CN101186485A - Sewage sludge shale ceramic particle and preparation method thereof - Google Patents
Sewage sludge shale ceramic particle and preparation method thereof Download PDFInfo
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- CN101186485A CN101186485A CNA2007100931380A CN200710093138A CN101186485A CN 101186485 A CN101186485 A CN 101186485A CN A2007100931380 A CNA2007100931380 A CN A2007100931380A CN 200710093138 A CN200710093138 A CN 200710093138A CN 101186485 A CN101186485 A CN 101186485A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
Sewage sludge shale ceramsite and a preparation method thereof are provided, which relates to the light energy-saving ceramsite of building materials and a preparation method thereof. The ceramsite of the invention consists of sewage sludge, shale and admixtures; the method of the invention uses the sewage sludge, the shale and the admixtures as raw materials; first, the shale is grinded into shale powder and then the sewage sludge, the shale and the admixtures are mixed and wedged to be granulated into round particles and then enter into a kiln; the products are obtained after going through drying, preheating, barking and being taken out of the kiln for cooling. The ceramsite employs the sewage sludge discharged directly from sewage treatment plants and the shale as major materials, which greatly saves land resource and partial shale mine resource and provides an extremely good way for the non-hazardous and reclaiming treatment of sewage sludge; the method of the invention is simple, energy-saving and resources-saving and the density rank of the ceramsite is 300-700. The ceramsite of the invention can be widely applied in lightweight aggregate bricks, lightweight aggregate sheet materials, lightweight aggregate concrete, etc. and can also be taken as the filter material of sewage treatment, the water-retaining agent in cultivation, etc.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of haydite that is used for the light energy conservation building materials and preparation method thereof.
Background technology
Haydite is to be starting material with clay, shale, flyash etc., through being processed into sphere, forms through the quick calcining expansion of high temperature again, and be that a kind of lightweight and the inside that certain intensity is arranged are the cavernous light-weight aggregate of honeycomb.Haydite can be used for producing building material products such as light aggregate concrete, concrete segment, used the concrete product of haydite can obviously reduce the buildings deadweight, strengthen shock resistance of the building, significantly improve the thermal and insulating performance of buildings, reduce the energy consumption of buildings etc. significantly, wherein, the lightweight performance of haydite is good more, and performance boosts such as the deadweight reduction of buildings, heat insulating are also big more.Simultaneously, light ceramic is not only the New Building Materials of building energy conservation consumption reduction, but also the future that is widely used in fields such as sewage disposal, flower cultures.
At present, the production of China's haydite totally also is in small-scale, high energy consumption, low-quality, the single situation of kind, and this is because the starting material that a lot of haydite producers are selected are unreasonable, preparation technology is unreasonable etc. causes to a great extent.In addition, China haydite market also mainly is based on ordinary ceramsite, lacks light ceramic, particularly Superlight ceramsites product, and building energy conservation is to light ceramic, and particularly Superlight ceramsites has heavy demand.Therefore, the composition of raw materials of research haydite is developed rational preparation method, increases the ratio of light ceramic product, is an important directions of haydite industrial development.At present; China's light ceramic product is mainly based on leca; though with the clay is that raw material can be produced relative light-weight haydite; but can consume a large amount of clay resources; destroy and plough, do not meet the policy that state guarantee is ploughed, now; the development space of some haydite producers that with the clay is main raw material is more and more littler, even the bankruptcy that stopped production.In addition, though be that the lytag of main raw material can be a large amount of sharp useless with flyash,, ceramic product water-intake rate height, rate of expansion is little, is difficult to produce the fine light ceramic.Pure is the haydite that starting material are fired with shale, to shale ore quality requirements harshness, burns the temperature height that expands, and rate of expansion is low, and production energy consumption is big, and the economic technology benefit is lower.As publication number is " super-light shale ceramsite " patent of CN 1413952A, the production method that to disclose a kind of independent employing shale be raw-material Superlight ceramsites, though the haydite tap density of its production is very little,, strict to material composition, the chemical ingredients requirement of shale is: SiO
