Efficient and energy-saving magnesite block porous light burning annular kiln

Abstract

The invention relates to the technical field of magnesite block light burning, and discloses an efficient and energy-saving magnesite block porous light burning annular kiln which comprises a vertical feeding cylinder, the vertical feeding cylinder is installed in the center area of the top of a kiln body, and smoke exhaust holes communicated with the outside space are formed in the circumferential face, close to the top of the kiln body, of the kiln body. An annular section composed of an inner side fire-resistant lining and an outer side fire-resistant lining is formed in the vertical feeding cylinder, and a plurality of annular array type internal combustion chambers are arranged in the kiln body and located in the annular section. The efficient and energy-saving magnesite block porous light burning annular kiln is a vertical circular kiln, magnesite with the particle size being 30-100 mm serves as raw materials, the cross section of the magnesite block porous light burning annular kiln is annular, a plurality of internal combustion chambers are arranged in a light burning zone, a plurality of coolers are arranged in a cooling zone, heat is evenly supplied to the internal combustion chambers, finished products are evenly cooled by the coolers, the light burning temperature of the materials is even, and the temperature of combustion-supporting air is high; the product quality is improved, and the fuel consumption is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of light-burning of magnesite blocks, and in particular relates to a highly efficient and energy-saving porous light-burning ring kiln for magnesite blocks. Background Art

[0002] Lightly burned magnesia is widely used in metallurgy, chemical industry, building materials and other industries, and is an irreplaceable auxiliary material for the steel industry. The main thermal equipment for lightly burned magnesia block materials in my country is the ordinary vertical kiln. When the production scale is increased, the inner diameter of the ordinary vertical kiln is enlarged, resulting in the flame not being able to spray to the center of the material, and the kiln wall effect is large, resulting in uneven light burning temperature of the vertical kiln section, uneven product quality, and high energy consumption. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a highly efficient and energy-saving magnesite block porous light-burning ring kiln, which is a vertical circular kiln. The raw material is magnesite with a particle size of 30-100 mm, the cross-section is annular, the light-burning zone is provided with multiple internal combustion chambers, and a plurality of coolers are arranged in the cooling area. The internal combustion chambers are evenly heated, the coolers are evenly cooled to cool the finished products, the light-burning temperature of the materials is uniform, the temperature of the combustion-supporting air is high, the product quality is improved, the fuel consumption is reduced, and the above-mentioned technical problems are solved.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a highly efficient and energy-saving porous light-burning ring kiln of magnesite blocks, comprising a kiln body with a refractory lining installed inside and a heat storage material placed at the center of the kiln body, and also comprising a vertical charging barrel, wherein the vertical charging barrel is installed in the central area of ​​the top of the kiln body, and the kiln body is provided with a smoke exhaust hole connected to the external space on the circumferential surface near the top of the kiln body, and the interior of the vertical charging barrel forms an annular section composed of an inner refractory lining and an outer refractory lining, and the kiln body is provided with a plurality of annular array-type internal combustion chambers inside the annular section, and every two of the internal combustion chambers are connected to the inner refractory lining. The area between the combustion chambers constitutes a light burning hole, and the interior of the kiln body is provided with a plurality of internal combustion chamber flame-spraying holes connecting the internal combustion chamber and the adjacent light burning holes, the kiln body is provided with an internal combustion chamber air inlet at the bottom end of the internal combustion chamber, the circumferential surface of the kiln body is provided with an internal combustion chamber fuel inlet connecting the internal combustion chamber and the external space, the kiln body is installed with a finished product cooler at the bottom of the internal combustion chamber air inlet hole, the circumferential surface of the kiln body is provided with a plurality of finished product cooler air inlet holes connecting the area where the finished product cooler is located, and the finished product cooler is provided with cooling holes for gas flow.

[0005] Preferably, the internal combustion chamber is made of refractory material and has a rectangular box-shaped structure.

[0006] Preferably, the finished cooler is made of metal material and has a rectangular box-shaped structure.

[0007] Preferably, the kiln body is constructed from magnesite with a particle size of 30-100 mm.

[0008] Compared with the prior art, the present invention provides a highly efficient and energy-saving porous light-burning ring kiln of magnesite blocks, which has the following beneficial effects:

[0009] It is a vertical circular kiln. The raw material is magnesite with a particle size of 30-100mm. The cross section is annular. The light burning zone is equipped with multiple internal combustion chambers and the cooling area is equipped with several coolers. The internal combustion chambers are evenly heated, and the coolers cool the finished products evenly. The light burning temperature of the materials is uniform, and the combustion air temperature is high, which improves the product quality and reduces fuel consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention;

[0011] Figure 2 For the present invention Figure 1 Cross-section of the middle AA area;

[0012] Figure 3 For the present invention Figure 1 Cross-section of the middle BB area;

[0013] Figure 4 For the present invention Figure 1 Cross-section of the mid-CC area;

[0014] Figure 5 For the present invention Figure 1 Cross-section of the middle DD area;

[0015] Figure 6 For the present invention Figure 1 Cross-section of the middle EE area;

[0016] Figure 7 For the present invention Figure 1 Cross-sectional view of the FF part.

