Anti-overflow equipment for calcination of high-sulfur low-silicon ferrophosphorus

Abstract

The utility model discloses high-sulfur low-silicon ferrophosphorus calcination anti-overflow equipment, which relates to the technical field of high-sulfur low-silicon ferrophosphorus calcination anti-overflow, and comprises a blast furnace, a feed port arranged above the blast furnace, an air bellow and a reaction box, a calcination table is arranged at the bottom end in the blast furnace, an anti-overflow ring is arranged right above the calcination table, and the reaction box is arranged in the blast furnace. The anti-overflow ring is in a circular truncated cone shape, the diameter of an upper anti-overflow ring opening is larger than that of a lower anti-overflow ring opening, airflow holes are evenly and vertically formed in the anti-overflow ring, and an anti-overflow mechanism is arranged in the upper feeding opening of the blast furnace. The anti-overflow device is reasonable in design structure, liquid can be effectively prevented from boiling and moving upwards during calcination by arranging the anti-overflow ring on the calcination table in the blast furnace, meanwhile, the anti-overflow mechanism is arranged at the bottom end of the feed port and above the connecting pipeline, the feed port can be closed after raw materials are added, harmful gas is prevented from overflowing through the feed port, and the anti-overflow device is suitable for industrial production. And harm is caused to personnel.

Description

Technical Field

[0001] The utility model relates to the technical field of high-sulfur low-silicon ferrophosphorus calcination overflow prevention, in particular to high-sulfur low-silicon ferrophosphorus calcination overflow prevention equipment. Background Art

[0002] High-sulfur, low-silicon ferrophosphorus is a special type of ferrophosphorus with a relatively high sulfur content and a low silicon content. This type of ferrophosphorus plays a unique role in some specific steel production processes, but due to its composition characteristics, it also faces some special problems during processing such as calcination.

[0003] The prior art publication number CN210117388U discloses a smelting device for low-silicon, high-sulfur molten iron, which includes a main body and a recovery part. The feed port in the main body is opened at the top of the shell, and the shell is connected to a discharge pipe with a one-way valve. A bottom plate is installed on the shell just below the discharge pipe, and air holes are provided on the bottom plate. Three layers of electromagnet mesh are installed equidistantly from top to bottom below the bottom plate, and the electromagnet mesh is connected to conductive wires, and the wires pass through the shell. Air inlets are provided on both sides of the bottom of the shell below the electromagnet mesh, and a slag discharge port is provided in the middle of the bottom of the shell, as well as a reaction box, an exhaust duct and a fan. It has the advantages of slag screening and treatment, and harmful gas recovery and treatment.

[0004] Although the above solution solves the problem of slag and harmful gas recovery, it does not solve the problem of gas overflowing from the feed port when adding raw materials or not filling raw materials. The gas overflowing from the feed port will also cause certain harm to personnel, as well as the problem of boiling liquid in the furnace entering the fan through the pipeline during calcination and the problem of liquid flow after calcination. For this reason, we provide a high-sulfur, low-silicon ferrophosphorus calcination overflow prevention equipment to solve the above problems. Utility Model Content

[0005] (1) Technical problems solved

[0006] The purpose of the utility model is to make up for the deficiencies of the prior art and provide a high-sulfur, low-silicon ferrophosphorus calcining and overflow prevention device.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-sulfur, low-silicon ferrophosphorus calcining overflow prevention equipment, comprising a blast furnace, a feed port arranged above the blast furnace, a bellows and a reaction box, a calcining table is arranged at the bottom end of the blast furnace, an overflow prevention ring is arranged directly above the calcining table, the overflow prevention ring is in the shape of a truncated cone, the diameter of the upper overflow prevention ring opening is larger than the diameter of the lower overflow prevention ring opening, air flow holes are evenly and vertically opened in the overflow prevention ring, an overflow prevention mechanism is arranged inside the feed port above the blast furnace, the overflow prevention mechanism is located at the upper end of the connecting pipe arranged above the blast furnace, and the connecting pipe is connected to the inside of the bellows, and a check valve is arranged in the connecting pipe.

[0009] Furthermore, the anti-overflow mechanism includes a connecting block fixed between the blast furnace and the feed port, a rotating shaft passing between the connecting blocks, a sealing plate fixed on the surface of the rotating shaft, and a spring clamped between the rotating shaft and the connecting block.

[0010] Furthermore, the wind box is provided with a wind-gathering blower, an exhaust duct is provided on one side of the wind box, the exhaust duct is connected to the reaction box, and a valve is provided on the side of the reaction box.

