A device for detecting the burst temperature of limestone

Abstract

The utility model provides a device for detecting limestone burst temperature, including heating device, temperature measurement and control device, mechanical transmission and device frame, temperature measurement and control device includes temperature sensor and displacement sensor, mechanical transmission includes kiln top counter weight block, high temperature resistant corundum pressure stick, furnace bottom bearing chassis and double shaft lead screw, high temperature resistant corundum pressure stick bottom stretches into heating device inside, top passes through device frame top and mounting panel, is equipped with kiln top counter weight block, and the mounting panel top is equipped with displacement sensor, heating device fixed mounting is in device frame, is provided with temperature sensor inside, and the bottom opening is as the sample mouth, double shaft lead screw is used for driving furnace bottom bearing chassis to move up and down in device frame, furnace bottom bearing chassis is located heating device below, and there is furnace bottom low creep refractory lining brick on furnace bottom bearing chassis, is used for bearing limestone cylindrical sample, the utility model discloses can detect limestone burst temperature.

Description

Technical Field

[0001] This utility model relates to the technical field of limestone detection devices, and more particularly to a device for detecting the bursting temperature of limestone. Background Technology

[0002] Limestone, an important raw material resource in the metallurgical and building materials industries, is typically used in activated calcination processes to prepare high-performance active lime powder. This process involves the high-temperature pulverization and cracking of limestone, posing challenges to the design of limestone calcination kilns, equipment selection, and subsequent construction. With the increasing scarcity of high-quality limestone resources, the application of easily cracked and pulverized low-quality limestone ores is urgently needed. However, methods and devices for detecting limestone cracking temperatures are currently lacking, severely restricting the development and application of easily cracked and pulverized low-quality limestone ores.

[0003] In the production and application of low-quality limestone ore that is prone to explosive pulverization, it is necessary to fully consider the dual effects of temperature and pressure factors during the pulverization process. The pressure factor generated by the accumulation effect of limestone blocky materials in high-temperature kilns has a certain promoting effect on the pulverization of low-quality limestone. Therefore, there is an urgent need for a limestone explosive pulverization temperature detection device that can reflect the continuous pressure conditions. Utility Model Content

[0004] The above-mentioned lack of a device for detecting the bursting temperature of limestone has hindered the development and application of low-quality limestone mines that are prone to bursting and pulverization. Therefore, a device for detecting the bursting temperature of limestone is provided.

[0005] The technical means adopted in this utility model are as follows: A device for detecting the bursting temperature of limestone includes a heating device, a temperature measuring and control device, a mechanical transmission device, and a device frame. The temperature measurement and control device includes a temperature sensor and a displacement sensor; The mechanical transmission device includes a kiln top counterweight block, a high-temperature resistant alumina pressure bar, a furnace bottom load-bearing chassis, and a dual-axis lead screw; the bottom of the high-temperature resistant alumina pressure bar extends into the interior of the heating device; the top of the high-temperature resistant alumina pressure bar passes through the top of the device frame and the mounting plate located at the top of the device frame; the kiln top counterweight block is threaded onto the top of the high-temperature resistant alumina pressure bar; and the displacement sensor is mounted on the top of the mounting plate. The heating device is fixedly installed on both sides of the device frame, and the temperature sensor is installed inside the heating device; the bottom opening of the heating device serves as a sample loading port. The dual-axis lead screw includes two lead screws installed on both sides of the device frame. Movable blocks are fixedly installed on the two lead screws on both sides of the furnace bottom supporting chassis. The dual-axis lead screw is used to drive the furnace bottom supporting chassis to move up and down within the device frame. The furnace bottom supporting chassis is located below the heating device. A furnace bottom low-creep refractory lining brick is fixedly installed on the upper surface of the furnace bottom supporting chassis. The furnace bottom low-creep refractory lining brick is used to support a limestone cylindrical sample placed coaxially with the high-temperature corundum pressure bar. An explosion-proof silicon carbide sleeve for covering the limestone cylindrical sample is detachably installed on the furnace bottom low-creep refractory lining brick. The bottom of the high-temperature corundum pressure bar can extend into the explosion-proof silicon carbide sleeve and press on the limestone cylindrical sample.

