding into a roasting kiln for firing after preheating; and cooling the roasted ceramsite, and grading to obtain the finished product. The ceramsite obtained by using the preparation method of the invention has various functions of light weight and high strength, thermal insulation, shock resistance and fire protection, dampproofness, sound absorption and noise reduction and the like, is regular in size and is easy to grade; and the pressure resistance and other various indexes of the ceramsite meet the national standard. By using the method of the invention, the resource utilization rate of the mudflat sludge is simultaneously improved, and the requirement of a ceramsite industry on a natural soil raw material is reduced simultaneously.
Description
Technical field
The invention belongs to that solid waste is handled and the resource technology field, have to relate to a kind of method of utilizing beach mud to prepare haydite fast, is again a kind of method of beach mud being carried out resource utilization and harmless treatment simultaneously.
Background technology:
Coastal beach is meant the seashore mud owing to tidal action and natural succession generation along the line, and the seashore that is made up of such material is exactly so-called muddy coast, is commonly called as " beach ".The coastal beach of China distributes very extensively, and according to national littoral zone and tidal flat resources comprehensive survey data, the mouth North gets the Yalu River, Liaoning Province reaches the northern logical sequence river mouth of Guangxi Zhuang Autonomous Region in the south, 4 big marine sites, and coastal 11 provinces, cities and regions have beach 21709km
2, and coastal beach is still long in silt at the abundant littoral zone of sediment source.Show the national coastal beach long 300km that becomes silted up approximately every year according to statistics
2, the beach total amount is very abundant.The while beach is enclosed and cultivated comprehensive exploitation and is had a high potential, and mainly shows as: open up the salt pan, development salt chemical engineering raw material site; Enclose to be coated with and make ground, increase cultivated area; Development beach culture fishery; Fill beach, solve coastal cities, traffic and industrial land.Mud is regarded as a kind of resource effectively utilizes, when administering pollution, turn waste into wealth, realize the resource utilization of mud, have significant environment and economic benefit.
But the engineering characteristic of mud is very poor, mainly shows as the water ratio height, and compressibility is big, and intensity is low, and poor stability, supporting capacity are low, and discharging consolidation is slow, is the soft stream of moulding and moulds state etc., and its basic reason is that water ratio is high.If can water ratio in the mud be reduced, its compressibility will obviously reduce, and intensity will significantly improve simultaneously.Therefore, improving the valid approach of mud engineering characteristic is " diminishing processing ".
Traditional mud diminishing is handled has a variety of methods, but less also not the having of the remarkable cost of effect.Wherein the prior heat treatment method need consume lot of energy, and also inapplicable to the higher mud of sand cut.The environmental problem of being brought by high temperature simultaneously more and more causes people's attention, and this method is difficult to promote on a large scale.The physics evaporation is sloughed redundant moisture in the mud through the method for natural airing or mechanical dehydration.This method apparatus expensive, processing efficiency are low, are not suitable for large-area shore reclamation.The chemosetting technology then is to utilize the mode of adding chemical assistant, and the free water content in the mud is reduced, and forms certain syndeton between particle, and final curing reaches certain engineering strength requirement.But traditional chemosetting technology is just handled sludge solidification, handles material basically as filler, so not only can cause the waste of a large amount of chiltern resources, also might bring some engineerings and environmental problem.
On the other hand, China's building trade is huge to the demand of light-weight sintering ceramic particle, and in the town dweller of China and industrial sewage are handled, and is bigger to the demand as the ceramic grain filter of water treatment device filter packing.Conventional haydite processing is exactly to utilize the clay that takes the farmland, forms through granulation and sintering, although also there is report to utilize industrial sludge and domestic sludge preparing haydite, is less share, but also will considers problem such as heavy metal contamination.Thereby cause soil resource to run off in a large number, it is quite serious to ruin the field phenomenon.
So utilizing solidifying agent chemosetting mud and curing sludge is prepared haydite is to study industrialization focus direction at present.But former application utilizes mucky soil to prepare in the haydite patent, still has three big problems: the one, and the mud raw material that most of patent is used is directed against fresh water mud such as municipal sludge, limited amount, complicated component, raw material sources existing problems after the mass-producing; The 2nd, utilize the mud ratio low, other mineral volumes are higher, cost is bigger, and mineral spike prescription is complicated, and the possibility of secondary pollution is arranged; The 3rd, loaded down with trivial details to the pre-treatment degree technology of mud, follow-up high temperature sintering temperature is too high, sintering time is long, and the overall manufacturing cycle is longer, has problems such as energy consumption height and production efficiency are low after the large-scale application.
Summary of the invention
The technical problem that the present invention will solve is, overcomes deficiency of the prior art, and a kind of method of utilizing beach mud to prepare haydite fast is provided, to realize the innoxious and disposal of resources to beach mud.
