Basalt melting tank furnace
By designing a water droplet-shaped basalt melting pool kiln, combined with continuous feeding and air extraction devices, the problem of waste gas re-melting into basalt melt is solved, effective isolation and purification of waste gas is achieved, and the operation efficiency of the melting pool is improved.
Patent Information
- Application Number
- CN202411583787.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-02-11
AI Technical Summary
During the exhaust process of the existing basalt melting pool, some of the exhaust gas will be re-melted into the basalt melt, resulting in some components exceeding the standard and need to be processed through oxygen blowing operations.
A basalt melting pool kiln was designed. The melting pool of the body of the pool kiln was water droplets, the diameter of the upper half gradually became larger, and the lower half was semicircular or oval. A continuous feeding device and a pumping device are provided, and the rotating air flow is blown into the air inlet to squeeze the exhaust gas to the feeding port, and the exhaust gas on the top is extracted by the pumping device to isolate the exhaust gas from the liquid level.
It effectively avoids the waste gas re-melting into the basalt melt, prevents the components from exceeding the standard, realizes timely isolation and purification of the waste gas, and improves the operating efficiency of the melting pool.
Smart Images
Figure CN119409411A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a melting furnace, in particular to a basalt melting tank furnace. Background Art
[0002] Basalt fiber is a continuous fiber drawn from natural basalt. It is an inorganic environmentally friendly green high-performance fiber material composed of oxides such as silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, iron oxide and titanium dioxide. Basalt fiber is made by melting natural basalt at a high temperature of 1450℃~1500℃ in a basalt melting tank kiln, and then drawing it at high speed through a platinum-rhodium alloy drawing plate.
[0003] It can be seen that the basalt tank kiln is an important equipment for producing basalt fiber. The basalt tank kiln is usually composed of a furnace body, a melting tank, a homogenizing tank, a material channel, a feeding port, a burner (or an electric heating rod), a smoke exhaust duct, a feeding port, a discharge device, etc. Among them, the melting tank is used to melt the basalt raw materials at high temperature.
[0004] Existing melting pools are all in the shape of a rectangle or a cylinder, and ventilation holes are opened above the melting pool to discharge the waste gas generated in the melting pool through the ventilation holes. However, this passive exhaust method will still cause some waste gas to remain on the top of the melting pool, and some waste gas will still be pressed into the basalt melt, causing some components of the basalt melt to exceed the standard, thereby performing oxygen blowing operations. Summary of the invention
[0005] The main purpose of the present invention is to provide a basalt melting tank kiln, which can not only realize continuous supply of heated materials, but also isolate the exhaust gas in the melting tank kiln from the molten liquid surface of the basalt to prevent the exhaust gas from re-melting into the basalt molten liquid.
[0006] In order to achieve the above-mentioned purpose, the present invention provides a basalt melting tank kiln, comprising a tank kiln body, the melting pool of the tank kiln body is in the shape of a water drop, the diameter of the melting pool in the upper part gradually increases from top to bottom, and the melting pool in the lower part is in the shape of a semicircle or an ellipse, and a continuous feeding device is provided on one side of the feed inlet of the tank kiln body, and the continuous feeding device can continuously convey the heated basalt crushed materials into the melting pool; An exhaust device is provided at the feed port of the pool kiln body, which can exhaust the waste gas in the upper half of the melting pool. An air inlet is provided at the junction of the upper half and the lower half. The gas blown out of the air inlet is blown into the melting pool from the tangent direction of the upper half. The gas blown into the melting pool by the air inlet can squeeze the waste gas at the edge of the upper half into the feed port, so that it can be exhausted by the exhaust device.
[0007] Preferably, the continuous feeding device includes a barrel, a feed channel and a flame spray gun, the bottom of the barrel is fixedly connected to the feed channel, the feed channel is inclined, the outlet of the feed channel is located above the feed port, and the flame spray gun is arranged on the top of the feed channel.
[0008] Further preferably, a plurality of inclined partitions are provided on the top of the feed channel, and the partitions divide the feed channel into a plurality of isolation spaces, and a flame spray gun is provided in each isolation space.
