CN100352553C - Water washing programme for incinerated bottom slag - Google Patents
Water washing programme for incinerated bottom slag Download PDFInfo
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- CN100352553C CN100352553C CNB200410035029XA CN200410035029A CN100352553C CN 100352553 C CN100352553 C CN 100352553C CN B200410035029X A CNB200410035029X A CN B200410035029XA CN 200410035029 A CN200410035029 A CN 200410035029A CN 100352553 C CN100352553 C CN 100352553C
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Abstract
The present invention relates to a water washing program for incinerated bottom slag, which is a program for reprocessing graded material formed after the incinerated bottom slag is crushed, separated and sieved. The graded material is conveyed to a feed hopper; graded material arrays delivered by the feed hopper are conveyed into a sieving machine; after the graded material is sieved, the graded material is split into various types with different ranges of particle diameters, wherein the graded material with the particle diameters of coarse particles can be reutilized according to the nature of the particles; the graded material with middle particle diameters can be firstly conveyed to a magnetic separator; after ferrous metal substances are separated, the graded material with the middle particle diameters enters a grinding mill and is ground; the ground graded material can be conveyed to a balter and processed; the graded material with fine particle diameters is conveyed to a water washing device and stays in contact with water for at least more than 2 minutes; after processed by the water washing device, the graded material is dewatered by a dewaterer; the dewatered graded material is the favorable graded material finished product with odour removal, uniformity and high stability; the favorable graded material finished product can be reutilized and widely used in different engineering.
Description
Technical field
The present invention means and a kind ofly is applied to handle the incinerated bottom slag and makes output homogenieity and stability for the bottom slag incineration washing procedure that utilizes gradating material again.
Background technology
Growth, the expansion of consumption, variety of life along with industry, also greatly increase by the discarded object quantity of refuse that places such as factory, family, office produced and become the main cause of ecological deterioration, also therefore waste reduction and resource recycling are to be inevitable trend, and wherein the incineration of garbage is the program of decrement, it also is one of present environmental protection policy, through looking into flying dust and the end slag that the incineration of garbage is derived, wherein 80% is end slag (state produces the end slag about five kilotons every day approximately), at present more the end slag that produces is delivered to and is buried factory and do and cover the worker, can't utilize effectively again.
The inferior United States Patent (USP) the 5th, 308 of looking into, No. 368, the 5th, 890, No. 663, the 5th, 906, No. 321, the 5th, 992, No. 776, the 4th, 737, though disclosing with broken, screening, No. 356 patent cases separate, or add stabilizing agent and stablize the technology contents that utilizes again behind the incinerated bottom slag, yet the end slag after it is handled can frowziness and the disappearance of the stripping again of nuisance can't overcome, also cause the doubt that utilizes again.
Summary of the invention
Be to be to be to provide a kind of bottom slag incineration washing procedure with main purpose of the present invention, can be with the stink removal and with leachable harmful substance stripping, make the gradating material homogeneous and stablely utilize again more after handling through water wash procedures for safety, and can be widely used in the various engineering, and meet the environmental friendly principle of resource recycling.
A kind of bottom slag incineration washing procedure, the reprocessing handling procedure of system is become the incinerated bottom slag behind handling procedures such as cracking and sorting and screening gradating material, washing process of the present invention promptly is the program that gradating material is cleaned and screens, water wash procedures of the present invention mainly is to send gradating material to feed hopper earlier, the gradating material that feed hopper is provided and delivered out then is conveyed into screening machine, the screen cloth of screening facility multilayer different-grain diameter, the screen cloth of each layer of nationality in the vibrations process and isolate the gradating material of different-grain diameter, the particle diameter that after screening, gradating material is divided into several different range, wherein particle diameter is coarse grained gradating material, this partly can utilize according to particle properties again, and middle grain-size grade batching is to be delivered to magnetic separator earlier, grind entering grater after the ferrous metal separating substances again, gradating material after grinding is carried and is sent the screening machine processing back to, the gradating material of fine grain is then sent into the first road washing equipment, washing equipment can be waterwheel, centrifugal washing equipment or do not have the water logging bubble equipment of machinery, and the gradating material of aforementioned fine grain enters the first road washing equipment at least about the time of staying that contacts with water that has more than 2 minutes, be beneficial to harmful substance stripping leachable in the gradating material, and aforementioned gradating material after handling through the first road washing equipment can be selected directly to form finished product through the dewaterer processed, perhaps also can handle to insert again via the second road washing equipment earlier and carry out processed in the dewaterer, and be to have preferable homogenieity and stability for utilizing again via the gradating material after the bottom slag incineration washing procedure of the present invention, and can be widely used in the various engineering.
