CN113137856A

CN113137856A - A energy-saving drying device of drying kiln for wet ore dehydration

Info

Publication number: CN113137856A
Application number: CN202110516254.9A
Authority: CN
Inventors: 赵晓; 吴林明
Original assignee: Jiangsu Huiran Industrial Co ltd
Current assignee: Jiangsu Huiran Industrial Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-07-20
Anticipated expiration: 2041-05-12
Also published as: CN113137856B

Abstract

The invention discloses an energy-saving drying device of a drying kiln for wet ore dehydration, and relates to the technical field of thermal equipment. The method comprises the following steps: the waste heat recovery mechanism is arranged at one end of the drying kiln, and an auxiliary heating furnace for drying the ore material in the drying kiln is arranged at one end of the drying kiln, which is far away from the waste heat recovery mechanism; the cooling circulation mechanism is communicated with the waste heat recovery mechanism through a filter pipe, the filter pipe is used for filtering a heat exchange medium for heat exchange, and the cooling circulation mechanism is arranged outside the rotary kiln; through setting up waste heat recovery mechanism and cooling cycle mechanism, the inside that water got into the fender liquid section of thick bamboo cools off the rotary kiln, keeps off liquid section of thick bamboo cooperation rotary kiln simultaneously and carries out a heat transfer to being used for refrigerated water, and the water after a heat transfer is through the medium pipe one, medium pipe two and medium pipe three carry out the secondary heat transfer for the inside high fever flue gas of rotary kiln can obtain make full use of, has guaranteed the device's usability.

Description

A energy-saving drying device of drying kiln for wet ore dehydration

Technical Field

The invention relates to the technical field of thermal equipment, in particular to an energy-saving drying device of a drying kiln for dehydrating wet ores.

Background

The rotary drying kiln is a thermal device widely used in non-ferrous metallurgy factories, in the non-ferrous metallurgy process, various materials such as concentrate, flux, solid fuel, various slag materials and the like can be fed into the kiln after being dried, and the main device for drying the materials is the rotary drying kiln.

Rotary drying kiln mainly is used and dries the mineral aggregate before calcination rotary kiln, and current rotary drying kiln adopts independent stoving source mostly, and the stoving mode energy consumption that adopts independent stoving source is high, leads to that use cost rises and the high fever flue gas that current calcination rotary kiln produced to discharge after direct through environmental protection processing mostly, can't be to the high fever flue gas make full use of calcination rotary kiln, can't satisfy the user demand.

Disclosure of Invention

In order to achieve the purpose, the invention provides the following technical scheme: a drying kiln energy-saving drying device for dehydrating wet ores comprises:

the waste heat recovery mechanism is arranged at one end of the drying kiln, and an auxiliary heating furnace for drying the ore material in the drying kiln is arranged at one end of the drying kiln, which is far away from the waste heat recovery mechanism;

the cooling circulation mechanism is communicated with the waste heat recovery mechanism through a filter pipe, the filter pipe is used for filtering heat exchange media for heat exchange, the cooling circulation mechanism is arranged outside the rotary kiln, one end of the rotary kiln, which is far away from the cooling circulation mechanism, is provided with a smoke collection chamber for feeding materials into the rotary kiln and collecting high-heat smoke, and the smoke collection chamber is communicated with the supplementary heating furnace through a smoke pipe;

the waste heat recovery mechanism comprises a smoke waste heat box communicated with the drying kiln, heat exchange tubes are arranged inside the smoke waste heat box, and at least one medium tube I, at least one medium tube II and at least one medium tube III are respectively arranged on two sides and inside of each heat exchange tube;

the cooling circulation mechanism comprises a liquid blocking cylinder arranged outside the rotary kiln, the liquid blocking cylinder is matched with the rotary kiln to perform primary heat exchange on a heat exchange medium, the heat exchange medium can be used for cooling the rotary kiln, the liquid blocking cylinder is communicated with the flue gas waste heat tank through a filter pipe, a filter cylinder is arranged inside the filter pipe, a first connecting cylinder and a second connecting cylinder which are communicated with each other are arranged outside the filter cylinder, a movable rod is arranged inside the second connecting cylinder, at least one filter screen and a scraping rod for cleaning the filter screen are arranged on the surface of the movable rod, a cover plate is arranged at one end of the second connecting cylinder, a sewage discharging cylinder communicated with the second connecting cylinder is arranged on one side of the cover plate, a collecting bottle for collecting impurities in the heat exchange medium is arranged on the surface of the sewage discharging cylinder, and the heat exchange medium filtered by the filter screen sequentially enters the first medium pipe through the filter pipe, And secondary heat exchange is carried out in the medium pipe II and the medium pipe III.

