CN113203292A

CN113203292A - Slag dilution treatment device

Info

Publication number: CN113203292A
Application number: CN202110406495.8A
Authority: CN
Inventors: 董择上; 王淑婵; 郭天宇; 罗慧君; 李鹏; 姚心
Original assignee: China ENFI Engineering Corp
Current assignee: China ENFI Engineering Corp
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-08-03

Abstract

The invention discloses a slag dilution treatment device, which comprises a treatment tank and a dispersion assembly, wherein the treatment tank comprises a tank body, a chamber is arranged in the tank body, the tank body is provided with a feed inlet, a discharge outlet, a gas inlet and a gas outlet, the feed inlet, the discharge outlet, the gas inlet and the gas outlet are all communicated with the chamber, cooling gas is suitable for entering the chamber through the gas inlet and flowing out of the chamber from the gas outlet, liquid slag is suitable for entering the chamber through the feed inlet and being discharged out of the chamber from the discharge outlet, and the dispersion assembly is used for dispersing the liquid slag entering the chamber through the feed inlet into slag particles. The dilution slag treatment device has the characteristics of waste heat recovery, water saving, safety and reliability.

Description

Slag dilution treatment device

Technical Field

The invention relates to the technical field of metallurgy, in particular to a depletion slag treatment device.

Background

The depleted slag is the residue after secondary treatment of the slag from ore smelting to extract the valuable substances from the ore as much as possible.

A large amount of high-temperature depleted slag is generated in the nonferrous metallurgy process, the temperature is 1300-1500 ℃, the depleted slag is generally in a high-temperature melting state, and subsequent treatment is carried out after cooling is needed, so that the pollution of the slag to the environment is reduced, and the environment protection is facilitated. At present, the dilution slag cooling generally adopts a water quenching slag process, namely normal-temperature water is directly adopted to impact liquid slag at a high speed, so that the slag is cooled and solidified, the process causes that the waste heat of the dilution slag can not be recovered, a large amount of water resources are consumed, the cooling process is easy to generate a blasting phenomenon, namely high-temperature high-pressure steam is generated, the material is splashed, and the equipment and personal safety are threatened.

Disclosure of Invention

Therefore, the embodiment of the invention provides a slag depletion treatment device which can recover waste heat, reduce water consumption and is safe and reliable.

The slag dilution treatment device comprises a treatment tank and a dispersion assembly, wherein the treatment tank comprises a tank body, a chamber is arranged in the tank body, a feed port, a discharge port, a gas inlet and a gas outlet are arranged on the tank body, the feed port, the discharge port, the gas inlet and the gas outlet are communicated with the chamber, cooling gas is suitable for entering the chamber through the gas inlet and flowing out of the chamber from the gas outlet, liquid slag is suitable for entering the chamber through the feed port and being discharged out of the chamber from the discharge port, and the dispersion assembly is used for dispersing the liquid slag entering the chamber through the feed port into slag particles.

According to the dilution slag treatment device provided by the embodiment of the invention, waste heat recovery can be carried out on high-temperature slag, energy waste is reduced, meanwhile, the use of water resources can be reduced, high-temperature high-pressure steam is avoided, and the cooling process is safer and more reliable.

In some embodiments, the dispersion assembly includes a dispersion cone rotatably disposed within the chamber below the feed port, the dispersion cone being adjacent the feed port in an up-down direction, the dispersion cone having a peripheral profile with a cross-sectional area that gradually increases in a top-down direction.

In some embodiments, the dispersion assembly further comprises a driver and a drive shaft, the driver is connected to the tank, at least a portion of the drive shaft is located inside the chamber, one end of the drive shaft is connected to the bottom of the dispersion cone, and the driver is connected to the other end of the drive shaft to drive the dispersion cone to rotate via the drive shaft.

In some embodiments, the material of the outer surface of the dispersion cone is a material that is resistant to high temperatures and does not adhere to the liquid slag.

In some embodiments, the tank is cylindrical, and the cross-sectional area of the tank gradually increases from top to bottom.

