CN104083940B - A kind of back cleaning system for iron ore concentrate slurry dehydration system - Google Patents
A kind of back cleaning system for iron ore concentrate slurry dehydration system Download PDFInfo
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- CN104083940B CN104083940B CN201410327831.XA CN201410327831A CN104083940B CN 104083940 B CN104083940 B CN 104083940B CN 201410327831 A CN201410327831 A CN 201410327831A CN 104083940 B CN104083940 B CN 104083940B
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Abstract
The invention discloses a kind of back cleaning system for iron ore concentrate slurry dehydration system, comprise the first concentrated pipeline, instead clean total pipeline, the first anti-branch pipe(tube), second that cleans instead cleans branch pipe(tube), the first underflow pump, instead clean main valve, the first anti-cleaning valve and the second anti-cleaning valve; Wherein, the first underflow pump by the first concentrated pipeline respectively with concentration basin bottom discharge bucket and distribute bucket and be connected; Anti-cleaning main valve is arranged on anti-cleaning total pipeline; First anti-cleaning branch pipe(tube) pipeline concentrated with first and instead clean total pipeline and be connected respectively, the first anti-cleaning valve is arranged on first and instead cleans on branch pipe(tube); Second anti-cleaning branch pipe(tube) pipeline concentrated with first and instead clean total pipeline and be connected respectively, the second anti-cleaning valve is arranged on second and instead cleans on branch pipe(tube).Back cleaning system of the present invention is used in the dewatering system of iron ore concentrate slurry, can the underflow pump pipeline of Quick dredging blocking, resumes production as early as possible, can also adjustable ore pulp underflow density, reduces the maintenance rate of equipment.
Description
Technical field
The present invention relates to the dehydration technique of solid material, particularly relate to a kind of for the back cleaning system in pulp dewatering process.
Background technology
When for solid material, particularly the ore pulp such as iron ore concentrate dewaters, the ore pulp that concentration is high is convenient to dehydration, good in economic efficiency; For the ore pulp that concentration is low, because operating cost is high, efficiency is low, uneconomical, first need put it into concentration basin and carries out concentrated and then dewater, but concentrated after ore pulp high due to concentration, underflow pump pipeline can be blocked again, have a strong impact on production.
Summary of the invention
For this reason, the invention provides a kind of back cleaning system of dewatering system for iron ore concentrate slurry dehydration system of the new iron ore concentrate at least partially that at least can solve the problem.
The invention provides a kind of back cleaning system for iron ore concentrate slurry dehydration system, comprise the first concentrated pipeline, instead clean total pipeline, the first anti-branch pipe(tube), second that cleans instead cleans branch pipe(tube), the first underflow pump, instead clean main valve, the first anti-cleaning valve and the second anti-cleaning valve; Wherein,
Described first underflow pump by the described first concentrated pipeline respectively with concentration basin bottom discharge bucket and distributes bucket and be connected, for the iron ore concentrate slurry after concentrated is delivered in distribution bucket;
The first concentration basin outlet at bottom valve and the first underflow pump outlet valve is provided with between described first underflow pump and described concentration basin bottom discharge bucket;
Described anti-cleaning main valve is arranged on described anti-cleaning total pipeline;
Described first anti-cleaning branch pipe(tube) respectively pipeline concentrated with described first is connected with described anti-cleaning total pipeline, and described first anti-cleaning valve is arranged on described first and instead cleans on branch pipe(tube);
Described second anti-cleaning branch pipe(tube) respectively pipeline concentrated with described first is connected with described anti-cleaning total pipeline, and described second anti-cleaning valve is arranged on described second and instead cleans on branch pipe(tube);
Described first instead cleans the junction of branch pipe(tube) and the described first concentrated pipeline between described concentration basin bottom discharge bucket and described first concentration basin outlet at bottom valve;
Described second instead cleans the junction of branch pipe(tube) and the described first concentrated pipeline between described first concentration basin outlet at bottom valve and described first underflow pump outlet valve.
Alternatively, according to back cleaning system of the present invention, comprise the second concentrated pipeline, the 3rd further and instead clean that branch pipe(tube), the 4th instead cleans branch pipe(tube), the 5th anti-branch pipe(tube), the 6th that cleans instead cleans branch pipe(tube), the 3rd anti-cleaning valve and the 4th anti-cleaning valve, wherein,
Described second underflow pump by the described second concentrated pipeline respectively with concentration basin bottom discharge bucket and distributes bucket and be connected, for the iron ore concentrate slurry after concentrated is delivered in distribution bucket;
The second concentration basin outlet at bottom valve and the second underflow pump outlet valve is provided with between described second underflow pump and described concentration basin bottom discharge bucket;
Described 3rd anti-cleaning branch pipe(tube) instead cleans branch pipe(tube) with described anti-cleaning total pipeline and the described 4th respectively and is connected;
Described 5th anti-cleaning branch pipe(tube) respectively pipeline concentrated with described second and the described 4th instead clean branch pipe(tube) and is connected, described 3rd anti-cleaning valve is arranged on the described 5th and instead cleans on branch pipe(tube);
Described 6th anti-cleaning branch pipe(tube) respectively pipeline concentrated with described second and the described 4th instead clean branch pipe(tube) and is connected, described 4th anti-cleaning valve is arranged on the described 6th and instead cleans on branch pipe(tube);
Described 5th instead cleans the junction of branch pipe(tube) and the described second concentrated pipeline between described concentration basin bottom discharge bucket and described second concentration basin outlet at bottom valve;
Described 6th instead cleans the junction of branch pipe(tube) and the described second concentrated pipeline between described second concentration basin outlet at bottom valve and described second underflow pump outlet valve.
