KR200163983Y1 - Apparatus for sorting ferric substances from sludge containing such ferric substances utilizing magnetic bodies - Google Patents

Abstract

The present invention efficiently and efficiently carries out iron scales having magnetic properties from sludges in the process of continuously processing plant wastewater and sludges containing many iron scales generated in processes such as steelmaking, continuous casting and hot rolling of steel mills. The present invention relates to the provision of an automatic sludge separation system for iron scale in sludge which can contribute to resource recycling and improvement of sludge treatment efficiency by enabling automatic separation and recycling.

The present invention provides the iron scale in the sludge to the surface of the magnetic plates (2) (3) while the sludge spread out from the sludge inflow tank (1B) flows down the inclined magnetic plates (2) and the horizontal magnetic plates (3). The scraper 14 and 15 having the parts 14a and 15a formed to be stuck to each other and separated from each other are scraped out of the casing 5 by the driving of the scraper conveyor 4 equipped with the installed scraper. The primary scale separation unit 100 and the cylindrical magnetic drum 10 by rotating the sludge flowing around the circumferential surface of the magnetic drum 10 and not separated from the primary scale separation unit 100. To remove moisture from the scale discharged outside the casing (5) by the secondary scale separator 200 for adsorbing and separating the iron scale of the particles and the scraper conveyor (4) of the primary scale separator (100) Scale / installed on one side of casing (5) It provides a separating device (7) iron scale automatic continuous sludge separation device, characterized in a structure comprising a.

Description

Automatic scale separation of iron scale in sludge {APPARATUS FOR SORTING FERRIC SUBSTANCES FROM SLUDGE CONTAINING SUCH FERRIC SUBSTANCES UTILIZING MAGNETIC BODIES}

The present invention relates to a sludge iron scale automatic continuous separation device designed to efficiently separate and recycle the iron scale contained in the sludge by using a magnetic plate and a magnetic drum in the treatment of sludge containing various iron scales.

In the process of steelmaking, continuous casting and hot rolling of steel mills, factory wastewater containing magnetic powder such as rust of steel surface generated in high temperature process or iron oxide powder generated during gas cutting of hot material and other various substances In the treatment of such plant wastewater, sedimentary sludge accumulated in the settling tank is usually discharged from the tank periodically, landfilled in the air and then landfilled or disposed of through other environmental waste treatment as necessary. Is common.

However, the sludge of this kind contains a relatively large amount of recyclable iron scale, so that it is easy to separate the iron scale in the sludge at the water treatment site where such sludge occurs and to recycle it in the steelmaking process. It is very necessary in terms of more efficient processing and resource recycling, and the present invention has been devised in this need.

As mentioned above, plant wastewater containing a relatively large amount of recyclable iron scales and other lubricant residues and waste solids generated in each process in the steel mill is recycled through an appropriate plant-type water treatment facility for environmental management. The present problem must be solved, and sludge accumulated in the sewage from the sedimentation tank in the process of plant wastewater treatment must be discharged from the tank at appropriate intervals, and reusable iron from this type of sedimentary sludge is treated. It is an object of the present invention to provide an apparatus capable of separating the scales only in a simple and efficient manner at the water treatment plant site.

The apparatus of the present invention for achieving the above object is to effectively separate the iron scale in the sludge by the ideal arrangement of the magnetic plate and the magnetic drum in place of the device as described below, using a magnet The iron-separating device is used in some industrial sites where metals are being cut, but it is suitable for separating the chips from cutting coolant oil, that is, for separating the relatively large particles of shells. It is not suitable for efficiently and continuously separating iron scales of relatively large particles from iron scales of fine particles from iron mill wastewater sludges such as sludges to be treated according to the present invention.

1 is a front view showing the overall configuration of the apparatus according to the present invention,

2 is a plan view of the above apparatus,

3 is an enlarged sectional view taken along the line A-A of FIG.

4A is a front view of the sludge inflow tank in the apparatus according to the present invention,

4B is a cross-sectional view of the upper sludge inlet tank,

Figure 5 is a front view of the scale / water separator of the present invention.