As a preferable technical scheme of the invention, a coal injection pipe for conveying fuel is arranged in the rotary kiln, at least two side baffles are arranged on the surface of the rotary kiln, the side baffles are arranged in a conical shape, a protective edge is fixedly arranged on one side of each side baffle, and the surface of each protective edge extends to the inside of the liquid blocking cylinder.

As a preferable technical scheme of the invention, a liquid inlet pipe for inputting a heat exchange medium is arranged outside the side baffle, a filter pipe is arranged outside the side baffle and is positioned right below the liquid inlet pipe, and the filter pipe is obliquely arranged.

As a preferable technical scheme of the invention, a liquid discharge pipe is arranged on one side of the flue gas waste heat box, a distribution chamber is arranged on the other side of the flue gas waste heat box, one ends of the first medium pipe, the second medium pipe and the third medium pipe all extend into the liquid discharge pipe, the other ends of the first medium pipe, the second medium pipe and the third medium pipe all extend into the distribution chamber, and one end of the filter pipe, which is far away from the liquid blocking barrel, extends into the distribution chamber.

As a preferable technical scheme, the partition plate is arranged in the flue gas waste heat box, the heat exchange tube is arranged at the top of the partition plate, one side of the heat exchange tube is provided with an exhaust port, the top of the flue gas waste heat chamber is provided with an exhaust funnel for conveying flue gas, and the bottom of the flue gas waste heat box is provided with a discharge hopper for discharging materials.

As a preferable technical scheme of the invention, one side of the smoke collection chamber is provided with a first feeding pipe for adding mineral aggregate to be calcined, and one side of the concurrent heating furnace is provided with a second feeding pipe for adding mineral aggregate to be dried and an air inlet pipe for connecting an air blower.

According to a preferable technical scheme, concrete layers are poured inside the rotary kiln and the drying kiln, at least one ring frame is arranged inside the concrete layers, at least one connecting plate is welded on one side of the ring frame, reinforcing ribs are welded on the surface of the ring frame, and the ring frame is welded inside the rotary kiln and the drying kiln through the reinforcing ribs.

According to a preferable technical scheme of the invention, a baffle ring for limiting the filter screen is arranged in the connecting cylinder II, the scraping rod is arranged in an irregular T shape and is made of a magnet, and one end of the scraping rod is inserted into the movable rod in a magnetic attraction manner.

As a preferable technical scheme of the present invention, one end of the movable rod penetrates through the inside of the cover plate and extends to the outside of the cover plate, a sealing ring is disposed at a joint of the surface of the movable rod and the cover plate, a sewage discharge hole is formed in the cover plate, and the sewage discharge hole is a kidney-shaped hole.

According to a preferable technical scheme of the invention, one end of the sewage discharge cylinder is in a shape matched with the waist-shaped hole, one end of the sewage discharge cylinder, far away from the cover plate, is in a circular shape, the collection bottle and the sewage discharge cylinder are in threaded sleeve joint, and valves are arranged inside the sewage discharge cylinder and the first connecting cylinder.

Compared with the prior art, the invention provides an energy-saving drying device of a drying kiln for dehydrating wet ores, which has the following beneficial effects:

1. this a drying kiln energy-saving drying device for wet ore dehydration, through setting up waste heat recovery mechanism and cooling cycle mechanism, the inside that water got into the fender liquid section of thick bamboo cools off the rotary kiln, keep off liquid section of thick bamboo cooperation rotary kiln simultaneously and carry out a heat transfer to being used for refrigerated water, water after a heat transfer is through medium pipe one, medium pipe two and medium pipe three carry out the secondary heat transfer for the inside high fever flue gas of rotary kiln can obtain make full use of, has guaranteed the device's usability.

2. This a drying kiln energy-saving drying device for wet ore dehydration through setting up waste heat recovery mechanism, and medium pipe one, medium pipe two and medium pipe three are located the both sides and the inside of heat exchange tube respectively, and the curved heat exchange tube that sets up of cooperation can be abundant carries out the heat transfer operation with the inside high fever flue gas of heat exchange tube, has guaranteed the efficiency of being heated of medium pipe one, medium pipe two and the three inside waters of medium pipe, accords with economic benefits.

