WO2011097914A1

WO2011097914A1 - Device for separating blast-furnace slag from water

Info

Publication number: WO2011097914A1
Application number: PCT/CN2010/079408
Authority: WO
Inventors: 陆松; 陆帅; 张林泉; 张天舒
Original assignee: Lu Song
Priority date: 2010-02-10
Filing date: 2010-12-02
Publication date: 2011-08-18
Also published as: CN101736102B; CN101736102A

Abstract

A device for separating blast-furnace slag from water comprises a chain wheel (3), a chain (1) mounted on the chain wheel (3) and hoppers (2) fixedly connected to the chain (1). Pluralities of hoppers (2) are connected to the chain (1) in series. A feeding apparatus is mounted above the hoppers (2) and comprises a buffer chamber (4). A material sieve (7) is set on the top of the buffer chamber (4) and a turnable plate (5) is set at the bottom of the buffer chamber (4). A longitudinal partition board (6) is vertically set in the buffer chamber (4) and the height of the longitudinal partition board (6) is less than that of the wall of the buffer chamber (4).

Description

Blast furnace slag slag water separation equipment

The invention relates to a blast furnace slag slag water separating device, which is specially designed for iron and steel enterprises to treat iron slag. Say

Background technique

In the production of iron and steel enterprises, a large amount of slag is generated. After the red hot slag is pressurized by pressure water, it is rapidly granulated into sand-like particles. These sand-like particles containing a large amount of water have to be precipitated and passed through the book.

The filtration process separates the solid particles from the water, and the separated water can be recycled, and the solid particles are used as building materials. Existing slag water separation equipment such as "Jiaheng Method" and other slag water separation equipment generally have problems of short draining time, incomplete separation of slag water, serious equipment wear, and short service life.

Summary of the invention

The object of the present invention is to provide a blast furnace slag water separation device with good slag water separation effect and long service life.

To achieve the above object, the present invention adopts the following technical solutions:

The blast furnace slag slag water separating device of the present invention comprises a sprocket, a chain mounted on the sprocket, a hopper fixedly connected to the chain, a plurality of hoppers connected in series on the chain, and a feeding device disposed above the hopper, wherein The feeding device comprises a buffer tank, the upper end of the buffer tank is provided with a material sieve, the lower end is provided with a flap; the buffer tank has a vertically arranged vertical partition, and the height of the vertical partition is smaller than the height of the buffer silo wall.

The hopper comprises a bottom sieve plate and a side wall plate, a front wall plate and a rear sieve plate fixedly connected around the bottom sieve plate, wherein the front wall plate and the rear sieve plate are arranged in parallel, and the bottom sieve plate is provided with a water leakage hole. The upper edge portion of the front panel has an outwardly inclined front flange, and the upper edge portion of the rear screen panel has an inwardly inclined groove; a water storage compartment is disposed below the hopper, and a water outlet is disposed on the water storage compartment.

The flap comprises a hinge shaft and a fin plate fixedly connected to the hinge shaft, the hinge shaft is horizontally mounted on the wall of the buffer chamber, and the tilt shaft is fixedly mounted with the tilt adjustment gear at least one end, and the plurality of flaps Arranged at the lower end of the buffer bin, the tilt adjusting gears on the adjacent flaps are engaged with each other, and at least one of the tilt adjusting gears is fixedly connected with a pull rod, and the pull rod is drivingly connected with the adjusting mechanism.

The adjustment mechanism includes a screw threadedly coupled to the buffer chamber, one end of the screw being hinged to the drawbar and the other end being coupled to the adjustment hand wheel.

After adopting the above technical solution, the blast furnace slag water separation device has the following advantages:

