KR200163396Y1 - Apparatus for sorting ferric substances from sludge containing such ferric substances utilizing magnetic discs - Google Patents

Abstract

The present invention relates to a steel scale automatic continuous separation device in sludge configured to be capable of continuously separating and recovering iron scale contained in wastewater sludge of a steel mill by a simple and efficient configuration using magnetic rotating plates.

According to the present invention, a sludge inflow tank (10) into which sludge to be treated is introduced, and a casing (20) to which the sludge in the sludge inflow tank (10) is widened to an appropriate width through a sludge outflow nozzle (1) and is supplied from the upper portion of the sludge And a plurality of magnet rotating plates 3 arranged in parallel directly below the sludge of the upper portion of the upper casing 20, and vortices against the sludge entering below the magnetic rotating plate 3 in the casing 20. Scrapers (5) and scale outlets (9) installed so as to separate the rotary blades (6) and the iron scale adsorbed to the respective magnetic rotating plates (3) from the copper magnetic rotating plate (3) to be discharged and recovered to a predetermined place. It provides a sludge iron scale automatic continuous separation apparatus characterized in that the configuration comprising a.

Description

Iron scale automatic continuous separation device in sludge {APPARATUS FOR SORTING FERRIC SUBSTANCES FROM SLUDGE CONTAINING SUCH FERRIC SUBSTANCES UTILIZING MAGNETIC DISCS}

The present invention relates to an apparatus for efficiently separating and recycling the iron scale contained in the sludge in the treatment of wastewater sludge in an ironworks plant containing a large amount of iron scale, and in particular, to simplify the configuration of the apparatus. The present invention relates to an iron-scale automatic continuous separation device in sludge designed to further increase the efficiency of scale separation.

In steelmaking, continuous casting, and hot rolling of steel mills, a large number of factories containing magnetic powders and other various substances such as iron oxide powder generated during rust of steel surface and gas cutting of hot materials Wastewater is generated, and in the plant wastewater treatment plant, sedimentary sludge that accumulates in the sedimentation tank is usually discharged from the tank periodically, landfilled in the air, and then landfilled or other environmental waste treatment as necessary. Disposal is usually done.

However, since the sludge generated from the wastewater of the steel mill includes a relatively large amount of recyclable iron scale, the iron scale in the sludge can be easily separated and recycled to the steelmaking process at the water treatment site where such sludge occurs. It is highly desirable in terms of resource recycling and environmental management, 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 has to be solved, and sludge accumulated in the wastewater flowing into the sedimentation tank during such plant wastewater treatment has to be discharged from the tank every suitable cycle, and the scale of recyclable iron from this type of sedimentary sludge is treated. It is an object of the present invention to provide a device capable of easily separating the bay from the water treatment plant site, in particular, a device capable of achieving a high efficiency scale separation recovery operation while simplifying the configuration of the device.

Conventionally, in some industrial fields, such as cutting metals, iron-based separators using magnets have been used, but this is suitable for separating coarse particles of relatively large particles such as cutting chips from cutting coolant. 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. In addition, a device for installing a magnetic filtration device on a pipe in which sludge flows and periodically separating and recovering the iron scale adsorbed thereon has been proposed or a device using a cylindrical magnetic drum has been proposed. There are problems such as low level or excessive configuration space due to excessive component volume. All.

Therefore, the present invention is a device suitable for separating iron scale from sludge with high iron scale content such as wastewater sludge in a steel mill with high efficiency, in particular, it has the simplest configuration that requires little installation cost and installation space. It is an object of the present invention to provide an automatic sludge-scale iron separator in sludge that can exhibit improved high-efficiency scale separation recovery performance.

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

2 is a side view of the apparatus;

3 is a block diagram of the sludge outflow nozzle of the device of the present invention,

4 is a configuration diagram of a scale separating means constituted by arranging a plurality of magnet rotating plates in the device of the present invention;

Figure 5 is a block diagram of the vortex generating means of the sludge formed by arranging a plurality of rotary blades of the device of the present invention in parallel.

Explanation of symbols on the main parts of the drawings

1: sludge ejection nozzle 2: rotating shaft

3: magnetic rotating plate 4: driving motor

5: scraper 6: vortex generating rotary blade

7: drive motor 8: sludge discharge port

9 scale outlet 10 sludge inlet tank

11: overflow passage 12: axis of rotation

20: casing

The present invention for achieving the above object is a sludge inlet tank into which the sludge to be treated is introduced, a casing supplied in a widely dispersed state through a specially designed sludge in the sludge inlet tank, and a casing through the nozzle. The vortices are generated by a plurality of magnet rotating plates arranged in parallel on a rotating shaft that traverses the inside of the casing so as to magnetically separate the iron scale from the sludge supplied into the casing, and the sludge supplied and processed into the casing. Provided is a sludge iron scale automatic continuous separation device characterized in that it comprises a plurality of vortex generating rotary blades installed to increase the scale separation efficiency.

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 side view of the device.