Moreover, aforementioned bottom slag incineration washing procedure, wherein in grain-size grade batching deliver to earlier that magnetic separator separates the ferrous metal thing after the gradating material after the magnetic separation enters gradating material after grater grinds again sends back to and directly send into the first road washing equipment after the handling process system of screening machine can change screening through the fine screening machine into.
Other is the person, aforementioned bottom slag incineration washing procedure, wherein the weight ratio of gradating material of the employed water yield of the first road washing equipment and desire washing be 0.6 or more for preferable, and wherein the weight ratio of the gradating material washed of the employed water yield of the second road washing equipment and desire also is to be preferable more than 0.6.
In addition, aforementioned bottom slag incineration washing procedure, be to add stabilizing agent in the water-washing process of the water-washing process of the first road washing equipment and the second road washing equipment wherein, the heavy metal of the finished product after the order washing can't ooze out and promote its stability, and this kind stabilizing agent then can adopt the low salt compounds of heavy metal solubility such as sulfide, phosphoric acid salt, hydroxide, organic polymer, inorganic polymer.
Description of drawings
Fig. 1 is the flow chart of first embodiment of the invention.
Fig. 2 is the flow chart of second embodiment of the invention.
Fig. 3 is the flow chart of third embodiment of the invention.
Fig. 4 is the flow chart of fourth embodiment of the invention.
Fig. 5 is the draining water analysis table after the water wash procedures of first embodiment of the invention.
Fig. 6 is a gradating material property list after the washing of first embodiment of the invention.
Fig. 7 is the draining water analysis table after the water wash procedures of third embodiment of the invention.
Fig. 8 is a gradating material property list after the washing of third embodiment of the invention.
The specific embodiment
Reference is shown in Figure 1 to be the flow chart of first embodiment of bottom slag incineration washing procedure of the present invention, wherein incinerated bottom slag 10 is to become gradating material 1 earlier behind handling procedures such as a series of fragmentation and screening, and washing process of the present invention promptly is the program that gradating material is cleaned and screens, water wash procedures of the present invention mainly is to send gradating material to feed hopper 2 earlier, depiler in the feed hopper 2 can be adjusted the gradating material load, send into screening machine 3 by the depiler gradating material of being provided and delivered out via conveyer belt, the screen cloth of screening machine 3 tool multilayer different-grain diameters, the screen cloth of each layer of mat in the vibrations process and isolate the gradating material of different-grain diameter, in this screening process, also can utilize the bath source with the high pressure water washing gradating material simultaneously, the particle diameter that after screening, gradating material is divided into three kinds of different range, the isolated particle diameter of ground floor Screening Network is coarse grained gradating material 31, this partly can utilize according to particle properties again, between first and second layer Screening Network is middle grain-size grade batching 32, the gradating material of this particle size range is delivered to magnetic separator 4 earlier via conveyer belt, with the ferrous metal separating substances, gradating material after screening enters grater 5 again and grinds, gradating material after grinding is sent screening machine 3 back to via conveyer belt again and is handled, flow into the first road washing equipment 6 less than the fine grain gradating material 33 of the second layer Screening Network channel of then flowing through downstream, this kind washing equipment 6 can be waterwheel, centrifugal washing equipment, the water logging bubble equipment or other washing equipments that do not have machinery, present embodiment is that the employing waterwheel is a washing equipment, and waterwheel mainly comprises a tank and ladle out the sand runner, and the aforementioned gradating material that is lower than second layer Screening Network through screening flushing particle diameter enters the time of staying that contacts with water that has approximately in the first road washing equipment (being waterwheel) 6 more than 2 minutes, be beneficial to harmful substance stripping leachable in the gradating material, via the sand runner of ladling out of continuous action the gradating material that soaks in the tank has been ladled out and inserted in the dewaterer 8 again, gradating material after the dehydration then is through washing, removal stink after screening and processings such as fragmentation and good finished product 331 with preferable homogenieity and stability be for utilization again, and can be widely used in the various engineering.
