Airtight device of sintered iron ore high-temperature load reduction, softening, melting and dripping tester
By designing an airtight device in the high-temperature load reduction soft melt droplet test, using positive pressure nitrogen gas, carbon monoxide environment and graphite high-temperature retaining ring, the problem of premature oxidation of graphite parts due to air contact is solved, extending the life of graphite parts and reducing the Consumption improves the realistic and economicality of the experiment.
Patent Information
- Application Number
- CN202323432800.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-16
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2033-12-16
AI Technical Summary
In the high-temperature load reduction soft melt drop test, the graphite piece was oxidized prematurely due to contact with air, resulting in excessive consumption, affecting the test cost and accuracy.
Design an airtight device for high-temperature load reduction soft melt droplet measuring instrument for burning iron ore. By forming a positive pressure nitrogen and carbon monoxide mixture environment in the corundum protective tube, the temperature zone is separated by a graphite high-temperature retaining ring to prevent air backflow and heat loss , extend the service life of graphite parts.
It effectively avoids air entering the protective tube graphite oxide parts, reduces graphite parts consumption, reduces electricity costs, and improves the realistic nature of the test.
Smart Images
Figure CN222337089U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an airtight device for a high-temperature load reduction soft melting dripping measuring instrument for burnt iron ore, belonging to the technical field of burnt iron ore measuring equipment in the metallurgical industry. Background Art
[0002] In the high temperature load reduction soft melting dripping test, the consumption of graphite parts accounts for about 70% to 75% of the test consumption cost. Therefore, the number of times the graphite parts are used directly affects the consumption of the high temperature load reduction soft melting dripping test. Under the condition of ensuring the smooth progress of the test, minimizing the consumption of graphite parts is one of the important measures to achieve test cost reduction.
[0003] High temperature load reduction soft melting dripping is a test to simulate the blast furnace reduction process, measure the high temperature properties of iron-containing raw materials such as initial softening, melting and dripping, and determine the progress and quantity of dripping and the melting temperature of slag iron, providing data support for blast furnace operation. According to the standard, the following requirements should be met: under positive pressure and high temperature conditions, the corundum protection tube and components provide an air-isolated atmosphere for the test, reducing the contact between the graphite components in the corundum protection tube and the air during the high temperature process. However, during the actual test, due to the poor air-isolated atmosphere on the upper part of the corundum protection tube, the consumption of graphite parts was too large.
[0004] Therefore, it is necessary to design an airtight device for a high-temperature load reduction soft melting dripping measuring instrument for burning iron ore to overcome the above-mentioned problem of poor atmosphere due to isolation of air. Utility Model Content
[0005] The utility model aims to provide an airtight device for a high-temperature load reduction soft melting drip tester for burning iron ore, which can prevent air from entering into the corundum protection tube to oxidize the graphite parts, prolong the service life of the graphite parts, and solve the problems existing in the background technology.
[0006] The technical solution of the utility model is:
[0007] The invention discloses an airtight device for a high-temperature load reduction soft-melting drip tester for burning iron ore, comprising a corundum protection tube, an air outlet pipe, a flange cover with a waist punching hole, a graphite pressure rod, a graphite high-temperature retaining ring, a graphite pressure head and a graphite crucible. The flange cover with a waist punching hole is covered on the corundum protection tube, and the flange cover with a waist punching hole is provided with an air outlet pipe. One end of the graphite pressure rod passes through the flange cover with a waist punching hole and extends into the corundum protection tube, and the end sleeve is provided with a graphite high-temperature retaining ring. The graphite pressure head and the graphite crucible are located in the corundum protection tube below the graphite high-temperature retaining ring.
[0008] The outer diameter of the graphite high temperature retaining ring matches the inner diameter of the corundum protection tube, and the inner diameter of the graphite high temperature retaining ring matches the diameter of the graphite pressure rod.
[0009] The graphite high temperature retaining ring divides the corundum protection tube into two zones, the upper zone being the low temperature zone and the lower zone being the high temperature zone.
[0010] The lower part of the flange cover with waist punching is conical and matched with the corundum protection tube, and the upper part is cylindrical.
[0011] A central hole matching the graphite pressure rod is arranged at the center of the flange cover with waist punching holes.
