CN103708804B - A kind of slurry curing method - Google Patents
A kind of slurry curing method Download PDFInfo
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- CN103708804B CN103708804B CN201310711540.6A CN201310711540A CN103708804B CN 103708804 B CN103708804 B CN 103708804B CN 201310711540 A CN201310711540 A CN 201310711540A CN 103708804 B CN103708804 B CN 103708804B
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- mud
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- solidifying agent
- curing method
- slurry curing
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Abstract
The invention discloses a kind of slurry curing method, first by the Wingdale of the unslaked lime of the fluorgypsum of the quartz sand of the soda ash of the fluorite of 18 ~ 20 mass parts, 20 ~ 23 mass parts, 7 ~ 9 mass parts, 40 ~ 50 mass parts, 10 ~ 12 mass parts, 6 ~ 8 mass parts mixing polishing, make the powder curing agent that specific surface area is larger, after pending mud and above-mentioned solidifying agent powder being mixed, pave solidification.Can within a short period of time, mud is condensed, solidification, have early strong, high-strength advantage, the mud material intensity after its solidification is high, erosion resistance strong, can be used as the construction material under various environment.And present method can be directly used in the higher mud of water content or sludge curing, economy, environmental protection, achieve the recycling of solid waste resource.
Description
Technical field
The invention belongs to environmental technology field, be specially a kind of method of the mud such as curing sludge or cement.
Background technology
Day by day serious along with problem of environmental pollution, people have more urgent demand to environmental protect quality, but along with the diversification of industrial development, source of pollution are also more complicated.As in municipal effluent, just there are the various sewage coming from residential building, unit, school, hospital and communal facility drainage mechanism and collect.And mud is as the fittings of sewage disposal, mostly filtering or the composition cleared up all cannot precipitate and concentrate in mud in sewage, the treatment process of mud mainly comprises the techniques such as concentrated, dehydration, digestion, fermentation, mummification, is dissolved, the mode such as burning disposal, compost treatment and Land_use change enables mud minimizing, resource utilization after process by sanitary landfill, water body.But some mud due to composition too complicated, or in post-processed, sludge components structure is destroyed, and causes it to become the mud that cannot solidify.For this mud, because it is in fluid state, by appropriate disposal, cannot exist easily with water body flow, contaminated area magnified; After muck surface drying, dust can fly away into the medium harm of air, therefore needs in a hurry to make its method settled out in the short period of time, and sludge solidifying agent is exactly one of product of object generation thus.
Simultaneously, some is after treatment still containing the mud of poisonous and harmful substances, be not suitable for sanitary landfill, water body has been dissolved, the mode such as burning disposal, compost treatment and Land_use change processed, therefore be a kind of resource utilization mode preferably as the material of the civil constructions such as road, river levee, Lu Po after processing yet.And the mud after sludge solidifying agent solidification is in the market used as material of construction, effect is not satisfactory, and can not be directly used in the higher mud of water content, usually also needs to do mud to reduce the process of water content, and complex procedures, cost is higher.
Summary of the invention
Technical purpose of the present invention is for problems of the prior art, a kind of slurry curing method that cost is low, solidification effect is good is provided, can be used for the mud from producing in sewage work, industrial production or rivers and canals lake or sludge solidification, and be used as the solidification of grout in construction ground mud and engineering construction.
For realizing above-mentioned technical purpose, technical scheme provided by the invention is:
A kind of slurry curing method, is characterized in that, comprise the following steps:
(1) solidifying agent is made;
A the fluorite (fluorite) of 18 ~ 20 mass parts is crushed to the particle of particle diameter at below 10mm by ();
(b) by the quartz sand mixing of the fluorite after pulverizing and the soda ash (sodium carbonate) of 20 ~ 23 mass parts, 7 ~ 9 mass parts, then by mixture grinding to particle diameter at below 1mm;
C mixed powder after grinding is sent into calcining compartment by (), calcine in the environment of 800 DEG C ~ 900 DEG C;
D the unslaked lime of the fluorgypsum of 40 ~ 50 mass parts, 10 ~ 12 mass parts, the Wingdale of 6 ~ 8 mass parts are mixed rear grinding with fluorite, soda ash and the quartz sand after calcining by (), the mixed powder after grinding is as solidifying agent;
(2) solidified slip;
E mud is sent into stirred pot by slush pump metering by (), solidifying agent in bulk being dropped into storage tank, by mixing than metering, sending into quantitative solidifying agent, uniform stirring by worm conveyor in stirred pot;
F the mud be stirred is sent into construction surface by slush pump by ().