Explanation of symbols on the main parts of the drawings

1A: sludge injection nozzle 1B: sludge inlet tank

1C: Rotary Scraper 1D: Rotary Scraper Drive Motor

2,3 magnet plate 4: scraper conveyor 5: casing

6: scraper conveyor driving motor 7: scale / water separator

7A: Scale / water separator driving motor 7B: Belt

7C: Squeegee Roller 7D: Belt Roller

7E: Leveler 8: Water Reservoir

9,12: Sludge stirring air nozzle 10: Magnetic drum

11: scraper 13: squeegee roller

14,15: scraper 14a, 15a: open part

16: magnetic drum drive motor 17: outlet

18: niche 19: guide

20,21: scale collector 100: primary scale separator

200: secondary scale separator

The present invention, which is studied in the background, periodically pumps sludge precipitated from wastewater from steel mills to a magnetic plate installed inclinedly through a specially designed sludge spray nozzle, and sludge loads between sludge flowing down the slope of the magnetic plate. Due to the sedimentation effect of the magnet's attraction to the iron scale and the specific gravity of the scale itself, only the scale is adsorbed on the magnetic plate, and then the first scale separation unit passes through the first scale separation unit to scrape off the separated scale with a scraper. And a secondary scale separator configured to continuously pass a sludge to a place where a cylindrical magnetic drum is disposed so that the fine iron scale remaining in the sludge is adsorbed and separated on the magnetic drum and scraped off with a scraper. On one side of the negative is a magnetic plate of the primary scale separator After removing the water from the scale scraped from the scale provides an automatic scale separator for iron scale in sludge, characterized in that the scale / water separation device is installed to ensure that only the scale is collected to a predetermined place.

Hereinafter, the present invention will be described in more detail with reference to the embodiments illustrated in the accompanying drawings.

Figure 1 is a schematic front view showing the overall configuration of the device according to the present invention, Figure 2 is a schematic plan view of the device.

As shown here, the apparatus of the present invention firstly separates the iron scale of the relatively large particles from the sludge to be treated, and the sludge that passes through the primary scale separator 100. The secondary scale separator 200 is configured to secondaryly separate iron scales of fine particles not separated by the primary scale separator 100.

The primary scale separation unit 100 is equipped with a sludge ejection nozzle (1A) installed on one side for the sludge pumped from the sedimentation tank of the plant wastewater treatment equipment is introduced into the inside and the sludge discharged to the appropriate width to eject the sludge. The sludge inflow tank 1B and the sludge ejected from the sludge ejection nozzle 1A come into contact with the surface of the sludge inlet and are disposed on the inner bottom of the casing 5 so that the iron scale in the sludge is adsorbed and separated by magnetic force. The magnetic plates (2) (3) and the iron scales adsorbed on these magnetic plates (2) (3) are circulated in one direction along the surface area of the magnetic plates (2) (3) and the casing (5) It is configured to include a scraper conveyor (4) provided to discharge to one side of the.

As shown in FIG. 3, the scraper conveyor 4 is provided with a plurality of scrapers 14 having open portions 14a on both sides and a plurality of scrapers 15 having open portions 15a at the center. It is provided to circulate along the direction shown by the arrow by the drive motor 6.

In the upper part of the casing 5 where the horizontal magnetic plates 3 are installed, the sludge is filled to a certain height, and a sludge stirring air nozzle 9 for preventing the accumulation of solid materials of nonmagnetic material in the sludge is provided. It is arranged.

Inside the sludge inlet tank 1B, as shown in FIG. 4B, a rotary scraper 1C, which is rotationally driven by the drive motor 1D, is installed, and scales and other solid materials in the sludge introduced into the tank 1B are disposed. It is designed to prevent the sedimentation to the bottom of the tank and to smoothly discharge the sludge including these scales and solid materials toward the nozzle 1A. The sludge ejection nozzle 1A provided at one side of the sludge inflow tank 1B is formed to have a wide width as shown in FIG. 4A to widen the sludge introduced into the tank 1B to an appropriate width and the magnetic plate 2. By ejecting into the phase to increase the scale separation effect.

The secondary scale separation unit 200 has a clearance gap 18 between the cylindrical magnet drum 10 which is rotated and driven by the driving motor 16 and the lower circumferential surface of the magnet drum 10. Guide portion 19 for guiding the sludge from passing through the primary scale separation unit 100 through the gap 18 and iron scale adsorbed on the surface of the magnetic drum 10. The scraper 11 is disposed on one side of the magnetic drum 10 so as to be scraped off. The iron scale scraped off from the surface of the magnet drum 10 by the scraper 11 is collected by falling into the scale collector 20, and the gap 18 between the magnet drum 10 and the guide portion 19 is collected. The sludge passed through is finally discharged to the outlet 17. A rubber squeegee roller 13 is provided on the magnet drum 10 to squeeze and remove moisture from the scale adsorbed on the surface of the magnet drum 10.

Meanwhile, water is separated from and removed from the iron scale on one side of the casing 5 through which the iron scale scraped up from the magnetic plates 2 and 3 by the scraper conveyor 4 of the primary scale separator 100 is discharged. A scale / water separator 7 is provided for installation. As shown in Fig. 5, the scale / water separator is provided with a belt 7B inclined to one side, a drive motor 7A and a belt roller 7D for circulating the belt 7B in one direction, and the belt ( It consists of the structure containing the rubber material squeegee roller 7C and the leveler 7E provided in the appropriate position on 7B). The iron scale removed by squeezing moisture through the scale / water separator 7 reaches the upper end of the belt 7B and is then separated by the scale collector 21 and collected by the scale. ) To be collected.

