JPH06238430A - Precast block for top end part of ladle - Google Patents

Abstract

PURPOSE:To protect a top end part and improve the brick holding effect by embedding the mounting jig which is forcibly fixed to the top end part of the ladle and holds the bricks on the side wall and prevents the bricks from falling away. CONSTITUTION:Mounting jigs 3 (nuts) of the prescribed number are preliminarily embedded in precast blocks 1 of the size where the top end part of the ladle is divided into an arbitrary number in the circumferential direction, and the precast blocks are fixed and mounted by the bolts 2 from the outside of the ladle steel sheel 4 of the top end part or from the lower side of the steel sheel for holding the bricks. The size of the mounting jigs 3 (nuts) are appropriately determined according to the size of the precast block 1, and in addition, studs (anchors) are mounted, and fixation of the precast blocks 1 is reinforced. The material of the precast blocks 1 is appropriately selected, for example, alumina- silica. This constitution protects the top end part and reduces the damages of the blocks by appropriate selction of the material, and also reduces the repair cost for the ladle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed type ladle top end precast block for the purpose of protecting the roof of the ladle top and protecting the side wall bricks.

[0002]

2. Description of the Related Art In general, the top of a ladle has an iron skin for burying bricks embedded inside, and is made of a refractory material such as castable, plastic material, stamp material, etc. to prevent deformation and damage due to the heat of the molten metal. Protected.

However, the above refractory material is severely damaged due to cracks caused by the heat of the molten metal due to calcination of the refractory material, erosion due to the scattering of molten metal and slag, and abrasion due to the discharge of slag. Because it depends largely on the strength of the refractory itself,
There is a problem that it breaks and falls off during use and damages the iron skin for brick pressing.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is designed so that it can be forcibly fixed to a ladle iron skin,
By installing a precast block in which a mounting jig (nut) is embedded, it is to prevent damage to the iron shell.

[0005]

The gist of the present invention is that a mounting jig (nut) is embedded so that it can be forcibly fixed to the iron crust at the top of the ladle, and the side wall bricks are held down and prevented from falling off. It is in the precast block for the top of the ladle.

[0006]

EXAMPLES Examples of the present invention will be described below. A predetermined number of mounting jigs (nuts) 3 are embedded in advance in a precast block 1 having a size obtained by dividing the ladle top end into an arbitrary number in the circumferential direction, and from the outside of the ladle iron skin 4 at the top end, or Fix it with the bolt 2 from the lower side of the iron skin 6 for holding the brick.

If the size of the precast block 1 is too large, it will be too heavy, and the construction will be difficult, and there will be a risk of cracking due to distortion of the iron skin. There is a need. It is necessary to determine the size of the mounting jig (nut) 3 appropriately according to the size of the precast block 1, and further to mount the stud (anchor) 7 to strengthen the fixing of the precast block 1.

The material of the precast block 1 can be appropriately selected depending on the use conditions such as alumina-silica system, high alumina, alumina-magnesia, spinel, magnesia, magnesia-chrome.

By the above method, the protection block at the top end of the ladle can be reinforced and fixed. In the figure, 5 is a refractory brick.

[0010]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, the protection of the top end and the effect of holding down the bricks can be strengthened, and by optimizing the material, the block itself is less damaged, and Due to damage / deformation and reduced use of refractories, ladle repair costs were significantly reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a ladle lining according to the present invention.

FIG. 2 is an enlarged detailed explanatory diagram of a portion B in FIG.

FIG. 3 is a development view of a main portion of a ladle lining according to the present invention.

[Explanation of symbols]

 1 Precast block 2 Bolt 3 Mounting jig (nut) 4 Ladle iron skin 5 Fireproof brick 6 Brick retainer iron skin 7 Stud (anchor)

 ─────────────────────────────────────────────────── (72) Inventor Masayuki Ogi 2-14-29 Aoi Higashi-ku Nagoya-shi (72) Inventor Takashi Iwamoto 4-115 Kyomachi Tajimi-shi

Claims (1)

[Claims] A precast block for the top of a ladle, characterized in that it is embedded with a mounting jig that is forcibly fixed to the top of the ladle to prevent the sidewall bricks from being pressed down and prevented from falling off.