CN201180150Y

CN201180150Y - Pelletizer for steel-smelting sewage sludge with drying method

Info

Publication number: CN201180150Y
Application number: CNU2008200061946U
Authority: CN
Inventors: 刘德生; 马有德
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-15
Filing date: 2008-02-15
Publication date: 2009-01-14
Anticipated expiration: 2018-02-15

Abstract

The utility model relates to a steelmaking sludge drying pelletizer which comprises a spiral mixed material conveyor, a platen, a discharging sealed cover, a heating furnace, a draft fan and a platen rotation and drive device; the platen is transversely and obliquely rotated and supported by a platen supporting device; the high end of the platen is provided with the heating furnace; a heat exhaust port of the heating furnace and the high end of the platen are in rotary connection; the top end of the heating furnace is provided with a feed hopper which extends to the high end of the platen by a bended feeding pipe; the low end of the platen is provided with the fixed discharging sealed cover; the platen and the fixed discharging sealed cover are in rotary connection; an air outlet is arranged on the sealed cover and is connected with the draft fan by an induced draft pipe; and the lower end of the sealed cover is provided with a discharge port. The steelmaking sludge drying pelletizer has the advantages that wet sludge does not need to be aired, can be directly dried and has an occupied area; the sludge is subject to drying and pelletization and is completed once; the produced granular pellets can be directly added into a converter for multiple steelmaking; and the steelmaking sludge drying pelletizer can be matched with a filter press.

Description

Steel-smelting sewage sludge oven dry pelletizer

Technical field

The utility model relates to a kind of steel-smelting sewage sludge oven dry pelletizer, is mainly used in the recycling to steel-smelting sewage sludge.

Background technology

Present national steel-smelting sewage sludge is recycled and is substantially still adopted natural drying to carry out drying, not only needs a large amount of places, also will be subjected to climatic influences, and artificial input is bigger, and production efficiency is very low, causes certain influence for business economic benefit and environmental protection aspect.The sewage sludge quality (moisture deal) of seasoning simultaneously can't strict be controlled, and brings inconvenience to next procedure.

Summary of the invention

The purpose of this utility model just provides a kind of steel-smelting sewage sludge oven dry pelletizer, to solve a large amount of place of needs that prior art exists, is subjected to climatic influences; Artificial input is bigger, and production efficiency is very low, causes certain influence for business economic benefit and environmental protection aspect; The sewage sludge quality of seasoning (moisture deal) can't strict be controlled, and brings the problem of inconvenience to next procedure.

The technical solution of the utility model is: comprise spiral batch mixing transfer roller, cylinder, discharging sealing cover, process furnace, induced draft fan and cylinder device of rotation driving, cylinder 7 is laterally slightly obliquely by the drum supporting device rotational support, at its high-end process furnace that is provided with, the heat extraction mouth of this process furnace is connected with the high-end sealed rotational of described cylinder, top at this process furnace is provided with load hopper, and the supply pipe by bending extend in cylinder high-end; Low side at described cylinder is provided with fixed discharging sealing cover, and both sealed rotational connect, and covers in sealing to be provided with air outlet and to be connected with induced draft fan by induced exhaust, and the lower end of covering in sealing is provided with discharge port.

The utility model has the advantages that: wet mud can directly be dried without airing, and floor space is little; Mud is dried, is made ball (also can powdering) and once finishes; The pelletizing granularity of producing can directly add converter, and many steel-making are used in steel-making; Energy and the supporting use of pressure filter; Before the adding converter, percentage of damage is no more than 5% through transportation.

Description of drawings

Fig. 1 is an overall structure synoptic diagram of the present utility model;

Fig. 2 is the B-B sectional view of Fig. 1;

Fig. 3 is the C-C sectional view of Fig. 1;

Fig. 4 is the D-D sectional view of Fig. 1;

Fig. 5 is the E-E sectional view of Fig. 1.