3. This a drying kiln energy-saving drying device for wet ore dehydration through setting up the filter tube, filters water through the filter screen for the impurity of aquatic is effectively intercepted, has avoided impurity to adhere to in the inside of medium pipe one, medium pipe two and medium pipe three, has guaranteed heat exchange efficiency, has guaranteed the clean rate of water simultaneously, has made things convenient for the later stage to utilize, has wide application prospect.

4. This an energy-saving drying device of drying kiln for wet ore dehydration through setting up the filter tube, rotates the movable rod for the movable rod drives scrapes the pole and scrapes the surface of filter screen, makes the impurity of filter screen interception strike off the inside of deposiing to the receiving flask, scrapes the iron fillings of pole adsorbable aquatic simultaneously, has guaranteed filtration efficiency, has reduced the change cycle of filter screen.

5. This an energy-saving drying device of drying kiln for wet ore dehydration through setting up the filter tube, when needing to clear up the collecting vessel, closes the valve of control blowdown section of thick bamboo, rotates the collecting vessel and breaks away from being connected with a blowdown section of thick bamboo, can clear up, when needing to change the filter screen, closes the valve of control connecting cylinder one earlier, rotates the apron and breaks away from and connecting cylinder two, can take out movable rod and filter screen, and operation mode is simple, does benefit to later maintenance.

Drawings

FIG. 1 is a schematic structural diagram of an energy-saving drying device of a drying kiln for dehydrating wet ores, which is provided by the invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is a sectional view of a flue gas waste heat box structure of the drying kiln energy-saving drying device for wet ore dehydration provided by the invention;

FIG. 4 is a sectional view of a rotary kiln structure of the drying kiln energy-saving drying device for wet ore dehydration in accordance with the present invention;

FIG. 5 is a sectional view of a liquid blocking cylinder structure of the drying kiln energy-saving drying device for wet ore dehydration in accordance with the present invention;

FIG. 6 is a sectional view of a second structure of a connecting cylinder of the energy-saving drying device of the drying kiln for wet ore dehydration provided by the invention;

FIG. 7 is an enlarged view of the structure at A in FIG. 6;

FIG. 8 is an enlarged view of the structure at B in FIG. 6;

fig. 9 is a schematic structural view of a sewage draining hole of the energy-saving drying device of the drying kiln for wet ore dehydration provided by the invention.

In the figure: 1. a waste heat recovery mechanism; 11. a flue gas waste heat box; 111. a partition plate; 112. an exhaust funnel; 12. a heat exchange pipe; 13. a first medium pipe; 14. a medium pipe II; 15. a third medium pipe; 16. a liquid discharge pipe; 17. a dispensing chamber; 18. an exhaust port; 19. a discharge hopper; 2. a cooling circulation mechanism; 21. a liquid blocking cylinder; 22. a liquid inlet pipe; 3. a filter tube; 31. a filter cartridge; 32. a first connecting cylinder; 33. a second connecting cylinder; 331. a baffle ring; 34. a movable rod; 341. a filter screen; 342. a scraping rod; 35. a cover plate; 351. a sewage draining hole; 36. a blowdown cylinder; 37. a collection bottle; 38. a seal ring; 4. a rotary kiln; 41. a transition zone; 42. burning the mixture into a belt; 43. a cooling zone; 44. a coal injection pipe; 45. side blocking; 46. protecting edges; 5. a drying kiln; 6. a smoke collection chamber; 61. a first feeding pipe; 7. a heat supplementing furnace; 71. a feeding pipe II; 72. an air inlet pipe; 8. a flue gas pipe; 9. a concrete layer; 91. a ring frame; 92. a connecting plate; 93. and (5) reinforcing ribs.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 9, an energy-saving drying device of a drying kiln for dehydrating wet ores includes:

waste heat recovery mechanism 1, waste heat recovery mechanism 1 sets up in the one end of drying kiln 5, the one end that waste heat recovery mechanism 1 was kept away from to drying kiln 5 is provided with the concurrent heating stove 7 that is used for drying to the mineral aggregate in the drying kiln 5.

Cooling circulation mechanism 2, cooling circulation mechanism 2 is linked together through filter tube 3 with waste heat recovery mechanism 1, filter tube 3 is used for filtering the heat transfer medium of heat transfer usefulness, cooling circulation mechanism 2 sets up in the outside of rotary kiln 4, rotary kiln 4 comprises excessive area 41, burning zone 42 and cooling zone 43, the one end that cooling circulation mechanism 2 was kept away from to rotary kiln 4 is provided with the smoke collecting chamber 6 that is used for reinforced and the high fever flue gas of set in to rotary kiln 4, smoke collecting chamber 6 is linked together through flue gas pipe 8 with hot stove 7 of benefit.