[0009] More preferably, the vertical distance between the bottom of the partition and the lower bottom plate of the feed channel is greater than one times the diameter of the material and less than two times the diameter of the material.
[0010] More preferably, a cover plate is provided above the feed port, a conical cone is provided in the middle of the cover plate, the major diameter of the cone is located at the bottom, the minor diameter of the cone is open, and the material passes through the cone into the melting pool.
[0011] More preferably, the lower end surface of the cone is higher than the lower end surface of the air inlet. More preferably, a top plate is provided above the small diameter of the cone, an exhaust pipe is passed through the middle of the top plate, and the exhaust pipe is fixedly connected to the exhaust fan.
[0012] More preferably, a plurality of through holes are provided at a position of the small diameter end of the cone cylinder near the cover plate, and the exhaust gas is squeezed into the cone cylinder through the through holes.
[0013] The beneficial effects of the present invention are: The present invention heats the material by arranging a continuous feeding device on one side of the melting pool kiln and adding a flame injector to the continuous feeding device to avoid the influence of the cold material on the molten liquid. In addition, the present invention designs the melting pool into a water drop shape, so that the upper half of the melting pool forms a cone cavity, and opens an air inlet at the maximum diameter, and uses the blown rotating airflow to squeeze the exhaust gas near the side wall to the top of the melting pool, and then uses the exhaust device to extract the exhaust gas at the top, so as to avoid the generated exhaust gas from staying excessively on the surface of the molten liquid and then re-melting into the molten liquid, and isolate the exhaust gas in time. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0015] Figure 1 It is a structural schematic diagram of the melting tank furnace of the present invention (I); Figure 2 2 is a schematic structural diagram of the melting tank kiln of the present invention.
[0016] Description of Reference Numerals 10. Melting pool; 100. continuous feeding device; 110. partition; 120. flame spray gun; 200, cover plate; 300, cone; 310, through hole; 400, air inlet duct; 510, exhaust duct; 520, top plate. DETAILED DESCRIPTION
[0017] The technical scheme in the embodiment of the present invention is described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.
[0018] like Figure 1 As shown, this embodiment provides a basalt melting tank kiln, including a tank kiln body. The basalt tank kiln includes a furnace body, a melting tank, a homogenizing tank, a material channel, a feeding port, an electric heating rod, a smoke exhaust duct, a feeding port, a discharge device and other equipment. This embodiment only shows the melting pool part, and other parts are not specifically shown in the drawings.
[0019] Specifically, in this embodiment, Figure 1 and Figure 2 As shown, the melting pool of the pool kiln body is in the shape of a water drop, which is convenient for the exhaust gas generated during the melting of basalt to float up. Therefore, the diameter of the upper part of the melting pool gradually increases from top to bottom, and the diameter of the lower part of the melting pool gradually decreases, so that the lower part of the melting pool is semicircular or elliptical.
[0020] An air inlet is provided at the diameter change point of the melting pool (i.e., the junction of the upper and lower parts), and the air inlet is connected to the air inlet duct. The gas blown out of the air inlet is blown into the melting pool from the tangent direction of the upper part. The gas blown into the melting pool by the air inlet squeezes the waste gas at the edge of the upper part to the feed port, thereby isolating the waste gas from the liquid surface. In addition, the speed of the blown gas can be adjusted according to the actual situation, and the blown gas can also form a redox reaction with harmful elements in the molten liquid, thereby purifying the molten liquid. An exhaust device is provided at the feed port of the melting pool, and the exhaust gas at the top is sucked away by the exhaust device, and the sucked away waste gas is discharged into the atmosphere after being treated to meet the emission standards.
[0021] In this embodiment, a cover plate is provided above the feed port, and a conical cone is provided in the middle of the cover plate. The large diameter of the cone is located at the bottom, and the small diameter of the cone is open. At the same time, the lower end surface of the cone is higher than the lower end surface of the air inlet, so as to prevent the waste gas between the cone and the side wall of the melting pool from being blown away by the gas blown in from the air inlet. A top plate is provided above the small diameter of the cone, and an exhaust pipe is passed through the middle of the top plate, and the exhaust pipe is fixedly connected to the exhaust fan. A plurality of through holes are provided at the small diameter end of the cone near the cover plate, and the waste gas is squeezed into the cone through the through holes by the extrusion of the blown gas, and then is extracted by the exhaust pipe. The exhaust pipe is arranged in the cone, so that the exhaust pipe can also extract the waste gas in the cone, so as to quickly remove the waste gas in the upper part.