Moreover, aforementioned bottom slag incineration washing procedure, wherein the weight ratio of the gradating material of the first road washing equipment, the 6 employed water yields and desire washing is for preferable more than 0.6.
Other is the person, aforementioned bottom slag incineration washing procedure, wherein be to add stabilizing agent in the water-washing process of the first road washing equipment 6, the heavy metal of the finished product after the order washing can't ooze out and promote its stability, and this kind stabilizing agent then can adopt the low salt compounds of heavy metal solubility such as sulfide, phosphoric acid salt, hydroxide, organic polymer, inorganic polymer.
Please cooperate reference shown in Figure 2 is the flow chart of second embodiment of bottom slag incineration washing procedure of the present invention, wherein incinerated bottom slag 10 is to become gradating material 1 earlier behind handling procedures such as a series of fragmentation and screening, and washing process of the present invention promptly is the program that gradating material is cleaned and screens, water wash procedures of the present invention mainly is to send gradating material to feed hopper 2 earlier, depiler in the feed hopper 2 can be adjusted the gradating material load, send into screening machine 3 by the depiler gradating material of being provided and delivered out via conveyer belt, the screen cloth of screening machine 3 tool multilayer different-grain diameters, the screen cloth of each layer of nationality in the vibrations process and isolate the gradating material of different-grain diameter, in this screening process, also can utilize the bath source with the high pressure water washing gradating material simultaneously, the particle diameter that after screening, gradating material is divided into three kinds of different range, the isolated particle diameter of ground floor Screening Network is coarse grained gradating material 31, this partly can utilize according to particle properties again, between first and second layer Screening Network is middle grain-size grade batching 32, the gradating material of this particle size range is delivered to magnetic separator 4 earlier via conveyer belt, with the ferrous metal separating substances, gradating material after screening enters grater 5 again and grinds, gradating material after grinding will screen back fine grain gradating material 33 ' the send into first road washing equipment 6 via fine screening machine 30 again, flow into the first road washing equipment 6 less than the fine grain gradating material 33 of the second layer Screening Network channel of then flowing through downstream, this kind washing equipment 6 can be waterwheel, centrifugal washing equipment, the water logging bubble equipment or other washing equipments that do not have machinery, present embodiment is that the employing waterwheel is a washing equipment, the first road washing equipment (being waterwheel) 6 of present embodiment mainly comprises a tank and ladles out the sand runner, and aforesaid gradating material enters the time of staying that contacts with water that has approximately in the first road washing equipment (being waterwheel) 6 more than 2 minutes, be beneficial to harmful substance stripping leachable in the gradating material, via the sand runner of ladling out of continuous action the gradating material that soaks in the tank has been ladled out and inserted in the dewaterer 8 again, gradating material after the dehydration then is through washing, deodorizing after screening and processings such as fragmentation and good finished product 331 with preferable homogenieity and stability be for utilization again, and can be widely used in the various engineering.
Moreover, aforementioned bottom slag incineration washing procedure, wherein the weight ratio of the gradating material of the first road washing equipment, the 6 employed water yields and desire washing is for preferable more than 0.6.