Alternatively, according to back cleaning system of the present invention, described iron ore concentrate slurry dehydration system comprises distributes bucket, ceramic filter, elevated tank, concentration basin, cesspool, technique sedimentation basin, the first collecting pit, gravity filter and clear water reserviors, and described concentration basin bottom discharge bucket is located at bottom described concentration basin; Wherein,
Described distribution bucket and ore pulp be responsible for be connected with receive ore pulp be responsible in iron ore concentrate slurry;
Described concentration basin and ore pulp be responsible for be connected with receive ore pulp be responsible in iron ore concentrate slurry and the iron ore concentrate slurry of low concentration is concentrated;
Described ceramic filter is connected to receive the iron ore concentrate slurry from distributing bucket with described distribution bucket;
Described cesspool is connected to receive the sewage from concentration basin and ceramic filter with described ceramic filter with described concentration basin respectively;
Described cesspool is also connected the sewage transport in cesspool to be precipitated to technique sedimentation basin by sewage pump with described technique sedimentation basin;
Described technique sedimentation basin is connected to be delivered in the first collecting pit by the supernatant liquor obtained after precipitating in technique sedimentation basin with described first collecting pit;
Described first collecting pit is connected to be purified further by described supernatant liquor by clarified water pump with described gravity filter; And described first collecting pit is connected with described anti-cleaning total pipeline by clarified water pump, thinks that the first underflow pump and concentration basin provide anti-water for cleaning;
Described gravity filter is connected to be delivered in clear water reserviors by the clear water after purifying with described clear water reserviors;
Described clear water reserviors to be connected being delivered in elevated tank by the clear water after purifying by clarified water pump with described elevated tank;
Described elevated tank is connected with described ceramic filter, for the filter of cleaning ceramic filter provides clear water.
Alternatively, back cleaning system of the present invention, described clear water reserviors are connected with described ceramic filter by clarified water pump, for the vavuum pump in cooling ceramic filter provides clear water.
Alternatively, according to back cleaning system of the present invention, described dewatering system comprises Gan Dui pond, the second collecting pit further, and wherein, described Gan Dui pond is connected to receive from the suspended impurity in gravity filter with described gravity filter and precipitates suspended impurity; Described second collecting pit is connected to receive the supernatant liquor from Gan Dui pond with described Gan Dui pond; And described second collecting pit is connected to be delivered in the first collecting pit by described supernatant liquor by clarified water pump with described first collecting pit.
Alternatively, according to back cleaning system of the present invention, described dewatering system comprises Buffer Pool further, described Buffer Pool is connected with described concentration basin with described ceramic filter respectively, concentrate for receiving the Low Concentration Iron concentrate slurry that cannot process in ceramic filter and being delivered in concentration basin by this Low Concentration Iron concentrate slurry, the iron ore concentrate slurry after concentrated is delivered in Buffer Pool through underflow pump again.
Back cleaning system of the present invention is used in the dewatering system of iron ore concentrate slurry, can the underflow pump pipeline of Quick dredging blocking, resumes production as early as possible, can also adjustable ore pulp underflow density, reduces the maintenance rate of equipment.
Accompanying drawing explanation
By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred embodiment, and does not think limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of back cleaning system of the present invention;
Fig. 2 is the structural representation of dewatering system of the present invention; And
Fig. 3 is the structural representation of technique sedimentation basin in dewatering system of the present invention; And
Fig. 4 is the top view of Fig. 3.