A) The double setting of the feed material sieve and the buffer tank utilizes the principle of material feeding, which greatly enhances the anti-scour ability and avoids the intense water flow directly impacting the hopper, thereby prolonging the service life and reducing the running cost. B) The buffer tank has a simple structure, which disperses the water flow, reduces erosion damage to subsequent parts, and is easy to replace. C) The passive acceptance of the incoming material is adopted. The hopper is only subjected to scouring at the initial stage. After the thin material is formed, all the layers are subjected to scouring, and the hopper has almost no scouring wear. D) The equipment is flexible to install and has low requirements on the area. According to the water content of the conveyor belt, the length of the chain and the number of hoppers are determined. E) Compared with the traditional bottom filtration method, the floor space is greatly reduced, which is about 1/6 of the floor space of the bottom filtration method. Today, saving land is saving money, and reducing the pool area also greatly reduces the pool. With capital investment, the workload of the law is less than 1/20 of the low filtration method. F) While reducing the floor space, the draining time is greatly lengthened, which is 6 to 12 times longer than the existing Jiaheng method. G) Compared with the Mingte method, the device has no stirrer structure, does not require a large number of wear-resistant linings, does not require the use of underwater bearings, and has a long spindle, which greatly reduces the routine maintenance workload and reduces the failure rate. H) The system adopts the concept of slag filter residue, which can filter out finer water slag and make the slag content in the discharged water lower, thus reducing the wear of the slag water on the slurry pump and improving the service life of the slurry pump; The workload of the grab truck has reduced the amount of slag cleaning in the slag pool, thereby reducing the impact on the operation of the blast furnace and at the same time saving water. DRAWINGS

1 is a schematic structural view of an embodiment of the present invention;

Figure 2 is a side view showing the structure of the embodiment of Figure 1;

Figure 3 is a partial view of the portion A of Figure 1;

Figure 4 is a longitudinal sectional view of the hopper;

Figure 5 is a schematic view of the structure of the flap.

detailed description The invention is further described below in conjunction with the drawings and specific embodiments.

As shown in FIG. 1 and FIG. 2, the blast furnace slag water separation device according to the present invention comprises a sprocket 3, a chain 1 mounted on the sprocket 3, a hopper 2 fixedly connected to the chain, and a plurality of hoppers 2 connected in series. On the chain 1, the sprocket 3 is drivingly connected to the power unit, and a feeding device is disposed above the hopper 2. The feeding device comprises a buffer tank 4, the upper end of the buffer tank 4 is provided with a material sieve 7, the lower end is provided with a flap 5, the material sieve 7 is provided with a large separation sieve 71; and the buffer tank 4 is provided with a vertically disposed vertical partition plate 6. The height of the longitudinal partition 6 is smaller than the height of the wall of the buffer chamber 4, and the vertical partition 6 divides the buffer chamber 4 into two parts.

As shown in FIG. 4, the hopper 2 includes a bottom sieve plate 21 and a side wall 22, a dash panel 23 and a rear sieve panel 24 fixedly connected around the bottom sieve panel 21, and the front panel 23 and the rear sieve panel 24 are parallel. It is provided that the bottom sieve plate 21 is provided with a water leakage hole 25. Of course, in order to improve the drainage efficiency, a water leakage hole may be provided on the rear sieve plate 24, or the sieve mesh may be directly used as the bottom sieve plate 21 and the rear sieve plate 24. The material so that the water in the slag water can escape through the bottom and rear of the hopper 2. The upper edge portion of the dash panel 23 has an outwardly inclined front flap 26, and the upper edge portion of the rear screen panel 24 has an inwardly inclined groove 27; a water storage tank 8 is disposed below the hopper 2, and a water storage tank A drain port 9 is provided on the 8th. When the hopper 2 of this structure is arranged, the front flange 26 of the upper wall 23 overlaps the rear screen of the front hopper, and the groove 27 of the upper screen 24 is followed by a hopper. Covered by the front panel, it is quite seamlessly connected with the front and rear hoppers, which can minimize the gap between the two hoppers, so as to prevent the slag from leaking directly from the gap between the two hoppers without passing through the hopper 2.

As shown in FIG. 3 and FIG. 5, the flap 5 includes a hinge shaft 51 and a fin 52 fixedly connected to the hinge shaft. The hinge shaft 51 is horizontally mounted on the wall of the buffer chamber 4, and the hinge shaft 51 is fixed at least at one end. The tilting adjustment gear 53 is mounted, and the plurality of flaps 5 are arranged at the lower end of the buffer tank 4, and the tilt adjusting gears 53 on the adjacent flaps 5 are engaged with each other. At least one of the tilt adjusting gears 53 is fixedly connected with a pull rod 54 and a pull rod 54 Connected to the adjustment mechanism drive.