Other is the person, aforementioned bottom slag incineration washing procedure, wherein be to add stabilizing agent in the water-washing process of the first road washing equipment 6, the heavy metal of the finished product after the order washing can't ooze out and promote its stability, and this kind stabilizing agent then can adopt the low salt compounds of heavy metal solubility such as sulfide, phosphoric acid salt, hydroxide, organic polymer, inorganic polymer.
Please cooperate reference shown in Figure 3 is the flow chart of the 3rd embodiment of bottom slag incineration washing procedure of the present invention, wherein incinerated bottom slag 10 is to become gradating material 1 earlier behind handling procedures such as a series of fragmentation and screening, and washing process of the present invention promptly is the program that gradating material is cleaned and screens, water wash procedures of the present invention mainly is to send gradating material to feed hopper 2 earlier, depiler in the feed hopper 2 can be adjusted the gradating material load, send into screening machine 3 by the depiler gradating material of being provided and delivered out via conveyer belt, the screen cloth of screening machine 3 tool multilayer different-grain diameters, the screen cloth of each layer of nationality in the vibrations process and isolate the gradating material of different-grain diameter, in this screening process, also can utilize the bath source with the high pressure water washing gradating material simultaneously, the particle diameter that after screening, gradating material is divided into various different range, the isolated particle diameter of ground floor Screening Network is coarse grained gradating material 31, this partly can utilize according to particle properties again, between first and second layer Screening Network is middle grain-size grade batching 32, the gradating material of this particle size range is delivered to magnetic separator 4 earlier via conveyer belt, with the ferrous metal separating substances, gradating material after screening enters grater 5 again and grinds, gradating material after grinding is sent screening machine 3 back to via conveyer belt again and is handled, flow into the first road washing equipment 6 less than the fine grain gradating material 33 of the second layer Screening Network channel of then flowing through downstream, this kind washing equipment 6 can be waterwheel, centrifugal washing equipment, the water logging bubble equipment or other washing equipments that do not have machinery, present embodiment is that the employing waterwheel is a washing equipment, and the first road washing equipment (waterwheel) 6 of present embodiment mainly comprises a tank and ladles out the sand runner, and the aforementioned gradating material that is lower than second layer Screening Network through screening flushing particle diameter enters the time of staying that contacts with water that has approximately in the first road washing equipment (being waterwheel) 6 more than 2 minutes, be beneficial to harmful substance stripping leachable in the gradating material, ladled out and inserted the gradating material that soaks in the tank in the runner via the sand runner of ladling out of continuous action again, nationality was gone out by the pipeline swash of wave in the channel by another flushing water source and brought the gradating material in the runner into the second road washing equipment (being waterwheel) 7 again this moment, gradating material still has the time of staying that contacts with water more than 2 minutes in the second road washing equipment (being waterwheel) 7, via the sand runner of ladling out of continuous action the gradating material that soaks in the tank has been ladled out and inserted in the dewaterer 8 again, gradating material after the dehydration then is through washing, deodorizing after screening and processings such as fragmentation and good finished product 331 with preferable homogenieity and stability be for utilization again, and can be widely used in the various engineering.
Moreover, aforementioned bottom slag incineration washing procedure, wherein the weight ratio of gradating material of the first road washing equipment, the 6 employed water yields and desire washing be 0.6 or more for preferable, and wherein the weight ratio of the gradating material washed of the second road washing equipment, the 7 employed water yields and desire also is to be preferable more than 0.6.
Other is the person, aforementioned bottom slag incineration washing procedure, be to add stabilizing agent in the water-washing process of the water-washing process of the first road washing equipment 6 and the second road washing equipment 7 wherein, the heavy metal of the finished product after the order washing can't ooze out and promote its stability, and this kind stabilizing agent then can adopt the low salt compounds of heavy metal solubility such as sulfide, phosphoric acid salt, hydroxide, organic polymer, inorganic polymer.
