CN103764852B

CN103764852B - Slag dispersal device and method

Info

Publication number: CN103764852B
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: 2015-08-26
Anticipated expiration: 2032-08-07
Also published as: IN2014DN00177A; GB2493969A; EP2748343A1; CN103764852A; WO2013029935A1; EP2748343B1; GB201114763D0; GB2493969B

Abstract

A kind of slag stream dispersal, this equipment comprises rotary slag granulator.This tablets press comprises rotary distributor (2) and multiple flexible extension (12), and multiple flexible extension distributes around rotary distributor, and is configured to from rotary distributor radially.

Description

Slag dispersal device and method

The present invention relates to a kind of slag stream dispersal and a kind of in dry Slag granulation device to overflowing the method that processes of material.This slag material can be: metal matrix, such as iron; Metal oxide, such as titanium oxide; Nonmetal, such as the slag that the byproduct of metal working process produces; Or its mixture.

Dry slag granulation is relative backward technology; this technology when do not add water with cooling and sclerosis slag use rotary atomizer---being generally cupule or the plate-like portion of rotation---by molten slag (such as, as the iron produced in blast furnace byproduct and obtain) be converted to small-particle.The example of dry slag apparatus and method is given in GB2148330, EP0605472 and EP0804620.The molten slag coming from blast furnace is received within the dry Slag granulation device place for being granulated.But the problem that dry slag granulation meets with is that slag flows to the flow velocity reached on tablets press and can change significantly.In some cases; flow velocity has exceeded the speed when revolving cup can process slag stream of tablets press; and therefore; excessive slag stream is crossed the edge of cupule and is hardened to single block, thus needs in the housing of blast furnace factory building, use the broken slag with removing spilling of heavy digger.

According to a first aspect of the invention, provide a kind of slag stream dispersal, this slag stream dispersal comprises rotary slag granulator, and wherein, this tablets press comprises rotary distributor; And wherein, this equipment also comprises multiple flexible extension, the plurality of flexible extension around this rotary distributor circle distribution and be configured to from this rotary distributor radially.

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 extension and overflows material with fragmentation; make this material finally become the form that can be removed, and need not adopt broken single piece of cable operated excavator through hardened material.

Preferably, each flexible extension in flexible extension comprises: multiple chain link, hauberk skirt part, multiple through hinged portion's section or wire cable.

Preferably, this flexible extension comprises metal.

And have compared with 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 extension dangles from rotary distributor when tablets press is in static.

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

According to a second aspect of the invention, in dry Slag granulation device, the method that spilling material processes is comprised: the circumference around dry slag granulator arranges multiple flexible extension, wherein, the plurality of flexible extension is configured to rotate together with dry slag granulator and from dry slag granulator radially; Tablets press and flexible extension are rotated; Slag stream is applied to tablets press; By using the slag in the slag stream of the next broken spilling tablets press of the flexible extension rotated; And a distance slag stream through fragmentation is deposited on apart from tablets press.

Preferably, through the spilling slag stream of fragmentation deposition beyond rotate flexible extension end outside.

Now with reference to the accompanying drawings the example of slag stream dispersal 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 device of the present invention;

Fig. 2 shows and does at Conventional rotary the problem suffered from Slag granulation device;

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 being in static;

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

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

Fig. 7 shows some alternate embodiment of the flexible extension for using in the equipment of Fig. 3 and Fig. 4;

Fig. 8 shows the other embodiments for the flexible extension used in the equipment of Fig. 3 and Fig. 4; And

Fig. 9 shows the substituting connection section of the flexible extension for using in the equipment of Fig. 3 and Fig. 4.

Fig. 1 shows the example of dry Slag granulation device 1.Fine structure can change; but major parts comprises rotary granulator; this rotary granulator generally includes rotary distributor; such as plate-like portion or cupule 2; this cupule 2 is applicable to rotate around medullary ray 5 and be arranged on support portion 3 and drive shaft 4, 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 from blast furnace or other molten slag sources via guide portion 8.Usually, guide portion is the form of the open slot that refractory materials is made, 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 take different shape, such as flat dish, or has the tablets press cupule from the bar of central point projection radially, fin or curved paddle; Or there is the cupule of level and smooth or step-like sidepiece.Equipment 1 is closed 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, be positioned with ring groove 6 in a distance of the medullary ray 5 apart from rotation cupule 2, wherein, the top edge of groove remains at low levels At The Height compared with cupule 2.Alternatively, be also provided with guiding surface 9 between the first wall 10 of rotary cupule and ring groove, this guiding surface down extends from rotary cupule.Equipment 1 fully can be closed by arranging lid (not shown) to the top of wall 7; and wall can have cooling effect inwardly or by spraying cooling gas along wall; to make the temperature of case reduce, thus contribute to being cured the slag through granulation.

The problem solved by the present invention shown in Figure 2.A large amount of slags falls on rotation cupule 2 every now and then, instead of is fractured into small-particle, and slag stream 11 overflows to around (or flowing on guidance surface 9 in the situation underflow being provided with guidance surface 9) on the baseplate zone of support portion and with after fixing.This material through solidification of single piece hinders the proper operation of rotary granulator 2, and therefore must be broken, and wherein, this uses the heavy equipment that must enter the closed region of furnace shell and granulation apparatus 1 usually.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 potential safety hazard be had.

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

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

The form that flexible extension 12 is taked is not limited to chain, and can be any flexibility layout that can be converted to extended position in use from the rest position be roughly in below tablets press cupule.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, offset staff 25,26 is rotatable around pin 27 thus allows the fluctuating to a certain degree of flexible extension in length.Another embodiment shown in Figure 8 is following embodiment: be provided with continuous print hauberk skirt part 30 in this embodiment, each chain link of this continuous hauberk skirt part relative to each other moves, and carries out broken same effect to have to the slag stream overflowed.Therefore, flexible extension can be independently or be linked together.

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

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

Claims

1. a molten slag stream dispersal, described equipment comprises rotating-type dry slag granulator, and wherein, described tablets press comprises the rotary distributor for receiving the molten slag stream from molten slag source; Wherein, described rotary distributor comprises the one in cupule or plate-like portion; And wherein, described equipment also comprises multiple flexible extension, multiple described flexible extension distributes around described rotary distributor, described flexible extension when described cupule or plate-like portion are in static from the edge of described cupule or plate-like portion or bottom surface pendency; Wherein, in use, described flexible extension is configured to from described cupule or plate-like portion radially.

2. equipment according to claim 1, wherein, each flexible extension in described flexible extension comprises multiple chain link, hauberk skirt part, multiple hinged portion's section or wire cable.

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

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

5. the method that the spilling material in the dry slag granulator of dry Slag granulation device is processed, described tablets press comprises the rotary distributor for receiving the molten slag stream from molten slag source, described rotary distributor comprises the one in cupule or plate-like portion, described method comprises: around dry slag granulator, arrange multiple flexible extension, multiple described flexible extension described cupule or plate-like portion static time from the edge of described cupule or plate-like portion or bottom surface pendency, described flexible extension is configured to rotate with described dry slag granulator and from described dry slag granulator radially, described tablets press and described flexible extension are rotated, slag stream is applied to described tablets press, the described flexible extension rotated is used to come broken from the slag the slag stream that described tablets press overflows, and the described slag stream through fragmentation is deposited on a distance apart from described tablets press.

6. method according to claim 5, wherein, the described slag stream through the spilling of fragmentation deposits exceed the end of the described flexible extension of rotation.