CN219506957U - Material proportioning and conveying device for electric smelting magnesia-alumina spinel - Google Patents
Material proportioning and conveying device for electric smelting magnesia-alumina spinel Download PDFInfo
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- CN219506957U CN219506957U CN202320635907.XU CN202320635907U CN219506957U CN 219506957 U CN219506957 U CN 219506957U CN 202320635907 U CN202320635907 U CN 202320635907U CN 219506957 U CN219506957 U CN 219506957U
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Abstract
An electric smelting magnesia-alumina spinel raw material proportioning and conveying device comprises an alumina powder bin and a light-burned magnesia powder bin which are symmetrically arranged left and right; the outlet ends of the alumina powder bin and the light burned magnesium powder bin are connected with electric butterfly valves; the output ends of the electric butterfly valves are connected with electric stirrers; the output ends of the electric stirrers are connected with weightlessness weighing scales; the output ends of the weightlessness weighing scales are respectively connected with the hopper; the discharge end of the hopper is connected with a screw feeding mechanism for proportioning and conveying raw materials. The utility model can continuously and evenly convey two kinds of powder downwards by using the weightlessness weighing scales and the staggered spiral feeding mechanisms, can achieve higher control precision by accurately controlling the weight ratio of the alumina powder to the light burned magnesium powder by the two weightlessness weighing scales, has the characteristics of stable content of magnesium oxide and alumina in the obtained magnesia-alumina spinel raw material, low impurity content, good high-temperature performance and the like, and is suitable for popularization and application in a large range, and the operation steps of the device are simple.
Description
Technical Field
The utility model relates to the technical field of refractory material conveying equipment, in particular to an electric smelting magnesia-alumina spinel raw material batching conveying device.
Background
The electric smelting magnesia-alumina spinel is one kind of alkaline refractory material, and the electric smelting magnesia-alumina spinel product is one kind of refractory material synthesized through smelting alumina powder with purity over 98.5% and light burned magnesia powder with purity over 95% in different proportion in electric arc furnace. Magnesia-alumina spinel (MgO-AL) 2 O 3 ) The high-melting-point alkaline slag heat stabilizer has the advantages of high melting point, small thermal expansion, low thermal stress, good thermal vibration stability, stable chemical property and strong resistance to alkaline slag, and is one of key substances for prolonging service life. The electric smelting magnesia-alumina spinel is divided into magnesia-alumina spinel and magnesia-alumina spinel, and the quality of the magnesia-alumina spinel is one of key problems related to whether the magnesia-alumina spinel brick can achieve proper effect. Through laboratory tests and related data, the magnesia-alumina spinel has better erosion resistance, structural exfoliation resistance and thermal shock resistance at 20% -30%. However, various condition factors of the ladle are more in the production operation process, and the addition amount of the magnesia-alumina spinel is required to be more reasonable between 30 and 40 percent; the spinel content of the aluminum magnesium spinel refractory is generally 15% -30% (corresponding to 4% -10% MgO). Recently, it has been proposed to use a combination of a plurality of metal-It is thought that the low silicon (< 0.1% SiO) in the sintered aluminum-magnesium spinel refractory for steel ladles 2 ) With high silicon (1.0% SiO) 2 ) Compared with the aluminum-magnesium spinel brick, the service life of the ladle is reduced by 60 percent.
At present, the effective mixing of AL in the magnesia-alumina spinel raw material can be realized by precisely controlling the mixture to form the required magnesia-alumina spinel raw material during the batch transportation 2 O 3 The MgO content difference is controlled between 1 and 2 percent, the existing batching conveying device is not controlled accurately in the raw material proportioning part, and the operation is complicated in the use process; how to accurately control AL in magnesia-alumina spinel 2 O 3 And MgO content, which is the key of fully playing the roles of the magnesia-alumina spinel products and the magnesia-alumina spinel products, namely development of a batching conveying device is urgently needed to meet the actual demands so as to overcome the defects in the current practical application.