Please cooperate reference shown in Figure 4 is the flow chart of the 4th embodiment of bottom slag incineration washing procedure of the present invention, wherein incinerated bottom slag 10 is to become gradating material 1 earlier behind handling procedures such as a series of fragmentation and screening, and washing process of the present invention promptly is the program that gradating material is cleaned and screens, water wash procedures of the present invention mainly is to send gradating material to feed hopper 2 earlier, depiler in the feed hopper 2 can be adjusted the gradating material load, send into screening machine 3 by the depiler gradating material of being provided and delivered out via conveyer belt, the screen cloth of screening machine 3 tool multilayer different-grain diameters, the screen cloth of each layer of mat in the vibrations process and isolate the gradating material of different-grain diameter, in this screening process, also can utilize the bath source with the high pressure water washing gradating material simultaneously, the particle diameter that after screening, gradating material is divided into various different range, the isolated particle diameter of ground floor Screening Network is coarse grained gradating material 31, this partly can utilize according to particle properties again, between first and second layer Screening Network is middle grain-size grade batching 32, the gradating material of this particle size range is delivered to magnetic separator 4 earlier via conveyer belt, with the ferrous metal separating substances, gradating material after screening enters grater 5 again and grinds, fine grain gradating material 33 after gradating material after grinding will screen via fine screening machine 30 earlier ' the send into first road washing equipment 6, flow into the first road washing equipment 6 less than the fine grain gradating material 33 of the second layer Screening Network channel of then flowing through downstream, this kind washing equipment 6 can be waterwheel, centrifugal washing equipment, the water logging bubble equipment or other washing equipments that do not have machinery, present embodiment is that the employing waterwheel is a washing equipment, and the first road washing equipment (waterwheel) 6 of present embodiment mainly comprises a tank and ladles out the sand runner, and the aforementioned gradating material that is lower than second layer Screening Network through screening flushing particle diameter enters the time of staying that contacts with water that has approximately in the first road washing equipment (being waterwheel) 6 more than 2 minutes, be beneficial to harmful substance stripping leachable in the gradating material, ladled out and inserted the gradating material that soaks in the tank in the runner via the sand runner of ladling out of continuous action again, this moment also again nationality go out by the pipeline swash of wave in the channel and bring the gradating material in the runner into the second road washing equipment (being waterwheel) 7 by another flushing water source, gradating material still has the time of staying that contacts with water more than 2 minutes in the second road washing equipment (being waterwheel) 7, via the sand runner of ladling out of continuous action the gradating material that soaks in the tank has been ladled out and inserted in the dewaterer 8 again, gradating material after the dehydration then is through washing, deodorizing after screening and processings such as fragmentation and good finished product 331 with preferable homogenieity and stability be for utilization again, and can be widely used in the various engineering.
Moreover, aforementioned bottom slag incineration washing procedure, wherein the weight ratio of gradating material of the first road washing equipment, the 6 employed water yields and desire washing be 0.6 or more for preferable, and wherein the weight ratio of the gradating material washed of the second road washing equipment, the 7 employed water yields and desire is to be preferable more than 0.6.
Other is the person, aforementioned bottom slag incineration washing procedure, be to add stabilizing agent in the water-washing process of the water-washing process of the first road washing equipment 6 and the second road washing equipment 7 wherein, the heavy metal of the finished product after the order washing can't ooze out and promote its stability, and this kind stabilizing agent then can adopt the low salt compounds of heavy metal solubility such as sulfide, phosphoric acid salt, hydroxide, organic polymer, inorganic polymer.