Description of reference numerals: 4, spiral batch mixing transfer roller, 5, conveyor, 6, pulverizer, 7, cylinder, 8, the discharging sealing cover, 9, fly-ash separator, 10, induced draft fan, 11, the outfeed belt machine, 12, the M shape net, 13, taper balling-up tube, 14, taper leaks tube, 15, gas blower, 16, process furnace, 17, dedust air duct, 18, induced exhaust, 19, load hopper, 20, conical seal ring, 21, drum supporting device, 22, viewing window, 23, gear ring, 24, drive unit, 25, discharge port, 26, the groove sealing-ring, 27, dust gathering arrester, 28, crooked supply pipe.

Embodiment

Referring to Fig. 1～Fig. 5, the utility model comprises spiral batch mixing transfer roller 4, cylinder 7, discharging sealing cover 8, process furnace 16, induced draft fan 10 and cylinder device of rotation driving, cylinder 7 (2～5 degree generally tilt) laterally slightly obliquely passes through drum supporting device 21 rotational support, at its high-end process furnace 16 that is provided with, the high-end of the heat extraction mouth of this process furnace 16 and described cylinder 7 is rotationally connected by groove sealing-ring 26.Be provided with load hopper 19 on the top of this process furnace 10, and the supply pipe 28 by bending extend in cylinder 7 high-end.Low side at described cylinder 7 is provided with hard-wired discharging sealing cover 8, and both are adjacent to mutually by conical seal ring 20 and realize that sealed rotational connects.Be provided with air outlet at the center of sealing lid 8 and also be connected with the inlet of fly-ash separator 9 by induced exhaust 17, the outlet of fly-ash separator 9 is connected with induced draft fan 10 by induced exhaust 18.The inner that is positioned at cylinder 7 at induced exhaust 17 is provided with conial dust hood 27, cuts a part in the bottom of this dust gathering arrester 27 and passes through for product.Downside at sealing cover 8 is provided with discharge port 25, and outfeed belt machine 11 is housed below discharge port 25.Inlet mouth at process furnace 16 is equipped with gas blower 15.Also can conveyor 5 be housed at the opening for feed of described spiral batch mixing transfer roller 4.

In described cylinder 7 high-end, the taper balling-up tube 13 that has many apertures is housed; Taper is housed in the lower end of described supply pipe 28 leaks tube 14, this taper is leaked tube 14 and is extend in the right-hand member of taper balling-up tube 13.3～5 roads (individual) M shape net 12 (about 50mm at interval) in axial direction is housed in described cylinder 7 at interval.

The structure of described M shape net 12 is referring to Fig. 5, and its effect is to prevent to surpass to require the pelletizing of standard to enter the finished product district; The effect that tube 14 is leaked in taper is to make mud decompose balling-up; Supply pipe 28 can make mud enter smoothly in the cylinder 7; Gas blower 15 fully burns in order to make coal or coal gas, and improves heat-up rate.

Described process furnace 16 can burn coal, and it is fuel that the gas jet combustion gas also can be installed.

Described cylinder device of rotation driving comprises gear ring 23 and drive unit 24, and gear ring 23 is installed in the cylinder periphery, and drive unit 24 comprises motor, speed reduction unit and transmitting gear, and motor is in transmission connection by speed reduction unit and transmitting gear and described gear ring 23.

Also can be described spiral batch mixing transfer roller 4 supporting pulverizers 6, the opening for feed of the discharge port of pulverizer 6 and spiral batch mixing transfer roller 4 is directly corresponding or by the conveyer connection, together realizes the automatic input of raw material with conveyor 5.

Working process of the present utility model is:

1, transports mud from the stock ground by conveyor 5 and send into a chain for binding criminals and revolve batch mixing transfer roller 4, pulverize iron scales, enter stirrer then with pulverizer 6.

2, a chain for binding criminals revolves and sends into hopper 19 after batch mixing transfer roller 4 fully stirs steel-smelting sewage sludge and binding agent.

