CN114107580A

CN114107580A - Dry granulation turntable

Info

Publication number: CN114107580A
Application number: CN202111326526.5A
Authority: CN
Inventors: 张金良; 朱立江; 张富信; 马超宇; 黄超; 费利东; 张磊; 路凯华; 黄忠源; 刘猛
Original assignee: Beijing Metallurgical Equipment Research Design Institute Co Ltd
Current assignee: Beijing Metallurgical Equipment Research Design Institute Co Ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-03-01

Abstract

The invention discloses a dry granulation turntable which is applied to a granulation chamber of dry granulation, and comprises a shell, a water tank, a water inlet pipe and a rotary pipe body, wherein the upper end surface of the shell is a surface for receiving molten slag, the upper end of the rotary pipe body is vertically connected with the lower end of the shell, a pipe cavity of the rotary pipe body is communicated with the inside of the shell, the lower end of the rotary pipe body penetrates into the water tank, the water inlet pipe is arranged in the rotary pipe body, the upper end of the water inlet pipe extends into the shell, and the lower end of the water inlet pipe extends out of the water tank.

Description

Dry granulation turntable

Technical Field

The invention relates to the technical field of smelting slag treatment, in particular to a dry-method granulation turntable.

Background

The high-temperature liquid slag is a byproduct in the steel production process, the discharge temperature of the high-temperature liquid slag is up to 1500 ℃, a large amount of high-temperature waste heat is contained, sensible heat and low-temperature waste heat resources of the high-temperature liquid slag are not well recycled, most of slag is dumped at present to cause resource waste, the environment is polluted, ecological landscapes are damaged, land is occupied, and the high-temperature liquid slag is not well utilized. The domestic and foreign slag treatment methods mainly include hot stuffiness, hot splashing, water quenching, air quenching, roller method and the like. However, the methods have the defects of large investment, large occupied area, heavy environmental pollution, poor treatment effect and the like.

Disclosure of Invention

In order to solve the problems, the invention provides a dry granulation turntable, which is applied to a granulation chamber for dry granulation and is used for receiving high-temperature molten slag entering the granulation chamber, throwing the high-temperature molten slag out along with the rotation of the turntable, and contacting with cooling air for cooling to form granulated slag. The rotary table comprises a shell, a water tank, a water inlet pipe and a rotary pipe body, the upper end surface of the shell is a surface for receiving molten slag, the upper end of the rotary pipe body is vertically connected with the lower end of the shell, a pipe cavity of the rotary pipe body is communicated with the inside of the shell, the lower end of the rotary pipe body penetrates into the water tank, a water outlet of the water tank is communicated with a water inlet of the cooling module, a water outlet of the cooling module is communicated with a water inlet of the water pump,

the water inlet pipe is arranged in the rotary pipe body, the upper end of the water inlet pipe extends into the shell, the lower end of the water inlet pipe extends out of the water tank and is communicated with the water outlet of the water pump,

the upper end of the water inlet pipe is also communicated with a water separator, and the water separator is a conical shell which is gradually enlarged from bottom to top.

Optionally, the carousel still includes motor, drive mechanism, the motor through drive mechanism with rotary motion transmission to rotatory body.

Optionally, the turntable is of a disc-shaped housing structure.

Optionally, the outer wall sleeve of the rotating pipe body is provided with a supporting sleeve, and the rotating pipe body is supported on the upper end face of the water tank through the supporting sleeve.

Optionally, bearings are provided at both upper and lower ends of the support sleeve.

The dry granulation turntable adopts an open water cooling mode, the water inlet pipe does not rotate along with the turntable and the rotary pipe body, and a rotary joint is not needed. And because the water tank has great volume, consequently can not take place the water course jam phenomenon like rotary joint easily, and the return water pressure is low, can not cause the seepage because of the return water pressure is high like rotary joint easily. The operation stability of the granulating device is greatly improved. In addition, the cooling water can reach almost the whole inner surface of the rotary table through the cooling water distributor, and the cooling effect is better.

Drawings

The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof taken in conjunction with the accompanying drawings.

FIG. 1 is a schematic view showing a granulation chamber;

FIG. 2 is a schematic diagram illustrating cooling of a turntable according to an embodiment of the present invention.

Detailed Description

The embodiments of the present invention will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to like parts.

The dry granulation turntable of the present embodiment is used for a granulation chamber for dry granulation, and a structure of the granulation chamber will be briefly described below. As shown in fig. 1 and 2, the top end of the granulation chamber 2 has an opening for molten slag to enter and an exhaust duct 23, and the lower part of the granulation chamber is communicated with a blast port. In fig. 1, the exhaust duct 23 is provided with an inner cylinder 231, and high-temperature slag is supplied to the granulation chamber 2 through the inner cylinder. Of course, the opening and the exhaust duct 23 may be separately provided, the rotary table 1 penetrates into the granulating chamber from the bottom, and the rotary table 1 is used for receiving the high-temperature slag entering the granulating chamber from the opening, throwing the high-temperature slag out along with the rotation of the rotary table, and contacting with the cooling wind fed from the tuyere for cooling to form granulated slag. It should be noted that the above description of the granulation chamber is merely exemplary, the present invention is not limited to the structure of the granulation chamber, and the rotating disk of the present embodiment may be used as long as it is a rotating disk for receiving molten slag by dry granulation.