The waste heat recovery mechanism 1 comprises a flue gas waste heat box 11 communicated with the drying kiln 5, a heat exchange tube 12 is arranged inside the flue gas waste heat box 11, the heat exchange tube 12 is arranged in a curved shape, and two sides and the inside of the heat exchange tube 12 are respectively provided with a medium tube I13, a medium tube II 14 and a medium tube III 15, wherein the number of the medium tubes is not less than one.

The cooling circulation mechanism 2 comprises a liquid blocking cylinder 21 arranged outside a rotary kiln 4, the liquid blocking cylinder 21 is positioned at a cooling zone 43, the liquid blocking cylinder 21 is matched with the rotary kiln 4 to perform primary heat exchange on a heat exchange medium, the heat exchange medium can be used for cooling the rotary kiln 4 at the same time, the liquid blocking cylinder 21 is communicated with a flue gas waste heat box 11 through a filter pipe 3, a filter cylinder 31 is arranged inside the filter pipe 3, a first connecting cylinder 32 and a second connecting cylinder 33 which are mutually communicated are arranged outside the filter cylinder 31, a movable rod 34 is arranged inside the second connecting cylinder 33, at least one filter screen 341 and a scraping rod 342 for cleaning the filter screen 341 are arranged on the surface of the movable rod 34, a cover plate 35 is arranged at one end of the second connecting cylinder 33, a pollution discharge cylinder 36 communicated with the second connecting cylinder 33 is arranged at one side of the cover plate 35, and a collecting bottle 37 for collecting impurities in the heat exchange medium is arranged on the surface of the pollution discharge cylinder 36, the heat exchange medium filtered by the filter screen 341 sequentially enters the first medium pipe 13, the second medium pipe 14 and the third medium pipe 15 through the filter pipe 3 to perform secondary heat exchange, the waste heat recovery mechanism 1 and the cooling circulation mechanism 2 are arranged, water enters the liquid blocking barrel 21 to cool the rotary kiln 4, the liquid blocking barrel 21 is matched with the rotary kiln 4 to perform primary heat exchange on the water for cooling, and the water after primary heat exchange performs secondary heat exchange through the first medium pipe 13, the second medium pipe 14 and the third medium pipe 15, so that high-heat flue gas in the rotary kiln 4 can be fully utilized, the usability of the device is ensured, the first medium pipe 13, the second medium pipe 14 and the third medium pipe 15 are respectively positioned at two sides and in the heat exchange pipe 12 and matched with the heat exchange pipe 12 arranged in a curved shape, and can fully perform heat exchange operation with the flue gas in the heat exchange pipe 12, guaranteed the efficiency of being heated of medium pipe one 13, medium pipe two 14 and the three 15 inside waters of medium pipe, accord with economic benefits, through setting up filter tube 3, filter water through filter screen 341 for the impurity of aquatic is effectively intercepted, has avoided impurity to adhere to in medium pipe one 13, medium pipe two 14 and the three 15 inside of medium pipe, has guaranteed heat exchange efficiency, has guaranteed the clean rate of water simultaneously, has made things convenient for the later stage to utilize, has wide application prospect.

As a specific technical solution of this embodiment, a coal injection pipe 44 for conveying fuel is disposed inside the rotary kiln 4, at least two side baffles 45 are disposed on the surface of the rotary kiln 4, the side baffles 45 are arranged in a tapered shape, a protective edge 46 is fixedly disposed on one side of each side baffle 45, and the surface of each protective edge 46 extends into the liquid blocking cylinder 21.

In this embodiment, the side baffle 45 provided with a cone shape is used together with the protective edge 46, so that the rotary kiln 4 can not scatter the heat exchange medium on the surface of the rotary kiln 4 when rotating, the loss of the heat exchange medium is reduced, and the coal injection pipe 44 is a fuel pipe for injecting pulverized coal.

As a specific technical solution of this embodiment, a liquid inlet pipe 22 for inputting a heat exchange medium is disposed outside the side baffle 45, a filter pipe 3 located right below the liquid inlet pipe 22 is disposed outside the side baffle 45, and the filter pipe 3 is disposed in an inclined manner.

In this embodiment, the filter tube 3 that the slope set up does benefit to more and keeps off the heat transfer medium in the liquid cylinder 21 and flows to the distributing chamber 17, and the inside of keeping off liquid cylinder 21 is added to the heat transfer medium of heat transfer usefulness through feed liquor pipe 22, and heat transfer medium can be the pure water.