[0006] Furthermore, the explosion-proof silicon carbide sleeve is provided with an explosion-proof silicon carbide hollow cover at the top, and the explosion-proof silicon carbide hollow cover has a central opening for the high-temperature resistant corundum pressure rod to pass through and press on the limestone cylindrical sample.

[0007] Furthermore, the heating device includes a housing, with both sides of the housing fixedly installed on the device frame; a heating element is installed inside the housing, and insulation cotton and refractory fiber lining bricks are sequentially installed on the inner surface of the housing, and a furnace top refractory fiber lining brick is installed on the top of the housing.

[0008] Furthermore, the temperature sensor is used to detect the temperature inside the heating device; the displacement sensor is located between the mounting plate and the kiln top counterweight block, and is used to detect the distance between the kiln top counterweight block and the mounting plate in real time.

[0009] Furthermore, the temperature measurement and control device also includes a temperature-displacement display, which is connected to the temperature sensor and the displacement sensor respectively, and is used to display the detection data of the temperature sensor and the displacement sensor.

[0010] Furthermore, the operation of the dual-axis lead screw is driven by a chassis lifting motor, and the operation of the chassis lifting motor is controlled by a chassis lifting controller.

[0011] Compared with the prior art, the present invention has the following advantages: The device for detecting the bursting temperature of limestone provided by this utility model adopts a bottom-loading design, ensuring that the cylindrical limestone sample, the high-temperature corundum pressure bar, and the kiln top counterweight block located on the high-temperature corundum pressure bar are on the same central axis. Simultaneously, the annularly arranged heating elements can uniformly heat the cylindrical limestone sample, the explosion-proof silicon carbide sleeve, and the explosion-proof silicon carbide hollow cover, improving the overall heating uniformity of the device and resulting in high accuracy in temperature and displacement detection. The design of the low-creep refractory lining bricks at the furnace bottom effectively prevents the influence of high-temperature deformation of the refractory material on the accuracy of displacement detection values. The design of the refractory fiber lining bricks, insulation cotton, and furnace top refractory fiber lining bricks effectively reduces the overall weight of the device and provides thermal insulation. The design of the chassis lifting controller, combined with the dual-axis lead screw and chassis lifting motor, effectively lifts the furnace bottom load-bearing chassis and the low-creep refractory lining bricks to the bottom of the heating device, ensuring that the high-temperature corundum pressure bar inside the heating device is on the same central axis as the limestone cylindrical sample. The design of using a temperature measurement and control device and a displacement sensor to control the displacement of the heating thermometer of the limestone cylindrical sample in the sample height direction can simulate the actual situation of limestone minerals in the production and calcination process to the greatest extent. It has strong reference value for lime kiln design and practical application, and is of great significance for the rational control of sintering temperature, material layer thickness and equipment selection. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the device for detecting the bursting temperature of limestone according to the present invention.

[0014] Figure 2 This is a schematic cross-sectional view of the device for detecting the bursting temperature of limestone according to the present invention.

[0015] Figure 3 This is a schematic diagram of the structure of the device for detecting the bursting temperature of limestone described in this utility model under operating conditions.

[0016] In the diagram: 1. Heating device; 2. Explosion-proof silicon carbide sleeve; 3. Explosion-proof silicon carbide hollow cover; 4. Heating element; 5. Refractory fiber lining brick; 6. Insulation cotton; 7. Refractory fiber lining brick for furnace top; 8. Low creep refractory lining brick for furnace bottom; 9. Temperature measurement and control device; 10. Temperature sensor; 11. Displacement sensor; 12. Temperature-displacement display; 13. Mechanical transmission device; 14. Kiln top counterweight block; 15. High-temperature resistant corundum pressure bar; 16. Furnace bottom load-bearing chassis; 17. Dual-axis lead screw; 18. Chassis lifting motor; 19. Chassis lifting controller; 20. Device frame. Detailed Implementation