2Be 56.2～59.1%, Al
2O
3Be 15.7～17%, Fe
2O
3Be 7.2～8.1%, CaO is 3.1～4.3%, and WgO is 2.5～3.2%, SO
3Be 0.04～0.06, loss on ignition is 7.9～8.3%, and the total amount of clay mineral composition requires to require very narrow greater than 40% to the shale compositing range, there is not universality, in addition, it needs the moisture of extra adding 10～12%, consumption of water resource, total water content will be controlled and reach 40～45%, total water content is too high, simultaneously firing temperature up to 1300 ℃～1450 ℃, this makes that the energy consumption of firing in the kiln is very big.Aspect the clay haydite fully of utilization dirty (silt), also existing reports, but owing to the water ratio of dirty (silt) mud itself is very high, therefore, the process of dehydration, oven dry is arranged all on the preparation method generally.As publication number is " mud ceramic granules and preparation method thereof " patent of CN 1149038A, and disclosed preparation method needs processes such as nature dehydration, mechanical dehydration, oven dry, and this has just increased requirement of starting material stockyard and heat energy consumption.And for example publication number is in " producing the method for garbage ceramsites and sludge ceramsite " patent of C04B 18/30, to also needing nature dehydration and mechanical dehydration process in the production method of sludge ceramsite, and requirement reaches moisture percentage in sewage sludge≤35%, and need to mix with clay, can consume certain clay resource.
Summary of the invention
The object of the invention is the deficiency at existing ceramic product and preparation method thereof; a kind of sewage sludge shale ceramic particle and preparation method thereof is provided, has raw material sources extensively and sufficient, not the land occupation resource; and can effectively utilize waste; the protection environment, its preparation method is simple, and energy consumption is lower; characteristics such as the performance of ceramic product is good, specific tenacity is high, water-intake rate is low; in addition, method of the present invention not only can be prepared common light ceramic product, can also prepare 300 grades Superlight ceramsites.
Mechanism of the present invention is: under the condition of high temperature; generations such as clay mineral in the haydite materials and oxide compound fusing to a certain degree forms has the vitrifying mineral that plasticity has certain viscosity again; some components can produce certain gas in the haydite simultaneously; this part gas is included among the haydite; haydite just can produce expansion; temperature reduces the thin vitreous duricrust of back haydite outside formation one deck, thereby forms a kind of light-weight spheroidal particle.Haydite of the present invention is to utilize shale can form more mullite after high-temperature roasting, mineral constituents such as quartz, help improving the intensity of haydite, after the shale high-temperature roasting, dense materials, the characteristics that water-intake rate is very low, also make the water-intake rate of haydite reduce, utilize the organic matter of mud that the expansion component of haydite is provided simultaneously, certain combustion heat value also is provided, has reduced the coal consumption of baking ceramsite, in addition, utilize the chemical constitution after the chemical constitution of sewage sludge is improved mixing raw material, both increase the expansion character of haydite, also reduced the maturing temperature of haydite, reduced the roasting energy consumption.In addition, conducts such as the introducing common lime stone of the appropriate amount admixture of fluxing, the burning of the improving haydite performance that expands.
The technical scheme that realizes the object of the invention is: a kind of component and weight percentage of sewage sludge shale ceramic particle are as follows:
Shale: 50～95%
Sewage sludge: 5～50%
Admixture: 0～5%
Wherein: sewage sludge is the directly sewage sludge of discharging of sewage work, and its water ratio allows to reach 90%; Shale is common shale; Admixture is the class admixtures of fluxing such as common lime stone flour or calcium carbide ground-slag.
A kind of preparation method of sewage sludge shale ceramic particle, directly the sewage sludge of discharging and common shale and the class admixtures of fluxing such as limestone powder or calcium carbide ground-slag are raw material with sewage work, earlier shale is finely ground to shale powder, again sewage sludge, levigated shale powder and admixture are mixed, reproduce a balling-up, go into kiln then behind the sintering procedure of super-dry, preheating, roasting, the kiln discharge naturally cooling forms.Concrete method steps is as follows:
(1) grinding shale
Adopt earlier milling equipments such as ball mill or vibrating mill with shale levigate after, adopting the aperture again is the sieve of 0.1～0.315mm, collects the shale powder of sieving and enters subsequent preparation process, unsifted shale returns to be regrinded.