Be the technical solution problem, the invention provides a kind of method of utilizing beach mud to prepare haydite fast, may further comprise the steps:
(1) the beach mud that will remove foreign material (branch or bulk shell etc.) is delivered in the curing reaction device of band whipping device through travelling belt, and this moment, the mud water ratio was 70～100%;
(2) in beach mud, add solidifying agent A component, stir and carried out primary curing reaction in 15 minutes; Add solidifying agent B component again, stir and carried out deeply-curing in 15 minutes, form elementary material; This moment, water ratio was reduced to 5%-20%.
(3) change elementary material over to the pan-pelletizer granulation, then in drying at room temperature 8～12 hours; Send into roasting kiln 300～500 ℃ of preheatings after 20～35 minutes again and fire, maturing temperature is 1000～1300 ℃, and roasting time is 15～30 minutes;
(4) get into cold fortune machine cooling behind the haydite kiln discharge after the roasting, behind gradation, obtain the haydite finished product;
In the said step (2), 6～15% of solidifying agent A component and the elementary material total mass of solidifying agent B ingredients constitute mud, and the quality of solidifying agent B component is the twice of solidifying agent A component;
Said solidifying agent A component belongs in polysaccharide polymer compound, the CMC 99.5 acrylic amide resin one or more by sodium hydroxide, potassium permanganate, wooden sodium sulfonate, trolamine, Mierocrystalline cellulose and forms;
Said solidifying agent B component by in flyash, mine tailing, calcium sulfate, sodium sulfate, unslaked lime, salt of wormwood, cement, the water glass one or more form.
Among the present invention, in the ash content of said beach mud, the mass percent of contained silicon-dioxide is no less than 40%.
Among the present invention, the haydite outward appearance for preparing is a porous surface shape ball-type solid, and tap density is 300～600 kilograms per cubic meter, and water-intake rate is 3～15%.
3 days unconfined compression strengths of elementary material described in the step of the present invention (2) are 0.5 MPa, and 7 days unconfined compression strengths are 0.8 MPa, and 14 days unconfined compression strengths are 1.6 MPas.
The present invention is a main raw material with beach mud; One or more solidifying agent of forming to be belonged to by flyash, calcium sulfate, sodium sulfate, unslaked lime, salt of wormwood, cement, water glass, sodium hydroxide, potassium permanganate, wooden sodium sulfonate, trolamine, Mierocrystalline cellulose in polysaccharide polymer compound, the CMC 99.5 acrylic amide resin are auxiliary material; Best proportioning is screened; And investigated the influence of each principal element in the sintering procedure such as preheating temperature, warm up time, maturing temperature and roasting time to product performance, confirmed the optimum process condition of roasting light ceramic.
The present invention draws the advantage of prior heat treatment method, mechanical treatment process and chemosetting technology; Utilize beach mud physics-chem characteristic; In conjunction with the ever-increasing situation of haydite demand, on the early-stage Study basis, exploitation one cover utilizes beach mud to prepare the method for haydite fast.Thereby the environmental problem that solves the direct landfill of beach mud and bring makes the ceramic product of preparation use as material of construction and adsorption cleaning, and makes its economically feasible, is convenient to generally promote.
With respect to prior art, the present invention has following advantage:
1, the present invention takes the advantage of mud chemosetting technology, and utilization is to the diminishing treatment process of free water, and fast setting in a hour reaches elementary material requirement behind the use solidifying agent.This technology reduces the primary treatment to raw material mud, optimizes technology, shortens the production cycle greatly.
2, the raw material that the present invention adopted is coastal beach mud.This mud composition is simple; Organic content is low; Loss on ignition is lacked a lot than municipal sludge, and at the shared large percentage of raw material, has lightweight, high-strength, fire-resistant, waterproof and multiple advantages such as shock-resistant through reasonable proportioning agglomerating product; Be specially adapted to large-scale production and application, satisfy in the Process of Urbanization heavy demand haydite.
3, the present invention adopts basic theories such as inorganic organic gel gel material curing reaction and high temperature inorganic particle solid state reaction; Utilize the advantage of heat treating process, mechanical treatment process; Utilize the technology of fast setting, drying at room temperature, preheating, roasting; Comprehensive reduce the energy consumption of preparation process, technology is simple, be easy to promote.
