CN216639565U

CN216639565U - Slag fishing tool for ladle of LF (ladle furnace)

Info

Publication number: CN216639565U
Application number: CN202123215617.XU
Authority: CN
Inventors: 杜光远
Original assignee: Jiangsu Zhuhong Forging Co ltd
Current assignee: Jiangsu Zhuhong Forging Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-05-31
Anticipated expiration: 2031-12-20

Abstract

The utility model discloses a slag salvaging tool for a ladle of an LF (ladle furnace), which comprises a slag salvaging hopper, wherein the upper edge of the slag salvaging hopper is uniformly and fixedly connected with four first lifting lugs, the upper edge of the slag salvaging hopper, which is positioned between two adjacent first lifting lugs, is an arc smooth transition edge, each arc smooth transition opening is vertically and upwards arranged, the lower end surface of the slag salvaging hopper is in an arc shape protruding downwards, a movable plate is connected in the slag salvaging hopper in a sliding mode along the vertical direction, and a supporting block is vertically and fixedly connected to the middle part of the lower end surface of the movable plate. The slag salvaging device realizes the slag salvaging work of the steel ladle with the nominal capacity of 60T, particularly the smaller steel ladle, does not need special operation stations for salvaging slag, does not increase space, has high safety, and can purposefully discharge the molten steel in the slag salvaging hopper when the slag salvaging hopper is used by arranging the abutting block and the through hole, thereby not only improving the slag salvaging efficiency of the slag salvaging hopper, but also avoiding the waste of the molten steel.

Description

Slag fishing tool for ladle of LF (ladle furnace)

Technical Field

The utility model relates to the technical field of slag dragging equipment of ladle of an LF (ladle furnace), in particular to a slag dragging tool for the ladle of the LF.

Background

In the refining process of the LF furnace, a part of slag sometimes needs to be fished out of a ladle, at present, a manipulator slag raking machine or a slag fishing platform machine is generally used at home and abroad, the slag fishing amount is large, and the problem that a large ladle drags slag, for example, a ladle with a nominal capacity of more than 80T has a large slag surface diameter and is more advantageous when exceeding 100T, but the existing slag fishing technology has the following problems: one, the steel mill need have the space of installing and dragging for sediment machinery, and just can operate at special slagging-off station, when the space is not enough, there is very big potential safety hazard, two, to nominal capacity be less than or equal to 60T ladle, especially littleer ladle, the slag face diameter is little, it is big material usefulness to belong to with above-mentioned sediment machinery of dragging for sediment, the operation difficulty, the slag is very rare in the ladle, for example basicity R is CaO SiO2 when being a little higher than 1.0, above-mentioned sediment machinery of dragging for sediment is difficult to drag for the sediment, and traditional sediment dish of dragging for can together be dragged for the molten steel, after the sediment is dragged for repeatedly, the waste of molten steel has been caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects of difficult operation and poor applicability of the traditional ladle slag fishing tool for an LF (ladle furnace) in the prior art, and provides the slag fishing tool for the ladle of the LF.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a drag for sediment instrument for LF stove ladle, includes drags for the sediment fill, drag for the sediment fill and go up along four first lugs of even fixedly connected with, drag for the sediment fill and be located and be arc rounding off limit on between two adjacent first lugs, and the equal vertical setting up of opening of every arc rounding off, the lower terminal surface of dragging for the sediment fill is the bellied arc downwards, it has the fly leaf to drag for to have vertical direction sliding connection in the sediment fill, the vertical fixedly connected with in terminal surface middle part supports the piece under the fly leaf, drag for in the sediment fill between diapire and the lower terminal surface vertically set up with support piece complex through-hole.

In the slag salvaging tool for the ladle of the LF furnace, each first lifting lug is fixedly connected with a first chain, and one end, far away from the first lifting lug, of each first chain is connected with a main hook of an external crown block.