Wherein, in accompanying drawing, each description of symbols is as follows:
1-first concentration basin outlet at bottom valve; The anti-cleaning valve of 2-first; The anti-cleaning valve of 3-second; 4-first concentration basin outlet at bottom valve; The anti-cleaning valve of 5-the 3rd; The anti-cleaning valve of 6-the 4th; 7-first underflow pump outlet valve; 8-second underflow pump outlet valve; 9-is counter cleans main valve; 10-first underflow pump; 11-second underflow pump; 12-concentration basin bottom discharge bucket; 13-distributes bucket; 14-first concentrates pipeline; 15-is counter cleans total pipeline; 16-first is counter cleans branch pipe(tube); 17-second is counter cleans branch pipe(tube); 18-second concentrates pipeline; 19-the 3rd is counter cleans branch pipe(tube); 20-the 4th is counter cleans branch pipe(tube); 21-the 5th is counter cleans branch pipe(tube); 22-the 6th is counter cleans branch pipe(tube); 23-ceramic filter; 24-elevated tank; 25-concentration basin; 26-cesspool; 27-technique sedimentation basin; 28-first collecting pit; 29-gravity filter; 30-clear water reserviors; 31-ore pulp is responsible for; 32-sewage pump; 33-clarified water pump; 34-Gan Dui pond; 35-second collecting pit; 36-Buffer Pool; 37-first valve; 38-second valve; 39-the 3rd valve; 40-the 4th valve; 41-outer water tube road; 271-first partition wall; 272-second partition wall; 273-first settling zone; 274-second settling zone; 275-the 3rd settling zone.
Detailed description of the invention
The invention provides many applicable creative concepts, this creative concept can be reflected in a large number of in concrete context.The specific embodiment described in following embodiments of the present invention only as the exemplary illustration of the specific embodiment of the present invention, and does not form limitation of the scope of the invention.
Below in conjunction with accompanying drawing and concrete embodiment, the invention will be further described.
The invention provides a kind of for the back cleaning system in iron ore concentrate dewatering system, this back cleaning system can prevent underflow pump pipeline from blocking occurring and affects dewatering system and normally work.
Fig. 1 shows the structural representation of back cleaning system of the present invention.As shown in Figure 1, this back cleaning system being used for iron ore concentrate slurry dehydration system comprises the first concentrated pipeline 14, anti-cleaning total pipeline 15, first anti-cleaning branch pipe(tube) 16, second anti-cleaning branch pipe(tube) 17, first underflow pump 10, anti-cleaning main valve 9, first anti-cleaning valve 2 and the second anti-cleaning valve 3; Wherein, described first underflow pump 10 by the described first concentrated pipeline 14 respectively with concentration basin bottom discharge bucket 12 and distribute bucket 13 and be connected, between described first underflow pump 10 and described concentration basin bottom discharge bucket 12, be provided with the first concentration basin outlet at bottom valve 1 and the first underflow pump outlet valve 7, described first underflow pump outlet valve 7 generally keeps the state often opened.Under normal operating conditions, after iron ore concentrate slurry completes and concentrates in concentration basin, open described first concentration basin outlet at bottom valve 1, by the first underflow pump 10 iron ore concentrate slurry after concentrated in concentration basin is delivered to through the first concentrated pipeline 15 and distributes in bucket 13, then ore pulp is dispensed in each ceramic filter dewaters through distributing bucket 13.
Described anti-cleaning main valve 9 is arranged on described anti-pipe blow-through 15, for controlling the water for cleaning entering anti-cleaning total pipeline; Described first anti-cleaning branch pipe(tube) 16 respectively pipeline 14 concentrated with described first is connected with described anti-cleaning total pipeline 15, and described first anti-cleaning valve 2 is arranged on described first and instead cleans on branch pipe(tube) 16; Described second anti-cleaning branch pipe(tube) 17 respectively pipeline 14 concentrated with described first is connected with described anti-cleaning total pipeline 15, and described second anti-cleaning valve 3 is arranged on described second and instead cleans on branch pipe(tube) 17; Described first instead cleans the junction of branch pipe(tube) 16 and the described first concentrated pipeline 14 between described concentration basin bottom discharge bucket 12 and described first concentration basin outlet at bottom valve 1; Described second instead cleans the junction of branch pipe(tube) 17 and the described first concentrated pipeline 14 between described first concentration basin outlet at bottom valve 1 and described first underflow pump outlet valve 7.Described anti-cleaning main valve 9 generally keeps normally open.
When blocking occurs the first underflow pump pipeline, first close described first concentration basin outlet at bottom valve 1, stop iron ore concentrate slurry entering the first concentrated pipeline 14 further, then open the second anti-cleaning valve 3 and keep the first underflow pump 10 to be in running status.Now, the water for cleaning in anti-cleaning total pipeline 15 enters the described second anti-cleaning branch pipe(tube) 17 enter the first concentrated pipeline through described second anti-cleaning valve 3, instead to clean it.Along with pipeline is cleaned unimpeded, the iron ore concentrate slurry deposited in the first concentrated pipeline 14 is delivered to by the first underflow pump 10 and distributes in bucket 13.When there is ore pulp in distribution bucket, proceeding anti-cleaning about 3 minutes, closing the first underflow pump 10 and the second anti-cleaning valve 3.And then the first anti-cleaning valve 2 is opened, water for cleaning in anti-cleaning total pipeline 15 enters described first and instead cleans branch pipe(tube) 16 and enter concentration basin after described first anti-cleaning valve 2 enters the first concentrated pipeline 14, and this part rinse water can be cleaned concentration basin is counter.When concentration basin has a large amount of water upwards to gush, namely reach the object of anti-cleaning, now close the first anti-cleaning valve 2.By arranging this anti-detergent line, not only can to concentration basin and the first underflow pump pipeline be counter cleans, prevent pipeline blockage, can also regulate pulp density.If iron ore concentrate slurry concentration higher than 65% time, opening any in the first anti-cleaning valve 2, second anti-cleaning valve 3, by introducing rinse water, just can reach the object of reduction pulp density.