Disclosure of Invention
The utility model aims to provide an electric smelting magnesia-alumina spinel raw material proportioning and conveying device which is used for solving the problems of inaccurate raw material proportioning and complex operation in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
an electric smelting magnesia-alumina spinel raw material proportioning and conveying device comprises an alumina powder bin and a light-burned magnesia powder bin which are symmetrically arranged left and right; the outlet ends of the alumina powder bin and the light burned magnesium powder bin are connected with electric butterfly valves; the output ends of the electric butterfly valves are connected with electric stirrers; the output ends of the electric stirrers are connected with weightlessness weighing scales; the output ends of the weightlessness weighing scales are respectively connected with the hopper; the discharge end of the hopper is connected with a screw feeding mechanism for proportioning and conveying raw materials.
The screw feeding mechanism comprises a screw feeder A, a screw feeder B and a screw feeder C; screw feeder A and screw feeder B are staggered with each other in same horizontal plane, screw feeder C perpendicular to screw feeder A and screw feeder B's discharge gate below sets up, and screw feeder A and screw feeder B's discharge gate lower part all is mutually linked together with screw feeder C's conveying segment.
The screw feeder A is connected with a weightlessness metering scale at the lower part of the light-burned magnesium powder bin; the screw feeder B is connected with a weightlessness weighing scale at the lower part of the alumina powder bin; the discharge hole of the screw feeder C is mutually connected with an external smelting stokehold bin.
The included angle between the screw feeder A and the screw feeder B which are arranged in a staggered way is 30-40 degrees.
The screw feeder A and the screw feeder B are GLS-250 screw feeders.
The screw feeder C is a GLS-350 screw feeder.
Compared with the prior art, the utility model has the following beneficial effects: the weight loss weighing scales and the staggered spiral feeding mechanisms are matched for use, so that two kinds of powder materials can be continuously and uniformly conveyed downwards, the weight ratio of the alumina powder to the light burned magnesium powder can be accurately controlled through the two weight loss weighing scales, higher control precision can be achieved, the operation steps of the device are simple, and the obtained magnesia-alumina spinel raw materials have the characteristics of stable content of magnesium oxide and alumina, low impurity content, good high-temperature performance and the like, and are suitable for popularization and application in a large range.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a top view of the present utility model.
In the figure: 1. alumina powder feed bin, 2, light-burned magnesium powder feed bin, 3, electric butterfly valve, 4, electric stirrer, 5, weightlessness weighing scale, 6, screw feeder A,7, screw feeder B,8, screw feeder C,9, hopper.
Detailed Description
The utility model is described with reference to the accompanying drawings.
The electric smelting magnesia-alumina spinel raw material proportioning and conveying device shown in fig. 1 and 2 comprises an alumina powder bin 1 and a light-burned magnesia powder bin 2 which are symmetrically arranged left and right; the outlet ends of the alumina powder bin 1 and the light burned magnesium powder bin 2 are connected with an electric butterfly valve 3; the output ends of the electric butterfly valves 3 are connected with electric stirrers 4; the electric butterfly valve 3 is used for opening and closing the bin in time in the use process, and the electric stirrer 4 below the electric butterfly valve 3 can ensure continuous and uniform powder discharging and avoid powder blocking in the discharging process; the output ends of the weightlessness weighing scales 5 are respectively connected with a hopper 9; the discharge end of the hopper 9 is connected with a screw feeding mechanism for proportioning and conveying raw materials; the weightless weighing scale 5 is a weighing device for intermittent feeding and continuous discharging, and can achieve higher control precision due to the fact that the loss control is performed in the hopper, and the weightless weighing scale is easy to seal in structure, so that the weight of light burned magnesium powder can be accurately weighed during powder control.
The screw feeding mechanism comprises a screw feeder A6, a screw feeder B7 and a screw feeder C8; the screw feeders A6 and B7 are arranged in a staggered manner on the same horizontal plane, the included angle between the screw feeders A6 and B7 is 30-40 degrees, the included angle between the screw feeders A6 and B7 is selected to enable the distance between the discharge ports of the mixed material alumina powder bin 1 and the light burned magnesium powder bin 2 to be kept in the most reasonable range in the use process, uniform quantitative blanking is achieved when two kinds of powder are fed, and then a certain homogenization effect is achieved in the conveying process of the mixed material alumina powder bin 1 and the light burned magnesium powder bin 2; the screw feeder C8 is perpendicular to the lower parts of the discharge ports of the screw feeder A6 and the screw feeder B7, and the lower parts of the discharge ports of the screw feeder A6 and the screw feeder B7 are communicated with the conveying section of the screw feeder C8; the screw feeder A6 is connected with a weightlessness weighing scale 5 at the lower part of the light-burned magnesium powder bin 2; the screw feeder B7 is connected with a weightlessness weighing scale 5 at the lower part of the alumina powder bin 1; the discharge hole of the screw feeder C8 is connected with an external smelting stokehold bin; the screw feeder A6 and the screw feeder B7 are GLS-250 type screw feeders; the screw feeder C8 is a GLS-350 screw feeder, and the screw feeder C8 is large-diameter and convenient for homogenizing and conveying the mixture, so that the conveying efficiency is improved.