[0022] The material passes through the cone and enters the melting pool.
[0023] In this embodiment, a continuous feeding device is further provided on one side of the feed port of the tank kiln body, and the continuous feeding device can continuously convey the heated basalt crushed materials into the melting pool, thereby avoiding lowering the temperature in the melting pool.
[0024] Specifically, in this embodiment, Figure 1 and Figure 2 As shown, the continuous feeding device includes a barrel, a feed channel and a flame spray gun, the bottom of the barrel is fixedly connected to the feed channel, the feed channel is inclined, the outlet of the feed channel is located above the feed port, and the flame spray gun is arranged at the top of the feed channel. Preferably, a plurality of inclined partitions are provided on the top of the feed channel, and the partitions divide the feed channel into a plurality of isolation spaces, and a flame spray gun is arranged in each isolation space. The partition can arrange the materials in a single layer, so that the vertical distance between the bottom of the partition and the lower bottom plate of the feed channel is greater than one times the diameter of the material and less than two times the diameter of the material. In this way, it is convenient to heat the material evenly. In addition, in this embodiment, the bottom of the partition can be set to a rake shape to facilitate the turning of the material.
[0025] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
Claims
1. A basalt melting tank kiln, comprising a tank kiln body, characterized in that: The melting pool of the tank kiln body is in the shape of a water drop, the diameter of the melting pool in the upper part gradually increases from top to bottom, and the melting pool in the lower part is in the shape of a semicircle or an ellipse. A continuous feeding device is provided on one side of the feed inlet of the tank kiln body, and the continuous feeding device can continuously convey the heated basalt crushed materials into the melting pool; An exhaust device is provided at the feed port of the pool kiln body, and the exhaust device can exhaust the waste gas in the upper half of the melting pool. An air inlet is provided at the junction of the upper half and the lower half, and the gas blown out of the air inlet is blown into the melting pool from the tangent direction of the upper half. The gas blown into the melting pool by the air inlet can squeeze the waste gas at the edge of the upper half into the feed port, so that it can be exhausted by the exhaust device.
2. A basalt melting tank kiln according to claim 1, characterized in that: The continuous feeding device includes a barrel, a feed channel and a flame spray gun. The bottom of the barrel is fixedly connected to the feed channel. The feed channel is inclined. The outlet of the feed channel is located above the feed port. The flame spray gun is arranged at the top of the feed channel.
3. A basalt melting tank kiln according to claim 2, characterized in that: A plurality of inclined partitions are arranged on the top of the feed channel, and the partitions divide the feed channel into a plurality of isolation spaces, and the flame spray gun is arranged in each of the isolation spaces.
4. A basalt melting tank kiln according to claim 3, characterized in that: The vertical distance between the bottom of the partition and the lower bottom plate of the feed channel is greater than one time of the material diameter and less than two times of the material diameter.
5. A basalt melting tank kiln according to claim 4, characterized in that: A cover plate is provided above the feed port, a conical cone is provided in the middle of the cover plate, the major diameter of the cone is located at the bottom, the minor diameter of the cone is open, and the material passes through the cone into the melting pool.
6. A basalt melting tank kiln according to claim 5, characterized in that: The lower end surface of the cone is higher than the lower end surface of the air inlet.
7. A basalt melting tank kiln according to claim 6, characterized in that: A top plate is provided above the small diameter of the cone, an exhaust pipe is passed through the middle of the top plate, and the exhaust pipe is fixedly connected to the exhaust fan.
8. A basalt melting tank kiln according to claim 7, characterized in that: A plurality of through holes are arranged at a position of the small diameter end of the cone cylinder close to the cover plate, and the exhaust gas is squeezed into the cone cylinder through the through holes.