[0017] Among them: 1. Vertical charging barrel; 2. Smoke exhaust hole; 3. Annular section; 4. Internal combustion chamber flame hole; 5. Internal combustion chamber; 6. Internal combustion chamber air inlet hole; 7. Internal combustion chamber fuel inlet; 8. Finished product cooler; 9. Finished product cooler air inlet hole; 10. Light burning hole; 11. Cooling hole; 12. Kiln body; 13. Heat storage material. DETAILED DESCRIPTION

[0018] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 - Figure 7 A highly efficient and energy-saving porous light-burning ring kiln of magnesite blocks comprises a kiln body 12 with a refractory lining installed inside and a heat storage material 13 placed at the center of the kiln body 12, wherein the kiln body 12 is constructed of magnesite with a particle size of 30-100 mm as a raw material, and further comprises a vertical charging barrel 1, wherein the vertical charging barrel 1 is installed in the central area of ​​the top of the kiln body 12, wherein the kiln body 12 is provided with a smoke exhaust hole 2 connected to the outside space on the circumferential surface near the top thereof, wherein the interior of the vertical charging barrel 1 forms an annular section 3 consisting of an inner refractory lining and an outer refractory lining, wherein the kiln body 12 is provided with a plurality of annular array-type internal combustion chambers 5 located inside the annular section 3, wherein the internal combustion chambers 5 are made of refractory materials and are in the shape of a rectangular box structure, wherein every two of the internal combustion chambers 5 are provided with a plurality of annular array-type internal combustion chambers 5 ... The area between the internal combustion chambers 5 constitutes a light burning hole 10, and the interior of the kiln body 12 is provided with a plurality of internal combustion chamber flame holes 4 connecting the internal combustion chamber 5 and the adjacent light burning holes 10, and the kiln body 12 is provided with an internal combustion chamber air inlet 6 at the bottom end of the internal combustion chamber 5, and the circumferential surface of the kiln body 12 is provided with an internal combustion chamber fuel inlet 7 connecting the internal combustion chamber 5 and the external space, and the kiln body 12 is installed with a finished product cooler 8 at the bottom of the internal combustion chamber air inlet 6, and the finished product cooler 8 is made of metal material and has a rectangular box-shaped structure, and the circumferential surface of the kiln body 12 is provided with a plurality of finished product cooler air inlet holes 9 connecting the area where the finished product cooler 8 is located, and the finished product cooler 8 is provided with cooling holes 11 for gas flow.

[0020] When in use, the material magnesite enters the kiln from the vertical feeding barrel 1, and the exhaust gas is discharged from the kiln through the smoke exhaust hole 2. The material entering the kiln is preheated by the exhaust gas on the annular section 3 and then enters the light burning zone. The high-temperature exhaust gas generated by the internal combustion chamber 5 on the light burning zone is sprayed from the injection hole 4 into the material in the light burning hole 10 to lightly burn the material. The material is lightly burned to become a finished product, and the finished product enters the finished product cooling hole 11 in the cooling zone for cooling. The cooled finished product is discharged from the kiln from the lower part of the kiln, and the cooling air enters the finished product cooler 8 from the finished product cooler air inlet hole 9 to cool the finished product in the cooling hole 11, and then the temperature increases, and then the air enters the internal combustion chamber 5 through the internal combustion chamber air inlet hole 6 to assist combustion.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly efficient and energy-saving magnesite block porous light-burning ring kiln, comprising a kiln body (12) with a refractory lining installed inside and a heat storage material (13) placed at the center of the kiln body (12), characterized in that: Also includes, A vertical charging barrel (1) is installed in the central area of ​​the top of a kiln body (12); the kiln body (12) is provided with a smoke exhaust hole (2) connected to the outside space on a circumferential surface near the top thereof; the interior of the vertical charging barrel (1) forms an annular section (3) composed of an inner refractory lining and an outer refractory lining; the kiln body (12) is provided with a plurality of annular array-type internal combustion chambers (5) located inside the annular section (3); the area between each two of the internal combustion chambers (5) forms a light burning hole (10); the interior of the kiln body (12) is provided with a plurality of internal combustion chambers (5) connected to adjacent internal combustion chambers (5); The kiln body (12) is provided with an internal combustion chamber flame-spraying hole (4) at the bottom end of the internal combustion chamber (5); the kiln body (12) is provided with an internal combustion chamber air inlet hole (6) at the bottom end of the internal combustion chamber (5); the circumferential surface of the kiln body (12) is provided with an internal combustion chamber fuel inlet (7) connecting the internal combustion chamber (5) and the external space; the kiln body (12) is provided with a finished product cooler (8) at the bottom of the internal combustion chamber air inlet hole (6); the circumferential surface of the kiln body (12) is provided with a plurality of finished product cooler air inlet holes (9) connecting the area where the finished product cooler (8) is located; and the finished product cooler (8) is provided with a cooling hole (11) for gas flow.

2. The high-efficiency and energy-saving porous light-burning ring kiln of magnesite blocks according to claim 1 is characterized by: The internal combustion chamber (5) is made of refractory materials and has a rectangular box-shaped structure.

3. The high-efficiency and energy-saving porous light-burning ring kiln of magnesite blocks according to claim 1 is characterized by: The finished product cooler (8) is made of metal material and has a rectangular box-shaped structure.

4. The high-efficiency and energy-saving porous light-burning ring kiln of magnesite blocks according to claim 1 is characterized by: The kiln body (12) is constructed from magnesite with a particle size of 30-100 mm as a raw material.

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