In order to improve the efficiency of dewatering system, two underflow pumps can also be set and work simultaneously, for carrying the iron ore concentrate slurry after concentrating to distributing in bucket.As shown in fig. 1, the second underflow pump 11 and the second concentrated pipeline 18 is also provided with between described concentration basin bottom discharge bucket 12 and described distribution bucket 13, between described second underflow pump 11 and described concentration basin bottom discharge bucket 12, be provided with the second concentration basin outlet at bottom valve 4 and the second underflow pump outlet valve 8, described second underflow pump outlet valve 8 generally keeps the state often opened.Same, anti-detergent line is also provided with for this second underflow pump pipeline.Particularly, this anti-detergent line comprises the 3rd, and anti-cleaning branch pipe(tube) 19, the 4th anti-cleaning branch pipe(tube) 20, the 5th anti-cleaning branch pipe(tube) 21, the 6th instead clean branch pipe(tube) 22, the 3rd anti-cleaning valve 5 and the 4th anti-cleaning valve 6, wherein, the described 3rd anti-cleaning branch pipe(tube) 19 instead clean branch pipe(tube) 20 with described anti-cleaning total pipeline 15 and the described 4th respectively and be connected; Described 5th anti-cleaning branch pipe(tube) 21 respectively pipeline 18 concentrated with described second and the described 4th instead clean branch pipe(tube) 20 and is connected, described 3rd anti-cleaning valve 5 is arranged on the described 5th and instead cleans on branch pipe(tube) 21; Described 6th anti-cleaning branch pipe(tube) 22 respectively pipeline 18 concentrated with described second and the described 4th instead clean branch pipe(tube) 20 and is connected, described 4th anti-cleaning valve 6 is arranged on the described 6th and instead cleans on branch pipe(tube) 22; Described 5th instead cleans the junction of branch pipe(tube) 21 and the described second concentrated pipeline 18 between described concentration basin bottom discharge bucket 12 and described second concentration basin outlet at bottom valve 4; Described 6th instead cleans the junction of branch pipe(tube) 22 and the described second concentrated pipeline 18 between described second concentration basin outlet at bottom valve 8 and described second underflow pump outlet valve 4.
When blocking occurs the second underflow pump pipeline, first close described second concentration basin outlet at bottom valve 4, stop iron ore concentrate slurry entering the second concentrated pipeline further, then open the 4th anti-cleaning valve 6 and keep the second underflow pump 11 to be in running status.Now, the water for cleaning in anti-cleaning total pipeline 15 enters the described 3rd anti-cleaning branch pipe(tube) 19, the 4th anti-cleaning branch pipe(tube) 20 and the 6th anti-cleaning branch pipe(tube) 22 enter the second concentrated pipeline 18 through described 4th anti-cleaning valve 6 successively, instead to clean it.Along with pipeline is cleaned unimpeded, the iron ore concentrate slurry deposited in the second concentrated pipeline 18 is delivered to by the second underflow pump 11 and distributes in bucket 13.When there is ore pulp in distribution bucket, proceeding anti-cleaning about 3 minutes, closing the second underflow pump 11 and the 4th anti-cleaning valve 6.And then the 3rd anti-cleaning valve 5 is opened, water for cleaning in anti-cleaning total pipeline 15 enters the described 3rd anti-cleaning branch pipe(tube) 19 successively, the 4th anti-branch pipe(tube) 20 and the 5th that cleans instead cleans branch pipe(tube) 21 and enter concentration basin after described 3rd anti-cleaning valve 5 enters the second concentrated pipeline 18, and this part rinse water can be cleaned concentration basin is counter.When concentration basin has a large amount of water upwards to gush, namely reach the object of anti-cleaning, now close the 3rd anti-cleaning valve 5.