(2) mixing raw material and granulation balling-up
(1) finish after, according to (1) shale powder prepared of step: sewage sludge: the weight ratio of admixture is 1: 0.053～1: 0～0.1 ratio, and its admixture is the class admixtures of fluxing such as limestone powder or calcium carbide ground-slag.Earlier shale powder, sewage sludge and admixture are sent in the batch mixing pug mill, carry out pug and mix, rub white silk, make mixture become the mixture of the good quality homogeneous of plasticity-, again mixture is sent into the twin rollers extruding pelletization, then the cylindrical pellet of extruding is sent in the rotating cylinder nodulizer, carry out round as a ball after, just prepare spherical particle.
(3) ceramsite sintering
(2) step was sent into (2) spherical particle prepared of step in the bitubular rotary kiln after finishing, and carried out three sections of drying, pre-burning, roasting successively and fired, and the temperature of its dryer section is 100～300 ℃, time 20～45min; The temperature of preheating section is 300～600 ℃, time 5～20min; The temperature of firing section is 1050～1250 ℃, time 5～15min.
(4) cooling
(3) step finish after, will through three sections fire after the haydite of kiln discharge, send into cooling drum, carry out naturally cooling after, just prepare density rating and be 300～700 grades sewage sludge shale ceramic particle, salient features meets or exceeds the requirement of GB/T 17431.1-1998 to haydite fully.
After the present invention adopts technique scheme, mainly contain following characteristics:
(1) adopting sewage sludge and shale is the main raw material prescription, in the preparation of Superlight ceramsites, has avoided using clay to be raw material, has saved land resources in a large number, and simultaneously, the utilization of sewage sludge can be saved part shale ore resource again.
(2) directly utilize the sewage sludge of sewage work, need not dewater to mud, treating processes such as oven dry, can allow the water ratio of sewage sludge to reach 90%, make the preparation method simple, energy consumption is relatively low, and is economical and feasible.
(3) select to use the class admixtures of fluxing such as wide material sources, cheap common lime stone flour or calcium carbide ground-slag, can effectively reduce the haydite maturing temperature, increase the rate of expansion of haydite.
(4) in field of environment engineering, be a very big difficult problem to the disposal of sewage sludge, the present invention also provides good approach for innoxious, disposal of resources sewage sludge with sewage sludge as raw material.
(5) the mullite component of utilizing shale to form after high-temperature roasting helps improving the intensity of Superlight ceramsites, and after the shale high-temperature roasting, dense materials can effectively reduce the haydite water-intake rate simultaneously.
(6) mud itself generally has very high organic content, and the combustion heat value in certain ceramsite sintering stage can be provided.It is estimated 1m
3Flammable carbon in the mud haydites of book structure divides can reach 40kg, by burning the back 1m that expands
3Haydite calculates, and can reduce about coal consumption 10kg.
(7) contain very high moisture in the sewage sludge that sewage work directly discharges, need not add moisture in the preparation process, just can reach the requirement of raw material granulation balling-up water ratio, can the conserve water resource.
(8) the inventive method is simple, firing temperature is lower, and the density rating of the haydite that employing the inventive method is prepared is 300～700 grades, when preparing ordinary ceramsite, can prepare the well behaved Superlight ceramsites of lightweight.
(9) haydite of the present invention can be widely used in light energy conservation building material field such as light-weight aggregate building block, light-weight aggregate sheet material, light aggregate concrete, also can be used as uses such as sewage disposal filtrate, cultivation water-holding agent.
Embodiment
Below in conjunction with embodiment, further specify the present invention.