As a specific technical scheme of this embodiment, pure water is adopted as a heat exchange medium, so that impurities entering water at the side baffle 45 and the liquid blocking cylinder 21 can be intercepted at the filter screen 341, the cleaning rate of water is ensured, and later-stage utilization is facilitated, a liquid discharge pipe 16 is arranged at one side of the flue gas waste heat box 11, a distribution chamber 17 is arranged at the other side of the flue gas waste heat box 11, one ends of a medium pipe one 13, a medium pipe two 14 and a medium pipe three 15 all extend into the liquid discharge pipe 16, the other ends of the medium pipe one 13, the medium pipe two 14 and the medium pipe three 15 all extend into the distribution chamber 17, and one end of the filter pipe 3, which is far away from the liquid blocking cylinder 21, extends into the distribution chamber 17.

In this embodiment, referring to fig. 3, one end of the second medium tube 14 extends to the partition plate 111, then bypasses the front side or the rear side of the heat exchange tube 12, and is then communicated with the liquid discharge tube 16, and the first medium tube 13, the second medium tube 14, and the third medium tube 15 are respectively located at two sides and inside the heat exchange tube 12, so that heat exchange operation can be sufficiently performed with high-heat flue gas inside the heat exchange tube 12, and the heating efficiency of the heat exchange medium inside the first medium tube 13, the second medium tube 14, and the third medium tube 15 is ensured.

As a specific technical scheme of this embodiment, the inside of flue gas waste heat box 11 is provided with baffle 111, heat exchange tube 12 sets up in the top of baffle 111, one side of heat exchange tube 12 is provided with gas vent 18, the top of flue gas waste heat chamber is provided with the aiutage 112 that is used for carrying the flue gas, the bottom of flue gas waste heat box 11 is provided with row hopper 19 that is used for arranging the material.

In this embodiment, the dried mineral aggregate is discharged through the discharge hopper 19, the flue gas inside the heat exchange tube 12 is discharged to the inside of the flue gas waste heat box 11 through the exhaust port 18, the heat exchange tube 12 is installed by the partition plate 111, and the flue gas after the waste heat is used up is conveyed to the next process through the exhaust funnel 112 for storage.

As a specific technical solution of this embodiment, one side of the smoke collection chamber 6 is provided with a first feeding pipe 61 for adding mineral materials to be calcined, and one side of the concurrent heating furnace 7 is provided with a second feeding pipe 71 for adding mineral materials to be dried and an air inlet pipe 72 for connecting an air blower.

In this embodiment, the inside of adding rotary kiln 4 through a feed tube 61 with the mineral aggregate after drying is calcined, the inside of adding dry kiln 5 with the mineral aggregate that treats drying is dried to feed tube two 71, the inside high fever flue gas of rotary kiln 4 passes through flue gas pipe 8 and the inside of hot stove 7 entering dry kiln 5 of benefit and treats the mineral aggregate of drying and dry, when high fever flue gas can't satisfy dry kiln 5 and dry by fire the material, it supplies heat for it to launch hot stove 7, connect air-blower cooperation heat stove 7 through intake pipe 72 and use together, the device rational arrangement system equipment, the investment system is practiced thrift, succinctly reliable maintenance is convenient, waste heat make full use of to rotary kiln 4, wide application prospect has.

As a specific technical scheme of this embodiment, concrete layer 9 has all been pour in the inside of rotary kiln 4 and dry kiln 5, the inside of concrete layer 9 is provided with the ring frame 91 that a quantity is no less than one, the welding of one side of ring frame 91 has the connecting plate 92 that a quantity is no less than one, the welding of surface of ring frame 91 has strengthening rib 93, ring frame 91 passes through strengthening rib 93 and welds in the inside of rotary kiln 4 and dry kiln 5.

In this embodiment, strengthening rib 93 cooperation ring frame 91 and connecting plate 92 have guaranteed concrete layer 9's tightness, and ring frame 91 cooperation connecting plate 92, intensity is high, and non-deformable accords with economic benefits for it is more smooth and easy when arranging the material, has effectively solved the problem that concrete layer 9 that long-time high temperature, wearing and tearing lead to drops, has reduced the kiln stopping repair cycle, has guaranteed production efficiency.

As a specific technical solution of this embodiment, a baffle ring 331 for limiting the filter screen 341 is disposed inside the second connecting cylinder 33, the scraping rod 342 is disposed in an irregular T shape, the scraping rod 342 is made of a magnet, and one end of the scraping rod 342 is inserted into the movable rod 34 in a magnetic attraction manner.

