阅读说明：本技术 烧结混合料加热装置及方法 (Sintering mixture heating device and method ) 是由 陈小敏 高景栋 范振宇 陈慧艳 黄强 李文琦 王中奇 林长森 于 2020-12-16 设计创作，主要内容包括：本发明为一种烧结混合料加热装置及方法,该烧结混合料加热装置包括输送烧结混合料的传送带、对烧结混合料进行加热的热辐射组件和防止烧结混合料热量流失的外罩,外罩罩设于传送带的上方,外罩上分别开设有进料口和出料口,传送带的两端分别通过进料口和出料口伸出至外罩的外部,热辐射组件设置于外罩的内部。本发明解决了烧结混合料在输送过程中存在热量流失较大,导致烧结效果不佳的技术问题。(The invention relates to a sintering mixture heating device and a method, wherein the sintering mixture heating device comprises a conveyor belt for conveying a sintering mixture, a heat radiation component for heating the sintering mixture and an outer cover for preventing the heat loss of the sintering mixture, the outer cover is covered above the conveyor belt, the outer cover is respectively provided with a feed inlet and a discharge outlet, two ends of the conveyor belt respectively extend out of the outer cover through the feed inlet and the discharge outlet, and the heat radiation component is arranged inside the outer cover. The invention solves the technical problem of poor sintering effect caused by large heat loss in the conveying process of the sintering mixture.)

1. A sinter mix heating device, comprising a conveyor belt (5) for conveying sinter mix, a heat radiation unit (2) for heating the sinter mix, and a cover (1) for preventing the heat loss of the sinter mix, wherein:

the utility model discloses a heat radiation device, including conveyer belt (5), dustcoat (1), feed inlet (102) and discharge gate (103) have been seted up on dustcoat (1) respectively, the both ends of conveyer belt (5) are passed through respectively feed inlet (102) with discharge gate (103) stretch out to the outside of dustcoat (1), heat radiation component (2) set up in the inside of dustcoat (1).

2. The sinter mix heating device according to claim 1, wherein the casing (1) has a semi-cylindrical structure with two open ends, and the feed opening (102) and the discharge opening (103) are open ends of the casing (1), respectively, and are arranged along the extension direction of the conveyor belt (5).

3. The sinter mix heating device as claimed in claim 2, wherein the heat radiation unit (2) includes a plurality of infrared heaters, each of which is provided on an inner top wall of the housing (1), and the infrared heaters are spaced apart in an extending direction of the conveyor belt (5) with an infrared ray emitting end thereof facing a conveying surface of the conveyor belt (5).

4. The sinter mix heating device as claimed in claim 3, wherein an insulating layer (101) is provided on the outer wall of the housing (1).

5. A sinter mix heating device according to claim 3, characterised in that the inner wall of the housing (1) is provided with an infrared-reflecting and high-temperature-resistant coating.

6. A sinter mix heating device according to claim 3, further comprising a plurality of alarm devices (3) capable of detecting the temperature inside the housing (1) and sending alarm signals, wherein the alarm devices (3) are arranged inside the housing (1) at intervals along the extension direction of the conveyor belt (5).

7. A sinter mix heating device as claimed in claim 6, characterised in that the alarm (3) is a temperature alarm.

8. The heating device for sinter mixture according to claim 6, further comprising a controller (7) for receiving the detection signal of each alarm (3) and controlling each infrared heater, wherein the detection signal output end of each alarm (3) is electrically connected to the detection signal receiving end of the controller (7), and the control signal output end of the controller (7) is electrically connected to the control end of each infrared heater.

9. The sinter mix heating device according to claim 8, further comprising a temperature measuring component (4) for detecting the temperature of the sinter mix after heating, wherein the temperature measuring component (4) is disposed at the discharge port (103) of the outer cover (1), and a detection signal output end of the temperature measuring component (4) is electrically connected to a detection signal receiving end of the controller (7).

10. The sinter mix heating device as claimed in claim 9, wherein the temperature measuring component (4) is a temperature sensor.

11. The sinter mix heating device as claimed in claim 1, wherein a support (6) is provided at the bottom of the conveyor (5).

12. A sinter mix heating method is characterized in that the sinter mix is heated by radiant energy emitted by a heat radiation component (2) in the process of conveying the sinter mix, and heat and radiant energy loss are prevented by a cover (1) covering the sinter mix.

13. A method of heating a sinter mix as claimed in claim 12, wherein the local temperature of the sinter mix during transport is detected by a plurality of alarms (3), and the intensity of the heat radiating member (2) is controlled in accordance with the detection.