In operation, sedimentary sludge in the steel mill wastewater as described above is deposited at the bottom of the settling tank, pumped up and sent to the sludge inflow tank 1B. The sludge introduced into the tank 1B having a circular cross section opens the magnetic plate 2 inside the casing 5 in a state where it is spread widely through a sludge ejection nozzle 1A connected to a predetermined height from the bottom of the tank 1B. Is blown out. At this time, the scale, solid matter, etc., which settle to the bottom of the sludge inflow tank 1B are scraped up by the rotary scraper 1C driven by the motor 1D, and discharged to the nozzle 1A together with the sludge. The sludge spread and spread through the nozzle 1A flows down the surfaces of the inclined magnetic plate 2 and the horizontal magnetic plate 3, and only the scale of the magnetic body is due to the precipitation phenomenon due to the specific gravity and the adsorption force by the magnet. It sticks to the surface of) (3) and other sludge keeps flowing down. As the sludge flows down the inclined magnetic plate 2, the sludge is reduced by the scrapers 14 and 15 running in the opposite direction along the conveyor 4 in the direction in which the sludge flows down. As it exits through the open portions 14a and 15a of the 15, the magnet adsorptive separation effect on the iron scale in the sludge becomes higher.

The scales adsorbed on the inclined magnet plate 2 and the horizontal magnet plate 3 have several scrapers 14, 15 attached to the scraper conveyor 4 installed to travel along the surface area of the magnet plates 2, 3. It is scraped up by and discharged out of the casing (5). The scraper conveyor 4 is continuously driven by the scraper conveyor drive motor 6.

At this time, the sludge which reaches a certain depth at the bottom where the horizontal magnetic plates 3 in the casing 5 are installed contains solid materials of nonmagnetic material, so that the sludge stir so that these solid materials do not settle on the bottom of the casing 5. Pressure air is injected from the air nozzle 9 and stirred.

The scale discharged out of the casing 5 by the scraper conveyor 4 falls on the belt 7B of the scale / water separator 7 and rises upward by riding the belt 7B to a certain height by the leveler 18. Then, the water component is squeezed out by the spring squeezed by the squeegee roller 7C and then moved to the upper end of the belt 7B to be collected off the scale collector 21. The water flows down to the lower end of the belt 7B and is dropped into the water collecting container 8 to be recovered. This scale / water separator 7 is driven by a belt roller 7D and a drive motor 7A.

As described above, the sludge having passed through the primary scale separating part 100 overflows the wall having a predetermined height and contacts the rotating magnet drum 10, and is formed between the circumferential surface of the lower part of the magnetic drum 10 and the guide part 19. It is discharged through the outlet 17 via the gap 18 provided. The sludge is agitated by the sludge stirring air nozzle 12 while passing through the gap 18, and the fine iron scale not separated from the primary scale separator 100 adheres to the surface of the magnetic drum 10. As such, the scale adsorbed on the surface of the magnetic drum 10 is squeezed by the squeegee roller 13 which is pressed against one side of the magnetic drum 10, and the water is removed by the scraper 11 in a state where water is removed to some extent. It is separated from the surface of the magnetic drum 10 and then collected into the scale collector 20.

Therefore, the present invention can efficiently and automatically separate a large amount of iron scale contained in the sludge from the wastewater of the steel mill by the above-described configuration and operation so that it can be recycled to the steelmaking process. It is to provide a new useful effect that can greatly contribute to the improvement of the efficiency.

Claims (3)

The iron scale in the sludge sticks to the surface of the magnetic plates 2 and 3 while the sludge spreading and spreading from the sludge inflow tank 1B flows down the inclined magnetic plates 2 and the horizontal magnetic plates 3. Primary to scrape and detach the outside of the casing 5 by driving the scraper conveyor 4 having the scrapers 14 and 15 having the portions 14a and 15a formed at different positions. Iron particles of fine particles not separated in the primary scale separator 100 from sludge flowing around the circumferential surface of the magnetic drum 10 by rotating the scale separator 100 and the cylindrical magnet drum 10. Casing to remove moisture from the scale discharged to the outside of the casing (5) by the secondary scale separator (200) for adsorbing and separating the scale and the scraper conveyor (4) of the primary scale separator (100) 5) Scale / water separator installed on one side (7) within the iron scale automatic continuous sludge separation device, characterized in a structure comprising a. 2. The sludge injecting iron scale according to claim 1, wherein the sludge inlet tank 1B is provided with a rotary scraper 1C and a sludge ejection nozzle 1A for widening and ejecting sludge in the tank. Separator. The sludge iron scale automatic continuous separation device according to claim 1, further comprising a sludge stirring air nozzle (9) (12), which stirs the non-magnetic solid matter in the sludge during the treatment of the sludge. .