3, raw material leaks tube 14 through supply pipe 28 and taper and sends in cylinder 7 high-end of rotation, and raw material is moved by high-end the rolling to the bottom in cylinder, and dries balling-up under the effect of taper balling-up tube in being located at cylinder 13 and rice word net 12.

4, the hot gas of process furnace 16 generations flows through the raw material in cylinder and the heating drum under the effect of induced draft fan 10.

6, fly-ash separator 10 is got rid of the dust that produces in the balling-up process, avoids contaminate environment;

7, finished pellet is fallen on the outfeed belt machine 11 from discharge port 25, and is transported to feed bin or entrucking.

Of the present utility model succeeding in developing not only effectively solved the dry difficult problem of steel-making enterprise to steel-smelting sewage sludge, simultaneously environment protection, resource made full use of positive effect.Make steel-making enterprise all seeking and continuing the oven dry steel-smelting sewage sludge in the limit, can guarantee the sludge drier of steel-smelting sewage sludge quality again.

Drying process advanced person of the present utility model, the production efficiency height, constant product quality, labor strength is low, remarkable in economical benefits.Wet mud raw material water content without airing, can directly enter drying machine drying when 50% left and right sides.Be provided with the decomposition shredder assembly in the drying machine drum, lumps mud can be decomposed broken, make it in drying course, become small-particle, and then enter the balling-up stage, it is spherical that the mud small-particle is become, and all once finishes in dryer, the pelletizing diameter 20mm-45mm that generally produces, water content is about 5%, and cooling agent or slag former are made in suitable steel-making.The dryer that my company produces can be installed in the below of pressure filter, can directly enter dryer by the wet mud after the pressure filter press filtration.The mud that comes out just can reach user's requirement, is convenient to transportation, does not pollute road.

Claims

1, a kind of steel-smelting sewage sludge oven dry pelletizer, it is characterized in that: comprise spiral batch mixing transfer roller, cylinder, discharging sealing cover, process furnace, induced draft fan and cylinder device of rotation driving, cylinder is laterally slightly obliquely by the drum supporting device rotational support, at its high-end process furnace that is provided with, the heat extraction mouth of this process furnace is connected with the high-end sealed rotational of described cylinder, top at this process furnace is provided with load hopper, and the supply pipe by bending extend in cylinder high-end; Low side at described cylinder is provided with hard-wired discharging sealing cover, and both sealed rotational connect, and covers in sealing to be provided with air outlet and to be connected with induced draft fan by induced exhaust, and the lower end of covering in sealing is provided with discharge port.

2, steel-smelting sewage sludge oven dry pelletizer according to claim 1, it is characterized in that: the opening for feed at described spiral batch mixing transfer roller is equipped with conveyor.

3, steel-smelting sewage sludge oven dry pelletizer according to claim 1, it is characterized in that: the outfeed belt machine is equipped with in the discharge port below of described discharging sealing cover.

4, steel-smelting sewage sludge oven dry pelletizer according to claim 1, it is characterized in that: in described cylinder high-end, the taper balling-up tube that has aperture is housed, taper is housed in the lower end of described supply pipe leaks tube, this taper is leaked tube and is extend in taper balling-up tube high-end; Several M shape nets are housed in described cylinder vertically at interval.

5, steel-smelting sewage sludge oven dry pelletizer according to claim 1, it is characterized in that: the two ends at described cylinder are passed through conical seal ring and/or the rotary seal of groove sealing-ring respectively.

6, steel-smelting sewage sludge oven dry pelletizer according to claim 1 is characterized in that: be in series with fly-ash separator on the induced exhaust of described induced draft fan.

7, steel-smelting sewage sludge according to claim 1 oven dry pelletizer is characterized in that: comprise also and the supporting pulverizer of described spiral batch mixing transfer roller that the opening for feed of the discharge port of pulverizer and spiral batch mixing transfer roller is direct corresponding or connect by conveyer.