JPS62125805A - Slurry concentrating device - Google Patents

Abstract

PURPOSE:To miniaturize the titled device by accelerating the settlement of dust, completely sedimenting magnetic matter and nonmagnetic matter, and improving the performance. CONSTITUTION:A slurry is injected into the main thickner body 1 from a slurry feed pipe 16, a flocculant is added from a flocculant injecting pipe 17, and the mixed flocs of nonmagnetic matter and magnetic matter are formed. An electromagnet 7 provided at the lower part of a nonmagnetic bottom plate part 6 is energized while rotating a rake 4 by a driving gear 3. Consequently, the flocs contg. magnetic matter are magnetized and attracted by the electromagnetic 7 along with nonmagnetic matter, forcibly settled, collected by the rake 4 into an extracting cone 14, and discharged to the outside by a slurry pump 15. The clarified water freed of flocs overflows from an overflow trough 18.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Separation This invention is based on magnetic and non-magnetic materials 8:v! This invention relates to a slurry concentrator that separates dust by adding a polymeric a fruit agent to a slurry in which dust containing J is suspended to form flocs, and forcibly attracting and sedimenting the flocs by magnetism.

Conventional technology In general, FeO and Fe
, O, is collected by scrubbing with a Venturi scrubber or wet Cottrell, but at this time the dust is suspended in water and becomes slurry. Then, the dust was separated from the slurry using a membrane using a clarifier or Shirafuna. Also, the skim was reused.

Conventionally, sedimentation and separation of Q dust in this clarifier or Shirafuna has been carried out by natural sedimentation due to the difference in specific gravity between dust particles and water.

[5] Since the grain size of the dust is extremely fine, it is difficult for the dust to settle and separate. M
Was.

In addition, many inventions have been made for the purpose of concentrating and separating magnetic materials, such as magnetic separators and classifiers using magnets, but even if these devices are used to concentrate slurry, the When magnetic and non-magnetic materials are mixed,
There was a drawback that the non-magnetic material was separated from the magnetic material, the dust was not completely separated by sedimentation, and a clear supernatant could not be obtained.

Purpose This invention provides a slurry IJ that sediments and separates dust from a slurry containing a mixture of magnetic and non-magnetic materials as described above.
This was done to eliminate the drawbacks of the D-ray device, and by promoting the settling of dust, being able to completely separate magnetic substances 2 and non-magnetic substances by sedimentation, and improving the performance, It is an object of the present invention to provide a slurry concentrating device that can be downsized.

4 Bottom This invention was made to achieve the above object, and provides a slurry in which a mixed slurry of magnetic and non-magnetic substances is allowed to fall and settle in Shirafuna, and this is removed by forcing it with a rake. In the wire apparatus, a flocculant inlet for injecting a flocculant is provided in the upper part of the flocculent to form a mixed floc of magnetic and non-magnetic materials from the mixed slurry. An electromagnet is placed in the paper section.

The above-mentioned slurry D-line device injects the agent into the mixed slurry from the flocculant injection port to form a mixed floc of magnetic and non-magnetic materials, and this mixed floc is magnetically attracted by an electromagnet installed at the bottom of the Shirafuna. The slurry is then forced to fall and settle, thereby concentrating the slurry.

Examples of this invention are shown below.

Figures 1 and 2 show a slurry concentrating device according to the present invention, in which a shaft 2 is vertically disposed in the center of a cylindrical Shirafuna main body 1, and a drive length IT3 connected to the upper end thereof. It is designed to be rotated by One end of a rake arm 5 to which a rake 4 is attached is connected to the lower end of the shaft 2, so that the rake 4 slides on the bottom surface of the Shirafuna main body l as the shaft 2 rotates. It has become.

A non-magnetic bottom plate s6 is provided at a part (in two places in the drawing) of the bottom of the Shirafuna main body l. This bottom plate portion 6 is formed of, for example, 5US (austenitic stainless steel) or an aluminum plate.

An electromagnet 7 is provided below the non-magnetic low plate portion 6. Figure I-P8 is an electromagnet core, 9 is a low magnet leg (soft-54), and 10 is an electromagnet coil.

As shown in FIG. 3, this magnet 7 has a pair of magnet legs (E-beams) 9 that are magnetically insulated by a non-magnetic plate 6, and when the magnet coil 10 is energized, a pair of magnet legs (E-beams) 9 The magnetic flux α generated between the legs 9 is configured to pass through the interior of the Shirafuna body 1.