14. The sinter mix heating method as claimed in claim 13, wherein the alarm (3) alarms outward to control the heat radiating member (2) to stop operating after the alarm (3) detects that the local temperature of the sinter mix exceeds a preset temperature threshold.

15. The method of heating a sinter mix as claimed in claim 12, wherein the temperature of the sinter mix after heating is detected by a temperature measuring unit (4), and the intensity of the heat radiating unit (2) is controlled based on the detection result.

16. The sinter mix heating method as claimed in claim 12, wherein an insulating layer (101) for preventing loss of heat and radiant energy is provided on an outer wall of the housing (1).

17. The sinter mix heating method according to claim 12, wherein the sinter mix is conveyed by a conveyor belt (5).

Technical Field

The invention relates to a heating device, in particular to a sintering mixture heating device and a method.

Background

If the temperature of the sintering mixture reaches above the dew point (the sintering process is generally 60 ℃ to 65 ℃), the over-wet phenomenon caused by water vapor condensation in the material layer can be obviously reduced, the thickness of the over-wet layer and the resistance of the over-wet layer to airflow are effectively reduced, the air permeability of the material layer is improved, the yield and the quality of sintering ores are improved, and the energy consumption can be reduced. Wherein, the solid fuel consumption can be reduced by 0.145kg/t when the temperature of the sintering mixture is increased by 1 ℃. However, in the prior art, there is no equipment for heating the sintering mixture in the conveying process, so that the heat of the sintering mixture is continuously lost in the conveying process, and if the heat is seriously lost in the environment with lower temperature, the sintering effect is not good, the requirement of the sintering process cannot be met, the production efficiency is reduced, and the required production cost is increased.

Aiming at the problem that the sintering effect is poor due to large heat loss in the conveying process of the sintering mixture in the related technology, an effective solution is not provided at present.

Therefore, the inventor provides a sintering mixture heating device and a method by virtue of experience and practice of related industries for many years, so as to overcome the defects in the prior art.

Disclosure of Invention

The invention aims to provide a sintering mixture heating device and a method, wherein in the conveying process of the sintering mixture, the infrared heating technology is utilized to heat the sintering mixture, so that the temperature of the sintering mixture is increased, the air permeability of a material layer is improved, the production cost is reduced, and the production efficiency is improved.

The purpose of the invention can be realized by adopting the following technical scheme:

the invention provides a sinter mixture heating device which comprises a conveyor belt for conveying sinter mixture, a heat radiation component for heating the sinter mixture and an outer cover for preventing heat loss of the sinter mixture, wherein the conveyor belt comprises a conveying belt body and a heating device body, the heat radiation component comprises a heat radiation component, and the outer cover comprises a heat radiation component and a heat radiation component, wherein the heat radiation component is used for heating the sinter mixture, and the:

the dustcoat cover is located the top of conveyer belt, feed inlet and discharge gate have been seted up on the dustcoat respectively, the both ends of conveyer belt are passed through respectively the feed inlet with the discharge gate stretches out to the outside of dustcoat, the heat radiation subassembly set up in the inside of dustcoat.

In a preferred embodiment of the present invention, the housing is a semi-cylindrical structure that is disposed along an extending direction of the conveyor belt and has two open ends, and the feeding port and the discharging port are two open ends of the housing, respectively.

In a preferred embodiment of the present invention, the heat radiation assembly includes a plurality of infrared heaters, each of the infrared heaters is disposed on the top inner wall of the housing, the infrared heaters are spaced apart along the extending direction of the conveyor belt, and the infrared emission ends of the infrared heaters face the conveying surface of the conveyor belt.

In a preferred embodiment of the present invention, an insulating layer is disposed on an outer wall of the outer cover.

In a preferred embodiment of the present invention, a coating layer that reflects infrared rays and is resistant to high temperature is disposed on an inner wall of the housing.

In a preferred embodiment of the present invention, the sinter mix heating device further includes a plurality of alarm devices capable of detecting the temperature inside the housing and sending alarm signals, and each of the alarm devices is disposed inside the housing at intervals along the extending direction of the conveyor belt.

In a preferred embodiment of the invention, the alarm is a temperature alarm.

In a preferred embodiment of the present invention, the sinter mix heating device further includes a controller for receiving the detection signal of each alarm and controlling each infrared heater, the detection signal output end of each alarm is electrically connected to the detection signal receiving end of the controller, and the control signal output end of the controller is electrically connected to the control end of each infrared heater.