In this embodiment, keep off ring 331 and restricted the degree of depth that filter screen 341 got into two 33 of connecting cylinder, magnet is pegged graft with movable rod 34 through the mode of magnetism, later stage dismantlement has been made things convenient for, scrape the iron fillings among the adsorbable heat transfer medium of pole 342 simultaneously, impurity filtering efficiency has been guaranteed, heat transfer medium's pollution has been reduced, refer to fig. 7 and fig. 8, outside at apron 35 rotates movable rod 34, make movable rod 34 drive scrape the pole 342 and scrape the surface of filter screen 341, make the impurity of filter screen 341 interception scraped the inside of deposiing to receiving flask 37, filter screen 341's change cycle has been reduced, the use cost in later stage has been reduced, do benefit to user's operation.

As a specific technical solution of this embodiment, one end of the movable rod 34 penetrates through the inside of the cover plate 35 and extends to the outside of the cover plate 35, a sealing ring 38 is disposed at a connection portion between the surface of the movable rod 34 and the cover plate 35, a sewage discharge hole 351 is formed in the cover plate 35, and the sewage discharge hole 351 is a kidney-shaped hole.

In this embodiment, apron 35 is connected and apron 35 is provided with sealed the pad with the junction of connecting cylinder two 33 with the mode that connecting cylinder two 33 adopted the screw thread to cup joint, apron 35 adopts the mode that the screw thread cup jointed with connecting cylinder two 33, it dismantles apron 35 and movable rod 34 to have made things convenient for the later stage, change filter screen 341, the usability of the device has been guaranteed, sealed pad and sealing ring 38 all adopt the preparation of rubber material, the blowoff hole 351 that waist shape set up, guaranteed that the inside impurity of connecting cylinder two 33 can be smooth deposit to the inside of receiving flask 37, the cleaning efficiency of impurity has been guaranteed.

As a specific technical scheme of this embodiment, the one end of a waste discharge section of thick bamboo 36 is the shape that matches with waist shape hole, the one end that apron 35 was kept away from to a waste discharge section of thick bamboo 36 is circular setting, collecting bottle 37 adopts the mode that the screw thread cup jointed with a waste discharge section of thick bamboo 36, the inside of a waste discharge section of thick bamboo 36 and connecting cylinder 32 all is provided with the valve.

In this embodiment, through the opening and closing of the steerable connecting cylinder of valve 32 and a blowdown section of

thick bamboo

36, 36 cooperation blowdown holes 351 of a blowdown section of thick bamboo have guaranteed the collection efficiency of impurity, and collecting bottle 37 adopts the mode that the screw thread cup jointed with a blowdown section of thick bamboo 36, has made things convenient for the later stage to dismantle, and collecting bottle 37 is provided with the rubber pad with the junction of a blowdown section of thick bamboo 36 simultaneously and seals, closes the valve of control blowdown section of thick bamboo 36, can clear up collecting bottle 37.