Embodiment
Utilize beach mud to prepare the method for haydite fast among the present invention, may further comprise the steps:
(1) the beach mud that will remove foreign material is delivered in the curing reaction device of band whipping device through travelling belt;
(2) in beach mud, add solidifying agent A component, stir and carried out primary curing reaction in 15 minutes; Add solidifying agent B component again, stir and carried out deeply-curing in 15 minutes, form elementary material;
(3) change elementary material over to the pan-pelletizer granulation, then in drying at room temperature 8～12 hours; Send into roasting kiln 300～500 ℃ of preheatings after 20～35 minutes again and fire, maturing temperature is 1000～1300 ℃, and roasting time is 15～30 minutes;
(4) get into cold fortune machine cooling behind the haydite kiln discharge after the roasting, behind gradation, obtain the haydite finished product;
In the said step (2), 6～15% of solidifying agent A component and the elementary material total mass of solidifying agent B ingredients constitute mud, and the quality of solidifying agent B component is the twice of solidifying agent A component;
Said solidifying agent A component belongs in polysaccharide polymer compound, the CMC 99.5 acrylic amide resin one or more by sodium hydroxide, potassium permanganate, wooden sodium sulfonate, trolamine, Mierocrystalline cellulose and forms;
Said solidifying agent B component by in flyash, mine tailing, calcium sulfate, sodium sulfate, unslaked lime, salt of wormwood, cement, the water glass one or more form.
Testing data among each embodiment sees the following form:
| The specific embodiment sequence number | 1 | 2 | 3 | 4 | 5 | 6 |
| Amount of sludge (umber) | 100 | 100 | 100 | 100 | 100 | 100 |
| Solidifying agent A volume (umber) | 2 | 3 | 4 | 5 | 3 | 2 |
| Solidifying agent B volume (umber) | 4 | 6 | 8 | 10 | 6 | 4 |
| The drying at room temperature time (h) | 12 | 10 | 9 | 8 | 9 | 10 |
| Preheating temperature (℃) | 300 | 350 | 400 | 500 | 450 | 300 |
| Warm up time (min) | 35 | 30 | 25 | 20 | 25 | 30 |
| Maturing temperature (℃) | 1200 | 1250 | 1100 | 1000 | 1150 | 1300 |
| Roasting time (min) | 25 | 20 | 30 | 35 | 30 | 15 |
Solidifying agent A component sees the following form:
Solidifying agent B component sees the following form:
| The specific embodiment sequence number | 1 | 2 | 3 | 4 | 5 | 6 |
| Flyash (%) | 10 | 30 | 5 | 20 | 20 | 10 |
| Mine tailing (%) | 15 | 20 | 20 | 30 | 15 | 0 |
| Calcium sulfate (%) | 0 | 5 | 5 | 0 | 15 | 0 |
| Sodium sulfate (%) | 10 | 0 | 0 | 5 | 0 | 10 |
| Unslaked lime (%) | 30 | 20 | 20 | 10 | 10 | 35 |
| Salt of wormwood (%) | 0 | 10 | 5 | 15 | 30 | 10 |
| Cement (%) | 30 | 10 | 30 | 20 | 5 | 25 |
| Water glass (%) | 5 | 5 | 15 | 0 | 5 | 10 |
The haydite finished product outward appearance for preparing is a porous surface shape ball-type solid, and tap density is 300～600 kilograms per cubic meter, and water-intake rate is 3～15%.
At last, it is also to be noted that what more than enumerate only is practical implementation example of the present invention.Obviously, the invention is not restricted to above examples of implementation, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (4)
1. method of utilizing beach mud to prepare haydite fast may further comprise the steps:
(1) the beach mud that will remove foreign material is delivered in the curing reaction device of band whipping device through travelling belt;
(2) in beach mud, add solidifying agent A component, stir and carried out primary curing reaction in 15 minutes; Add solidifying agent B component again, stir and carried out deeply-curing in 15 minutes, form elementary material;
(3) change elementary material over to the pan-pelletizer granulation, then in drying at room temperature 8～12 hours; Send into roasting kiln 300～500 ℃ of preheatings after 20～35 minutes again and fire, maturing temperature is 1000～1300 ℃, and roasting time is 15～30 minutes;
(4) get into cold fortune machine cooling behind the haydite kiln discharge after the roasting, behind gradation, obtain the haydite finished product;
In the said step (2), 6～15% of solidifying agent A component and the elementary material total mass of solidifying agent B ingredients constitute mud, and the quality of solidifying agent B component is the twice of solidifying agent A component;
Said solidifying agent A component belongs in polysaccharide polymer compound, the CMC 99.5 acrylic amide resin one or more by sodium hydroxide, potassium permanganate, wooden sodium sulfonate, trolamine, Mierocrystalline cellulose and forms;
Said solidifying agent B component by in flyash, mine tailing, calcium sulfate, sodium sulfate, unslaked lime, salt of wormwood, cement, the water glass one or more form.
2. method according to claim 1 is characterized in that, in the ash content of said beach mud, the mass percent of silicon-dioxide is no less than 40%.
3. method according to claim 1 is characterized in that, the haydite finished product outward appearance for preparing is a porous surface shape ball-type solid, and tap density is 300～600 kilograms per cubic meter, and water-intake rate is 3～15%.
