JPS61240091A - Molten metal slag removing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a molten metal slag removal device having 0 suction hects for sucking and cooling slag floating in the molten metal.

[Prior Art] Conventionally, slag floating in the molten metal in a molten metal storage tank, tripe, etc. has been configured to be directly sucked by a suction hect.

[Problem that the invention seeks to solve]

However, in general, the thickness of slag is small in storage tanks, triplets, etc., and becomes smaller as slag removal progresses, so molten metal is easily mixed with slag and sucked into the suction hect, reducing slag removal efficiency. In addition, it is necessary to move the suction head over the entire surface of the molten metal, and the equipment required for this movement is expensive and large, requiring further improvements. It was wanted.

An object of the present invention is to make it possible to reliably prevent molten metal from being sucked in by a suction head while sufficiently removing slag in a storage tank or tripe, and to make equipment inexpensive and compact.

[Means to solve the problem]

The characteristics of the present invention include a suction pipe that sucks in molten metal and slag in a mixed state, a separation chamber that separates the molten metal and slag from the suction pipe by specific gravity, and reflux to maintain the molten metal in the separation chamber below a set level. A slag thickness increasing device equipped with a molten metal return path is provided, and a suction head for sucking and cooling the slag is disposed within the separation chamber, and its effects are as follows.

[For production]

In other words, the molten metal and slag in the storage tank or tripe are sucked into the mixed state through the suction pipe, so regardless of the thickness of the slag and even if the suction tube is fixed, the entire amount of slag can be quickly drawn from the storage tank or tripe. It can be removed from etc.

If the cross-sectional area inside the separation chamber is made much smaller than that of the storage tank or tripe, the slag will be thicker due to specific gravity separation in the separation chamber! III & can be formed, and the rise in the molten metal level in the separation chamber can be suppressed by the action of the molten metal return path.
It can be positioned inside or near the top of the slag while being sufficiently separated from the molten metal, and the slag can be sucked in efficiently without sucking in the molten metal.

In addition, the molten metal in the separation chamber is returned to the storage tank, ladle, etc. through the return path, so there is a risk of molten metal loss.

〔Effect of the invention〕

As a result, it is now possible to remove slag in the storage tank, tripe, etc. sufficiently and quickly, while reliably preventing molten metal from being sucked into the suction hector.In addition, there is no need to horizontally move the suction pipe or suction head. It has become possible to efficiently remove slag for 11 years without any equipment trouble, and with inexpensive and compact equipment.

〔Example〕

Next, an embodiment is shown in one drawing.

For example, a tank 111 that stores molten metal (M) of a low melting point metal such as aluminum or zinc with a melting point of 710°C or less is equipped with a suction pipe (2), a separation chamber (3), a molten metal return path (41, etc.). A slag thickness increasing device (4) is fixed such that a part of it is located in the molten metal (M) in tank +17.

The suction pipe (2) is for sucking the molten metal (M) and slag (S) in the tank 11+ in a mixed state, and in order to prevent the molten metal (M) and slag (S) from cooling inside, The entire length thereof is placed in the molten metal (M) in the tank 117.

Suction level S plagiarism ring (6) at the entrance of the suction tube (2)
is provided so that the vertical position of the ring (5) can be changed from the drive section (6@) and the drive section (7a)K.

A valve (V,) is provided in the middle of the suction pipe (2) to allow the molten metal (M) in the suction pipe (2) and the overflow storage chamber (S) to flow back into the tank. ) and rod (7b) to open and close the valve (V,).

The separation chamber (3) is for separating the molten metal (M) and slag (S) sent from the suction pipe (2) through the overflow part (Sa) by specific gravity, and the thickness of the slag layer (S) is The cross-sectional area is extremely small compared to the weight of the tank to increase the tank weight.

The molten metal return path (4) opens the bottom of the separation chamber (3) into the molten metal (M) in the tank, and connects the inside of the tank 11) and the separation chamber (3).
) The molten metal (M) in the separation chamber (3) is refluxed from the separation chamber (3) to the tank weight while maintaining the ratio of the molten metal (M) almost the same. Drive part (6c) and rod (7
c) A valve (W) which can be opened and closed freely over K is provided in the molten metal return path (4) so that the molten metal level (Ll) in the separation chamber (3) can be changed as required.

Connect the inert gas supply path (9) and the 7lux supply path '+10) to the separation chamber (3), and open the separation chamber (3) as needed.
) to suppress the oxidation reaction in the slag (S
) to make it easier to powder by reaction with 7 lux.
L, also a stirring blade (1K) linked to the drive unit (6d) K
is provided in the separation chamber (3) and has a button so that the slag (S) and hook loss can be forcibly mixed.

The suction port (1 ga) of the suction hector +12+ is arranged above the molten metal setting level (L) in the separation chamber (3), and the peripheral wall forming the slag suction path (12b) in the suction hector (12+) A cooling jacket (12c) is provided on the outside of the cooling jacket (12c) formed to cool the peripheral wall with cold water from the cold water supply device 01 and discharge the cooling wastewater to an appropriate location through the pipe (14). Collection device α inversion vacuum pressure control device (16) and suction device Oη
Connect to the suction head (I) in that order, and
It is configured to cool and solidify the slag in the separation chamber (3) and collect it from the rotary valve leg (15a) of the slag recovery device (15).

The suction hexagon is attached to the operating section (lI19) so that it can be raised and lowered freely.

[Another example]

Next, another embodiment will be described.

The type of molten metal (M) to be slag removed may be, for example, a high melting point metal such as steel or a nonmetallic molten metal such as glass. The cooling water may be configured to spray the slag (5), and the slag recovery device H may be equipped with a slag cooling water tank. The configuration can be changed as appropriate.

Connect the suction pipe (2) to the suction pipe (2) in the tank 111 other than the inlet side.
j Placed on the L side of the lug (S), the over 70 part (Sa) may be connected to the separation chamber (3), or it may be connected to the separation chamber (3) without the ring (6) or valve (V,). .

The separation chamber (3) may be arranged entirely in the tank 11J at the slag (S1) or inside or outside the tank.

) The molten metal return path can be made into a normally open type with no slope and equipped with an impeller for forced drainage, in short,
Any material may be used as long as it has the function of refluxing the molten metal (M) in the separation chamber (3) so as to maintain it at a suitable set level (L) or below.

[Brief explanation of drawings]

The drawings are conceptual diagrams showing embodiments of the present invention. (2)... Suction pipe, (3)... Separation chamber, (4)... Molten metal return path, a odor...
・Suction head, prisoner... Slag thickness increasing device, (M)... Molten metal, (S)... Slag.

Claims (1)

[Claims] This is a molten metal slag removal device equipped with a suction head (12) that sucks and cools the slag (S) floating on the molten metal (M), and includes a suction pipe (2) that sucks the molten metal (M) and slag (S) in a mixed state. ), a separation chamber (3) for separating the molten metal (M) and slag (S) from the suction pipe (2) by specific gravity;
) is provided with a slag thickness increasing device (A) equipped with a molten metal return path (4) for refluxing the molten metal (M) of the molten metal (M) of the molten metal (M) to maintain the molten metal (M) below a set level (L), and the suction head (12) is connected to the separation chamber ( 3) Molten metal slag removal device located inside.