When in use, the ore material with calcination is added through the first feeding pipe 61, the coal spraying pipe 44 is used for spraying fuel to ignite, the cooling water for the rotary kiln 4 is added through the liquid inlet pipe 22, the water is poured on the cooling belt 43 to cool the rotary kiln 4, the kiln coating adhered and hung can be quickly cooled down, the temperature difference between the material and the kiln coating is reduced, the adhesion and hanging of the kiln coating are facilitated, the high-temperature flue gas in the rotary kiln 4 enters the inside of the drying kiln 5 through the flue gas chamber, the flue gas pipe 8 and the reheating furnace 7, the ore material to be dried is added into the drying kiln 5 through the second feeding pipe 71, when the high-temperature flue gas cannot meet the drying requirement of the drying kiln 5, the reheating furnace 7 is used for supplying heat, the flue gas in the drying kiln 5 enters the inside of the heat exchange pipe 12 through the flue gas waste heat box 11, the water after the temperature reduction of the rotary kiln 4 falls into the liquid blocking barrel 21, the side baffle 45 is used for blocking the water, so that the water cannot be sputtered around, meanwhile, the rotation of the rotary kiln 4 is not influenced, but external dust can enter water through the process, the water in the liquid blocking cylinder 21 is cooled to a certain temperature, the water in the liquid blocking cylinder 21 enters the inside of the filter pipe 3, the filter screen 341 in the filter pipe 3 filters the water, the movable rod 34 is rotated outside the cover plate 35, the movable rod 34 drives the scraping rod 342 to scrape the surface of the filter screen 341, impurities intercepted by the filter screen 341 are scraped and deposited in the collecting bottle 37, meanwhile, the scraping rod 342 can absorb iron filings in the water, the filtering efficiency is ensured, the replacement period of the filter screen 341 is shortened, when the collecting bottle 37 needs to be cleaned, a valve for controlling the sewage discharge cylinder 36 is closed, the collecting bottle 37 is rotated to be separated from the connection with the sewage discharge cylinder 36, the cleaning can be carried out, and when the filter screen 341 needs to be replaced, the valve for controlling the first connecting cylinder 32 is closed, the cover plate 35 is rotated to be separated from the second connecting cylinder 33, the movable rod 34 and the filter screen 341 can be taken out, the filtered water sequentially enters the first medium pipe 13, the second medium pipe 14 and the third medium pipe 15 through the distribution chamber 17, the first medium pipe 13, the second medium pipe 14 and the third medium pipe 15 are respectively located on two sides and inside the heat exchange pipe 12, heat exchange operation can be fully performed with high-heat smoke inside the heat exchange pipe 12, heating efficiency of the water inside the first medium pipe 13, the second medium pipe 14 and the third medium pipe 15 is guaranteed, the water after full heat exchange is discharged through the liquid discharge pipe 16, the smoke inside the heat exchange pipe 12 is conveyed to the next process through the exhaust cylinder 112, and operation of the device is completed through the above steps.

To sum up, this a drying kiln 5 energy-saving drying device for wet ore dehydration through setting up waste heat recovery mechanism 1 and cooling cycle mechanism 2, water gets into the inside of keeping off a liquid section of thick bamboo 21 and cools off rotary kiln 4, keeps off liquid section of thick bamboo 21 cooperation rotary kiln 4 simultaneously and carries out a heat transfer to being used for refrigerated water, water after the heat transfer once is through medium pipe 13, the second heat transfer that carries on of medium pipe two 14 and medium pipe three 15 for the inside high fever flue gas of rotary kiln 4 can obtain make full use of, has guaranteed the usability of the device.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a drying kiln energy-saving drying device for wet ore dehydration which characterized in that includes:

the waste heat recovery mechanism (1), the waste heat recovery mechanism (1) is arranged at one end of the drying kiln (5), and a heat supplementing furnace (7) used for drying the mineral aggregate in the drying kiln (5) is arranged at one end of the drying kiln (5) far away from the waste heat recovery mechanism (1);

the cooling circulation mechanism (2) is communicated with the waste heat recovery mechanism (1) through a filter pipe (3), the filter pipe (3) is used for filtering heat exchange media for heat exchange, the cooling circulation mechanism (2) is arranged outside the rotary kiln (4), one end, far away from the cooling circulation mechanism (2), of the rotary kiln (4) is provided with a smoke collection chamber (6) used for feeding materials into the rotary kiln (4) and collecting high-heat smoke, and the smoke collection chamber (6) is communicated with the heat supplementing furnace (7) through a smoke pipe (8);

the waste heat recovery mechanism (1) comprises a flue gas waste heat box (11) communicated with the drying kiln (5), a heat exchange pipe (12) is arranged inside the flue gas waste heat box (11), and at least one medium pipe I (13), at least one medium pipe II (14) and at least one medium pipe III (15) are respectively arranged on two sides and inside of the heat exchange pipe (12);

the cooling circulation mechanism (2) comprises a liquid blocking cylinder (21) arranged outside the rotary kiln (4), the liquid blocking cylinder (21) is matched with the rotary kiln (4) to perform primary heat exchange on a heat exchange medium, the heat exchange medium can be used for cooling the rotary kiln (4) at the same time, the liquid blocking cylinder (21) is communicated with the flue gas waste heat box (11) through a filter pipe (3), a filter cylinder (31) is arranged inside the filter pipe (3), a first connecting cylinder (32) and a second connecting cylinder (33) which are communicated with each other are arranged outside the filter cylinder (31), a movable rod (34) is arranged inside the second connecting cylinder (33), at least one filter screen (341) and a scraping rod (342) used for cleaning the filter screen (341) are arranged on the surface of the movable rod (34), a cover plate (35) is arranged at one end of the second connecting cylinder (33), and a pollution discharge cylinder (36) communicated with the second connecting cylinder (33) is arranged at one side of the cover plate (35), the surface of the blowdown cylinder (36) is provided with a collecting bottle (37) for collecting impurities in heat exchange media, and the heat exchange media filtered by the filter screen (341) sequentially enter the interiors of the medium pipe I (13), the medium pipe II (14) and the medium pipe III (15) through the filter pipe (3) for secondary heat exchange.