When the utility model is used, two kinds of powder in the alumina powder bin 1 and the light-burned magnesium powder bin 2 are continuously and uniformly conveyed downwards, the weight proportion of the alumina powder and the light-burned magnesium powder can be accurately controlled by two weightless weighing scales 5, the loss control is carried out in a hopper, the higher control precision can be achieved, and then the proportion materials are conveyed into a smelting stokehold bin through a screw feeder A6, a screw feeder B7 and a screw feeder C8, and the required different grades of magnesia-alumina spinel raw materials are formed after smelting; the device has the characteristics of simple operation steps, higher control precision, stable content of magnesium oxide and aluminum oxide in the obtained magnesia-alumina spinel raw material, low impurity content, good high-temperature performance and the like, and is suitable for large-scale popularization and application.
While the foregoing is directed to embodiments of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (6)
1. An electric smelting magnesia-alumina spinel raw material proportioning and conveying device comprises an alumina powder bin (1) and a light-burned magnesia powder bin (2) which are symmetrically arranged left and right; the method is characterized in that: the outlet ends of the alumina powder bin (1) and the light burned magnesium powder bin (2) are connected with an electric butterfly valve (3); the output ends of the electric butterfly valves (3) are connected with electric stirrers (4); the output ends of the electric stirrers (4) are connected with weightlessness weighing scales (5); the output ends of the weightlessness weighing scales (5) are respectively connected with the hopper (9); the discharge end of the hopper (9) is connected with a screw feeding mechanism for proportioning and conveying raw materials.
2. The apparatus for delivering raw materials of electric fused magnesia alumina spinel according to claim 1, wherein: the screw feeding mechanism comprises a screw feeder A (6), a screw feeder B (7) and a screw feeder C (8); screw feeder A (6) and screw feeder B (7) are staggered each other in same horizontal plane, screw feeder C (8) perpendicular to screw feeder A (6) and screw feeder B (7) discharge gate below sets up, and screw feeder A (6) and screw feeder B (7) discharge gate lower part all communicate each other with screw feeder C (8) delivery segment.
3. The apparatus for delivering raw materials of electric fused magnesia alumina spinel according to claim 2, wherein: the screw feeder A (6) is connected with a weightlessness weighing scale (5) at the lower part of the light-burned magnesium powder bin (2); the screw feeder B (7) is connected with a weightlessness weighing scale (5) at the lower part of the alumina powder bin (1); the discharge hole of the screw feeder C (8) is connected with an external smelting stokehold bin.
4. The apparatus for delivering raw materials of electric fused magnesia alumina spinel according to claim 2, wherein: the included angle between the screw feeder A (6) and the screw feeder B (7) is 30-40 degrees.
5. The apparatus for delivering raw materials of electric fused magnesia alumina spinel according to claim 2, wherein: the screw feeder A (6) and the screw feeder B (7) are GLS-250 screw feeders.
6. The apparatus for delivering raw materials of electric fused magnesia alumina spinel according to claim 2, wherein: the screw feeder C (8) is a GLS-350 screw feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320635907.XU CN219506957U (en) | 2023-03-28 | 2023-03-28 | Material proportioning and conveying device for electric smelting magnesia-alumina spinel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320635907.XU CN219506957U (en) | 2023-03-28 | 2023-03-28 | Material proportioning and conveying device for electric smelting magnesia-alumina spinel |
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| Publication Number | Publication Date |
|---|---|
| CN219506957U true CN219506957U (en) | 2023-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320635907.XU Active CN219506957U (en) | 2023-03-28 | 2023-03-28 | Material proportioning and conveying device for electric smelting magnesia-alumina spinel |
Country Status (1)
| Country | Link |
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| CN (1) | CN219506957U (en) |
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2023
- 2023-03-28 CN CN202320635907.XU patent/CN219506957U/en active Active
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