Embodiment 1
A kind of component and weight percentage of sewage sludge shale ceramic particle are as follows:
Shale: 75%
Sewage sludge: 20%
Limestone powder admixture: 5%
Embodiment 2
A kind of component and weight percentage of sewage sludge shale ceramic particle are as follows:
Shale: 50%
Sewage sludge: 50%
Limestone powder admixture: 0%
Embodiment 3
A kind of component and weight percentage of sewage sludge shale ceramic particle are as follows:
Shale: 95%
Sewage sludge: 5%
Limestone powder admixture: 0%
Embodiment 4
A kind of component and weight percentage of sewage sludge shale ceramic particle are as follows:
Shale: 70%
Sewage sludge: 27%
Calcium carbide ground-slag admixture: 3%
Embodiment 5
A kind of preparation method's of sewage sludge shale ceramic particle concrete steps are as follows:
(1) grinding shale
Adopt earlier the ball mill milling equipment with shale levigate after, adopting the aperture is that the vibratory screening apparatus of 0.22mm sieves, and collects the shale powder of sieving and enters subsequent preparation process, unsifted shale returns to be regrinded.
(2) mixing raw material and granulation balling-up
(1) finish after, go on foot the shale powder of preparing according to (1): sewage sludge: the weight ratio of limestone powder admixture is 1: 0.27: 0.06 a ratio, earlier shale powder, sewage sludge and limestone powder admixture are sent in the batch mixing pug mill, carry out pug and mix, rub white silk, make mixture become the mixture of the good quality homogeneous of plasticity-, again mixture is sent into the twin rollers extruding pelletization, then the cylindrical pellet of extruding is sent in the rotating cylinder nodulizer, carry out round as a ball after, just prepare spherical particle.
(3) ceramsite sintering
(2) step was sent into (2) spherical particle prepared of step in the bitubular rotary kiln after finishing, and carried out three sections of drying, pre-burning, roasting successively and fired.The temperature of its dryer section is 200 ℃, time 30min; The temperature of preheating section is 400 ℃, time 10min; The temperature of firing section is 1150 ℃, time 10min.
(4) cooling
After (3) step finished, will through three sections fire after the haydite of kiln discharge, send into cooling drum, carry out naturally cooling after, just prepare density rating and be 300 grades sewage sludge shale ceramic particle, can put in storage.
Embodiment 6
A kind of preparation method's of sewage sludge shale ceramic particle concrete steps are as follows:
(1) grinding shale
Adopt earlier the ball mill milling equipment with shale levigate after, adopting the aperture again is that the vibratory screening apparatus of 0.315mm sieves, and collects the shale powder of sieving and enters subsequent preparation process, unsifted shale returns to be regrinded.
(2) mixing raw material and granulation balling-up
(1) finish after, go on foot the shale powder of preparing according to (1): sewage sludge: the weight ratio of limestone powder admixture is 1: 1: 0 a ratio, earlier shale powder, sewage sludge and limestone powder admixture are sent in the batch mixing pug mill, carry out pug and mix, rub white silk, make mixture become the mixture of the good quality homogeneous of plasticity-, again mixture is sent into the twin rollers extruding pelletization, then the cylindrical pellet of extruding is sent in the rotating cylinder nodulizer, carry out round as a ballly, just prepare spherical particle.
(3) ceramsite sintering
(2) step was sent into (2) spherical particle prepared of step in the bitubular rotary kiln after finishing, and carried out three sections of drying, pre-burning, roasting successively and fired.The temperature of its dryer section is 300 ℃, time 45min; The temperature of preheating section is 600 ℃, time 20min; The temperature of firing section is 1050 ℃, time 15min.
(4) cooling
After (3) step finished, will through three sections fire after the haydite of kiln discharge send into cooling drum, carry out naturally cooling after, just prepare density rating and be 700 grades sewage sludge shale ceramic particle, can put in storage.
Embodiment 7
A kind of preparation method's of sewage sludge shale ceramic particle concrete steps are as follows:
(1) grinding shale
Adopt earlier the ball mill milling equipment that shale is levigate, adopting the aperture again is that the vibratory screening apparatus of 0.1mm sieves, and collects the shale powder of sieving and enters subsequent preparation process, and unsifted shale returns to be regrinded.