In some embodiments, the tank body comprises a side wall and a bottom wall, the bottom wall is arranged at the bottom of the side wall, the air inlet comprises a first air inlet and a second air inlet, the first air inlet is arranged on the side wall and is multiple, and the second air inlet is arranged on the bottom wall and is multiple.

In some embodiments, the tank body further comprises a top wall, the top wall is arranged at the top of the side wall, the feed inlet and the air outlet are both arranged on the top wall and are spaced apart from each other, the discharge port is arranged on the bottom wall, and the plurality of second air inlets are arranged around the discharge port.

In some embodiments, the slag depletion treatment apparatus further comprises a slag collection trough disposed below the tank and corresponding to the discharge port in the up-down direction.

In some embodiments, the slag-depleted processing apparatus further comprises a slag chute in communication with the feed opening for conveying slag into the feed opening.

In some embodiments, the slag chute is circular in cross-section with a peripheral profile, and is made of refractory material.

Drawings

FIG. 1 is a schematic view of a lean slag processing apparatus.

FIG. 2 is a schematic view of the configuration of a treatment tank in a lean slag treatment plant.

Reference numerals:

the device comprises a treatment tank 1, a tank body 11, a chamber 111, a side wall 112, a bottom wall 113, a top wall 114, a feeding hole 12, a discharging hole 13, a gas inlet 14, a first gas inlet 141, a second gas inlet 142, a gas outlet 15, a dispersing assembly 2, a dispersing cone 21, a transmission shaft 22, a driver 23, a solid slag collecting tank 3 and a slag chute 4.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

A depleted slag treatment apparatus according to an embodiment of the invention is described below with reference to the accompanying drawings.

As shown in fig. 1, a lean slag treatment apparatus according to an embodiment of the present invention includes a treatment tank 1 and a dispersion assembly 2.

The treatment tank 1 comprises a tank body 11, a chamber 111 is arranged in the tank body 11, the tank body 11 is provided with a feeding hole 12, a discharging hole 13, a gas inlet 14 and a gas outlet 15, the feeding hole 12, the discharging hole 13, the gas inlet 14 and the gas outlet 15 are all communicated with the chamber 111, cooling gas is suitable for entering the chamber 111 through the gas inlet 14 and flowing out of the chamber 111 from the gas outlet 15, liquid slag is suitable for entering the chamber 111 through the feeding hole 12 and discharging out of the chamber 111 from the discharging hole 13, and a dispersing assembly 2 is used for dispersing the liquid slag entering the chamber 111 through the feeding hole 12 into slag particles.

In other words, liquid slag enters the chamber 111 through the feeding hole 12 and is dispersed into slag particles by the dispersing assembly 2, the cooling gas is suitable for entering the chamber 111 through the gas inlet 14 to exchange heat with the slag particles, the cooling gas after exchanging heat with the slag particles flows out of the chamber 111 through the gas outlet 15 to be subjected to next waste heat recycling, the slag particles after heat exchange are discharged out of the chamber 111 through the discharge hole 13, the slag particles can be recycled, waste accumulation is reduced, and environment protection is facilitated.

According to the dilution slag treatment device provided by the embodiment of the invention, waste heat recovery can be carried out on high-temperature slag through the gas heat exchange of the slag and the cooling gas, so that the energy waste is reduced, meanwhile, the use of water resources can be reduced by using air to replace water for cooling, the generation of high-temperature and high-pressure steam is avoided, and the cooling process is safer and more reliable.

In some embodiments, the dispersion assembly 2 includes a dispersion cone 21, the dispersion cone 21 is rotatably disposed inside the chamber 111 below the feed port 12, the dispersion cone 21 is adjacent to the feed port 12 in the up-down direction, and the cross-sectional area of the outer peripheral profile of the dispersion cone 21 gradually increases in the up-down direction. As shown in fig. 1, the dispersion cone 21 disposed inside the chamber 111 is located right below the feed port 12 and is close to the feed port 12, and the liquid slag entering the chamber 111 through the feed port 12 is cooled in the chamber 111 after being dispersed by the dispersion cone 21, which has the effect of increasing the cooling speed.