The adjustment mechanism includes a screw 55 that is threadedly coupled to the buffer chamber 4. One end of the screw 55 is hinged to the pull rod 54 and the other end is coupled to the adjustment hand wheel 56. Of course, other adjustment mechanisms such as an electric adjustment mechanism that operates by the motor drive lever 54 or the tilt adjustment gear 53 can be used.

When used, the red hot slag is rapidly granulated into sand-like particles after being excited by pressurized water. The water flows through the slag into the material sieve 7, and the large separation sieve 71 separates the large solids, and the rest enters the buffer tank 4. Since the vertical partition 6 divides the buffer tank 4 into two relatively small compartments, directly enters The slag water of the buffer tank 4 first enters one of the bins, and rapidly accumulates a certain thickness of slag water in the bin, and the accumulated slag water can prevent the falling slag from hitting the flap 5 and the hopper 2, reducing the pair The threat of the life of the flap 5 and the hopper 2. When the ash accumulated in the bin below the sifter is piled up to a certain thickness, the excess slag will pass through the upper and lower ends of the longitudinal partition 6 into another bin, so that a certain thickness can be accumulated in a short time. The ash is used to prevent the impact damage caused by the falling slag, and it can ensure a large enough drainage area, prolong the drainage time, and improve the water efficiency.

The flap with adjustable tilt angle 5 can adjust the width of the water filter gap to adapt to different working conditions. When the adjusting hand wheel 56 is rotated, the pulling rod 54 is moved to drive the tilt adjusting gear 53 to rotate, and the angle between the adjacent two fins 52 is adjusted, so that the width of the gap between the two fins 52 can be changed.

After the slag water buffered by the flap 5 has fallen into the hopper 2, there is no impact force, and the slag ash is filtered through the water leakage hole 25 or the filter screen on the bottom sieve plate 21, and the ash ash is transported to the chain after the hopper 2 continues to operate for a while. One side of the wheel 3 is tipped over the conveyor belt, and the filtered water leaks into the water storage tank 8 below the hopper 2 and is finally discharged through the water discharge port 9.

Claims

Claim

1. Blast furnace slag slag water separation equipment, comprising a sprocket (3), a chain (1) mounted on the sprocket (3), a hopper (2) fixedly connected to the chain, and a plurality of hoppers (2) connected in series in the chain (1) Above, a feeding device is arranged above the hopper (2), characterized in that: the feeding device comprises a buffer tank (4), the upper end of the buffer tank (4) is provided with a material sieve (7), and the lower end is installed with The flap (5); the buffer tank (4) has a vertical partition (6), and the height of the longitudinal partition (6) is smaller than the height of the buffer wall (4).

The blast furnace slag water separation apparatus according to claim 1, wherein: the hopper (2) comprises a bottom sieve plate (21) and a side wall plate (22) fixedly connected around the bottom sieve plate (21). ), dash panel (23) and rear screen panel (24), dash panel (23) and rear screen panel

(24) Parallelly disposed, the bottom sieve plate (21) is provided with a water leakage hole (25), and the upper edge portion of the front wall plate (23) has an outwardly inclined front folding edge (26), and a rear sieve The upper edge of the plate (24) has a groove (27); a water storage tank (8) is arranged below the hopper (2), and a water discharge port (9) is arranged on the water storage tank (8).

The blast furnace slag water separation device according to claim 1 or 2, characterized in that the flap (5) comprises a hinge shaft (51) and a fin plate (52) fixedly connected to the hinge shaft, the hinge The shaft (51) is horizontally mounted on the wall of the buffer tank (4), and the tilt shaft (53) is fixedly mounted on at least one end of the hinge shaft (51), and the plurality of flaps (5) are arranged at the lower end of the buffer tank (4). The tilt adjusting gears (53) on the adjacent flaps (5) are in mesh with each other, and at least one of the tilt adjusting gears (53) is fixedly connected with a pull rod (54), and the pull rod (54) is drivingly connected with the adjusting mechanism.

The blast furnace slag water separating apparatus according to claim 3, wherein: said adjusting mechanism comprises a screw (55) screwed to the buffer chamber (4), the screw

One end of the (55) is hinged to the tie rod (54) and the other end is connected to the adjustment handwheel (56).