When the rake 4 passes over the electromagnet 7 (
In the range indicated by arrow A in FIG. 2, parking is turned off by a limit switch 11 attached to the upper end of the shaft 2. As shown in FIGS. 4 and 5, this limit switch 11 has a rotating piece 12 that is fixed to a shaft 2 and rotates 4iir together with the shaft 2.
While the rake 4 passes over the electromagnet 7, the switch contact 1
By kicking 3, the electricity to the electromagnet 7 is cut off. The number of electromagnets 7 is Shirafuna body 1.
It is selected as appropriate depending on the size of the image.

A sampling cone 14 is provided at the center of the bottom plate of the Shirafuna main body 1, and the concentrated slurry collected in the sampling cone 14 is discharged to the outside by a slurry pump 15.

In addition, a slurry inlet pipe 162 and a coagulant injection 'ii7 are placed in the upper part of the Shirafuna main body 1. Note that 18 in the figure
is an overflow gutter.

The slurry IJ a-ray device described above injects slurry into the Shirafuna main body 1 from the slurry inflow t16, adds a polymer flocculant from the flocculant tube 17, and forms a floc containing a mixture of non-magnetic and magnetic materials. form.

This floc formation may be performed before injection into Shirafuna.

Then, the rake 4 is rotated by the driving device 3 while the electromagnet 7 is energized.

Then, the flocs containing magnetic substances are magnetized and attracted by the electromagnet 7 along with non-magnetic substances, are forcibly settled, are collected by the rake 4 into the extraction coil 14, and are extracted to the outside by the slurry pump 15. The clarified liquid from which the °C flocs have been separated then overflows from the overflow gutter 18.

Here, when the rake 4 passes over the electromagnet 7, that is, within range A in FIG. 2, the limit switch 11 operates to cut off current to the electromagnet 7 and demagnetize it. As a result, when the electromagnet 7 is constantly energized, the flocs that have been raked to the center by the rake 4 are again attracted by the magnetic field and deposited on the electromagnet 7, and are deposited on the extraction cone 14.
This prevents problems such as not being able to remove spiders and overloading the rake 4. Also, as a result of this, there is no need to worry about using SUS or the like for the rake 4, since the rake itself does not cause magnetic attraction, and normally A is sufficient.

If the area of the leg 9 of the stone 7 in contact with the slurry is made as small as possible, the degree of magnetic flux sliding can be increased, and the flocs can be attracted effectively.

When I conducted the above slurry (I highly compressed L1C construction experiment 3), the t8 result was different depending on the starting material and the interest rate of the non-refined proboscis.
In a dust slurry 1-cubicer test containing approximately 2%.3 of , M, and Fs, it was confirmed that the tC groaning speed was accelerated by more than 10 times by the magnet.

Effects As described above, the present invention involves adding a concentrated slurry to a mixed slurry of magnetic and non-magnetic materials to form flocs, and sucking and sinking the flocs using an electromagnet modified by Shirafuna. By setting 5 to 5, it is possible to promote the settling of dust and achieve its complete separation, and the slurry can be reduced by 1. It has excellent effects such as making it possible to improve the processing capacity of fft.

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing an embodiment of the present invention, Fig. 2 is a plan view of the embodiment, and Fig. 3 is a 'd!' of Shirafuna according to the embodiment. A partially enlarged view showing the mounting part of the magnet, Figure 4 is in the same husband's example! A plan view showing a magnetic limit switch, and FIG. 5 is a plan view of the same limit switch. 1...Shirafuna body 4...Rake 6...Non-magnetic bottom plate part 7...T6 magnet 11...Limit switch 16...Slurry inflow pipe 17...ji Collection, collection and injection pipe Applicant 1 person from outside Sumitomo Heavy Industries, Ltd.

Claims (1)

[Scope of Claims] 1. A slurry concentrator in which a mixed slurry of magnetic materials and non-magnetic materials is allowed to fall and settle in a thickener, and is scraped and removed by a rake, in which the magnetic materials and non-magnetic materials are removed from the mixed slurry. A slurry concentrating device characterized in that a flocculant injection port for injecting a flocculant is provided at the top of the thickener to form mixed flocs, and an electromagnet is disposed at the bottom of the thickener to suck and precipitate the flocs. 2. The slurry concentrating device according to claim 1, wherein the electromagnet is de-energized while the rake passes over the electromagnet.