Above-mentioned back cleaning system is applied to the dewatering system of iron ore concentrate slurry, can prevents underflow pump pipeline from blocking occurring or carries out flushing fast when there is blocking to make pipeline unimpeded, ensure that the normal operation of dewatering system.Particularly, as shown in Figure 2, described iron ore concentrate slurry dehydration system comprises and distributes bucket 13, ceramic filter 23, elevated tank 24, concentration basin 25, cesspool 26, technique sedimentation basin 27, first collecting pit 28, gravity filter 29 and clear water reserviors 30.Wherein, described distribution bucket 13 and ore pulp are responsible for 31 and are connected and are responsible for iron ore concentrate slurry in 31 to receive ore pulp; Described concentration basin 25 and ore pulp are responsible for 31 and are connected and are responsible for the iron ore concentrate slurry in 31 to receive ore pulp and concentrate the iron ore concentrate slurry of low concentration, between described ore pulp supervisor 31 and described concentration basin 4, be provided with the first valve 37, the iron ore concentrate slurry after concentrated is by underflow pump (the first underflow pump 10 is only shown in Fig. 2) to described distribution bucket 1.The second valve 38 is provided with between described concentration basin 25 and described distribution bucket 13; Described ceramic filter 23 is connected to receive the iron ore concentrate slurry from distributing bucket 13 with described distribution bucket 13.If the iron ore concentrate slurry concentration in ore pulp supervisor 31 meets dehydration when requiring, iron ore concentrate slurry directly enters and distributes bucket 13, then is dispensed in each ceramic filter 23 hopper by distribution bucket 13, is dewatered to ore pulp by ceramic filter; If the iron ore concentrate slurry concentration lower (lower than 50%) in ore pulp supervisor 31, is directly delivered in ceramic filter and is filtered, then can reduce ceramic filter groove bulk concentration, affect output.For avoiding occurring this kind of situation, pulp density cannot to meet lower than 50% dehydration require time, open the first valve 37, iron ore concentrate slurry is delivered in concentration basin 25 and concentrates, when the pulp density after concentrating reaches more than 50%, open the second valve 38, by the first underflow pump 10 iron ore concentrate slurry after concentrated is delivered to and distributes in bucket 13, carry out subsequent operation.By the adjustment of concentration basin to pulp density, when ore pulp characteristic changes, production technology can be adjusted in time, both ensure that product quality, in turn ensure that output.
Iron ore concentrate slurry in concentration basin 25 in concentration process and ceramic filter 23 in the process that ore pulp is dewatered, all produce sewage, as shown in Figure 2, described cesspool 26 is connected to collect from the sewage in concentration basin 25 and ceramic filter 23 with described concentration basin 25 with described ceramic filter 23 respectively.Then, by sewage pump 32 by the sewage transport in described cesspool 26 in described technique sedimentation basin 27.Sewage precipitates in technique sedimentation basin 27, obtains supernatant liquor and is precipitated to the solid impurity at the bottom of pond.Be provided with connecting pipeline between described technique sedimentation basin 27 with described first collecting pit 28 to realize being communicated with, by this pipeline, the supernatant liquor obtained after precipitation in technique sedimentation basin 27 be delivered in the first collecting pit 28.Also containing certain solid impurity in clear liquid in first collecting pit 28, also need to be further processed it, the demand of industrial water can be reached.Therefore, by clarified water pump 33 clear liquid in described first collecting pit 28 is delivered in described gravity filter 29 and purifies further, the first collecting pit 28 be also provided with pipeline between gravity filter 29 to realize being communicated with.After gravity filter 29 completes purification, the clear water after purification is delivered in the clear water reserviors 30 be connected with gravity filter 29 by pipeline.After clear water assembled by clear water reserviors 30, by clarified water pump 33, clear water is delivered in described elevated tank 24.Described elevated tank 24 is connected with described ceramic filter 23 by pipeline, can provide water for cleaning for the filter of cleaning ceramic filter 23.
Improve as of the present invention another, described first collecting pit 28 is connected with described anti-cleaning total pipeline 15 by clarified water pump 33, using the anti-water for cleaning of the clear liquid in the first collecting pit 28 as the first underflow pump 10 and concentration basin 25.By utilizing the clear liquid in the first collecting pit as the use water of back cleaning system, without the need to quoting external production water, reduce production cost.
For realizing the efficiency utilization of water body in water circulation utilization system, see Fig. 2, described clear water reserviors 30 are also connected with described ceramic filter 23 by clarified water pump, for clear water being wherein delivered in described ceramic filter 23, for the vavuum pump in ceramic filter provides cooling water, avoid vavuum pump Yin Wendu too high and cannot normally work.
After a period of operation, its shell can speckle with the spots such as such as ore pulp to ceramic filter, without cleaning it.Because the filter of ceramic filter all has certain requirement to water for cleaning and vavuum pump to cooling water, cause both this with water be through gravity filter purification after clear water, the water for cleaning of ceramic filter shell then requires lower, can utilize in the first collecting pit without purification clear liquid as water for cleaning.Therefore, as shown in Figure 2, described first collecting pit 28 is connected with pipeline and clarified water pump, by clarified water pump and pipeline, the clear liquid in the first collecting pit 28 is delivered on ceramic filter 23, its shell being cleaned, also without the need to adopting extra industrial water, providing cost savings.