In a preferred embodiment of the present invention, the sintering mixture heating apparatus further includes a temperature measuring component for detecting a temperature of the heated sintering mixture, the temperature measuring component is disposed at the discharge port of the outer cover, and a detection signal output end of the temperature measuring component is electrically connected to a detection signal receiving end of the controller.

In a preferred embodiment of the present invention, the temperature measuring component is a temperature sensor.

In a preferred embodiment of the present invention, a support frame is disposed at the bottom of the conveyor belt.

The invention provides a sintering mixture heating method, which is characterized in that the sintering mixture is heated by radiation energy emitted by a heat radiation component in the process of conveying the sintering mixture, and the loss of heat and radiation energy is prevented by an outer cover arranged above the sintering mixture.

In a preferred embodiment of the present invention, the local temperature of the sinter mix during the conveying process is detected by a plurality of alarms, and the intensity of the heat radiation member is controlled according to the detection result.

In a preferred embodiment of the present invention, after the alarm detects that the local temperature of the sintering mixture exceeds the preset temperature threshold, the alarm gives an alarm to the outside to control the heat radiation component to stop working.

In a preferred embodiment of the present invention, the temperature of the sintered mixture after heating is detected by a temperature measuring component, and the intensity of the heat radiation component is controlled according to the detection result.

In a preferred embodiment of the present invention, the outer wall of the outer cover is provided with an insulating layer for preventing heat and radiation energy from being lost.

In a preferred embodiment of the invention, the sinter mix is conveyed by a conveyor belt.

From the above, the sintering mixture heating device and method of the present invention have the following characteristics and advantages: the cover is equipped with the dustcoat in the top cover of conveyer belt, and is provided with the heat radiation subassembly in the inside of dustcoat, and the sinter mixture heats the sinter mixture through the heat radiation subassembly in the transportation process on the conveyer belt, guarantees that the temperature of sinter mixture keeps above dew point temperature in transportation process, reduces the emergence of the too wet phenomenon of bed of material, and then improves the gas permeability of the bed of material, improves sintering effect and production efficiency.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention.

Wherein:

FIG. 1: is a structural schematic diagram of the sinter mixture heating device of the invention.

FIG. 2: is a cross-sectional view of the sinter mix heating apparatus of the invention.

FIG. 3: is a control structure block diagram of the sintering mixture heating device.

The reference numbers in the invention are:

1. a housing; 101. A heat-insulating layer;

102. a feed inlet; 103. A discharge port;

2. a heat radiation member; 3. An alarm;

4. a temperature measuring component; 5. A conveyor belt;

6. a support frame; 7. And a controller.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.

Implementation mode one

As shown in fig. 1 and 2, the present invention provides a sinter mix heating apparatus, which includes a conveyor belt 5, a heat radiation member 2, and a housing 1, wherein the conveyor belt 5 is used for conveying the sinter mix, the heat radiation member 2 is used for heating the sinter mix, and the housing 1 is used for preventing heat loss of the sinter mix. Wherein: the top of conveyer belt 5 is located to dustcoat 1 cover, feed inlet 102 and discharge gate 103 have been seted up on the dustcoat 1 respectively, the one end of conveyer belt 5 is passed through feed inlet 102 and is stretched out to dustcoat 1's outside, the other end of conveyer belt 5 stretches out to dustcoat 1's outside through discharge gate 103, in transportation process, the sinter mix enters into dustcoat 1 by feed inlet 102 along with conveyer belt 5 in, and export by discharge gate 103 along with conveyer belt 5, heat radiation component 2 sets up in dustcoat 1's inside.

According to the invention, the outer cover 1 covers the upper part of the conveyor belt 5, the heat radiation component 2 is arranged in the outer cover 1, the sintering mixture is heated by the heat radiation component 2 in the conveying process of the sintering mixture on the conveyor belt 5, and the outer cover 1 plays a role in heat preservation of the sintering mixture, so that the temperature of the sintering mixture is kept above the dew point temperature (60-65 ℃) in the conveying process, the phenomenon of over-wetting of a material layer is reduced, the air permeability of the material layer is further improved, and the sintering effect and the production efficiency are improved.

Specifically, as shown in fig. 1 and 2, the housing 1 is a semi-cylindrical structure that is disposed along the extending direction of the conveyor belt 5 and has two open ends, and the feed port 102 and the discharge port 103 are two open ends of the housing 1, respectively.