Please be the water analysis table of the waste discharge of aforementioned first embodiment with reference to figure 5 in addition, wherein if the weight ratio of the gradating material of the first employed water yield of road washing equipment (6) and desire washing is 1, then clean the back discharge waste water after testing the pH value be 12.2, and chlorine (Cl) is 1200mg/l, and plumbous (Pb) is 2.5mg/l; If weight ratio changes 2 into, then pH value is 11.3, chlorine is 800mg/l, the plumbous 1.5mg/l of being; Fig. 6 is the property list of the gradating material finished product of the aforementioned first embodiment water wash procedures gained in addition, wherein if the weight ratio of the gradating material of the first road washing equipment, the 6 employed water yields and desire washing is 1, then the chlorine matter of washing back gradating material finished product is 0.11%, U.S. TCLP regulation stripping lead is 1.87mg/l, if weight ratio changes 2 into, then the chloride matter of gradating material finished product is 0.88%, and this is without the chloride matter 0.72% of gradating material (raw material) of water wash procedures, leaded 5.06mg/l, and gap is very big.
Please be the water analysis table of the waste discharge of aforementioned the 3rd embodiment with reference to figure 7 in addition, wherein if the weight ratio of the gradating material of the first road washing equipment, the 6 employed water yields and desire washing is 1, then clean the back discharge waste water after testing the pH value be 12.2, and chlorine (Cl) is 1200mg/l, plumbous (Pb) is 2.5mg/l, if weight ratio changes 2 into, then pH value is 11.3, chlorine is 800mg/l, the plumbous 1.5mg/l of being; If through the first road washing equipment and the second road washing equipment 7 and weight ratio is 2 o'clock, then discharge pH value of waste water and be 11.1, chlorine is 700mg/l, plumbously be 1.1mg/l, if weight ratio is 3, then Ph value is 11.1, chlorine is that 600mg/l, lead are 0.6mg/l; Fig. 8 is the property list of the gradating material finished product of aforementioned the 3rd embodiment water wash procedures gained in addition, wherein if the weight ratio of the gradating material of the first employed water yield of road washing equipment (6) and desire washing is 1, then the chlorine matter of washing back gradating material finished product is 0.11%, U.S. TCLP regulation stripping lead is 1.87mg/l, if weight ratio changes 2 into, then the gradating material finished product is chloride is 0.88%; If through the first road washing equipment 6 and the second road washing equipment 7 and cleaning water yield weight ratio is 2, then the chloride matter of finished product is 0.05%, U.S. TCLP stripping is plumbous is 0.01mg/l, if cleaning water yield weight ratio is 3, then chloride matter is 0.04% in the finished product, the TCLP stripping is plumbous is 0.10mg/l, more remarkable effect.
In sum, bottom slag incineration washing procedure of the present invention can be with the stink removal of gradating material and with leachable harmful substance stripping, make the gradating material homogeneous and stablely utilize again more after handling through water wash procedures for safety, and can be widely used in the various engineering, and meet the environmental friendly principle of resource recycling.
Claims (15)
1. bottom slag incineration washing procedure, it is characterized in that, send gradating material to feed hopper, the gradating material that feed hopper is provided and delivered out then is conveyed into screening machine, the screen cloth of screening facility multilayer different-grain diameter, the screen cloth of each layer of mat in the vibrations process and isolate the gradating material of different-grain diameter, the particle diameter that after screening, gradating material is divided into several different range, wherein particle diameter is coarse grained gradating material, this partly can utilize according to particle properties again, middle grain-size grade batching then is delivered to magnetic separator earlier, with the ferrous metal separating substances, gradating material after magnetic separation enters grater again and grinds, gradating material after grinding is carried and is sent the screening machine processing back to, the gradating material of fine grain is then sent in the first road washing equipment, and has time of staying that contacts with water more than 2 minutes at least, be beneficial to harmful substance stripping leachable in the gradating material, and aforementioned gradating material after handling through the first road washing equipment can insert after the dewaterer processed be output deodorizing and tool homogenieity with the finished product of stability for utilizing again.