In dewatering process in the past, after processing in gravity filter from the clear liquid of the first collecting pit, after the clear water obtained is delivered to clear water reserviors, suspended impurity then direct emission treatment.And containing sewage in this suspended impurity, directly this suspended impurity of discharge result in and occurs waste discharge, pollute environment, also reduce the utilization rate of water body.For this reason, invention has been improvement, at described dewatering system, Gan Dui pond 34 and the second collecting pit 35 are set, wherein, described Gan Dui pond 34 is connected to receive from the suspended impurity in gravity filter 29 with described gravity filter 29, the suspended impurity collected precipitates in Gan Dui pond, realizes Separation of Solid and Liquid; Described second collecting pit 35 is connected to receive from the supernatant liquor separated in Gan Dui pond 34 with described Gan Dui pond 34; Then, by clarified water pump 33, the clear liquid collected in second collecting pit 35 is delivered in the first collecting pit 28, carries out follow-up purified treatment.By arranging this Gan Dui pond and the second collecting pit, make do not have sewage discharge in whole dehydration, the water body utilization rate of whole water circulation system is also improved.
According to dewatering system of the present invention, described dewatering system is also provided with Buffer Pool 36, described Buffer Pool 36 is connected with described concentration basin 25 with described ceramic filter 23 respectively, concentrates for receiving the Low Concentration Iron concentrate slurry that cannot process in ceramic filter 23 and being delivered in concentration basin 25 by this Low Concentration Iron concentrate slurry.Connecting line between described concentration basin 25 and described Buffer Pool 36 is provided with the 3rd valve 39.Iron ore concentrate slurry after concentration basin concentrates, if its concentration reaches more than 50%, meets dehydration requirement, then open the second valve 38, closes the 3rd valve 39, by pulp conveying to distributing in bucket 13; If the pulp density after concentrated still lower than 50%, then closes the second valve 38, open the 3rd valve 39, ore pulp is circulated between concentration basin and Buffer Pool, until concentration reaches requirement.
In iron ore concentrate slurry dehydration system of the present invention, described technique sedimentation basin 27 is not only as the sedimentation basin of sewage disposal, can also distribution bucket, ceramic filter, concentration basin or other parts in dewatering system when breaking down and cause dehydration procedure to carry out, technique sedimentation basin can be used as the transfer pond of iron ore concentrate slurry.Specifically shown in Figure 2, described technique sedimentation basin 27 is provided with connecting pipe between being responsible for 31 with ore pulp makes both be connected, and connecting pipe is between provided with the 4th valve 40.Under dewatering system normal operating conditions, 4th valve is closed condition, when dewatering system breaks down, opens the 4th valve 40, by ore pulp supervisor 31 in iron ore concentrate slurry be delivered in accident sedimentation basin, thus prevent ore pulp be gathered in ore pulp supervisor in cannot discharge and cause pipeline blockage.Treat that the system failure is eliminated, ore pulp is wherein carried out normal dehydration procedure.
In dewatering system of the present invention, described technique sedimentation basin is arranged to have three independently settling zones.Fig. 3 and Fig. 4 shows the structural representation of technique sedimentation basin in dewatering system of the present invention.As shown in Figure 3 and Figure 4, the first partition wall 271 and the second partition wall 272 is provided with for described technique sedimentation basin is separated into the first settling zone 274, settling zone 273, second and the 3rd settling zone 275 in described technique sedimentation basin 27, wherein, the height of aspect ratio second partition wall 272 of described first partition wall 271 is high.Described first settling zone 274, settling zone 273, second and the 3rd settling zone 275 are by independently pipeline and water pump provide independent water supply for it.Between described first settling zone and the 3rd settling zone, be provided with connecting pipeline, and be provided with overfall on described second settling zone and the 3rd settling zone.By technique sedimentation basin is divided into three independently settling zones, fractional precipitation can be formed to sewage.After arriving technique sedimentation basin from the sewage of ceramic filter and concentration basin, first enter the first settling zone and carry out one-level precipitation, then sewage overflow to the second sedimentation basin carries out two-stage precipitation, then overflow is to the 3rd settling zone.Through twice precipitation of the first settling zone and the second settling zone, the sewage arriving the 3rd settling zone is clear state substantially, flows into the first collecting pit finally by the overfall on the 3rd sedimentation basin.After technique sedimentation basin uses the long period, alluvial at the bottom of pond has iron ore concentrate, need clear up sedimentation basin.By technique sedimentation basin is divided into three independently settling zones, can clear up separately each settling zone, and other two settling zones normally work, ensure the continuous operation of dewatering system.Particularly, when technique sedimentation basin is cleared up, can first clean the first settling zone, now the second settling zone and the 3rd settling zone still can normally use, sewage enters the second settling zone and precipitates, then overflow is to the 3rd settling zone, and the overfall finally by the 3rd settling zone arrives the first collecting pit.After completing the first settling zone cleaning, can clear up the second settling zone, now sewage enters the first settling zone and precipitates, and the pipeline of oettIed sewage through connection first settling zone and the 3rd settling zone arrives the 3rd settling zone, and the overfall finally by the 3rd settling zone arrives the first collecting pit.When carrying out the cleaning of the 3rd settling zone, sewage is through the precipitation of the first settling zone and the second settling zone, and the overfall finally by the second settling zone arrives the first collecting pit.When dewatering system breaks down, during the transfer pond of technique sedimentation basin as iron ore concentrate slurry, its cleanup step also can according to the cleaning step of above-mentioned three settling zones.