In some embodiments, the dispersing assembly 2 further comprises a driver 23 and a drive shaft 22, the driver 23 is connected to the tank 11, at least a portion of the drive shaft 22 is located inside the chamber 111, one end of the drive shaft 22 is connected to the bottom of the dispersing cone 21, and the driver 23 is connected to the other end of the drive shaft 22 to drive the dispersing cone 21 to rotate via the drive shaft 22. As shown in fig. 1, the driver 23 is connected with the transmission shaft 22 and provides power, the transmission shaft 22 is connected with the dispersion cone 21, and the transmission shaft 22 drives the dispersion cone 21 to rotate at a high speed, so that the liquid slag entering the chamber 111 through the feed inlet 12 is uniformly dispersed into slag particles by the dispersion cone 21, the slag particles are easy to recycle, and the heat exchange speed is higher.

In some embodiments, the material of the tapered surface of the dispersion cone 21 is a material that is resistant to high temperatures and does not adhere to liquid slag. The conical surface of the dispersion cone 21 directly contacts the liquid slag, so that the conical surface of the dispersion cone 21 is made of high-temperature-resistant materials, otherwise, the equipment deformation caused by high temperature will affect the production process, and meanwhile, the conical surface of the dispersion cone 21 needs not to be adhered with the liquid slag, so that the liquid slag is uniformly dispersed, and the heat exchange effect is not affected.

In some embodiments, the tank 11 has a cylindrical shape, and the cross-sectional area of the tank 11 gradually increases from top to bottom. As shown in fig. 1, the tank 11 is cylindrical and has a cross-sectional area gradually increasing from top to bottom, which is advantageous for recovering the cooling gas and slag particles after heat exchange.

In some embodiments, the tank 11 includes a side wall 112 and a bottom wall 113, the bottom wall 113 is disposed at the bottom of the side wall 112, the air inlet 14 includes a first air inlet 141 and a second air inlet 142, the first air inlet 141 is disposed on the side wall 112 and is plural, and the second air inlet 142 is disposed on the bottom wall 113 and is plural. As shown in fig. 2, a plurality of first air inlets 141 are disposed on the side wall 112 of the tank 11, the first air inlets 141 are used for horizontally introducing cooling gas into the chamber 111, a plurality of second air inlets 142 are disposed on the bottom wall 113 of the tank 11, the second air inlets 142 are used for vertically and upwardly introducing cooling gas into the chamber 111, and cooling gas is introduced through the first air inlets 141 and the second air inlets 142, so that slag particles can rapidly exchange heat, the temperature can be reduced, and material splashing does not occur.

In some embodiments, the vessel 11 further includes a top wall 114, the top wall 114 is disposed on the top of the side wall 112, the inlet 12 and the outlet 15 are disposed on the top wall 114, the inlet 12 and the outlet 15 are spaced apart from each other, the outlet 13 is disposed on the bottom wall 113, the plurality of second inlets 142 are disposed around the outlet 13, as shown in fig. 2, the second inlets 142 introduce the cooling gas vertically upward into the chamber 111, and the plurality of second inlets 142 are disposed around the outlet 13 to prevent slag particles from accumulating in the corners of the vessel 11.

In some embodiments, the slag dilution treatment apparatus further includes a slag collection tank disposed below the tank 11 and corresponding to the discharge port 13 in the vertical direction, a solid slag collection tank 3 for collecting slag particles discharged from the discharge port 13, and the solid slag collection tank 3 disposed below the tank 11 and corresponding to the discharge port 13.

In some embodiments, the slag depletion treatment apparatus further comprises a slag chute 4, the slag chute 4 being in communication with the feed opening 12 and being adapted to deliver slag into the feed opening 12, the slag chute 4 being connected to a previous process step for delivering liquid slag through the feed opening 12 into the chamber 111 of the vessel 11 for treatment.

In some embodiments, the outer peripheral profile of the cross-sectional area of the slag chute 4 is circular, the slag chute 4 is made of refractory materials, and the slag chute 4 made of refractory materials can avoid the deformation of the slag chute 4 caused by high temperature, so that the smooth production process is ensured.

A lean slag handling apparatus according to some specific examples of the invention is described below with reference to fig. 1.

As shown in fig. 1, a slag depletion treatment apparatus according to an embodiment of the invention comprises a treatment tank 1, a dispersion assembly 2, a slag chute 4 and a solid slag collection trough 3.

