Structure for improving uniformity of basalt melt

Abstract

The utility model relates to the technical field of basalt fiber production, and provides a structure for improving the uniformity of a basalt melt, which comprises a molten pool for melting the basalt melt, the molten pool comprises a front heating area and a modulation area, the depth of the front heating area is not less than three times that of the modulation area, and the width of the front heating area is not less than three times that of the modulation area. The molten pool is electrified and heated by a heating electrode in the front heating area, a heating assembly is fixed above the modulation area, and the molten pool is coated with a heat preservation layer. The bottom of the molten pool is of an arc-shaped structure. The utility model has the beneficial effects that a thermal field in a molten pool can be more uniform, the melting rate of basalt stones is improved, and the temperature and components of basalt melt are more uniform, so that the productivity and quality of basalt continuous fibers produced by a single wire drawing bushing plate are improved, and the realization of large-scale industrial production of the basalt continuous fibers is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of basalt fiber production, and specifically relates to a structure for improving the uniformity of basalt melt. Background Art

[0002] Basalt, andesitic basalt, basalt, diabase, gabbro, coarse-grained basalt, amphibolite, and andesite porphyry are all volcanic magmatic rocks with very high chemical and thermal stability.

[0003] Fibers made from basalt ore, namely basalt fibers, have excellent properties such as high strength, high chemical stability, high thermal stability and good electrical insulation. Therefore, basalt fibers have broad application prospects and can be used in different industrial fields.

[0004] There are a large number of basalt deposits in China, so the ore raw material resources for basalt fiber production are extremely rich. However, due to the limitation of complex production technology and other factors, the wide application of basalt fiber is subject to certain restrictions, so there is an urgent need to develop and improve the process technology and equipment for basalt fiber production. The ore melting process and the melt quality homogenization process are key processes for basalt fiber production. The above process level directly determines the quality of the melt and thus affects the quality of basalt fiber. Therefore, how to make the temperature and composition of the basalt melt more uniform and improve the production capacity and quality of basalt continuous fibers produced by a single drawing plate are technical problems that technicians in this field urgently need to solve. Utility Model Content

[0005] The utility model proposes a structure for improving the uniformity of basalt melt, which can make the thermal field in the molten pool more uniform, increase the melting rate of basalt stone materials, and make the temperature and composition of the basalt melt more uniform, thereby improving the production capacity and quality of basalt continuous fibers produced by a single wire drawing plate, and is more conducive to the large-scale industrial production of basalt continuous fibers.

[0006] To this end, the technical solutions adopted are as follows:

[0007] A structure for improving the uniformity of basalt melt comprises a molten pool for melting the basalt melt, the molten pool comprises a preheating zone and a modulation zone, the depth of the preheating zone is not less than three times the depth of the modulation zone, the molten pool is heated by energizing a heating electrode in the preheating zone, a heating component is fixed above the modulation zone, and the outside of the molten pool is coated with a thermal insulation layer.

[0008] A further technical solution is that the depth of the basalt melt inside the modulation zone is not higher than 65 mm.

[0009] A further technical solution is that the bottom of the molten pool is an arc-shaped structure.

[0010] A further technical solution is that a heating space is provided between the molten pool and the heat-insulating layer, and the interior of the heating space is heated by gas.

[0011] A further technical solution is that the thermal insulation layer is fire-resistant fiber.

[0012] A further technical solution is that refractory bricks are laid on the bottom of the molten pool, and a sealing material layer, a bottom brick layer and a thermal insulation brick layer are laid in sequence below the refractory bricks.

[0013] A further technical solution is that the heating electrode is a molybdenum electrode immersed in the glass liquid.

[0014] A further technical solution is that the heating component is a spiral electric heating wire.

[0015] A further technical solution is that a sillimanite brick layer is laid between the insulation layer and the basalt melt inside the molten pool, and the outside of the heating component is covered with a sheath plate, and the sheath plate is embedded in the sillimanite brick layer.

[0016] The working principle and beneficial effects of this application are:

[0017] 1. The modulation zone is specially set up according to the low thermal permeability of basalt melt, which reduces the depth of basalt melt in this area and improves the heating efficiency.