In dewatering system of the present invention, described gravity filter 29 is also connected with outer water tube road 41.This outer water tube road is set and has two effects: first, when industrial water is not enough, cannot meet dewatering system use water time, by this outer water tube road outside water is delivered in gravity filter and processes, supplement the deficiency of industrial water, guarantee system is normally run; Second, if dewatering system is in accident condition, then the cycling use of water in whole system is contaminated, cannot be for the production of, by this outer water tube road, outside water is delivered to process in gravity filter and obtains cleaning water, the operation of dewatering system can be replied as early as possible.
Back cleaning system of the present invention can solve the plugging problem of underflow pump pipeline in the dewatering system of iron ore concentrate slurry effectively, and the stable operation for whole system provides effective guarantee; But also can adjustable ore pulp underflow density.
It should be noted, the present invention will be described instead of limit the invention for above-described embodiment, and those skilled in the art can design alternative embodiment when not departing from the scope of claims.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and does not arrange element in the claims or step.Word first, second and third-class use do not represent any order, can be title by these word explanations.
Claims (5)
1. the back cleaning system for iron ore concentrate slurry dehydration system, comprise the first concentrated pipeline (14), instead clean total pipeline (15), the first anti-branch pipe(tube) (16), second that cleans instead cleans branch pipe(tube) (17), the first underflow pump (10), instead clean main valve (9), the first anti-cleaning valve (2) and the second anti-cleaning valve (3); Wherein,
Described first underflow pump (10) by the described first concentrated pipeline (14) respectively with concentration basin bottom discharge bucket (12) and distributes bucket (13) and be connected, for the iron ore concentrate slurry after concentrating is delivered in distribution bucket (13);
The first concentration basin outlet at bottom valve (1) and the first underflow pump outlet valve (7) is provided with between described first underflow pump (10) and described concentration basin bottom discharge bucket (12);
Described anti-cleaning main valve (9) is arranged on described anti-cleaning total pipeline (15);
Described first counter clean branch pipe(tube) (16) respectively pipeline (14) concentrated with described first be connected with described anti-cleaning total pipeline (15), described first anti-cleaning valve (2) is arranged on described first and instead cleans on branch pipe(tube) (16);
Described second counter clean branch pipe(tube) (17) respectively pipeline (14) concentrated with described first be connected with described anti-cleaning total pipeline (15), described second anti-cleaning valve (3) is arranged on described second and instead cleans on branch pipe(tube) (17);
The described first anti-junction cleaning branch pipe(tube) (16) and the described first concentrated pipeline (14) is positioned between described concentration basin bottom discharge bucket (12) and described first concentration basin outlet at bottom valve (1);
The described second anti-junction cleaning branch pipe(tube) (17) and the described first concentrated pipeline (14) is positioned between described first concentration basin outlet at bottom valve (1) and described first underflow pump outlet valve (7);
Described iron ore concentrate slurry dehydration system comprises distributes bucket (13), ceramic filter (23), elevated tank (24), concentration basin (25), cesspool (26), technique sedimentation basin (27), the first collecting pit (28), gravity filter (29) and clear water reserviors (30), and described concentration basin bottom discharge bucket (12) is located at described concentration basin (25) bottom; Wherein,
Described distribution bucket (13) is responsible for (31) and is connected and is responsible for iron ore concentrate slurry in (31) to receive ore pulp with ore pulp;
Described concentration basin (25) is responsible for (31) and is connected and is responsible for the iron ore concentrate slurry in (31) to receive ore pulp and concentrates the iron ore concentrate slurry of low concentration with ore pulp;
The first valve (37) is provided with between described ore pulp supervisor (31) and described concentration basin (25);
Described ceramic filter (23) is connected to receive the iron ore concentrate slurry from distributing bucket (13) with described distribution bucket (13);
Described cesspool (26) is connected to receive from the sewage in concentration basin (25) and ceramic filter (23) respectively with described ceramic filter (23) with described concentration basin (25);
Described cesspool (26) is also connected the sewage transport in cesspool (26) to be precipitated to technique sedimentation basin (27) by sewage pump (32) with described technique sedimentation basin (27);
Described technique sedimentation basin (27) is connected to be delivered in the first collecting pit (28) by the supernatant liquor obtained after middle for technique sedimentation basin (27) precipitation with described first collecting pit (28);
Described first collecting pit (28) is connected to be purified further by described supernatant liquor by the first clarified water pump with described gravity filter (29); And described first collecting pit (28) is connected with described anti-cleaning total pipeline (15) by the second clarified water pump, think that the first underflow pump (10) and concentration basin (25) provide anti-water for cleaning;
Described gravity filter (29) is connected to be delivered in clear water reserviors (30) by the clear water after purifying with described clear water reserviors (30);
Described clear water reserviors (30) to be connected being delivered in elevated tank (24) by the clear water after purifying by the 3rd clarified water pump with described elevated tank (24);
Described elevated tank (24) is connected with described ceramic filter (23), for the filter of cleaning ceramic filter (23) provides clear water;
Described dewatering system comprises Gan Dui pond (34), the second collecting pit (35) further, wherein,
Described Gan Dui pond (34) is connected receive from the suspended impurity in gravity filter (29) and precipitate suspended impurity with described gravity filter (29);
Described second collecting pit (35) is connected to receive from the supernatant liquor in Gan Dui pond (34) with described Gan Dui pond (34); And
Described second collecting pit (35) is connected to be delivered in the first collecting pit (28) by described supernatant liquor by the 4th clarified water pump with described first collecting pit (28).
