CN108554626A - Blast furnace granulated slag deironing apparatus - Google Patents

Abstract

The invention discloses a kind of blast furnace granulated slag deironing apparatus comprising：Slag ditch, cinder-flushing water pipe, water slag groove, collection slag bath, belt conveyor, separator, Ji Tiechi, grain slag transport device, collecting-tank and water circulating pump, wherein, collect grain slag and washing slag water that slag bath receives water slag groove discharge, and washing slag water is on the one hand filtered to and is discharged to collecting-tank, grain slag is on the other hand transferred to belt conveyor；And the strap end of belt conveyor is provided with separator, Ji Tiechi is isolated from grain slag and fallen into the abrasive grit being mingled in grain slag by separator carrying magnetic, remaining impurity is transferred to grain slag transport device.The water of collecting-tank is pumped in water circulating pump, to be recycled.Separator goes out slag sluicing system in grain slag in strap end, to realize effective recycling to being mingled with abrasive grit in grain slag.The blast furnace granulated slag deironing apparatus of the present invention is added based on prior art invention, is conducive to cost-effective.

Description

Blast furnace slag iron removal device

technical field

The invention relates to the field of recycling of iron and steel metallurgical equipment, in particular to a blast furnace slag iron removal device.

Background technique

Slag is a by-product of blast furnace ironmaking products. During the tapping process, due to the short separation time between slag and iron, or the poor efficiency of separation equipment, certain metal iron particles are often mixed in the slag. At present, most iron and steel enterprises directly sell water slag to cement production enterprises, and the iron particles mixed in it are not recycled. Considering the large amount of slag in iron and steel enterprises, the amount of iron inclusions is considerable. Therefore, on the basis of the existing technology, recycling the slag mixed with iron is beneficial to save costs.

Therefore, there is a need in the art for a new blast furnace slag iron removal device to facilitate the recycling of slag-laden iron.

Contents of the invention

In view of the above-mentioned problems in the prior art, the object of the present invention is to provide a blast furnace slag iron removal device, which is composed of a slag ditch, a slag flushing water pipe, a slag ditch, a slag collecting tank, a belt conveyor, a separating device, an iron collecting Pool, water slag transport device, sump and circulating water pump, among them, by setting a magnetic separation device, for example, setting the driving wheel of the belt conveyor as a magnetic wheel, so that when the water slag is conveyed to the separation device by the belt, due to the separation The magnetism of the device enables the slag and iron in the water slag to be adsorbed near the separation device and separated from the water slag with the rotation of the belt, so as to realize the effective recovery of iron particles in the water slag.

Therefore, according to one embodiment of the present invention, a blast furnace slag iron removal device is provided, which includes: slag ditch, slag flushing water pipe, water slag ditch, slag collection pool, belt conveyor, separation device, iron collection pool, water slag transportation device, sump and circulating water pump, among which,

One end of the slag ditch receives the slag discharged from the blast furnace, and the other end is connected to the inlet end of the slag ditch to transfer the slag to the slag ditch;

The slag flushing water pipe is installed near the inlet end of the water slag ditch, so that the water from the circulating water pump passes through the slag flushing water pipe to perform water quenching treatment on the slag discharged from the slag flushing ditch, form dregs;

The slag collection pool is connected to the outlet of the slag ditch to receive the slag and slag washing water discharged from the slag ditch, and on the one hand, the slag washing water is filtered and discharged to the sump, on the other hand transferring water slag to the belt conveyor placed obliquely above the slag collection tank; and

The separation device is provided at the belt end of the belt conveyor, and the separation device is magnetic, and the iron particles mixed in the water slag are separated from the water slag and dropped into the iron collection pool, and the remaining impurities are transferred to the The slag transport device.

In one embodiment, the separation device may comprise a magnetic drive pulley of the belt conveyor, and a separation plate disposed below and adjacent to the belt end of the belt conveyor.