2. bottom slag incineration washing procedure, it is characterized in that, send gradating material to feed hopper, the gradating material that feed hopper is provided and delivered out then is conveyed into screening machine, the screen cloth of screening facility multilayer different-grain diameter, the screen cloth of each layer of mat in the vibrations process and isolate the gradating material of different-grain diameter, the particle diameter that after screening, gradating material is divided into several different range, wherein particle diameter is coarse grained gradating material, this partly can utilize according to particle properties again, the fine grain gradating material is then directly sent into the first road washing equipment, then be delivered to magnetic separator earlier as for middle grain-size grade batching, with the ferrous metal separating substances, gradating material after magnetic separation enters grater again and grinds, gradating material after grinding is sent into the first road washing equipment after sifting out the fine grain gradating material via the fine screening machine again, and the aforementioned fine grain gradating material of sending in the first road washing equipment has the time of staying that contacts with water more than 2 minutes at least, be beneficial to harmful substance stripping leachable in the gradating material, and aforementioned gradating material after handling through the first road washing equipment can insert after the dewaterer processed be output deodorizing and tool homogenieity with the finished product of stability for utilizing again.
3. bottom slag incineration washing procedure, it is characterized in that, send gradating material to feed hopper, the gradating material that feed hopper is provided and delivered out then is conveyed into screening machine, the screen cloth of screening facility multilayer different-grain diameter, the screen cloth of each layer of mat in the vibrations process and isolate the gradating material of different-grain diameter, the particle diameter that after screening, gradating material is divided into several different range, wherein particle diameter is coarse grained gradating material, this partly can utilize according to particle properties again, middle grain-size grade batching then is delivered to magnetic separator earlier, with the ferrous metal separating substances, gradating material after magnetic separation enters grater again and grinds, gradating material after grinding is carried and is sent the screening machine processing back to, the gradating material of fine grain is then sent in the first road washing equipment, and has time of staying that contacts with water more than 2 minutes at least, be beneficial to harmful substance stripping leachable in the gradating material, and aforementioned gradating material after handling through the first road washing equipment can be sent in the second road washing equipment again, gradating material still has the time of staying that contacts with water more than 2 minutes at least in the second road washing equipment, insert again after the dewaterer processed be output deodorizing and tool homogenieity with the finished product of stability for utilizing again.
4. bottom slag incineration washing procedure, it is characterized in that, send gradating material to feed hopper, the gradating material that feed hopper is provided and delivered out then is conveyed into screening machine, the screen cloth of screening facility multilayer different-grain diameter, the screen cloth of each layer of nationality in the vibrations process and isolate the gradating material of different-grain diameter, the particle diameter that after screening, gradating material is divided into several different range, wherein particle diameter is coarse grained gradating material, this partly can utilize according to particle properties again, the fine grain gradating material is then directly sent into the first road washing equipment, then be delivered to magnetic separator earlier as for middle grain-size grade batching, with the ferrous metal separating substances, gradating material after magnetic separation enters grater again and grinds, gradating material after grinding is also sent into the first road washing equipment after sifting out the fine grain gradating material via the fine screening machine again, and the aforementioned fine grain gradating material of sending in the first road washing equipment has the time of staying that contacts with water more than 2 minutes at least, be beneficial to harmful substance stripping leachable in the gradating material, and aforementioned gradating material after handling through the first road washing equipment can be sent in the second road washing equipment again, gradating material still has the time of staying that contacts with water more than 2 minutes at least in the second road washing equipment, insert again after the dewaterer processed be output deodorizing and tool homogenieity with the finished product of stability for utilizing again.
5. according to each described bottom slag incineration washing procedure in the claim 1 to 4, it is characterized in that the screening process system of screening machine can utilize the bath source with the high pressure water washing gradating material simultaneously.
6. according to each described bottom slag incineration washing procedure in the claim 1 to 4, it is characterized in that the first road washing equipment is to have the waterwheel of ladling out sand runner and tank.
7. according to each described bottom slag incineration washing procedure in the claim 1 to 4, it is characterized in that the first road washing equipment is centrifugal washing equipment.
