CN103764852A

CN103764852A - Slag dispersal device and method

Info

Publication number: CN103764852A
Application number: CN201280041752.1A
Authority: CN
Inventors: 伊恩·詹姆斯·麦克唐纳
Original assignee: SIEMENS Ltd
Current assignee: Primetals Technologies Ltd
Priority date: 2011-08-26
Filing date: 2012-08-07
Publication date: 2014-04-30
Anticipated expiration: 2032-08-07
Also published as: IN2014DN00177A; GB2493969A; CN103764852B; EP2748343A1; WO2013029935A1; EP2748343B1; GB201114763D0; GB2493969B

Abstract

A slag stream dispersal device comprises a rotary slag granulator. The granulator comprises a rotary distributor (2) and a plurality of flexible extensions (12) distributed about the rotary distributor, configured to extend radially therefrom.

Description

Slag dispersing apparatus and method

The present invention relates to a kind of slag stream dispersing apparatus and a kind of method of processing overflowing material in dry slag granulation equipment.This slag material can be: metal matrix, such as iron; Metal oxide, such as titanium oxide; Nonmetal, such as the slag of the byproduct generation as metal working process; Or its mixture.

Dry slag granulation is relative backward technology; this technology is used slag in the situation that rotary atomizer---to be generally cupule or the plate-like portion of rotation---with cooling and sclerosis molten slag (for example, obtaining as the byproduct of the iron of producing in blast furnace) is converted to small-particle not adding water.In GB2148330, EP0605472 and EP0804620, provided the example of dry slag apparatus and method.The molten slag that comes from blast furnace is received within the dry slag granulation equipment place for granulation.But the problem that dry slag granulation meets with is that slag flows to the flow velocity reaching on tablets press and can change significantly.In some cases; flow velocity has exceeded the speed when revolving cup can be processed slag stream of tablets press; and therefore; excessive slag stream is crossed the edge of cupule and is hardened to single piece, thereby need to be in the housing of blast furnace factory building comes broken and remove the slag overflowing with heavy digger.

According to a first aspect of the invention, provide a kind of slag stream dispersing apparatus, this slag stream dispersing apparatus comprises rotary slag tablets press, and wherein, this tablets press comprises rotary distributor; And wherein, this equipment also comprises multiple flexible and extendable portions, the plurality of flexible and extendable portion is around the circle distribution of this rotary distributor and be configured to radially extend from this rotary distributor.

The invention provides a kind of equipment to solve the problem that slag slime flux goes out during dry slag granulation; wherein; this equipment has flexible and extendable portion and overflows material with fragmentation; make this material finally become the form that can be removed, and needn't adopt broken single of cable operated excavator through hardened material.

Preferably, the each flexible and extendable portion in flexible and extendable portion comprises: multiple chain links, hauberk skirt shape part, multiple through hinged portion's section or wire cable.

Preferably, this flexible and extendable portion comprises metal.

Compared with thering is not too good conductive material, metal have good conductivity therefore slag unlikely adhere to extension.

Preferably, metal comprises the one in steel or iron.

Preferably, flexible and extendable portion dangles from rotary distributor when static at tablets press.

Preferably, rotary distributor comprises the one in cupule or plate-like portion.

According to a second aspect of the invention, in dry slag granulation equipment, to overflowing the method that material processes, comprise: around the circumference of dry slag tablets press, multiple flexible and extendable portions are set, wherein, the plurality of flexible and extendable cage structure Cheng Yugan slag tablets press rotates together and radially extends from dry slag tablets press; Make tablets press and the rotation of flexible and extendable portion; Slag stream is applied to tablets press; The flexible and extendable portion of rotating by use carrys out the slag in the broken slag stream that overflows tablets press; And the slag stream through broken is deposited on to a distance apart from tablets press.

Preferably, through the deposition of overflowing slag stream of fragmentation, exceeded outside the end of flexible and extendable portion of rotation.