(2) mixing raw material and granulation balling-up
(1) finish after, go on foot the shale powder of preparing according to (1): sewage sludge: the weight ratio of limestone powder admixture is 1: 0.053: 0 a ratio, earlier shale powder, sewage sludge and limestone powder admixture are sent in the batch mixing pug mill, carry out pug and mix, rub white silk, make mixture become the mixture of the good quality homogeneous of plasticity-, again mixture is sent into the twin rollers extruding pelletization, then the cylindrical pellet of extruding is sent in the rotating cylinder nodulizer, carry out round as a ballly, just prepare spherical particle.
(3) ceramsite sintering
(2) step was sent into (2) spherical particle prepared of step in the bitubular rotary kiln after finishing, and carried out three sections of drying, pre-burning, roasting successively and fired.The temperature of its dryer section is 100 ℃, time 20min; The temperature of preheating section is 300 ℃, time 5min; The temperature of firing section is 1250 ℃, time 5min.
(4) cooling
(3) step will be sent into cooling drum through three sections haydites of firing kiln discharge after finishing, carry out naturally cooling after, just prepare density rating and be 600 grades sewage sludge shale ceramic particle, can put in storage.
Embodiment 8
A kind of preparation method's of sewage sludge shale ceramic particle concrete steps are as follows:
(1) grinding shale
Employing earlier is levigate with shale as the vibrating mill milling equipment, and the employing aperture is that the vibratory screening apparatus of 0.15mm sieves, and collects the shale powder of sieving and enters subsequent preparation process, and unsifted shale returns to be regrinded.
(2) mixing raw material and granulation balling-up
(1) finish after, go on foot the shale powder of preparing according to (1): sewage sludge: the weight ratio of calcium carbide ground-slag admixture is 1: 0.9: 0.1 a ratio, earlier shale powder, sewage sludge and calcium carbide ground-slag admixture are sent in the batch mixing pug mill, carry out pug and mix, rub white silk, make mixture become the mixture of the good quality homogeneous of plasticity-.Mixture being sent into the twin rollers extruding pelletization, then the cylindrical pellet of extruding is sent in the rotating cylinder nodulizer, carry out round as a ballly, just prepare spherical particle.
(3) ceramsite sintering
(2) step was sent into (2) spherical particle prepared of step in the bitubular rotary kiln after finishing, and carried out three sections of drying, pre-burning, roasting successively and fired.The temperature of its dryer section is 150 ℃, time 25min; The temperature of preheating section is 400 ℃, time 15min; The temperature of firing section is 1250 ℃, time 8min.
(4) cooling
After (3) step finished, will through three sections fire after the haydite of kiln discharge send into cooling drum, carry out naturally cooling after, just prepare density rating and be 500 grades sewage sludge shale ceramic particle, can put in storage.
Experimental result
Sewage sludge shale ceramic particle with embodiment 5～8 prepares, carried out the detection of salient features according to GB/T 17431.1-1998 method, its result such as following table:
| Embodiment | Tap density (kg/m 3) | Cylindrical compress strength (Mpa) | Water-intake rate (%) |
| 5 | 294 | 1.0 | 10.87 |
| 6 | 692 | 3.2 | 4.33 |
| 7 | 557 | 2.8 | 6.54 |
| 8 | 462 | 2.3 | 9.23 |
Show by above result, adopt the salient features of the sewage sludge shale ceramic particle of method of the present invention preparation to meet or exceed the requirement of GB/T 17431.1-1998.
Claims (7)
1. sewage sludge shale ceramic particle is characterized in that component and weight percentage are as follows:
Shale: 50～95%
Sewage sludge: 5～50%
Admixture: 0～5%
Wherein: sewage sludge is the directly sewage sludge of discharging of sewage work, and its water ratio allows to reach 90%; Shale is common shale; Admixture is common lime stone flour or calcium carbide ground-slag.