Solidifying agent powder and mud are carried or are stirred under airtight state, can not cause dust pollution to working-yard.The mud be stirred solidifies two hours at normal temperatures, can reach some strength.As described in mixing as adopted, the mud of solidifying agent makes building product, at normal temperatures, also needs the curing cycle of 15-28 days.
Further technical scheme comprises:
In step (two), the solidifying agent Specific Surface Area Measurement general control after grinding is at 300 ~ 600m
2about/kg.And the industrial waste gypsum that described fluorgypsum produces in producing from fluorochemical, as hydrofluoric acid or fluoride salt factory, generally all can produce a large amount of fluorgypsum residues, because it has very strong corrodibility, as can not Appropriate application, all can work the mischief to environment, animals and plants and people.The present invention is suitable for by a large amount of, waste recycling, environmental protection and energy saving.
Further, in step (two), first measure the water content of mud, according to mud water content and target solidification intensity, mix a certain amount of solidifying agent.
Or, in solidified slip step, increase following test procedure:
By mud to be solidified, take out some parts, serial number, add the solidifying agent mixing increment in quality successively, ambient temperature curing, after 2 hours, the mud intensity after test record solidification, selects suitable solidifying agent volume.Further, in above-mentioned steps, the additive ratio unit increased progressively between mud part that sequence number is adjacent is 1% ~ 5% mass parts.
Mud of the present invention refers generally to the mud (i.e. the mass ratio of moisture content and dry earth) that weight water content is 100% ~ 300%, and for the mud of mentioned component, according to inner blending method, the quality additive ratio of solidifying agent is about 15% ~ 35%.
Beneficial effect of the present invention:
1) be applied in the solidification of the slurried materiales such as mud, mud or cement, the fast solidifying, hard soon of mud can be realized.When hardening, certain volumetric expansion can also be produced, be conducive to the structure density improving building product, strengthen grogs cohesiveness, therefore there is early strong, high-strength feature;
2) solidifying agent of the present invention passes through chemical reaction, from mud, absorb a large amount of free water content and change into hydrated product water of constitution, therefore the sedimentation phenomenon before can avoiding flocculation under high water-solid ratio, directly can solidify water content up to the mud of 100%-300% or mud, the intensity after solidification and the volume of solidifying agent proportional;
3) in the present invention, hydration reaction affects little by organic matter, can cohere organic soil, also has good solidification effect to containing organic high cement slurry and mud;
4) solidifying agent that the present invention produces is powdered material, solidifies easy to use, is added in mud or mud by solidifying agent at the construction field (site) stir and can realize fast setting in predetermined ratio;
5) mud after the present invention's solidification or mud both can harden in atmosphere, and also can harden in water, the mud or the sludge solidification body resistance to chemical attack that reach some strength are good, even if the dry wet immersion effect of seawater, cured body also can not ftracture, and intensity does not also decline, therefore the present invention is applied widely.
Embodiment
In order to illustrate technical scheme of the present invention and technique effect, below in conjunction with specific embodiment, the present invention is described further.