Now with reference to the accompanying drawings the example of slag stream dispersing apparatus according to the present invention and method is described, in the accompanying drawings:

Fig. 1 shows the example that wherein can use dry slag granulation equipment of the present invention;

Fig. 2 shows the problem suffering from conventional rotating-type dry slag granulation equipment;

Fig. 3 is according to equipment of the present invention example in use;

Fig. 4 is the example of equipment according to the present invention when static;

Fig. 5 is according to the exploded view of the part of the equipment of Fig. 3 example;

Fig. 6 shows the sectional view through a part of Fig. 3;

Fig. 7 shows some alternate embodiment of the flexible and extendable portion for using at the equipment of Fig. 3 and Fig. 4;

Fig. 8 shows the other embodiments of the flexible and extendable portion for using at the equipment of Fig. 3 and Fig. 4; And

Fig. 9 shows the substituting connection section of the flexible and extendable portion for using at the equipment of Fig. 3 and Fig. 4.

Fig. 1 shows the example of dry slag granulation equipment 1.Fine structure can change; but major parts comprises rotary granulator; this rotary granulator generally includes rotary distributor; for example plate-like portion or cupule 2; this cupule 2 is applicable to rotate and be arranged on support portion 3 and drive shaft 4 around medullary ray 5, and drive shaft 4 is driven by the controllable drive unit (not shown) of the speed of rotation that can change cup.This drive unit can be arranged in support portion or other places.Slag is supplied to the center 5 of rotary cupule 2 via guide portion 8 from blast furnace or other molten slag sources.Conventionally, guide portion is the form of the open slot made of refractory materials, and this is more less than being configured to pipeline cost.Rotary cupule 2 is shown as flat dish, but more commonly, cupule is concave surface, and molten slag stream is fallen this concave surface from guide portion.Tablets press cupule can be taked different shape, such as flat dish, or has the tablets press cupule of protruding bar, fin-shaped portion or the curved paddle of radially extending from central point; Or there is the cupule of level and smooth or step-like sidepiece.Equipment 1 is sealed by a wall or some walls 7 according to the shape of equipment, and wherein, guide portion 8 is through wall 7.

In example shown in Figure 1, in a distance of the medullary ray 5 apart from rotation cupule 2, be positioned with ring groove 6, wherein, the top edge of the groove At The Height that remains at low levels compared with cupule 2.Alternatively, between the first wall 10 of rotary cupule and ring groove, be also provided with guiding surface 9, this guiding surface down extends from rotary cupule.Equipment 1 can cover (not shown) and fully be sealed by the top of wall 7 is arranged; and wall can be inwardly or by spraying cooling gas and have cooling effect along wall; so that the reduction of the temperature of case, thereby contribute to the slag through granulation being cured.

The problem being solved by the present invention shown in Figure 2.A large amount of slags falls on rotation cupule 2 every now and then, rather than is fractured into small-particle, and slag stream 11 overflows on the baseplate zone of support portion (or flowing on guidance surface 9 in the situation underflow that is provided with guidance surface 9) and with after fixing.This proper operation through curing material obstruction rotary granulator 2 of single, and therefore must be broken, wherein, this common use must enter the heavy equipment of the closed region of blast furnace housing and granulation apparatus 1.If the cycle between mineral aggregate is in batch not enough to allow to complete cleaning within the available time, is not convenient and may there is potential safety hazard.

As shown in Figure 3, the present invention solves this problem by rotation cupule 2 being arranged to multiple flexible and extendable portions, the extension of the plurality of flexibility dangle from edge or the bottom surface of cupule when static at cupule (referring to Fig. 4), but during operation, owing to having the effect of centrifugal force of cupule time rotational of flexible and extendable portion, the extension of the plurality of flexibility radially extends from cupule 2.Then the extension 12 of these rotations collides the slag overflowing 11 departing from from the edge of cupule and slag 11 is broken for to clinker 13, and this clinker 13 can more easily be removed subsequently compared with single solid piece.