2. according to the described sewage sludge shale ceramic particle of claim 1, it is characterized in that a kind of component of sewage sludge shale ceramic particle and weight percentage are as follows:
Shale: 75%
Sewage sludge: 20%
Limestone powder admixture: 5%
Or
Shale: 50%
Sewage sludge: 50%
Limestone powder admixture: 0%
Or
Shale: 95%
Sewage sludge: 5%
Limestone powder admixture: 0%
Or
Shale: 70%
Sewage sludge: 27%
Calcium carbide ground-slag admixture: 3%.
3. the preparation method of a sewage sludge shale ceramic particle is characterized in that concrete method steps is as follows:
(1) grinding shale
Adopt earlier milling equipment such as ball mill with shale levigate after, adopting the aperture again is the sieve of 0.1～0.315mm, collects the shale powder of sieving, unsifted shale returns to be regrinded;
(2) mixing raw material and granulation balling-up
(1) finish after, go on foot the shale powder of preparing according to (1): sewage sludge: the weight ratio of admixture is 1: 0.053～1: 0～0.1 ratio, its admixture is limestone powder or calcium carbide ground-slag, earlier shale powder, sewage sludge and admixture are sent in the batch mixing pug mill, carrying out pug mixes, rubs and practice the mixture that becomes the good quality homogeneous of plasticity-, again mixture is sent into the twin rollers extruding pelletization, then the cylindrical pellet of extruding is sent in the rotating cylinder nodulizer, carry out round as a ball;
(3) ceramsite sintering
(2) step finish after, the spherical particle that (2) step prepared is sent in the bitubular rotary kiln, carrying out three sections of drying, pre-burning, roasting successively fires, the temperature of its dryer section is 100～300 ℃, time 20～45min, the temperature of preheating section is 300～600 ℃, time 5～20min, and the temperature of firing section is 1050～1250 ℃, time 5～15min;
(4) cooling
After (3) step finished, will through three sections fire after the haydite of kiln discharge, send into cooling drum, carry out naturally cooling after, just prepare density rating and be 300～700 grades sewage sludge shale ceramic particle.
4. according to the preparation method of the described sewage sludge shale ceramic particle of claim 3, it is characterized in that a kind of preparation method's of sewage sludge shale ceramic particle concrete steps require as follows:
(1) grinding shale
Adopt earlier the ball mill milling equipment with shale levigate after, adopting the aperture is that the vibratory screening apparatus of 0.22mm sieves, and collects the shale powder of sieving, unsifted shale returns to be regrinded;
(2) mixing raw material and granulation balling-up
(1) finish after, go on foot the shale powder of preparing according to (1): sewage sludge: the weight ratio of limestone powder admixture is 1: 0.27: 0.06 a ratio, earlier shale powder, sewage sludge and limestone powder admixture are sent in the batch mixing pug mill, carrying out pug mixes, rubs and practice the mixture that becomes the good quality homogeneous of plasticity-, again mixture is sent into the twin rollers extruding pelletization, then the cylindrical pellet of extruding is sent in the rotating cylinder nodulizer, carried out round as a ball;
(3) ceramsite sintering
(2) step finish after, the spherical particle that (2) step prepared is sent in the bitubular rotary kiln, carrying out three sections of drying, pre-burning, roasting successively fires, the temperature of its dryer section is 200 ℃, time 30min, the temperature of preheating section is 400 ℃, time 10min, and the temperature of firing section is 1150 ℃, time 10min;
(4) cooling
After (3) step finished, will through three sections fire after the haydite of kiln discharge, send into cooling drum, carry out naturally cooling after, just prepare density rating and be 300 grades sewage sludge shale ceramic particle.
