CN218115478U

CN218115478U - Slag pit for hot disintegration of steel slag

Info

Publication number: CN218115478U
Application number: CN202221358760.6U
Authority: CN
Inventors: 吴博威; 周良; 赵贵州
Original assignee: Huatian Engineering and Technology Corp MCC
Current assignee: Huatian Engineering and Technology Corp MCC
Priority date: 2022-05-29
Filing date: 2022-05-29
Publication date: 2022-12-23
Anticipated expiration: 2032-05-29

Abstract

The utility model discloses a slag pit for hot disintegration of steel slag. The slag pit cover is hinged to the slag pit body; a slag tray is arranged in the slag pit, a grating plate is arranged in the slag tray, and the grating plate divides the space in the slag tray into a plurality of slag block cavities which are not communicated with each other. The slag pan of the utility model divides the space in the slag pan into a plurality of slag block cavities which are not communicated with each other through the built-in grating; therefore, the steel slag poured into the steel slag separator can be divided into a plurality of outer steel slag blocks, and the workload of subsequent steel slag screening is greatly reduced. The utility model discloses well steel slag is vexed with the surface area of slag pan more general slag pan big, and the degree of depth is more general slag pan shallow, and its inside is provided with the grid board, and the slag pan is vexed with the steel slag heat is big with the vexed spray water area of contact of heat, can accelerate melting slag refrigerated speed, reduces the required time of technology.

Description

Slag pit for hot disintegration of steel slag

Technical Field

The utility model relates to a steel slag is vexed to use equipment, more specifically says, relates to a slag pit is used to steel slag is vexed to heat.

Background

The existing steel slag hot stewing mostly adopts a pit type hot stewing mode, and multi-furnace steel slag is poured into a steel slag hot stewing pit for treatment in a unified mode, so that the hot stewing and charging time is longer because more steel slag needs to be treated at one time; meanwhile, the depth of the hot stuffy pit is deeper, and the steel slag filled in the pit is accumulated at the bottom of the slag pit and is difficult to contact with water, so that the time for achieving the required crushing effect is longer. After the hot smoldering is finished, the slag in the pit needs to be grabbed to the automobile by the excavator to be transported away, and a large amount of dust is generated along with the grabbing and transporting of the excavator, so that the environment pollution is caused. The whole hot-sealing process takes about 15 hours, and the time is long.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide a slag pit for hot stuffiness of steel slag, which can directly carry out hot stuffiness process, reduce hot stuffiness time and reduce hot stuffiness smoke volume.

In order to achieve the aim, the slag pit for hot disintegration of the steel slag comprises a slag pit body, wherein a slag pit cover is hinged on the slag pit body; the slag pit is internally provided with a slag disc, the slag disc is internally provided with a grating plate, and the grating plate divides the space in the slag disc into a plurality of slag block cavities which are not communicated with each other.

Furthermore, the depth of the slag pan is preferably 0.8-1.2 m; the area of the opening of the slag pan is not smaller than the minimum area, and the minimum area = the tonnage of the converter multiplied by the density of the produced slag/the depth of the slag; the unit of slag amount generated by one ton of steel is kiloton; the height of the slag pit is more than 2 times of the depth of the slag tray.

Furthermore, the size of each cell on the grating plate is 200 multiplied by 200mm.

Furthermore, the thickness of the grating plate is between 5 and 20 mm. More than two pairs of trunnions are arranged on two opposite sides of the slag pan.

Furthermore, a plurality of spray heads are arranged on the lower surface of the slag pit cover downwards.

The hot disintegrating slag pit of the utility model is matched with the slag pan with the built-in grating to divide the space in the slag pan into a plurality of slag block cavities which are not communicated with each other; therefore, the steel slag poured into the steel slag separator can be divided into a plurality of outer steel slag blocks, and the workload of subsequent steel slag screening is greatly reduced. After the hot disintegration is finished, the special slag pot for the hot disintegration is directly lifted out, and the grabbing and transporting process of the excavator is eliminated, so that the time for the hot disintegration treatment of the steel slag can be effectively shortened, and the smoke generated in the hot disintegration process of the steel slag is reduced. The time of the whole hot stuffy flow can be greatly shortened, and the production cost of an enterprise is reduced to a certain extent.

Drawings

FIG. 1 is a schematic structural view of a slag pit according to an embodiment of the present invention;

fig. 2 is a schematic view of the slag pit cover of fig. 1 after being opened.

Fig. 3 is a schematic top view of the slag pan of fig. 4.