In the slag salvaging tool for the ladle of the LF furnace, the upper end face of the movable plate is symmetrically and vertically fixedly connected with two second lifting lugs, each second lifting lug is fixedly connected with a second chain, and one end, far away from the second lifting lug, of each second chain is connected with an auxiliary hook of an external crown block.

In the slag salvaging tool for the ladle of the LF furnace, the longitudinal section of the abutting block is in an isosceles trapezoid shape, and the diameter of the upper end face of the abutting block is larger than that of the lower end face.

In the slag salvaging tool for the ladle of the LF furnace, the lower side of the inner wall of the slag salvaging hopper is fixedly connected with a fixing ring, and the fixing ring is positioned below the movable plate.

In the slag salvaging tool for the ladle of the LF furnace, the outer diameter of the slag salvaging hopper is matched with the diameter of the inner cavity of the ladle of the LF furnace, and a uniform gap is reserved between the edge of the slag salvaging hopper and the inner wall of the ladle of the LF furnace.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model realizes the slag salvaging work of the steel ladle with the nominal capacity of 60T, especially the smaller steel ladle, carries out the high-efficiency slag salvaging operation, realizes that the slag is slightly thin (the alkalinity of the slag is slightly lower, R is CaO/SiO2 and is slightly higher than 1.0), carries out the high-efficiency slag salvaging operation, saves the power consumption by more than or equal to 50 percent compared with the traditional slag salvaging, improves the metallurgical effect of the slag, prolongs the service life of the steel ladle, because a part of the slag with low alkalinity is salvaged, then lime is supplemented to improve the alkalinity, the equipment is only a tool, is easy to manufacture, has low investment cost, does not need a special operation station for salvaging the slag, does not increase the space, and has high safety.

2. According to the slag salvaging hopper, the abutting block and the through hole are arranged, when the slag salvaging hopper is used, molten steel in the slag salvaging hopper can be drained in a targeted mode, the slag salvaging efficiency of the slag salvaging hopper can be improved, and waste of the molten steel can be avoided.

Drawings

Fig. 1 is a schematic structural diagram of a slag dragging tool for a ladle of an LF furnace, according to the present invention;

fig. 2 is a schematic top view of a slag salvaging tool for a ladle of an LF furnace according to the present invention;

fig. 3 is a schematic structural diagram of a slag dragging tool for a ladle of an LF furnace during operation.

In the figure: the slag removing device comprises a slag bucket 1, a first lifting lug 2, a first chain 3, a fixing ring 4, a movable plate 5, a second lifting lug 6, a second chain 7, a through hole 8 and a supporting block 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, a drag for sediment instrument for LF stove ladle, including dragging for the sediment fill 1, the external diameter of dragging for sediment fill 1 and the inner chamber diameter phase-match of external LF stove ladle, it leaves even clearance to drag for between the edge of sediment fill 1 and the LF stove ladle inner wall, drag for the preferred 20# class steel casting or the forging of material of sediment fill 1, drag for on the sediment fill 1 along four first lugs 2 of even fixedly connected with, drag for sediment fill 1 to lie in two adjacent first lugs 2 between along being arc rounding off limit, and the equal vertical upwards setting of opening of every arc rounding off, drag for the lower terminal surface of sediment fill 1 for the bellied arc downwards, drag for in the sediment fill 1 along vertical direction sliding connection have fly leaf 5, the vertical fixedly connected with in terminal surface middle part supports piece 9 under fly leaf 5, drag for between sediment fill 1 between diapire and the lower terminal surface vertically set up and support piece 9 complex through-hole 8.

Every first lug 2 equal fixedly connected with first chain 3, every first chain 3 keep away from the one end of first lug 2 all with the main hook connection of external overhead traveling crane.

Two second lugs 6 are symmetrically and fixedly connected to the upper end face of the movable plate 5, a second chain 7 is fixedly connected to each second lug 6, one end, away from each second lug 6, of each second chain 7 is connected with an auxiliary hook of an external crown block, and the first chain 3 and the second chain 7 are heat-resistant chains.