5. according to the preparation method of the described sewage sludge shale ceramic particle of claim 3, it is characterized in that a kind of preparation method's of sewage sludge shale ceramic particle concrete steps require as follows:
(1) grinding shale
Adopt earlier the ball mill milling equipment with shale levigate after, adopting the aperture again is that the vibratory screening apparatus of 0.315mm sieves, and collects the shale grinding that sieves, unsifted shale returns to be regrinded;
(2) mixing raw material and granulation balling-up
(1) finish after, go on foot the shale powder of preparing according to (1): sewage sludge: the weight ratio of limestone powder admixture is 1: 1: 0 a ratio, earlier shale powder, sewage sludge and limestone powder admixture are sent in the batch mixing pug mill, carrying out pug mixes, rubs and practice the mixture that becomes the good quality homogeneous of plasticity-, again mixture is sent into the twin rollers extruding pelletization, then the cylindrical pellet of extruding is sent in the rotating cylinder nodulizer, carried out round as a ball;
(3) ceramsite sintering
(2) step finish after, the spherical particle that (2) step prepared is sent in the bitubular rotary kiln, carrying out three sections of drying, pre-burning, roasting successively fires, the temperature of control dryer section is 300 ℃, time 45min, the temperature of preheating section is 600 ℃, time 20min, and the temperature of firing section is 950 ℃, time 15min.
(4) cooling
After (3) step finished, will through three sections fire after the haydite of kiln discharge send into cooling drum, carry out naturally cooling after, just prepare density rating and be 700 grades sewage sludge shale ceramic particle.
6. according to the preparation method of the described sewage sludge shale ceramic particle of claim 3, it is characterized in that a kind of preparation method's of sewage sludge shale ceramic particle concrete steps require as follows:
(1) grinding shale
Adopt earlier the ball mill milling equipment that shale is levigate, adopting the aperture again is that the vibratory screening apparatus of 0.1mm sieves, and collects the shale powder of sieving, and unsifted shale returns to be regrinded;
(2) mixing raw material and granulation balling-up
(1) finish after, go on foot the shale powder of preparing according to (1): sewage sludge: the weight ratio of limestone powder admixture is 1: 0.053: 0 a ratio, earlier shale powder, sewage sludge and limestone powder admixture are sent in the batch mixing pug mill, carrying out pug mixes, rubs and practice the mixture that becomes the good quality homogeneous of plasticity-, again mixture is sent into the twin rollers extruding pelletization, then the cylindrical pellet of extruding is sent in the rotating cylinder nodulizer, carried out round as a ball;
(3) ceramsite sintering
(2) step finish after, the spherical particle that (2) step prepared is sent in the bitubular rotary kiln, carrying out three sections of drying, pre-burning, roasting successively fires, the temperature that plays dryer section is 100 ℃, time 20min, the temperature of preheating section is 300 ℃, time 5min, and the temperature of firing section is 1250 ℃, time 5min;
(4) cooling
After (3) step finished, will through three sections fire after the haydite of kiln discharge send into cooling drum, carry out naturally cooling after, just prepare density rating and be 600 grades sewage sludge shale ceramic particle.
7. according to the preparation method of the described sewage sludge shale ceramic particle of claim 3, it is characterized in that a kind of preparation method's of sewage sludge shale ceramic particle concrete steps require as follows:
(1) grinding shale
Adopt the vibrating mill milling equipment that shale is levigate earlier, the employing aperture is that the vibratory screening apparatus of 0.15mm sieves, and collects the shale powder of sieving, and unsifted shale returns to be regrinded;
(2) mixing raw material and granulation balling-up
(1) finish after, go on foot the shale powder of preparing according to (1): sewage sludge: the weight ratio of calcium carbide ground-slag admixture is 1: 0.9: 0.1 a ratio, earlier shale powder, sewage sludge and calcium carbide ground-slag admixture are sent in the batch mixing pug mill, carrying out pug mixes, rubs and practice the mixture that becomes the good quality homogeneous of plasticity-, mixture is being sent into the twin rollers extruding pelletization, then the cylindrical pellet of extruding is sent in the rotating cylinder nodulizer, carried out round as a ball;