8. according to each described bottom slag incineration washing procedure in the claim 1 to 4, it is characterized in that the first road washing equipment is the water logging bubble equipment that does not have machinery.
9. according to each described bottom slag incineration washing procedure in the claim 1 to 4, it is characterized in that the weight ratio of the gradating material of the employed water yield of the first road washing equipment and desire washing is more than 0.6.
10. according to each described bottom slag incineration washing procedure in the claim 1 to 4, it is characterized in that, be to add stabilizing agent in the water-washing process of the first road washing equipment, the heavy metal of the finished product after the order washing can't ooze out and promote its stability, and this kind stabilizing agent then can adopt the low salt compounds of heavy metal solubility.
11., it is characterized in that the second road washing equipment is to have the waterwheel of ladling out sand runner and tank according to each described bottom slag incineration washing procedure in the claim 3 to 4.
12., it is characterized in that the second road washing equipment is centrifugal washing equipment according to each described bottom slag incineration washing procedure in the claim 3 to 4.
13., it is characterized in that the second road washing equipment is the water logging bubble equipment that does not have machinery according to each described bottom slag incineration washing procedure in the claim 3 to 4.
14., it is characterized in that the weight ratio of the gradating material of the employed water yield of the first road washing equipment and desire washing is more than 0.6 according to each described bottom slag incineration washing procedure in the claim 3 to 4.
15. according to each described bottom slag incineration washing procedure in the claim 3 to 4, it is characterized in that, be to add stabilizing agent in the water-washing process of the second road washing equipment, the heavy metal of the finished product after the order washing can't ooze out and promote its stability, and this kind stabilizing agent then can adopt the low salt compounds of heavy metal solubility.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3223689C1 (en) * | 1982-06-25 | 1983-09-29 | Günther 5628 Heiligenhaus Unger | Process and apparatus for the recovery of metallic parts from combustion and/or pyrolysis residues, especially from rubbish incineration |
| US5308368A (en) * | 1990-05-15 | 1994-05-03 | Duos Engineering, Inc. | System for separation of materials using suction air power |
| CN1029459C (en) * | 1990-06-09 | 1995-08-09 | 冶金工业部马鞍山钢铁设计研究院 | Process for dressing iron from low-rank iron pyrites roasted slag |
| US5890663A (en) * | 1997-09-12 | 1999-04-06 | Duos Engineering (Usa), Inc. | Process for recovering perrous values from municipal solid waste |
| US5906321A (en) * | 1997-02-27 | 1999-05-25 | Duos Engineering (Usa), Inc. | Non-ferrous metals cleaning system |
| US5992776A (en) * | 1996-07-26 | 1999-11-30 | Duosengineering (Usa), Inc. | Process for processing ash |
-
2004
- 2004-04-16 CN CNB200410035029XA patent/CN100352553C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3223689C1 (en) * | 1982-06-25 | 1983-09-29 | Günther 5628 Heiligenhaus Unger | Process and apparatus for the recovery of metallic parts from combustion and/or pyrolysis residues, especially from rubbish incineration |
| US5308368A (en) * | 1990-05-15 | 1994-05-03 | Duos Engineering, Inc. | System for separation of materials using suction air power |
| CN1029459C (en) * | 1990-06-09 | 1995-08-09 | 冶金工业部马鞍山钢铁设计研究院 | Process for dressing iron from low-rank iron pyrites roasted slag |
| US5992776A (en) * | 1996-07-26 | 1999-11-30 | Duosengineering (Usa), Inc. | Process for processing ash |
| US5906321A (en) * | 1997-02-27 | 1999-05-25 | Duos Engineering (Usa), Inc. | Non-ferrous metals cleaning system |
| US5890663A (en) * | 1997-09-12 | 1999-04-06 | Duos Engineering (Usa), Inc. | Process for recovering perrous values from municipal solid waste |
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| Publication number | Publication date |
|---|---|
| CN1683084A (en) | 2005-10-19 |
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