In Fig. 5 and Fig. 6, illustrate in greater detail a concrete embodiment.Fig. 5 shows on the cupule drive unit 14 how tablets press cupule 2 to be arranged on cupule drive unit stand 16.As example, the form that flexible and extendable portion is chain and being fixed on by chain holding plate 15 in the appropriate location of tablets press cupule 2 belows.The end chain link of chain can be attached to holding plate by being hooked on the pin 17 on the upper surface that is positioned at plate, and this plate is subsequently by remaining in suitable position against the substrate of tablets press cupule through screw or other stationary installations 18 of holding plate 15 and cupule drive unit 14.This also can see in Fig. 6.Cupule drive unit 14 can be attached to tablets press cupule independently by screw or other stationary installations 19.

The form that flexible and extendable portion 12 takes is not limited to chain, and can be can be in use from be roughly converted to any flexible layout of extended position in the rest position of tablets press cupule below.Other example has been shown in Fig. 7.Fig. 7 a shows the hinged metal block 20 with junction surface 21.Fig. 7 b shows wire cable 22, and Fig. 7 c shows the chain of the another type of the chain link 23,24 with different size.In the example of Fig. 7 d, thereby offset

staff

25,26 is rotatablely to allow flexible and extendable portion in the fluctuating to a certain degree aspect length around pin 27.Another embodiment shown in Figure 8 is following embodiment: be provided with in this embodiment continuous hauberk skirt shape part 30, each chain link of this continuous hauberk skirt shape part relative to each other moves, so that the slag stream having overflowing carries out broken same effect.Therefore, flexible and extendable portion can be independently or be linked together.

The device that flexible and extendable portion is fixed to tablets press cupule is not limited to pin and the holding plate of Fig. 5 and Fig. 6.For example, alternate embodiments comprises as shown in Figure 9: form diameter than the circlet 32 slightly of the cupule drive shaft 29 in the circular groove being embedded in axle, and by pillar 31, ring 32 is fixed to the larger ring 28 of diameter that is attached with flexible and extendable portion 12.

Ring 28 can have the structure identical with the flexible and extendable portion that is attached to it.In most of the cases, this is fixed on each flexible and extendable portion the certain position place of the surrounding of ring naturally.Wire rings on ring is the same with wire cable extension with being engaged in use, and extension 12 is by the circle distribution around tablets press cupule 2 by centrifugal force.

Claims

1. a slag stream dispersing apparatus, described equipment comprises rotary slag tablets press, wherein, described tablets press comprises rotary distributor; And wherein, described equipment also comprises multiple flexible and extendable portions, described multiple flexible and extendable portions distribute and are configured to radially extend from described rotary distributor around described rotary distributor.

2. equipment according to claim 1, wherein, the each flexible and extendable portion in described flexible and extendable portion comprises multiple chain links, hauberk skirt shape part, multiple hinged portion's section or wire cable.

3. equipment according to claim 1 and 2, wherein, described flexible and extendable portion comprises metal.

4. equipment according to claim 3, wherein, described metal comprises the one in steel or iron.

5. according to the equipment described in any one in aforementioned claim, wherein, described flexible and extendable portion dangles from described rotary distributor when static at described tablets press.

6. according to the equipment described in any one in aforementioned claim, wherein, described rotary distributor comprises the one in cupule or plate-like portion.

7. one kind to the method that material is processed of overflowing in dry slag granulation equipment, described method comprises: multiple flexible and extendable portions are set around dry slag tablets press, and described multiple flexible and extendable cage structures become rotate and radially extend from described dry slag tablets press with described dry slag tablets press; Make described tablets press and the rotation of described flexible and extendable portion; Slag stream is applied to described tablets press; With the slag the next broken slag stream overflowing from described tablets press of described flexible and extendable portion of rotation; And by a distance being deposited on through the described slag stream of fragmentation apart from described tablets press.

8. method according to claim 7, wherein, deposits to such an extent that exceed the end of the described flexible and extendable portion of rotation through the described slag stream overflowing of fragmentation.