The treatment tank 1 comprises a tank body 11, a cavity 111 is arranged in the tank body 11, the tank body 11 is provided with a feeding hole 12, a discharging hole 13, a gas inlet 14 and a gas outlet 15, the gas inlet 14 comprises a first gas inlet 141 and a second gas inlet 142, the first gas inlet 141 horizontally leads cooling gas into the cavity 111, the second gas inlet 142 vertically leads cooling gas upwards into the cavity 111, the feeding hole 12 is connected with a slag chute 4, and a solid-state slag collecting tank 3 is positioned below the discharging hole 13.

The dispersing assembly 2 comprises a dispersing cone 21, a driver 23 and a transmission shaft 22, as shown in fig. 1, the dispersing cone 21 is arranged inside the chamber 111 and is positioned below the feed inlet 12, the dispersing cone 21 is adjacent to the feed inlet 12 in the up-down direction, the driver 23 is connected with the tank body 11, the transmission shaft 22 is positioned inside the chamber 111, one end of the transmission shaft 22 is connected with the driver 23, and the other end of the transmission shaft 22 is connected with the cone bottom of the dispersing cone 21. Liquid slag is conveyed to the feeding hole 12 through the slag chute 4, is fed into the chamber 111 through the feeding hole 12 and is uniformly dispersed into slag particles by the dispersing cone 21, the slag particles and cooling gas are discharged out of the chamber 111 from the discharging hole 13 after heat exchange, and are collected by the solid slag collecting tank 3 for recycling again.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, 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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A slag depletion treatment apparatus, comprising:

the treatment tank comprises a tank body, a cavity is arranged in the tank body, the tank body is provided with a feeding hole, a discharging hole, an air inlet and an air outlet, the feeding hole, the discharging hole, the air inlet and the air outlet are communicated with the cavity, cooling gas is suitable for entering the cavity through the air inlet and flowing out of the cavity from the air outlet, and liquid slag is suitable for entering the cavity through the feeding hole and being discharged out of the cavity from the discharging hole;

a dispersion assembly for dispersing the liquid slag entering the chamber through the feed inlet into slag particles.

2. The depleted slag processing apparatus of claim 1, wherein the dispersion assembly includes a dispersion cone rotatably disposed within the chamber below the feed opening, the dispersion cone being adjacent the feed opening in an up-down direction, a cross-sectional area of a peripheral profile of the dispersion cone increasing in an up-down direction.

3. The slag depletion processing apparatus according to claim 2, wherein the dispersion assembly further comprises a drive and a drive shaft, the drive being connected to the tank, at least part of the drive shaft being located inside the chamber, one end of the drive shaft being connected to the bottom of the dispersion cone, the drive being connected to the other end of the drive shaft to drive the dispersion cone in rotation via the drive shaft.

4. The slag-depleted processing apparatus of claim 2, wherein the material of the outer surface of the dispersion cone is a material that is resistant to high temperatures and does not adhere to the liquid slag.

5. The depleted slag processing apparatus of claim 1 wherein the tank is cylindrical and the tank has a cross-sectional area that increases from top to bottom.

6. The slag depletion processing apparatus according to claim 1, wherein the tank includes a side wall and a bottom wall, the bottom wall being provided at a bottom of the side wall, the gas inlets including a first plurality of gas inlets provided at the side wall and a second plurality of gas inlets provided at the bottom wall.

7. The slag depletion processing apparatus according to claim 6, wherein the tank further comprises a top wall, the top wall being provided at a top of the side wall, the feed port and the gas outlet being provided in the top wall and being spaced apart from each other, the discharge port being provided in the bottom wall, and the plurality of second gas inlets being provided around the discharge port.

8. The slag depletion treatment apparatus according to any one of claims 1 to 7, further comprising a slag collection trough provided below the tank and corresponding to the discharge port in the up-down direction.

9. The lean slag handling apparatus of any one of claims 1 to 7 further comprising a slag chute in communication with the feed opening for conveying slag into the feed opening.

10. The slag-depletion processing apparatus according to claim 9, wherein the slag chute is circular in cross-section and is made of refractory material.