The turntable 1 is cooled by an open water cooling mode, and the turntable 1 comprises a shell 40, a base 33, a water tank 32, a water inlet pipe 34, a motor 31, a transmission mechanism 36, a bearing 35, a support sleeve 37, a rotating pipe body 38 and a distributor 39.

The housing 40 has an internal cavity, which may preferably be vertically cylindrical. The upper end surface of the housing 40 is a surface for receiving high temperature slag, and may be made in a concave form.

The rotary pipe body 38 is a rotatable pipe body having a certain wall thickness, and the upper end of the rotary pipe body 38 is vertically connected to the lower end surface of the housing 40, and the pipe cavity thereof is made to communicate with the inner cavity of the housing 40. The outer wall of the rotating pipe body 38 is fitted with a support sleeve 37 and supported on the upper end surface of the water tank 32 by the support sleeve, and preferably, bearings 35 are fitted on both upper and lower ends of the support sleeve. The lower end of the rotating pipe body 38 penetrates into the water tank 32, the water tank 32 is used for containing cooling return water, a water outlet of the water tank 32 is communicated with a water inlet of the cooling module, and the cooling module is used for cooling the outlet water of the water tank. The cooling module may be, for example, a water pool for natural cooling, or may be cooled by other cooling and heat exchanging devices, which is not limited herein. The water outlet of the cooling module is communicated with the water inlet of the water pump.

The water inlet pipe 34 is further arranged in the rotating pipe body 38, the water inlet pipe 34 is a pipe with openings at two ends, the upper end of the water inlet pipe 34 extends to the inner cavity of the shell 40, the lower end of the water inlet pipe 34 extends out of the rotating pipe body 38 and continues to extend out of the water tank 32, and the end part of the water inlet pipe 34, which penetrates out of the water tank 32, is communicated with a water outlet of the water pump.

The outer wall of the rotating tube 38 is connected with the output end of the transmission mechanism 36, the input end of the transmission mechanism 36 is connected with the output end of the motor 31, and the rotating tube 38 is driven to rotate by the motor, so that the rotating disc 1 is driven to rotate.

As can be seen from fig. 2, the water pump inputs cooling water into the water inlet pipe 34 from the lower end, and the cooling water flows out from the upper end of the water inlet pipe 34 into the inner cavity of the housing 40, so that the turntable 1 can be cooled by the cooling water. The flow direction of the cooling water is shown by arrows in fig. 2. From the housing 40, the cooling water again enters the annular space between the water tube 34 and the rotating tube body 38, through which it is discharged into the water tank 32. The outlet of the tank 32 in turn delivers cooling water to the water pump, thereby creating a circulating flow of cooling water.

Furthermore, the upper end of the water inlet pipe 34 is also connected with a water separator 39, the water separator 39 is a conical shell which gradually increases from bottom to top, the lower end of the conical shell is communicated with the upper end of the water inlet pipe 34, and the cooling water flowing out of the water inlet pipe 34 is uniformly dispersed into the shell 40 through the water separator, so that the rotary table is cooled with a better effect.

In the rotary disk 1 of the embodiment, the water inlet pipe 34 is adopted to directly send cooling water into the casing 40, and there is no rotary joint adopted in conventional rotary shaft cooling, and there is no problem that the threaded rotary joint is easy to trip and loose to leak water, and there is no problem that the flange rotary joint is easy to wear and tear at the joint because of rotation, and needs to be replaced regularly. And the cooling return water is temporarily stored in the water tank and is further discharged from the water tank, and the water tank has larger volume, so that the phenomenon of water channel blockage can not occur easily like a rotary joint, and the return water pressure is low, so that the leakage caused by high return water pressure easily like the rotary joint can not occur.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dry granulation turntable is applied to a granulation chamber of dry granulation and is characterized in that,

the rotary table comprises a shell, a water tank, a water inlet pipe and a rotary pipe body, the upper end surface of the shell is a surface for receiving molten slag, the upper end of the rotary pipe body is vertically connected with the lower end of the shell, a pipe cavity of the rotary pipe body is communicated with the inside of the shell, the lower end of the rotary pipe body penetrates into the water tank, a water outlet of the water tank is communicated with a water inlet of the cooling module, a water outlet of the cooling module is communicated with a water inlet of the water pump,

2. The dry granulation carousel as claimed in claim 1, further comprising a motor, a transmission mechanism, the motor transmitting a rotational movement to the rotating tubular body via the transmission mechanism.

3. The dry granulation carousel as claimed in claim 1, wherein the carousel is a disc-shaped shell structure.

4. The dry granulation rotary disc as claimed in claim 1, wherein the outer wall of the rotary tube body is sleeved with a support sleeve, and the rotary tube body is supported on the upper end face of the water tank through the support sleeve.

5. The dry granulation carousel as claimed in claim 4, wherein bearings are provided at both the upper and lower ends of the support sleeve.