(3) ceramsite sintering
(2) step finish after, the spherical particle that (2) step prepared is sent in the bitubular rotary kiln, carrying out three sections of drying, pre-burning, roasting successively fires, the temperature of control dryer section is 150 ℃, time 25min, the temperature of preheating section is 400 ℃, time 15min, and the temperature of firing section is 1250 ℃, time 8min;
(4) cooling
(3) step was sent the haydite of kiln discharge into cooling drum after finishing, carry out naturally cooling after, just prepare density rating and be 500 grades sewage sludge shale ceramic particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100931380A CN101186485A (en) | 2007-12-14 | 2007-12-14 | Sewage sludge shale ceramic particle and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN101613219A (en) * | 2009-07-31 | 2009-12-30 | 柳树 | A kind of method of utilizing mud and cow dung to make haydite |
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| CN102219417A (en) * | 2011-03-28 | 2011-10-19 | 重庆大学 | Method for producing artificial light aggregate by using sludge |
| CN102260090A (en) * | 2011-04-12 | 2011-11-30 | 河北省地矿局第三地质大队 | Method for preparing ceramsite by using gold extraction tailings |
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| CN103664145A (en) * | 2013-12-12 | 2014-03-26 | 宁波平海建材有限公司 | Round ceramsite preparation technology |
| CN104876540A (en) * | 2015-05-20 | 2015-09-02 | 四川亨利德新型建筑材料有限公司 | Preparation method of shale sludge haydite |
| CN104926362A (en) * | 2014-03-19 | 2015-09-23 | 江常辉 | Water filtering material and manufacturing method thereof |
| CN105664603A (en) * | 2016-03-22 | 2016-06-15 | 安徽华铂再生资源科技有限公司 | Effective pollution-free purifying method for desulfuration tail gas in smelting of secondary lead |
| CN105753352A (en) * | 2016-01-25 | 2016-07-13 | 李国安 | Technique for producing building aggregate with industrial waste residues as supporting material |
| CN106045474A (en) * | 2016-05-27 | 2016-10-26 | 浙江方远建材科技有限公司 | High-volume stone flour lightweight ceramsite and preparation method thereof |
| CN106069817A (en) * | 2016-08-25 | 2016-11-09 | 芜湖悠派护理用品科技股份有限公司 | A kind of haydites of book structure cat litter and preparation method thereof |
| CN106587793A (en) * | 2016-10-28 | 2017-04-26 | 长安大学 | Artificial aggregate and pervious concrete capable of purifying road surface water and preparation method |
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| CN106866169A (en) * | 2017-04-17 | 2017-06-20 | 辽宁恒宇环保机械设备制造有限公司 | A kind of processing system of hazardous waste sludge recycling, method and the haydite produced using the system, method |
| CN107216126A (en) * | 2017-04-19 | 2017-09-29 | 青岛易生态环保科技有限公司 | Using municipal sludge as the preparation method of the haydite of raw material |
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| CN101343172B (en) * | 2008-08-20 | 2013-03-27 | 厦门大学 | Light porcelain granule with ocean floor sullage as raw material and preparation thereof |
| CN101613219A (en) * | 2009-07-31 | 2009-12-30 | 柳树 | A kind of method of utilizing mud and cow dung to make haydite |
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| CN110330247B (en) * | 2019-07-16 | 2021-11-12 | 沈阳建筑大学 | Environment-friendly ultra-light sludge ceramsite and preparation method thereof |
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| CN110922161A (en) * | 2019-11-06 | 2020-03-27 | 成都南联科技有限公司 | Method for preparing building ceramsite by using quartz sand tailings |
| CN112142445A (en) * | 2020-09-27 | 2020-12-29 | 重庆泽渝建材有限公司 | Method for preparing ceramsite by mixing municipal domestic sludge and shale |
| CN114950268A (en) * | 2022-04-08 | 2022-08-30 | 重庆大学 | Papermaking wastewater recycling process and device |
| CN115433021A (en) * | 2022-09-13 | 2022-12-06 | 山西太钢工程技术有限公司 | Process for preparing ceramsite concrete block by roasting industrial water treatment sludge in high-temperature rotary kiln |
| CN115819105A (en) * | 2022-10-20 | 2023-03-21 | 中化环境修复(上海)有限公司 | Method for preparing ceramsite from polluted soil and boron mud by recycling and ceramsite |
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