JP2989924B2 - Filtration unit floating prevention device for metal filtration device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing a filtration unit from floating in a metal filtration apparatus.

[0002]

2. Description of the Related Art Conventionally, there is known a filtration unit in which ceramic tubes formed of alumina porous tubes are laid between upper and lower stages and left and right several times between a left side plate and a right side plate formed of a silicon carbide refractory plate. It is.

[0003]

The above-mentioned known filtering unit is sometimes used for filtering heavy metals such as copper and zinc. In that case, the ceramic tube may be lifted and damaged. It is necessary to prevent this.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a left side plate 3 and a right side plate 4 formed of a silicon carbide refractory plate.
The middle partition plate 6 having a large specific gravity between the left side plate 3 and the right side plate 4 of the filtration unit 2 in which a ceramic tube 5 formed of an alumina porous tube is laid several times vertically and horizontally between the left and right plates 4. A filtration unit floating prevention device of the metal filtration device, and a filtration unit floating prevention device of the metal filtration device in which the left side plate 3 and the right side plate 4 and / or the center partition plate 6 are held down by a holding rod 7. A ceramic tube 5 formed of an alumina porous tube was laid between the left side plate 3 and the right side plate 4 formed of a silicon carbide refractory plate in the filtration chamber 1 in several vertical and horizontal stages. A filtration unit 2 is provided.
Of the metal filtration device in which the left side plate 3 and the right side plate 4 are held down by a holding rod 7.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a filtration chamber for filtering molten metal such as aluminum, copper, and zinc, and 2 denotes a filtration unit housed in the filtration chamber 1. The filtration unit 2 includes a ceramic tube 5 formed of an alumina porous tube, which is provided between a left side plate 3 (also referred to as an end plate) and a right side plate 4 formed of a silicon carbide refractory plate, and a plurality of vertical stages. It has a structure in which a center partition plate 6 having a high specific gravity is provided between the left side plate 3 and the right side plate 4 by several bridges. Further, the ceramic tube 5 may be divided right and left at the center partition plate 6, or may not be divided.

The reason why the ceramic tube 5 is pressed by the central partition plate 6 as described above is to prevent the ceramic tube 5 from being lifted when filtering heavy metals such as copper and zinc. is there.

FIG. 2 shows a countermeasure to be taken when the lifting cannot be prevented by using the center partition plate 6 by pressing the left side plate 3 and the right side plate 4 and / or the center partition plate 6 from above with a holding rod 7. It is a plan.

The left side plate 3 and the right side plate 4 may be pressed from above by a pressing rod 7 without using the center partition plate 6.

Reference numeral 8 denotes a hot water supply port leading to the filtration chamber 1;
Further drain ports 10 are dross removing chambers between the hot water supply port 8 and the filtration chamber 1. The bottom 11 of the dross removing chamber 10
The dross removal chamber 10 and the filtration chamber 1 are connected by a passage 13 at a position higher than the bottom 12 of the filtration chamber 1.

Reference numeral 14 denotes a cover of the filtration chamber 1, and the cover 14
A heater 15 is provided above the filtration chamber 1 on the lower surface of the heater. In addition, an immersion tube heater 16 that hangs down in the dross removing chamber 10 is provided above the dross removing chamber 10 of the lid 14. 1
7 is a motor and 18 is a stirring blade.

[0011]

Next, the operation will be described. When the molten metal such as copper or zinc is supplied from the hot water supply port 8, the molten metal flows into the left and right dross removing chambers 10, and is heated by several dipping tube heaters 16,
Stirring is performed by a stirring blade 18 hanging down from the motor 17.

The stirred molten metal has a slightly raised upper surface, and the dross floating on the surface flows around and is stored in the storage section. Further, the gas contained in the molten metal floats due to the agitation, and degassing is performed.

The dross and the evacuated molten metal are:
The molten metal flows into the filtration chamber 1 through the passage 13, is filtered by the ceramic tube 5 of the filtration unit 2, and is purified and is taken out from the discharge port 8. At this time, since the specific gravity of copper, zinc and the like is high, the ceramic tube 5 may float and be damaged. However, the first embodiment of the present invention employs a Since the plate 6 is provided, the center partition plate 6 has a high specific gravity, so that the ceramic tube 5 is prevented from floating. FIG. 2 shows the center partition plate 6
As a countermeasure when lifting cannot be prevented even by using the method, the center partition plate 6 is pressed by a pressing rod 7 from above. Thereby, it is possible to reliably prevent the floating. Alternatively, the same effect can be obtained even if the left side plate 3 and the right side plate 4 are pressed by the pressing rod 7.

[0014]

As described above, according to the present invention, a ceramic tube 5 formed of an alumina porous tube is provided between the left side plate 3 and the right side plate 4 formed of a silicon carbide refractory plate, and a plurality of vertically arranged ceramic tubes 5 are provided. Since the filtering unit 2 is provided with a center partition plate 6 having a high specific gravity between the left side plate 3 and the right side plate 4 of the filtering unit 2 which is laid over several left and right, the filtering unit floating prevention device of the metal filtering device is used. The provision of the ceramic tube 6 can prevent the ceramic tube 5 from rising. In addition, since the left side plate 3 and the right side plate 4 and / or the center partition plate 6 are held down by the holding rod 7, the filtration unit can be more reliably prevented from floating. Further, in the filtration chamber 1, ceramic tubes 5 formed of alumina porous tubes are laid between the left side plate 3 and the right side plate 4 formed of a silicon carbide refractory plate, and several upper and lower stages and left and right are wrapped. Since the filtration unit 2 is provided and the left side plate 3 and the right side plate 4 of the filtration unit 2 are pressed by the pressing rods 7 to form a filtration unit floating prevention device of a metal filtration device, the same effects as described above are exerted.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a first embodiment.

FIG. 2 is a longitudinal sectional front view of a second embodiment.

FIG. 3 is a cross-sectional plan view of the first embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Filtration room, 2 ... Filtration unit, 3 ... Left side plate, 4 ... Right side plate, 5 ... Ceramic tube, 6 ... Center partition plate, 7 ... Holding rod, 8 ... Hot water supply port, 9 ... Hot water discharge port, 10 ... Dross removal Room, 11 bottom, 12 bottom, 13 passage, 14 lid, 1
5 heater, 16 immersion tube heater, 17 motor, 1
8 ... stirring blade.

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) C22B 9/02 B01D 35/00

Claims (3)

(57) [Claims] 1. A filtration unit in which a ceramic tube 5 formed of an alumina porous tube is laid between upper and lower left and right plates 3 and 4 formed of a silicon carbide refractory plate and several stages vertically and horizontally. 2. A filtration unit floating prevention device of a metal filtration device provided with a heavy central partition plate 6 between the left side plate 3 and the right side plate 4. 2. The holding rod 7 according to claim 1, wherein the left side plate 3 and the right side plate 4 and / or the center partition plate 6 are held.
Floating prevention device for filtration unit of metal filtration device held by. 3. A ceramic tube 5 formed of an alumina porous tube between a left side plate 3 and a right side plate 4 formed of a silicon carbide refractory plate is provided in a filtration chamber 1 in upper and lower stages. A filtration unit 2 is provided,
A filtration unit floating prevention device of a metal filtration device in which the left side plate 3 and the right side plate 4 of the filtration unit 2 are held down by a holding rod 7.