Further, the separation plate may be in an inverted V shape, and the inverted V shape includes a first side close to the belt conveyor and a second side far away from the belt conveyor, and the iron collecting pool is arranged on the inverted V Below the first side of the inverted V shape, and the water slag transport device is arranged below the second side of the inverted V shape.

In one embodiment, the water collection tank may be located below the slag collection tank to recover the slag flushing water filtered and discharged from the slag collection tank.

Further, the sump can be connected to the circulating water pump, so that the recovered slag flushing water passes through the circulating water pump to be reused for water quenching treatment of blast furnace slag.

The advantage of the present invention is that by adding a simple iron removal device on the basis of the existing blast furnace water slag flushing process, the iron particles mixed in the slag can be effectively recovered, thereby solving the problem that the iron particles in the steel furnace slag cannot be recovered in the past , and the process is simple and the input cost is low.

Description of drawings

The drawings described here are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is a schematic diagram of a blast furnace slag iron removal device according to an embodiment of the present invention.

Explanation of symbols in drawings

1: blast furnace; 2: slag ditch; 3: water slag ditch; 4: slag collection pool; 5: belt conveyor; 6: separation plate; 7: water slag transport device; 8: iron collection pool; 9: water collection pool ; 10: flushing slag water pipe; 11: circulating water pump; 12: driving wheel.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some, not all, embodiments of the present invention. Based on the implementation of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

A blast furnace slag iron removal device according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to Figure 1, a blast furnace water slag iron removal device includes: slag ditch 2, slag flushing water pipe 10, water slag ditch 3, slag collection pool 4, belt conveyor 5, separation device, iron collection pool 8, water slag transportation Device 7, sump 9 and circulating water pump 11.

In the above blast furnace slag iron removal device, one end of the slag ditch 2 receives the slag discharged from the blast furnace 1, and the other end is connected to the inlet end of the slag ditch 3 to transfer the slag to the slag ditch 3; The water pipe 10 is installed near the inlet end of the slag ditch 3, so that the water from the circulating water pump 11 passes through the slag flushing water pipe 10 to perform water quenching treatment on the slag discharged from the slag ditch 2 to form water slag; To the outlet end of the water slag ditch 3 to receive the water slag and slag flushing water discharged from the water slag ditch 3, and on the one hand filter the slag flushing water and discharge it to the sump 9, on the other hand transfer the water slag to an inclined place The belt conveyor 5 above the slag pool 4; and the belt end of the belt conveyor 5 is provided with a separation device, the separation device is magnetic, and the iron particles mixed in the water slag are separated from the water slag and fall into the iron collection pool 8 , and the rest of the impurities are transferred to the water slag transport device 7.

The above-mentioned separation device may include a magnetic driving pulley 12 of the belt conveyor 5 and a separation plate 6 disposed below and adjacent to the belt end of the belt conveyor 5 . As shown in FIG. 1 , the magnetic driving pulley 12 is also located at the belt end of the belt conveyor 5 .

As shown in FIG. 1 , the separating plate 6 may be in an inverted V shape, and the inverted V shape includes a first side close to the belt conveyor 5 and a second side away from the belt conveyor 5 . The iron collecting pool 8 is arranged under the first side of the inverted V shape, and the slag transport device 7 is arranged under the second side of the inverted V shape.

The water collection tank 9 can be located below the slag collection tank 4 to recycle the slag flushing water filtered and discharged from the slag collection tank 4 .

The sump 9 can be connected to the circulating water pump 11, so that the recovered slag washing water passes through the circulating water pump 11 and the slag washing water pipe 10, and returns to the water slag ditch 3 to spray the blast furnace slag transferred from the slag ditch 2 for water quenching , so as to realize the recycling of flushing slag water.

The operation process of the blast furnace slag iron removal device is described below.