Slurry curing method of the present invention, specifically comprises the following steps:
(1) solidifying agent is made;
A the Fluorspar Powder of 18 ~ 20 mass parts is broken to the particle of particle diameter at below 10mm by ();
(b) by the quartz sand mixing of the fluorite after pulverizing and the soda ash of 20 ~ 23 mass parts, 7 ~ 9 mass parts, then by mixture grinding to particle diameter at below 1mm;
C mixed powder after grinding is sent into calcining compartment by (), calcine in the environment of 800 DEG C ~ 900 DEG C;
D the unslaked lime of the fluorgypsum of 40 ~ 50 mass parts, 10 ~ 12 mass parts, the Wingdale of 6 ~ 8 mass parts are mixed rear grinding to specific surface area 300 ~ 600m with fluorite, soda ash and the quartz sand after calcining by ()
2/ kg, the mixed powder after grinding, as solidifying agent, packs for subsequent use;
(2) solidified slip;
E mud is sent into stirred pot by slush pump metering by (), solidifying agent in bulk being dropped into storage tank, by mixing than metering, sending into quantitative solidifying agent, uniform stirring by worm conveyor in stirred pot;
F the mud be stirred is sent into construction surface by slush pump by ().
In above-mentioned steps (two), first measure the water content of mud, according to mud water content and target solidification intensity, mix a certain amount of solidifying agent.For the additive ratio of solidifying agent, can after the step completing above-mentioned making solidifying agent, by many experiments, the relation chart between the solidifying agent volume testing out mud water content, target solidification intensity and set proportioning, the reference foundation in using as reality.
Or, in the curing process, first carry out the test of incorporation:
By mud to be solidified, take out some parts, serial number, add the solidifying agent mixing increment in quality successively, ambient temperature curing, after 2 hours, the mud intensity after test record solidification, selects suitable solidifying agent volume.The additive ratio unit increased progressively between mud part that sequence number is adjacent can be set to the mass parts of 1% ~ 5%.The said normal temperature of the present invention, generally refer to that 15 DEG C to 25 DEG C, as variation of ambient temperature, set time may correspond to adjustment, and general solidification is after two hours, and the intensity of earth can reach some strength, and general volume is more, and solidification intensity is larger.
Applicable mud of the present invention to be weight water content be 100% ~ 300% mud, according to inner blending method, the additive ratio of solidifying agent be 15% ~ 35%(solidifying agent account for gross weight than).To mud or the mud of high-moisture percentage, Common curing agents generally can only be solidified into curdled appearance, there is no actual intensity, therefore be not suitable for use in the processing of building product, or being directly used as material of construction, the present invention is compared with common curing mode, and cost may be slightly high, be more or less the same, but solidification effect is considerable.
Embodiment one:
A kind of slurry curing method, comprises the following steps:
A the Fluorspar Powder of 19 mass parts is broken to the particle of particle diameter at below 10mm by ();
(b) by the quartz sand mixing of the fluorite after pulverizing and the soda ash of 21 ~ 22 mass parts, 8 mass parts, then by mixture grinding to particle diameter at below 1mm;
C mixed powder after grinding is sent into calcining compartment by (), calcine in the environment of 800 DEG C ~ 900 DEG C;
D the unslaked lime of the fluorgypsum of 45 mass parts, 11 mass parts, the Wingdale of 7 mass parts are mixed rear grinding to specific surface area 500m with fluorite, soda ash and the quartz sand after calcining by ()
2/ kg, the mixed powder after grinding, as solidifying agent, packs for subsequent use.
By mud to be solidified, take out some aliquots, serial number, add the solidifying agent mixing increment in quality successively, as following table, stir, solidify under outdoor natural temperature, after 2 hours, the mud intensity after test record solidification, to select suitable solidifying agent volume.
Set time >=2h
| Numbering | 1 | 2 | 3 | 4 | 5 | … | N |
| Incorporation (inside mixing ratio) % | 8% | 10% | 12% | 14% | 16% | … | 8%+(N-1)2% |
E mud is sent into stirred pot by slush pump by (), solidifying agent is dropped into storage tank, by mixing than metering, sends into quantitative solidifying agent, uniform stirring by worm conveyor in stirred pot;
F the mud be stirred is sent into construction surface by slush pump by ().
In the present invention, the mud of solidification also can coordinate certain hard aggregate, as artificial sand etc., makes the building product that reinforcing degree is higher.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand, the present invention is not restricted to the described embodiments, what describe in above-described embodiment and specification sheets just illustrates principle of the present invention, and without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications.Application claims protection domain is defined by appending claims, specification sheets and equivalent thereof.