[0011] Furthermore, the bottom end of the calcining table and the bottom end of the blast furnace are set as a horizontal slope or an inclined slope. When the bottom end of the calcining table and the bottom end of the blast furnace are set as an inclined slope, an anti-slip guide groove is provided on the surface.

[0012] Furthermore, an air intake pipe is provided at the bottom of the blast furnace, and the air intake pipe passes through the blast furnace and the calcining table to deliver the gas to the interior of the blast furnace.

[0013] Furthermore, a discharge pipe is provided on the side of the blast furnace, and a one-way valve is provided in the discharge pipe.

[0014] (3) Beneficial effects:

[0015] Compared with the existing technology, the high-sulfur, low-silicon ferrophosphorus calcination overflow prevention equipment has the following beneficial effects:

[0016] 1. The utility model can effectively prevent the liquid from boiling and moving upward during calcination by arranging an anti-overflow ring on the calcining table inside the blast furnace. At the same time, an anti-overflow mechanism is arranged at the bottom of the feed port and above the connecting pipe to close the feed port after the raw materials are added, so as to prevent harmful gases from overflowing through the feed port and causing harm to personnel.

[0017] Second, the utility model provides an inclined slope and a guide groove at the bottom of the blast furnace and the bottom of the calcining table, which helps to increase the flow speed of the liquid after calcination and also facilitates the rapid outflow of the liquid in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the main structure of the overflow prevention mechanism of the present invention;

[0020] Figure 3 This is a schematic diagram of the main structure of the airflow in the utility model;

[0021] Figure 4 This is a schematic diagram of the main structure of the inclined slope at the bottom of the blast furnace in the utility model;

[0022] Figure 5 This is a schematic diagram of the top view of the anti-overflow mechanism in the present invention;

[0023] Figure 6 This is a schematic diagram of the top view of the anti-overflow ring in the utility model;

[0024] Figure 7 This is a top view of the inclined slope and guide trough structure of the utility model;

[0025] Figure 8 This is an enlarged schematic diagram of the main structure of the overflow prevention mechanism in the present invention.

[0026] In the figure: 1. Feed inlet; 2. Anti-overflow mechanism; 201. Sealing plate; 202. Rotating shaft; 203. Spring; 204. Connecting block; 3. Connecting pipe; 4. Blast furnace; 5. Anti-overflow ring; 501. Air flow hole; 6. One-way valve; 7. Discharge pipe; 8. Calcination table; 9. Air inlet pipe; 10. Check valve; 11. Bellows; 12. Fan; 13. Exhaust pipe; 14. Reaction box; 15. Valve; 16. Guide trough. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1

[0029] The utility model provides a technical solution: a high-sulfur, low-silicon, ferrophosphorus calcining overflow prevention device, comprising a calcining blast furnace 4, a feed port 1 for adding raw materials arranged above the blast furnace 4, and a wind box 11 and a reaction box 14 fixed to the outside, a calcining table 8 is arranged at the bottom end of the blast furnace 4, the calcining table 8 calcines the raw materials in the blast furnace 4 through the top and surface, and an overflow prevention ring 5 is arranged directly above the calcining table 8 to prevent the flame or raw materials from excessively overflowing upward during calcination, wherein the raw materials above the calcining table 8 flow to the bottom end of the blast furnace 4 through the gap between the overflow prevention ring 5 and the calcining table 8 after calcination, and the overflow prevention ring 5 is in the shape of a truncated cone, the diameter of the upper overflow prevention ring 5 is larger than the diameter of the lower overflow prevention ring 5, which can avoid excessive upward impact when the raw materials are boiling, and at the same time, a plurality of air flow holes 501 are evenly and vertically opened in the overflow prevention ring 5, and the generated gas can move upward through the air flow holes 501. Figure 3 , an anti-overflow mechanism 2 is provided inside the feed port 1 above the blast furnace 4. Figure 8As shown, the overflow prevention mechanism 2 includes a connecting block 204 fixed between the blast furnace 4 and the feed port 1, a rotating shaft 202 passing through the connecting block 204, a sealing plate 201 fixed on the surface of the rotating shaft 202, and a spring 203 clamped between the rotating shaft 202 and the connecting block 204. When feeding, the sealing plate 201 will cause the rotating shaft 202 to squeeze the spring 203 downward. Figure 2 As shown, after the raw material addition is completed, the sealing plate 201 will be reset as shown in FIG. Figure 1 and Figure 3 As shown, it also blocks the harmful gases from escaping during calcination in the blast furnace 4;

[0030] The overflow prevention mechanism 2 is located at the upper end of the connecting pipe 3 arranged above the blast furnace 4, and the connecting pipe 3 is connected to the inside of the wind box 11, and a check valve 10 is provided in the connecting pipe 3, so that the gas generated during calcination will enter the inside of the wind box 11 through the connecting pipe 3, and the wind-gathering fan 12 provided in the wind box 11 will be used; and the gas will be sent to the reaction box 14 through the exhaust pipe 13 connected to one side of the wind box 11. After the harmful gas reacts in the reaction box 14, the valve 15 on the side of the reaction box 14 is opened and discharged.