In an alternative embodiment of the present invention, the heat radiation assembly 2 comprises a plurality of infrared heaters, each of which is disposed on the top inner wall of the housing 1, and the infrared heaters are spaced along the extension direction of the conveyor belt 5, and the infrared emission ends of the infrared heaters are aligned with the conveying surface of the conveyor belt 5, so as to ensure that the infrared rays with certain wavelength emitted by the infrared heaters can be absorbed by the sinter mix. The infrared heating technology is a radiation heating technology, infrared rays can penetrate through the surface of the material to reach the interior of the material, the infrared heating rate is accelerated, and near infrared waves cannot heat air and media, so that the energy conversion efficiency is higher. Compared with the traditional heating method, the infrared heating method has the following advantages: firstly, infrared rays have strong penetrating power, and the materials can be heated inside and outside simultaneously; secondly, no heat transfer medium is needed for infrared heating, and the heat efficiency is high; thirdly, the infrared rays can be heated locally, so that energy can be saved; fourthly, the infrared heating temperature is easy to control and the temperature is rapidly increased; fifthly, infrared heating has no pollution and high safety. Therefore, the invention adopts a plurality of infrared heaters to heat the sintering mixture on the conveyor belt 5 so as to quickly increase the temperature of the sintering mixture and supplement the lost heat of the sintering mixture.

Specifically, the infrared heater is a tubular structure arranged along the horizontal direction, the power of the infrared heater is 3kW, and the wavelength range of the radiated infrared rays is 15 μm to 20 μm.

Further, the outer cover 1 may be made of, but not limited to, stainless steel, and it is necessary to ensure that the material of the outer cover 1 has certain strength and heat resistance, and has a strong reflection characteristic for the radiant energy, thereby reducing the loss of the radiant energy and improving the heating efficiency.

Specifically, the outer cover 1 has a wall thickness of 8mm, a length of 33m and a radius of 0.75 m. The specific shape and size of the housing 1 can of course be adapted to the requirements of the operation and the working environment at the site.

In an alternative embodiment of the present invention, as shown in fig. 1 and 2, an insulating layer 101 is uniformly laid on the outer wall of the outer cover 1, and the insulating layer 101 serves to insulate the sintering mixture.

Further, the insulating layer 101 can be made of, but not limited to, composite aluminum silicate insulating material, and the thickness of the insulating layer 101 is 100 mm.

In an optional embodiment of the present invention, the inner wall of the outer cover 1 is provided with a coating layer which reflects infrared rays and is high temperature resistant, so as to further improve the reflection capability of the outer cover 1 to radiant energy.

Further, the coating layer can be made of, but not limited to, a reflective heat insulation coating.

In an alternative embodiment of the present invention, as shown in fig. 1 and 2, the sinter mix heating device further includes a plurality of alarm devices 3 capable of detecting the temperature inside the housing 1 and sending alarm signals, wherein each alarm device 3 is arranged on the inner wall of the housing 1 at intervals along the extending direction of the conveyor belt 5, and the distance between two adjacent alarm devices 3 is 6 m. The temperature of different conveying sections in the outer cover 1 is detected in real time through the alarms 3, the temperature threshold value can be preset (the temperature threshold value can be set to be 75 ℃), when the local temperature of the sintering mixture is detected to exceed the temperature threshold value, the alarms 3 in the corresponding positions send out alarm signals outwards, all the infrared heaters stop working, and the situation that the local temperature is too high and fire disasters are caused is avoided.

Further, the alarm 3 may be, but is not limited to, a temperature alarm.

In an alternative embodiment of the present invention, as shown in fig. 1 to 3, the sinter mix heating apparatus further includes a controller 7, the controller 7 is disposed outside the outer cover 1, the detection signal output ends of the alarms 3 are electrically connected to the detection signal receiving ends of the controller 7, the control signal output ends of the controller 7 are electrically connected to the control ends of the infrared heaters, the controller 7 may be disposed in the sintering main control chamber, of course, the controller 7 may be disposed in the operation site, and the controller 7 is connected to the control device in the sintering main control chamber. The controller 7 is used for receiving detection signals of the alarms 3 and controlling the working state of the infrared heaters according to the detection signals, so that the heating temperature of the sintering mixture is remotely controlled.

In an alternative embodiment of the present invention, as shown in fig. 1 to 3, the sinter mix heating device further includes a temperature measuring component 4, the temperature measuring component 4 is disposed at the discharge port 103 of the housing 1, and a detection signal output end of the temperature measuring component 4 is electrically connected to a detection signal receiving end of the controller 7. The temperature of the heated sintering mixture is detected through the temperature measuring component 4, the detection data are sent to the controller 7, the controller automatically adjusts the intensity of infrared rays emitted by the infrared heaters according to the fed-back temperature data, the heating requirement on the sintering mixture is met, and the temperature of discharged materials is controlled within the range of 60-65 ℃.