Claims (9)
1. a slurry curing method, is characterized in that, comprises the following steps:
(1) solidifying agent is made;
A the Fluorspar Powder of 18 ~ 20 mass parts is broken to the particle of particle diameter at below 10mm by ();
(b) by the quartz sand mixing of the fluorite after pulverizing and the soda ash of 20 ~ 23 mass parts, 7 ~ 9 mass parts, then by mixture grinding to particle diameter at below 1mm;
C mixed powder after grinding is sent into calcining compartment by (), calcine in the environment of 800 DEG C ~ 900 DEG C;
D the unslaked lime of the fluorgypsum of 40 ~ 50 mass parts, 10 ~ 12 mass parts, the Wingdale of 6 ~ 8 mass parts are mixed rear grinding with fluorite, soda ash and the quartz sand after calcining by (), the mixed powder after grinding is as solidifying agent;
(2) solidified slip;
E mud is sent into stirred pot by slush pump metering by (), solidifying agent in bulk being dropped into storage tank, by mixing than metering, sending into quantitative solidifying agent, uniform stirring by worm conveyor in stirred pot;
F the mud be stirred is sent into construction surface by slush pump by ().
2. a kind of slurry curing method according to claim 1, is characterized in that:
The mud mixing described solidifying agent is adopted to make building product, at normal temperatures, maintenance 15-28 days.
3. a kind of slurry curing method according to claim 1, is characterized in that:
In step (two), first measure the water content of mud, according to mud water content and target solidification intensity, mix quantitative solidifying agent.
4. a kind of slurry curing method according to claim 1, is characterized in that:
In (two) solidified slip step, also comprise test procedure;
By mud to be solidified, take out some parts, serial number, mix the solidifying agent of increment in quality successively, ambient temperature curing, after 2 hours, the mud intensity after test record solidification, selects suitable solidifying agent volume.
5. a kind of slurry curing method according to claim 4, is characterized in that:
In above-mentioned test procedure, the additive ratio unit increased progressively between mud part that sequence number is adjacent is 1% ~ 5% mass parts.
6. a kind of slurry curing method according to claim arbitrary in claim 1-5, is characterized in that:
The weight water content of described mud is 100% ~ 300%, and by inner blending method, the quality additive ratio of solidifying agent is 15% ~ 35%.
7. a kind of slurry curing method according to claim 6, is characterized in that:
Described mud be produce from sewage work mud, the grout of construction usage, working-yard ground mud or rivers and canals, lake desilting mud.
8. a kind of slurry curing method according to claim 6, is characterized in that:
In step (d), the solidifying agent Specific Surface Area Measurement after grinding is 300 ~ 600m
2/ kg.
9. a kind of slurry curing method according to claim 6, is characterized in that:
The industrial waste gypsum that described fluorgypsum produces in producing from fluorochemical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310711540.6A CN103708804B (en) | 2013-12-20 | 2013-12-20 | A kind of slurry curing method |
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|---|---|---|---|
| CN201310711540.6A CN103708804B (en) | 2013-12-20 | 2013-12-20 | A kind of slurry curing method |
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| CN103708804A CN103708804A (en) | 2014-04-09 |
| CN103708804B true CN103708804B (en) | 2015-12-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108128991B (en) * | 2017-11-24 | 2018-11-09 | 东南大学 | A kind of ectopic activities magnesia carbonization curing sludge soil processing system |
| CN110330272A (en) * | 2019-04-22 | 2019-10-15 | 安徽理工大学 | A kind of solidification regeneration product process of construction slurry |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1209422A (en) * | 1997-08-21 | 1999-03-03 | 北京市高水矿山工程与材料研究所 | Inorganic solidified grouting material |
| CN100562501C (en) * | 2006-05-31 | 2009-11-25 | 北京中永基固化剂科技发展有限公司 | A kind of sludge curing agent and application thereof |
| CN101607812B (en) * | 2009-07-16 | 2011-04-13 | 温州大学 | Compound curing agent of high cement slurry |
| CN102976586A (en) * | 2012-12-19 | 2013-03-20 | 天津生态城环保有限公司 | Silt curing agent containing industrial waste carbide slag and curing method |
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