Fig. 4 is a schematic cross-sectional view of fig. 3.

Fig. 5 is a schematic diagram of the process of use.

Comprises a slag disk 1, a trunnion 2, a grating plate 3, a slag pit 4, a slag pit cover 5 and a spray head 6.

Detailed Description

The invention is further described with reference to the following figures and examples:

in the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The characteristics of the slag pit required for 150 converter production in this example are as follows:

the amount of molten steel slag generated per furnace of a 150t converter was about 5.5m ³ The depth of the slag pan is preferably 0.8-1.2 m; the area of the opening of the slag pan is not smaller than the minimum area, and the minimum area = the converter tonnage multiplied by the density of the produced slag/the slag quantity/the depth of the slag quantity. The amount of slag produced per ton of steel is expressed in kilotons.

The density of the steel slag is calculated by 3 (based on the actual production condition of a steel mill), and the obtained slag amount is 16.5 tons; the slag amount thickness is calculated to be 0.6m,

minimum area of slag pan =150 × 0.165/3/0.6=13.75m ² 。

Therefore, the surface (opening) size of the slag pan body 1 is selected to be about 6 multiplied by 3m, and the depth of the slag pan is 0.8 to 1.2m.

The size of the hot disintegrating slag pit 4 is about 7 multiplied by 2.5m; two slag trays can be placed in one slag pit at the same time. A slag pit cover 5 is hinged on the slag pit body; the slag disc is arranged in the slag pit, the slag disc is internally provided with a grating plate 3, the area of the size of each small grid on the grating plate is about 200 multiplied by 200mm, and the height of the grating plate is preferably 2/3-3/3 of the inner height of the slag disc; the contact surface of the grating plate and the steel slag is coated with a fire-resistant coating, and the whole slag pan for hot coveringProduct of about 11m ³ Two furnaces of molten steel slag can be loaded, the slag tray 1 is provided with two pairs of trunnions 2, the contact area of the slag tray 1 and water sprayed in the hot disintegrating process is large, the cooling speed of the molten steel slag can be accelerated, and the time required by the hot disintegrating process is reduced.

Preferably, 15 spray heads 6 are arranged on the top surface of the interior of the steel slag hot stuffy pit cover 5.

One hot stuffy pit can meet the slag treatment capacity of 4-furnace molten steel, the production rhythm is controlled, the charging time can be controlled within 1 hour, and meanwhile, because the depth of the steel slag in the slag pan is only about 0.6m, the contact surface of the steel slag and water is very large, the hot stuffy process of the steel slag can be greatly accelerated, and the hot stuffy time can be effectively shortened. And after waiting for the steel slag hot smoldering, only need utilize the crane to hang the slag pan out and adorn and transport on the car, do not have the work of excavation, can reduce the flue gas of excavation in-process, shorten the time of slagging tap simultaneously greatly. The total time of the whole hot stewing process can be controlled within 10 hours.

The using process is shown in figure 5: firstly, pouring molten steel slag into a slag tank arranged on a slag tank car when slag is discharged from a converter, and driving the slag tank car from a steel-making workshop to a slag processing workshop;

step two: opening a pit cover of the steel slag hot disintegrating pit, and pouring molten steel slag into a hot disintegrating slag tray from a slag tank;

step three: closing a steel slag hot disintegrating pit cover, spraying water by a spray head in the pit cover, and contacting the water with molten steel slag to carry out a hot disintegrating process;

step four: and opening a pit cover of the steel slag hot stuffy pit, lifting the hot stuffy slag disc out of the steel slag hot stuffy pit by lifting and loading the hot stuffy slag disc into an outward transport automobile, and lifting the empty hot stuffy slag disc into the steel slag hot stuffy pit to wait for the next operation.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a slag pit for steel slag hot disintegration which characterized in that: the slag pit cover is hinged to the slag pit body; a slag tray is arranged in the slag pit, a grating plate is arranged in the slag tray, and the grating plate divides the space in the slag tray into a plurality of slag block cavities which are not communicated with each other;

wherein, the size of each cell on the grating plate is 200 multiplied by 200mm;

the thickness of the grating plate is between 5 and 20 mm.

2. The slag pit for hot disintegration of steel slag according to claim 1, wherein: more than two pairs of trunnions are arranged on two opposite sides of the slag pan.

3. The slag pit for hot disintegration of steel slag according to claim 1, wherein: and a plurality of spray heads are arranged on the lower surface of the slag pit cover downwards.