During operation, as shown in FIG. 1 , blast furnace 1 discharges blast furnace slag, and blast furnace slag is transferred to water slag ditch 3 through slag ditch 2 . When the slag enters near the entrance of the slag ditch 3 , water from the circulating water pump 11 sprays the slag through the slag flushing water pipe 10 for water quenching, and then slag is formed in the slag ditch 3 . Then, the slag flushing water and water slag flow to the slag collecting tank 4 . In the slag collection tank 4, on the one hand, the slag washing water is filtered and discharged to the sump 9 below the slag collection tank 4; on the other hand, the water slag is transferred to the belt conveyor 5.

Next, on the one hand, after the filtered slag flushing water enters the sump 9, it is pumped to the circulating water pump 11, and then enters the slag flushing ditch 3 through the slag flushing water pipe 10, and continues to spray the blast furnace slag discharged from the slag ditch 2 for further cleaning. Water quenching treatment. In this way, the recycling of the flushing slag water is realized.

On the other hand, a magnetic driving pulley 12 is provided at the belt end of the belt conveyor 5 . Therefore, when the water slag passes through the driving wheel 12, due to the magnetism of the driving wheel 12, the iron particles mixed in the water slag are adsorbed on the belt, and then leave the water slag with the rotation of the belt, and are separated from the separation plate 6 under the action of gravity. Close to the gap between the first side of the belt conveyor 5 and the belt conveyor 5, it falls into the iron pool 8; while the rest of the impurities in the slag are not affected by the magnetic force, due to the inertia along the separation plate 6 away from The second side of the belt conveyor 5 drops to the water slag transport device 7 . In this way, the effective recovery of iron particles contained in water slag can be realized.

It should be noted that, in this document, the terms "comprising", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element. In addition, "front", "rear", "left", "right", "upper", and "lower" in this text all refer to the placed state shown in the drawings. In addition, the term "connection" herein includes both direct connection and indirect connection.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (5)

1. a kind of blast furnace granulated slag deironing apparatus, including：Slag ditch, cinder-flushing water pipe, water slag groove, collection slag bath, belt conveyor, separation Device, Ji Tiechi, grain slag transport device, collecting-tank and water circulating pump,

It is characterized in that,

One end of the slag ditch receives the slag of blast furnace discharge, and is connected to the arrival end of the water slag groove in the other end to incite somebody to action Slag is transferred to the water slag groove；

The cinder-flushing water pipe is mounted near the arrival end of the water slag groove, so that the water from the water circulating pump passes through The cinder-flushing water pipe carries out Water Quenching to the slag being discharged from the slag ditch, forms grain slag；

The collection slag bath is connected to the outlet end of the water slag groove to receive the grain slag and washing slag water of the water slag groove discharge, and On the one hand washing slag water is filtered and is discharged to the collecting-tank, grain slag is on the other hand transferred to slant setting in the collection slag bath The belt conveyor of top；And

The strap end of the belt conveyor is provided with the separator, the separator carrying magnetic will be in grain slag The Ji Tiechi is isolated from grain slag and fallen into the abrasive grit being mingled with, remaining impurity is transferred to the grain slag transport device.

2. blast furnace granulated slag deironing apparatus as described in claim 1, which is characterized in that the separator includes that the belt passes Send the carrying magnetic driving wheel of machine and below the strap end of the belt conveyor and adjacent to the separation of strap end setting Plate.

3. blast furnace granulated slag deironing apparatus as claimed in claim 2, which is characterized in that the separating plate is in inverted V-shaped, the V Shape includes close to the first side of the belt conveyor and the second side far from the belt conveyor, the Ji Tiechi are set The lower section in the first side of the inverted V-shaped is set, and the grain slag transport device is arranged under the second side of the inverted V-shaped Side.

4. blast furnace granulated slag deironing apparatus as described in claim 1, which is characterized in that the collecting-tank is located under the collection slag bath Side, to recycle the washing slag water for filtering and being discharged from the collection slag bath.

5. blast furnace granulated slag deironing apparatus as claimed in claim 4, which is characterized in that the collecting-tank is connected to the recirculated water Pump so that recycling washing slag water via the water circulating pump to be used further to Water Quenching blast furnace cinder.