2. back cleaning system according to claim 1, it is characterized in that: comprise the second concentrated pipeline (18), the 3rd further and instead clean that branch pipe(tube) (19), the 4th instead cleans branch pipe(tube) (20), the 5th anti-branch pipe(tube) (21), the 6th that cleans instead cleans branch pipe(tube) (22), the 3rd anti-cleaning valve (5) and the 4th anti-cleaning valve (6), wherein
Second underflow pump (11) by the described second concentrated pipeline (18) respectively with concentration basin bottom discharge bucket (12) and distributes bucket (13) and be connected, for the iron ore concentrate slurry after concentrating is delivered in distribution bucket;
The second concentration basin outlet at bottom valve (4) and the second underflow pump outlet valve (8) is provided with between the second underflow pump (11) and described concentration basin bottom discharge bucket (12);
The described 3rd anti-branch pipe(tube) (19) that cleans is connected with the described 4th anti-branch pipe(tube) (20) that cleans with described anti-cleaning total pipeline (15) respectively;
Described 5th counter clean branch pipe(tube) (21) respectively pipeline (18) concentrated with described second be connected with the described 4th anti-branch pipe(tube) (20) that cleans, described 3rd anti-cleaning valve (5) is arranged on the described 5th and instead cleans on branch pipe(tube) (21);
Described 6th counter clean branch pipe(tube) (22) respectively pipeline (18) concentrated with described second be connected with the described 4th anti-branch pipe(tube) (20) that cleans, described 4th anti-cleaning valve (6) is arranged on the described 6th and instead cleans on branch pipe(tube) (22);
The described 5th anti-junction cleaning branch pipe(tube) (21) and the described second concentrated pipeline (18) is positioned between described concentration basin bottom discharge bucket (12) and described second concentration basin outlet at bottom valve (4);
The described 6th anti-junction cleaning branch pipe(tube) (22) and the described second concentrated pipeline (18) is positioned between described second concentration basin outlet at bottom valve (4) and described second underflow pump outlet valve (8).
3. back cleaning system according to claim 1, it is characterized in that: described clear water reserviors (30) are connected with described ceramic filter (23) by the 5th clarified water pump, for the vavuum pump in cooling ceramic filter (23) provides clear water.
4. back cleaning system according to claim 1, it is characterized in that: described first collecting pit (28) is connected with described ceramic filter (23) by the 6th clarified water pump, for cleaning ceramic filter (23) shell provides clear water.
5. back cleaning system according to claim 1, it is characterized in that: described dewatering system comprises Buffer Pool (36) further, described Buffer Pool (36) is connected with described concentration basin (25) with described ceramic filter (23) respectively, concentrate for receiving the Low Concentration Iron concentrate slurry that cannot process in ceramic filter (23) and being delivered in concentration basin (25) by this Low Concentration Iron concentrate slurry, the iron ore concentrate slurry after concentrated is delivered in Buffer Pool (36) through the first underflow pump (10) again.
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| CN201410327831.XA CN104083940B (en) | 2014-07-10 | 2014-07-10 | A kind of back cleaning system for iron ore concentrate slurry dehydration system |
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| CN104445858A (en) * | 2015-01-09 | 2015-03-25 | 云南大红山管道有限公司 | System for removing blockage through tailing slurry |
| CN110604971B (en) * | 2019-10-18 | 2021-07-13 | 福建省步兴环保科技发展有限公司 | Sediment device is arranged before intelligent sewage pump |
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