4. method according to claim 1 is characterized in that, 3 days unconfined compression strengths of elementary material described in the step (2) are 0.5 MPa, and 7 days unconfined compression strengths are 0.8 MPa, and 14 days unconfined compression strengths are 1.6 MPas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011102115788A CN102381868A (en) | 2011-07-27 | 2011-07-27 | Method for rapidly preparing ceramsite by utilizing mudflat sludge |
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| CN2011102115788A CN102381868A (en) | 2011-07-27 | 2011-07-27 | Method for rapidly preparing ceramsite by utilizing mudflat sludge |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617097A (en) * | 2012-04-09 | 2012-08-01 | 武汉科技大学 | Non-sintered ceramic aggregate with stone coal vanadium extraction tailings as main raw material and preparation method thereof |
| CN103121828A (en) * | 2013-01-31 | 2013-05-29 | 江南大学 | Sludge modification material |
| CN103739293A (en) * | 2013-12-12 | 2014-04-23 | 宁波平海建材有限公司 | Ceramsite manufacturing method |
| CN103910503A (en) * | 2014-02-18 | 2014-07-09 | 祝建中 | Curing sintering-free granulation method for sludge |
| CN104016715A (en) * | 2014-05-27 | 2014-09-03 | 泉州师范学院 | Leather sludge hot dipping method for production of three-dimensional network cured closed carbonaceous ceramsite |
| CN107459305A (en) * | 2017-08-04 | 2017-12-12 | 福建港湾岩土工程集团有限公司 | A kind of curing agent that municipal sludge is processed into haydite |
| WO2019100512A1 (en) * | 2017-11-24 | 2019-05-31 | 东南大学 | Treatment system for ex-situ carbonization and solidification of silt soil using active magnesium oxide and method thereof |
| CN110835247A (en) * | 2018-08-16 | 2020-02-25 | 扬州大学 | Emulsified asphalt and cement composite cementing material solidified sludge non-fired ceramsite |
| CN114920542A (en) * | 2022-05-23 | 2022-08-19 | 武汉铭创新海生态科技有限公司 | Preparation process of high-volume sludge water storage material |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617097A (en) * | 2012-04-09 | 2012-08-01 | 武汉科技大学 | Non-sintered ceramic aggregate with stone coal vanadium extraction tailings as main raw material and preparation method thereof |
| CN102617097B (en) * | 2012-04-09 | 2013-08-21 | 武汉科技大学 | Non-sintered ceramic aggregate with stone coal vanadium extraction tailings as main raw material and preparation method thereof |
| CN103121828A (en) * | 2013-01-31 | 2013-05-29 | 江南大学 | Sludge modification material |
| CN103739293B (en) * | 2013-12-12 | 2015-04-15 | 宁波平海建材有限公司 | Ceramsite manufacturing method |
| CN103739293A (en) * | 2013-12-12 | 2014-04-23 | 宁波平海建材有限公司 | Ceramsite manufacturing method |
| CN103910503A (en) * | 2014-02-18 | 2014-07-09 | 祝建中 | Curing sintering-free granulation method for sludge |
| CN103910503B (en) * | 2014-02-18 | 2016-04-13 | 祝建中 | The unburned method of granulating of a kind of sludge solidification |
| CN104016715A (en) * | 2014-05-27 | 2014-09-03 | 泉州师范学院 | Leather sludge hot dipping method for production of three-dimensional network cured closed carbonaceous ceramsite |
| CN104016715B (en) * | 2014-05-27 | 2016-06-22 | 泉州师范学院 | Leather sludge hot dipping produces cubic network and solidifies the method closing carbonaceous haydite |
| CN107459305A (en) * | 2017-08-04 | 2017-12-12 | 福建港湾岩土工程集团有限公司 | A kind of curing agent that municipal sludge is processed into haydite |
| WO2019100512A1 (en) * | 2017-11-24 | 2019-05-31 | 东南大学 | Treatment system for ex-situ carbonization and solidification of silt soil using active magnesium oxide and method thereof |
| US10920390B2 (en) | 2017-11-24 | 2021-02-16 | Southeast University | Treatment system and method for ex-situ carbonization and solidification of silt soil using active magnesium oxide |
| CN110835247A (en) * | 2018-08-16 | 2020-02-25 | 扬州大学 | Emulsified asphalt and cement composite cementing material solidified sludge non-fired ceramsite |
| CN110835247B (en) * | 2018-08-16 | 2021-11-09 | 扬州大学 | Emulsified asphalt and cement composite cementing material solidified sludge non-fired ceramsite |
| CN114920542A (en) * | 2022-05-23 | 2022-08-19 | 武汉铭创新海生态科技有限公司 | Preparation process of high-volume sludge water storage material |
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Application publication date: 20120321 |