As shown here, the apparatus of the present invention supplies a sludge inflow tank 10 into which sludge to be treated which is pumped from a sedimentation tank of a wastewater treatment plant of a steel mill, and sludge in the sludge inflow tank 10 are supplied therein. The casing 20 which receives a scale-separation process is received.

Between the sludge inflow tank 10 and the casing 20, a sludge outflow nozzle 1 for discharging and supplying the sludge in the tank 10 to an appropriate width to the upper portion of the casing 20 is connected. A plurality of magnet rotating plates 3 for adsorbing and separating the iron scale in the sludge by magnetic force are disposed directly below the sludge flowing out from the nozzle 1 in the upper portion of the casing 20. It is arrange | positioned and installed in parallel on the one rotating shaft 2 which traverses at regular intervals.

Each of the magnetic rotating plate (3) is configured to form a disc shape by combining a plurality of permanent magnets to have a magnet adsorption force on both sides, the adjacent rotating shaft (3) between the rotating shaft (2) at a suitable interval that the magnetic force can be mutually In parallel. In this way, the rotating shaft (2) provided with the magnet rotating plate (3) is rotated by the drive motor (4).

The scraper 5 for scraping and dropping the iron scale adsorbed on the side surface of this magnet rotating plate 3 is provided in place of both sides of each said magnet rotating plate 3, and this scraper below the said scraper 5 is provided. A scale discharge port 9 for discharging and collecting the iron scale separated from the magnetic rotating plate 3 by the fixed portion 5 is provided.

An overflow passage 11 is formed at one side of the casing 20 so that the sludge supplied into the casing 20 enters only the height indicated by the dashed line in FIG. 2, and the overflow passage 11 is formed. At the distal end of the sludge, a sludge outlet 8 for finally discharging the treated sludge to a predetermined place is formed.

When the sludge in the casing 20 is filled up to the maximum height indicated by the two-dot chain line of Fig. 2, each of the magnetic rotating plate (3) is continuously adsorbed iron scale in the sludge while rotating operation with each lower half submerged in the sludge Serve

A plurality of vortices are generated at the inner bottom of the casing 20 to generate vortices for the sludge that is processed into the casing 20 so that the iron scales in the sludge are adsorbed and separated more efficiently on the magnetic rotating plates 3. Rotating blades 6 are mounted and provided on a rotating shaft 12 as long as they are rotationally driven by the drive motor 7.

In operation, sludge or sludge and plant wastewater collected in the sedimentation tank of the relevant water treatment plant are pumped out of the sedimentation tank by a pump and introduced into the sludge inlet tank 10 of the apparatus. As such, the sludge introduced into the sludge inflow tank 10 is dispersed at a low speed in a state in which the flow rate is once dropped in the tank 10, and is widely distributed through the sludge outflow nozzle 1 and disposed in the upper portion of the casing 20. It will fall evenly toward the plurality of magnet rotating plate (3). The sludge falling toward the magnet rotor plates 3 is included in the sludge as it flows down to the side of each magnet rotor plate 3 rotating at a constant speed along the rotary shaft 2 that is rotated by the drive motor 4. The iron scales that were present begin to be separated and adsorbed on the magnetic side surfaces of the magnetic rotating plates 3, and the sludge passing through the magnetic rotating plates 3 is dropped below the inner bottom of the casing 20. It is filled. As such, when the sludge supply is continued in the casing 20, the sludge is raised to the height at which the overflow passage 11 is connected in the casing 20. In this state, the magnetic rotating plates 3 Each lower half rotates while being submerged in the sludge in the casing 20 to continuously adsorb the iron scale in the sludge. At this time, the rotary blades 6 which are rotated at a constant speed by the driving motor 7 cause vortex or turbulence for the sludge contained in the inner bottom of the casing 20 to stir and mix the sedimentary components in the sludge evenly. Since it is possible to further increase the adsorption separation effect of the iron scale in the sludge by the magnetic rotating plate (3). Iron scales adsorbed on both surfaces of the rotating magnet plates 3 are scraped off with a scraper 5 and then discharged and recovered to a predetermined place through the scale outlet 9. After overflowing the overflow passage 11, the sludge discharge port 8 is finally discharged.

Therefore, the device of the present invention provides a high efficiency to continuously separate and recycle a large amount of iron scale contained in the sludge from the steel mill factory waste water by the above-described configuration and operation, In addition, this effect is a new useful design that can be obtained with a simpler and more efficient device configuration.

Claims (1)

A sludge inflow tank 10 into which sludge to be treated is introduced, a casing 20 through which a sludge in the sludge inflow tank 10 is widened to an appropriate width through a sludge outflow nozzle 1, and is supplied out of the upper portion, and the casing (20) installed to cause vortices against a plurality of magnetic rotating plates 3 arranged in parallel directly below the sludge in the upper portion and sludge entering below the magnetic rotating plate 3 in the casing 20; Rotating blades (6), and the scraper (5) and the scale discharge port (9) provided to separate the iron scale adsorbed on the magnetic rotating plate (3) from the copper magnetic rotating plate (3) and discharged to a predetermined place Iron scale automatic continuous separation device in the sludge characterized by the configuration.