[0031] Specifically, an air intake pipe 9 is provided at the bottom end of the blast furnace 4, and the air intake pipe 9 passes through the blast furnace 4 and the calcining table 8 to send the gas to the inside of the blast furnace 4 for further combustion to fully provide gas to the inside of the blast furnace 4. At the same time, a discharge pipe 7 is provided on the side of the blast furnace 4, and a one-way valve 6 is provided in the discharge pipe 7. After the raw materials inside the blast furnace 4 are calcined, the liquid will flow out through the horizontal slopes at the bottom end of the blast furnace 4 and the bottom end of the calcining table 8 through the one-way valve 6 in the discharge pipe 7.

[0032] Example 2

[0033] According to the technical solution provided in the first embodiment, in order to speed up the liquid flow rate after the calcination at the bottom of the blast furnace 4, the bottom of the calcination platform 8 and the bottom of the inner bottom of the blast furnace 4 are set as an inclined slope. Figure 4 , and anti-slip guide grooves 16 are provided on the inclined slopes at the bottom of the calcining platform 8 and the bottom of the blast furnace 4 so that the calcined liquid can flow quickly to the discharge pipe 7. Figure 7 Flow out quickly through the discharge pipe 7 and the one-way valve 6.

[0034] It should be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate positions or location relationships based on the positions or location relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", and "connected" should be understood in a broad sense. For example, "installed" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a mechanical connection or an electrical connection; "connected" can mean a direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-sulfur, low-silicon ferrophosphorus calcining overflow prevention device, comprising a blast furnace (4), a feed port (1) arranged above the blast furnace (4), a wind box (11) and a reaction box (14), characterized in that: A calcining platform (8) is provided at the bottom end of the blast furnace (4), and an overflow prevention ring (5) is provided directly above the calcining platform (8). The overflow prevention ring (5) is in a truncated cone shape, and the diameter of the upper overflow prevention ring (5) is larger than the diameter of the lower overflow prevention ring (5). Air flow holes (501) are uniformly and vertically opened in the overflow prevention ring (5). An overflow prevention mechanism (2) is provided inside the feed port (1) above the blast furnace (4). The overflow prevention mechanism (2) is located at the upper end of a connecting pipe (3) provided above the blast furnace (4), and the connecting pipe (3) is connected to the inside of the wind box (11), and a check valve (10) is provided in the connecting pipe (3).

2. The high-sulfur, low-silicon ferrophosphorus calcination overflow prevention equipment according to claim 1, characterized in that: The overflow prevention mechanism (2) comprises a connecting block (204) fixed between the blast furnace (4) and the feed port (1), a rotating shaft (202) passing through the connecting block (204), a sealing plate (201) fixed on the surface of the rotating shaft (202), and a spring (203) clamped between the rotating shaft (202) and the connecting block (204).

3. The high-sulfur, low-silicon ferrophosphorus calcination overflow prevention equipment according to claim 1, characterized in that: The wind box (11) is provided with a wind-gathering fan (12), one side of the wind box (11) is provided with an exhaust pipe (13), the exhaust pipe (13) is communicated with a reaction box (14), and a valve (15) is provided on the side of the reaction box (14).

4. The high-sulfur, low-silicon ferrophosphorus calcination overflow prevention equipment according to claim 1, characterized in that: The bottom end of the calcining platform (8) and the bottom end of the interior of the blast furnace (4) are set as a horizontal slope or an inclined slope. When the bottom end of the calcining platform (8) and the bottom end of the interior of the blast furnace (4) are set as an inclined slope, an anti-slip guide groove (16) is provided on the surface.

5. The high-sulfur, low-silicon ferrophosphorus calcination overflow prevention equipment according to claim 1, characterized in that: An air intake pipe (9) is provided at the bottom of the blast furnace (4), and the air intake pipe (9) passes through the blast furnace (4) and the calcining table (8) to deliver gas into the interior of the blast furnace (4).

6. The high-sulfur, low-silicon ferrophosphorus calcination overflow prevention equipment according to claim 1, characterized in that: A discharge pipe (7) is provided on the side of the blast furnace (4), and a one-way valve (6) is provided in the discharge pipe (7).

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