[0018] 2. The depth of the pre-heating zone is relatively deep. The heating electrode conducts electrical heating to the basalt melt inside. As the main heating method, it can heat the basalt melt to a certain temperature, thereby reducing the heating pressure in the modulation zone, and cooperate with the modulation zone to exert the greatest effect, modulating a basalt melt with higher consistency in composition and temperature.

[0019] 3. Chamfer the bottom of the molten pool to form an arc-shaped structure, which reduces the heat dissipation and viscous resistance at the edge of the molten pool and prevents the melt from being retained to form deteriorated fluid defects.

[0020] 4. A heating component close to the surface of the basalt melt is used, which can cover the basalt melt with high radiation and perform zone heating, thereby reducing the uneven heating caused by heat dissipation. At the same time, it can also effectively heat the edge of the molten pool, further reducing the occurrence of uneven heating.

[0021] 5. The heating electrode is immersed in the basalt melt, which belongs to internal heating, and the heating component above the modulation zone belongs to external radiation heating. The combination of the two forms internal and external heating, which makes the thermal field in the molten pool more uniform, improves the melting rate of the basalt melt, and makes the temperature and composition of the basalt melt more uniform, further improves the production capacity and quality of the basalt continuous fiber produced by a single wire drawing plate, and is more conducive to the large-scale industrial production of basalt continuous fibers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] Figure 1 This is a schematic diagram of the overall cross-sectional structure of this application;

[0024] Figure 2 It is a side cross-sectional structural schematic diagram of the present application;

[0025] Figure 3 This is a schematic diagram of the structure of the molten pool described in this application;

[0026] Figure 4 This is a schematic diagram of the structure of the heating assembly described in this application;

[0027] Figure 5 for Figure 1 Schematic diagram of the enlarged structure of part A in the middle.

[0028] In the figure: 100, basalt melt; 1, molten pool; 10, arc-shaped structure; 11, pre-heating zone; 12, modulation zone; 13, heating electrode; 14, heating assembly; 141, electric heating wire; 142, sheath plate; 2, insulation layer; 3, heating space; 4, refractory bricks; 5, sealing material layer; 6, bottom brick layer; 7, insulation brick layer; 8, sillimanite brick layer. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1-Figure 5As shown, a structure for improving the uniformity of basalt melt includes a molten pool 1 for melting basalt melt 100, wherein the molten pool 1 includes a preheating zone 11 and a modulation zone 12, wherein the depth of the preheating zone 11 is not less than three times the depth of the modulation zone 12, wherein the molten pool 1 is electrically heated by a heating electrode 13 in the preheating zone 11, a heating component 14 is fixed above the modulation zone 12, and the outside of the molten pool 1 is coated with a thermal insulation layer 2.

[0031] Among them, the modulation zone 12 is specifically set according to the low thermal permeability characteristics of the basalt melt 100, which reduces the depth of the basalt melt 100 in this area. During use, a melt depth of 50-60 mm is preferably selected, which is about a quarter of the melt depth of the pre-heating zone 11, thereby improving the heating efficiency.

[0032] The depth of the preheating zone 11 is relatively deep, and the heating electrode 13 electrically heats the basalt melt 100 inside. As the main heating method, the basalt melt 100 can be heated to a certain temperature, thereby reducing the heating pressure of the modulation zone 12, and cooperates with the modulation zone 12 to play the greatest role and effect, and modulate the basalt melt 100 with higher consistency of composition and temperature. The heating electrode 13 is a molybdenum electrode immersed in the glass liquid.

[0033] In addition, there is a heating space 3 between the molten pool 1 and the insulation layer 2, and the interior of the heating space 3 is heated by gas. It can also be heated by carbon rods and other technologies, the purpose of which is to maintain the uniformity and stability of the entire heating area of ​​the basalt melt 100, assist the heating electrode 13 and the heating assembly 14, and effectively prevent uneven heating caused by heat dissipation.