[0012] The utility model has the beneficial effect that the nitrogen and carbon monoxide mixed gas entering the corundum protection tube from the bottom graphite crucible forms a positive pressure environment in the corundum protection tube. Through the outlet pipe on the flange cover with waist punching, the backflow of air is avoided under positive pressure, thereby preventing air from entering the corundum protection tube to oxidize the graphite parts, reducing the consumption of graphite parts, and at the same time, through the high-temperature graphite retaining ring, the heat loss of the corundum protection tube can be reduced, the electricity cost is reduced, and the test simulation of the blast furnace is more realistic. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the utility model;
[0014] In the figure: corundum protection tube 1, air outlet pipe 2, flange cover with waist punching 3, graphite pressure rod 4, graphite high temperature retaining ring 5, graphite pressure head 6, graphite crucible 7. DETAILED DESCRIPTION
[0015] The present invention will be further described below by way of examples with reference to the accompanying drawings.
[0016] See attached Figure 1 A gas-tight device for a high-temperature load reduction soft-melting drip tester for burning iron ore comprises a corundum protection tube 1, an air outlet pipe 2, a flange cover with a waist punching hole 3, a graphite pressure rod 4, a graphite high-temperature retaining ring 5, a graphite pressure head 6 and a graphite crucible 7. The flange cover with a waist punching hole 3 is covered on the corundum protection tube 1, and the flange cover with a waist punching hole 3 is provided with an air outlet pipe 2. One end of the graphite pressure rod 4 passes through the flange cover with a waist punching hole 3 and extends into the corundum protection tube 1, and the end sleeve is provided with a graphite high-temperature retaining ring 5. The graphite pressure head 6 and the graphite crucible 7 are located in the corundum protection tube 1 below the graphite high-temperature retaining ring 5.
[0017] In this embodiment, refer to the attached Figure 1 The size of the corundum protection tube 1 is 110mm×100mm×100mm. The size of the high-temperature graphite retaining ring 5 is 98mm×20mm×10mm. The lower part of the waist punching flange cover 3 is a cone that matches the corundum protection tube 1, and the upper part is a cylinder.
[0018] The nitrogen and carbon monoxide mixed gas enters the corundum protection tube 1 from the bottom graphite crucible 7, so that a positive pressure environment is formed in the corundum protection tube 1.
[0019] The graphite high temperature retaining ring 5 divides the corundum protection tube 1 into two upper and lower zones, the upper zone being a low temperature zone and the lower zone being a high temperature zone. The graphite high temperature retaining ring 5 can reduce the heat loss of the corundum protection tube 1 .
[0020] Through the air outlet pipe 2 on the flange cover 3 with waist punching holes, the backflow of air is avoided under positive pressure, thereby preventing air from entering the corundum protection tube 1 to oxidize the graphite parts, thereby reducing the consumption of graphite parts.
Claims
1. An airtight device for a high temperature load reduction soft melting dripping tester for burning iron ore, characterized in that: The invention comprises a corundum protection tube (1), an air outlet pipe (2), a flange cover with a waist punching hole (3), a graphite pressure rod (4), a graphite high-temperature retaining ring (5), a graphite pressure head (6) and a graphite crucible (7). The flange cover with a waist punching hole (3) covers the corundum protection tube (1), and the flange cover with a waist punching hole (3) is provided with an air outlet pipe (2). One end of the graphite pressure rod (4) passes through the flange cover with a waist punching hole (3) and extends into the corundum protection tube (1). The end sleeve is provided with a graphite high-temperature retaining ring (5). The graphite pressure head (6) and the graphite crucible (7) are located in the corundum protection tube (1) below the graphite high-temperature retaining ring (5).
2. The airtight device of the iron ore high temperature load reduction soft melting drip tester according to claim 1 is characterized in that: The outer diameter of the graphite high-temperature retaining ring (5) matches the inner diameter of the corundum protection tube (1), and the inner diameter of the graphite high-temperature retaining ring (5) matches the diameter of the graphite pressure rod (4).
3. The airtight device of the iron ore high temperature load reduction soft melting drip tester according to claim 2 is characterized in that: The graphite high-temperature retaining ring (5) separates the corundum protection tube (1) into two upper and lower zones, the upper zone being a low-temperature zone and the lower zone being a high-temperature zone.
4. The airtight device of the iron ore high temperature load reduction soft melting drip tester according to claim 1 is characterized in that: The lower part of the waisted punched flange cover (3) is conical and matches the corundum protection tube (1), and the upper part is cylindrical.
5. The airtight device of the iron ore high temperature load reduction soft melting drip tester according to claim 4, characterized in that: The center of the waist-punched flange cover (3) is provided with a center hole matching the graphite pressure rod (4).