[0017] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0021] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0022] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0023] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0024] Example 1 like Figure 1-3 As shown, this utility model provides a device for detecting the bursting temperature of limestone, including a heating device 1, a temperature measuring and control device 9, a mechanical transmission device 13, and a device frame 20. The temperature measurement and control device 9 includes a temperature sensor 11 and a displacement sensor 10; The mechanical transmission device 13 includes a kiln top counterweight block 14, a high-temperature resistant alumina pressure bar 15, a furnace bottom supporting chassis 16, and a dual-axis lead screw 17; the bottom of the high-temperature resistant alumina pressure bar 15 extends into the interior of the heating device 1; the top of the high-temperature resistant alumina pressure bar 15 passes through the top of the device frame 20 and the mounting plate located at the top of the device frame 20, and the kiln top counterweight block 14 is threaded onto the top of the high-temperature resistant alumina pressure bar 15; the displacement sensor 10 is mounted on the top of the mounting plate. The heating device 1 is fixedly installed on both sides of the device frame 20, and the temperature sensor 11 is provided inside the heating device 1; the bottom opening of the heating device 1 serves as a sample loading port. The dual-axis lead screw 17 includes two lead screws installed on both sides of the device frame 20. Movable blocks are fixedly installed on the two lead screws on both sides of the furnace bottom supporting base 16. The dual-axis lead screw 17 is used to drive the furnace bottom supporting base 16 to move up and down within the device frame 20. The furnace bottom supporting base 16 is located below the heating device 1. A furnace bottom low-creep refractory lining brick 8 is fixedly installed on the upper surface of the furnace bottom supporting base 16. The furnace bottom low-creep refractory lining brick 8 is used to support a limestone cylindrical sample placed coaxially with the high-temperature corundum pressure bar 15. An explosion-proof silicon carbide sleeve 2 for covering the limestone cylindrical sample is detachably installed on the furnace bottom low-creep refractory lining brick 8. The bottom of the high-temperature corundum pressure bar 15 can extend into the explosion-proof silicon carbide sleeve 2 and press on the limestone cylindrical sample.

[0025] Furthermore, the explosion-proof silicon carbide sleeve 2 is provided with an explosion-proof silicon carbide hollow cover 3 at the top, and the explosion-proof silicon carbide hollow cover 3 has a central opening for the high-temperature resistant corundum pressure rod 15 to pass through and press on the limestone cylindrical sample.

[0026] Furthermore, the heating device 1 includes a housing, with the two sides of the housing respectively fixedly installed on the device frame 20; a heating element 4 is installed inside the housing, and insulation cotton 6 and refractory fiber lining bricks 5 are sequentially installed on the inner surface of the housing, and a furnace top refractory fiber lining brick 7 is installed on the top of the housing.

[0027] Furthermore, the temperature sensor 11 is used to detect the temperature inside the heating device 1; the displacement sensor 10 is located between the mounting plate and the kiln top counterweight block 14, and is used to detect the distance between the kiln top counterweight block 14 and the mounting plate in real time; the height change of the limestone cylindrical sample during the heating process will cause the high-temperature resistant corundum pressure bar 15 to move upward, thereby changing the distance between the kiln top counterweight block 14 and the mounting plate. Therefore, by detecting the change in the distance between the kiln top counterweight block 14 and the mounting plate, the height change of the limestone cylindrical sample during the heating process can be reflected.

[0028] Furthermore, the temperature measurement and control device 9 also includes a temperature-displacement display 12, which is connected to the temperature sensor 11 and the displacement sensor 10 respectively, and is used to display the detection data of the temperature sensor 11 and the displacement sensor 10.

[0029] Furthermore, the operation of the lead screw is driven by the chassis lifting motor 18, and the operation of the chassis lifting motor 18 is controlled by the chassis lifting controller 19.