Further, the temperature measuring component 4 may be, but is not limited to, a temperature sensor.

In an alternative embodiment of the present invention, as shown in fig. 1 and 2, a support frame 6 is provided at the bottom of the conveyor belt 5, and the support frame 6 improves the stability of the horizontal arrangement of the conveyor belt 5.

In an alternative embodiment of the present invention, a belt conveyor with a belt width of 1.2m may be used to convey the sinter mixture, wherein the belt surface part of the belt conveyor is the conveyor belt 5, and the middle frame part of the belt conveyor is the support frame 6. Of course, other conveying equipment can be adopted to ensure the stable conveying of the sintering mixture.

The sintering mixture heating device has the characteristics and advantages that:

one, this sinter mixture heating device heats the sinter mixture through heat radiation subassembly 2 to play heat retaining effect to the sinter mixture through dustcoat 1 and heat preservation 101, guarantee that the temperature of sinter mixture keeps above dew point temperature in the transportation process, reduce the emergence of the too wet phenomenon of bed of material, and then improve the gas permeability of the bed of material, improve sintering effect and production efficiency.

In the sintering mixture heating device, the outer cover 1 has certain strength and heat resistance, and can have strong reflection characteristics for radiation energy, and a coating layer which reflects infrared rays and is high-temperature resistant is arranged on the inner wall of the outer cover 1, so that strong reflection capability for radiation energy is ensured, and the effects of reducing radiation energy loss and improving heating efficiency are achieved.

In the sintered mixture heating device, a plurality of alarms 3 are arranged inside the outer cover 1, and the temperature measuring component 4 is arranged at the discharge hole 103 of the outer cover 1, so that the local temperature of the sintered mixture and the discharge temperature of the heated sintered mixture can be detected, and the heating temperature of the sintered mixture can meet the requirement.

Second embodiment

The invention provides a sintering mixture heating method, which heats a sintering mixture through radiation energy emitted by a heat radiation component 2 in the process of conveying the sintering mixture, and prevents heat and radiation energy from losing through an outer cover 1 covering the sintering mixture.

In the method, the local temperature of the sintering mixture in the conveying process is detected by a plurality of alarms 3, and the intensity of the heat radiation component 2 is controlled according to the detection result.

Further, after the alarm 3 detects that the local temperature of the sintering mixture exceeds a preset temperature threshold, the alarm 3 corresponding to the local position gives an alarm to the outside, and the controller 7 controls the heat radiation component 2 corresponding to the local position to stop working.

In the method, the temperature of the heated sintering mixture is detected by the temperature measuring component 4, and the intensity of the heat radiation component 2 is controlled according to the detection result.

In the method, the outer wall of the outer cover 1 is provided with an insulating layer 101 for preventing heat and radiation energy from losing.

In the method, the sinter mix is conveyed by a conveyor belt 5.

The following describes the specific process of the method:

the sinter mix enters the housing 1 through the inlet 102 of the housing 1 and is conveyed with the conveyor 5 in the housing 1 in the direction of the outlet 103. In the conveying process in the outer cover 1, the sintering mixture is heated through infrared rays emitted by the infrared heaters, the local temperature of the sintering mixture at the corresponding position is detected by the alarms 3 in the outer cover 1 respectively, and the detected temperature data is sent to the controller 7, so that the heating temperature of each local position of the sintering mixture can be known by a worker in real time. The sintering mixture after the heating is output from the discharge gate 103 of dustcoat 1, detects the temperature of the sintering mixture after the heating through temperature measurement subassembly 4 in discharge gate 103 department to the temperature data who will detect send to controller 7, so that the staff knows ejection of compact temperature in real time, controls ejection of compact temperature more than dew point temperature, thereby improves batch layer gas permeability, reduction in production cost, improvement production efficiency.

The method for heating the sintering mixture has the characteristics and advantages that:

according to the sintering mixture heating method, the sintering mixture is heated through the heat radiation assembly 2, the heat preservation effect is achieved on the sintering mixture through the outer cover 1 and the heat preservation layer 101, the temperature of the sintering mixture is kept above the dew point temperature in the conveying process, the phenomenon that the material layer is over-wet is reduced, the air permeability of the material layer is further improved, and the sintering effect and the production efficiency are improved.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention should fall within the protection scope of the invention.