2. The energy-saving drying device of the drying kiln for dehydrating the wet ore according to claim 1, characterized in that: the rotary kiln is characterized in that a coal injection pipe (44) used for conveying fuel is arranged in the rotary kiln (4), at least two side baffles (45) are arranged on the surface of the rotary kiln (4), the side baffles (45) are arranged in a conical manner, a protective edge (46) is fixedly arranged on one side of each side baffle (45), and the surface of each protective edge (46) extends into the liquid blocking cylinder (21).

3. The energy-saving drying device of the drying kiln for dehydrating the wet ore according to claim 2, characterized in that: the outside of side fender (45) is provided with feed liquor pipe (22) that are used for inputing heat transfer medium, the outside of side fender (45) is provided with filter tube (3) that are located feed liquor pipe (22) under, filter tube (3) are the slope and set up.

4. The energy-saving drying device of the drying kiln for dehydrating the wet ore according to claim 1, characterized in that: one side of the flue gas waste heat box (11) is provided with a liquid discharge pipe (16), the other side of the flue gas waste heat box (11) is provided with a distribution chamber (17), one ends of the medium pipe I (13), the medium pipe II (14) and the medium pipe III (15) all extend to the inside of the liquid discharge pipe (16), the other ends of the medium pipe I (13), the medium pipe II (14) and the medium pipe III (15) all extend to the inside of the distribution chamber (17), and one end, away from the filter pipe (3), of the liquid blocking barrel (21) extends to the inside of the distribution chamber (17).

5. The energy-saving drying device of the drying kiln for dehydrating the wet ore according to claim 1, characterized in that: the inside of flue gas waste heat case (11) is provided with baffle (111), heat exchange tube (12) set up in the top of baffle (111), one side of heat exchange tube (12) is provided with gas vent (18), the top of flue gas waste heat room is provided with aiutage (112) that are used for carrying the flue gas, the bottom of flue gas waste heat case (11) is provided with row hopper (19) that are used for arranging the material.

6. The energy-saving drying device of the drying kiln for dehydrating the wet ore according to claim 1, characterized in that: one side of the smoke collection chamber (6) is provided with a first feeding pipe (61) for adding mineral aggregate to be calcined, and one side of the concurrent heating furnace (7) is provided with a second feeding pipe (71) for adding mineral aggregate to be dried and an air inlet pipe (72) for connecting an air blower.

7. The energy-saving drying device of the drying kiln for dehydrating the wet ore according to claim 1, characterized in that: concrete layer (9) have all been pour to the inside of rotary kiln (4) and drying kiln (5), the inside of concrete layer (9) is provided with ring frame (91) that quantity is no less than one, one side welding of ring frame (91) has connecting plate (92) that quantity is no less than one, the skin weld of ring frame (91) has strengthening rib (93), ring frame (91) weld in the inside of rotary kiln (4) and drying kiln (5) through strengthening rib (93).

8. The energy-saving drying device of the drying kiln for dehydrating the wet ore according to claim 1, characterized in that: the inside of connecting cylinder two (33) is provided with and is used for keeping off ring (331) spacing to filter screen (341), it is irregular T shape setting to scrape pole (342), scrape pole (342) and adopt the magnet preparation, the one end of scraping pole (342) is pegged graft in the inside of movable rod (34) through the mode of magnetism.

9. The energy-saving drying device of the drying kiln for dehydrating the wet ore according to claim 1, characterized in that: one end of the movable rod (34) penetrates through the inside of the cover plate (35) and extends to the outside of the cover plate (35), a sealing ring (38) is arranged at the joint of the surface of the movable rod (34) and the cover plate (35), a sewage discharge hole (351) is formed in the cover plate (35), and the sewage discharge hole (351) is a waist-shaped hole.

10. The energy-saving drying device of the drying kiln for dehydrating the wet ore according to claim 1, characterized in that: the one end of blowdown section of thick bamboo (36) is the shape that matches with waist shape hole, the one end that apron (35) were kept away from in blowdown section of thick bamboo (36) is circular setting, collecting bottle (37) adopt the mode that the screw thread cup jointed with blowdown section of thick bamboo (36), the inside of blowdown section of thick bamboo (36) and connecting cylinder (32) all is provided with the valve.