[0034] like Figure 3 As shown, the bottom of the molten pool 1 is chamfered to form an arc-shaped structure 10, which reduces heat dissipation and viscous resistance at the edge of the molten pool 1 and prevents the melt from being retained to form a deteriorated fluid defect.

[0035] like Figure 2 As shown, the insulation layer 2 is refractory fiber. Refractory bricks 4 are laid at the bottom of the molten pool 1, and a sealing material layer 5, a bottom brick layer 6 and an insulation brick layer 7 are laid in sequence below the refractory bricks 4. Among them, the sealing material layer 5 is preferably a special sealing material, AZS ramming material, or zircon ramming material.

[0036] like Figure 4-Figure 5As shown, a sillimanite brick layer 8 is also laid between the insulation layer 2 and the basalt melt 100 inside the molten pool 1, and the heating component 14 is coated with a sheath plate 142 on the outside, and the sheath plate 142 is embedded in the sillimanite brick layer 8. The material of the sheath plate 142 is preferably silicon nitride combined with silicon carbide or silicon carbide. The heating component 14 is a spiral electric heating wire 141, and the material is preferably iron-chromium-aluminum or nickel-chromium alloy. Thus, a heating component 14 that is close to the liquid surface of the basalt melt 100 is used, which can cover the basalt melt 100 with high radiation and perform zone heating, thereby reducing the uneven heating phenomenon caused by heat dissipation, and at the same time, it can also effectively heat the edge of the molten pool 1, further reducing the occurrence of uneven heating.

[0037] The heating electrode 13 of the application is immersed in the basalt melt, which belongs to internal heating, and the heating component 14 above the modulation zone 12 belongs to external radiation heating. The combination of the two forms internal and external heating, thereby making the thermal field in the molten pool 1 more uniform, improving the melting rate of the basalt melt 100, and making the temperature and composition of the basalt melt more uniform, further improving the production capacity and quality of the basalt continuous fiber produced by a single drawing plate, and is more conducive to the large-scale industrial production of basalt continuous fibers.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A structure for improving the homogeneity of basalt melt, comprising a molten pool (1) for melting basalt melt (100), characterized in that: The molten pool (1) comprises a preheating zone (11) and a modulation zone (12); the depth of the preheating zone (11) is not less than three times the depth of the modulation zone (12); the molten pool (1) is electrically heated by a heating electrode (13) in the preheating zone (11); a heating component (14) is fixed above the modulation zone (12); and the outside of the molten pool (1) is coated with a thermal insulation layer (2).

2. A structure for improving the uniformity of basalt melt according to claim 1, characterized in that: The depth of the basalt melt (100) inside the modulation zone (12) is not more than 65 mm.

3. The structure for improving the uniformity of basalt melt according to claim 1, characterized in that: The bottom of the molten pool (1) is an arc-shaped structure (10).

4. The structure for improving the uniformity of basalt melt according to claim 1, characterized in that: A heating space (3) is provided between the molten pool (1) and the heat-insulating layer (2), and the interior of the heating space (3) is heated by gas.

5. The structure for improving the uniformity of basalt melt according to claim 1, characterized in that: The thermal insulation layer (2) is fire-resistant fiber.

6. The structure for improving the uniformity of basalt melt according to claim 1, characterized in that: Refractory bricks (4) are laid at the bottom of the molten pool (1), and a sealing material layer (5), a bottom brick layer (6) and a thermal insulation brick layer (7) are laid in sequence below the refractory bricks (4).

7. The structure for improving the uniformity of basalt melt according to claim 1, characterized in that: The heating electrode (13) is a molybdenum electrode immersed in the glass liquid.

8. The structure for improving the uniformity of basalt melt according to claim 1, characterized in that: The heating component (14) is a spiral electric heating wire (141).

9. The structure for improving the uniformity of basalt melt according to claim 1, characterized in that: A sillimanite brick layer (8) is also laid between the thermal insulation layer (2) and the basalt melt (100) inside the molten pool (1), and the heating component (14) is externally coated with a sheath plate (142), wherein the sheath plate (142) is embedded in the sillimanite brick layer (8).

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