[0030] The working process of the device for detecting limestone bursting temperature described in this application is as follows: The device adopts a bottom-loading design. The limestone cylindrical sample is placed on the top of the low creep refractory lining brick 8 at the bottom of the furnace, and then the explosion-proof silicon carbide sleeve 2 and the explosion-proof silicon carbide hollow cover 3 are placed around and on top of the limestone cylindrical sample. Then, with the cooperation of the dual-axis lead screw 17 and the chassis lifting motor 18, the furnace bottom load-bearing chassis 16 and the furnace bottom low creep refractory lining brick 8 are lifted to the bottom of the heating device 1. The high-temperature corundum pressure bar 15 inside the heating device 1 is on the same central axis as the limestone cylindrical sample. The high-temperature corundum pressure bar 15 is directly pressed onto the upper part of the limestone cylindrical sample. The kiln top counterweight block 14 located on the high-temperature corundum pressure bar 15 is raised to a certain height, so that the top of the displacement sensor 10 contacts the bottom of the kiln top counterweight block 14, the displacement data is zeroed, and then the temperature measurement and control device 9 is turned on, and the heating device 1 is used to continuously heat the limestone cylindrical sample inside the device. Temperature sensor 11 is used to measure the temperature inside heating device 1. Temperature control device 9 is used to control the heating rate of limestone cylindrical sample. Displacement sensor 10 is used to measure the displacement change in the height direction of limestone cylindrical sample until the limestone bursts and pulverizes. The data of displacement sensor 10 drops instantaneously, the corresponding bursting temperature is recorded, and the detection task ends.

[0031] This invention employs a method for detecting bursting temperature under the dual effects of pressure and temperature, which can simulate the actual situation of limestone minerals during the production and calcination process to the greatest extent possible, and has strong reference value for actual production.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for detecting the bursting temperature of limestone, characterized in that, It includes a heating device, a temperature measuring and control device, a mechanical transmission device, and a device frame; The temperature measurement and control device includes a temperature sensor and a displacement sensor; The mechanical transmission device includes a kiln top counterweight block, a high-temperature resistant alumina pressure bar, a furnace bottom load-bearing chassis, and a dual-axis lead screw; the bottom of the high-temperature resistant alumina pressure bar extends into the interior of the heating device; the top of the high-temperature resistant alumina pressure bar passes through the top of the device frame and the mounting plate located at the top of the device frame; the kiln top counterweight block is threaded onto the top of the high-temperature resistant alumina pressure bar; and the displacement sensor is mounted on the top of the mounting plate. The heating device is fixedly installed on both sides of the device frame, and the temperature sensor is installed inside the heating device; the bottom opening of the heating device serves as a sample loading port. The dual-axis lead screw includes two lead screws installed on both sides of the device frame. Movable blocks are fixedly installed on the two lead screws on both sides of the furnace bottom supporting chassis. The dual-axis lead screw is used to drive the furnace bottom supporting chassis to move up and down within the device frame. The furnace bottom supporting chassis is located below the heating device. A furnace bottom low-creep refractory lining brick is fixedly installed on the upper surface of the furnace bottom supporting chassis. The furnace bottom low-creep refractory lining brick is used to support a limestone cylindrical sample placed coaxially with the high-temperature corundum pressure bar. An explosion-proof silicon carbide sleeve for covering the limestone cylindrical sample is detachably installed on the furnace bottom low-creep refractory lining brick. The bottom of the high-temperature corundum pressure bar can extend into the explosion-proof silicon carbide sleeve and press on the limestone cylindrical sample.

2. The apparatus for detecting the bursting temperature of limestone according to claim 1, characterized in that, The explosion-proof silicon carbide sleeve is provided with an explosion-proof silicon carbide hollow cover at the top. The explosion-proof silicon carbide hollow cover has a central opening for the high-temperature resistant corundum pressure rod to pass through and press on the limestone cylindrical sample.

3. The apparatus for detecting the bursting temperature of limestone according to claim 1, characterized in that, The heating device includes a housing, with the two sides of the housing fixedly installed on the device frame respectively; a heating element is installed inside the housing, and insulation cotton and refractory fiber lining bricks are sequentially installed on the inner surface of the housing, and a furnace top refractory fiber lining brick is installed on the top of the housing.

4. The apparatus for detecting the bursting temperature of limestone according to claim 1, characterized in that, The temperature sensor is used to detect the temperature inside the heating device; the displacement sensor is located between the mounting plate and the kiln top counterweight block, and is used to detect the distance between the kiln top counterweight block and the mounting plate in real time.

5. The apparatus for detecting the bursting temperature of limestone according to claim 1, characterized in that, The temperature measurement and control device further includes a temperature-displacement display, which is connected to the temperature sensor and the displacement sensor respectively, and is used to display the detection data of the temperature sensor and the displacement sensor.

6. The apparatus for detecting the bursting temperature of limestone according to claim 1, characterized in that, The lead screw is driven by a chassis lifting motor.

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