The longitudinal section of the resisting block 9 is in an isosceles trapezoid shape, the diameter of the upper end face of the resisting block 9 is larger than that of the lower end face, a fixing ring 4 is fixedly connected to the lower side of the inner wall of the slag fishing bucket 1, and the fixing ring 4 is located below the movable plate 5.

The utility model can be illustrated by the following operating modes: when in use, as shown in figure 1 in an initial state, the lower end face of a movable plate 5 abuts against the upper end face of a fixed ring 4, a resisting block 9 is inserted into a through hole 8, the side wall of the resisting block 9 is in sliding connection with the inner wall of the through hole 8, the resisting block 9 seals the through hole 8, then the slag salvaging hopper 1 is driven to move by the matching of a main hook of an external crown block and a first chain 3, the slag salvaging hopper 1 enters the inner cavity of a ladle of an LF furnace, steel slag and partial molten steel enter the slag salvaging hopper 1 through an arc-shaped circular sliding edge at the upper edge of the slag salvaging hopper 1, at the moment, the movable plate 5 abuts against the fixed ring 4, the side wall of the resisting block 9 is in sliding connection with the inner wall of the through hole 8, the molten steel is blocked above the movable plate 5 and outside the slag salvaging hopper 1 and cannot enter the through hole 8, so that the through hole 8 and the resisting block 9 can be protected, then the slag salvaging hopper 1 is driven to ascend to the upper part of the molten steel by a main hook of the crown block, and then the movable plate 5 slowly ascend, the movable plate 5 drives the abutting block 9 to be gradually separated from the through hole 8, and because the abutting block 9 is a trapezoid, a gap is generated between the abutting block 9 and the through hole 8, as shown in fig. 3, molten steel in the slag salvaging hopper 1 can flow back to an inner cavity of a ladle of the LF furnace through the gap between the abutting block 9 and the through hole 8, and only steel slag is fished out.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a drag for sediment instrument for LF stove ladle, includes drags for sediment fill (1), its characterized in that, drag for on sediment fill (1) along four first lug of even fixedly connected with (2), drag for on the sediment fill (1) lie in between two adjacent first lug (2) along being arc rounding off limit, and the equal vertical up setting of opening of every arc rounding off, the lower terminal surface of dragging for sediment fill (1) is bellied arc downwards, it has fly leaf (5) to drag for in the sediment fill (1) along vertical direction sliding connection, the vertical fixedly connected with in terminal surface middle part supports piece (9) under fly leaf (5), drag for in sediment fill (1) between diapire and the lower terminal surface vertically set up with support piece (9) complex through-hole (8).

2. The slag fishing tool for the ladle of the LF furnace according to claim 1, wherein each first lifting lug (2) is fixedly connected with a first chain (3), and one end of each first chain (3) far away from the first lifting lug (2) is connected with a main hook of an external crown block.

3. The slag salvaging tool for the ladle of the LF furnace as claimed in claim 1, wherein two second lifting lugs (6) are symmetrically and vertically fixedly connected to the upper end face of the movable plate (5), each second lifting lug (6) is fixedly connected with a second chain (7), and one end of each second chain (7) far away from the second lifting lug (6) is connected with an auxiliary hook of an external overhead travelling crane.

4. The slag salvaging tool for the ladle of the LF furnace as claimed in claim 1, wherein the longitudinal section of the resisting block (9) is isosceles trapezoid-shaped, and the diameter of the upper end face of the resisting block (9) is larger than that of the lower end face.

5. The slag salvaging tool for the ladle of the LF furnace as claimed in claim 1, wherein a fixing ring (4) is fixedly connected to the lower side of the inner wall of the slag salvaging hopper (1), and the fixing ring (4) is located below the movable plate (5).

6. The slag salvaging tool for the ladle of the LF furnace as claimed in claim 1, wherein the outer diameter of the slag salvaging hopper (1) is matched with the diameter of the inner cavity of the ladle of the LF furnace, and a uniform gap is left between the edge of the slag salvaging hopper (1) and the inner wall of the ladle of the LF furnace.