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CN-224230648-U - Iron oxide calciner based on oxygen waste heat recovery

CN224230648UCN 224230648 UCN224230648 UCN 224230648UCN-224230648-U

Abstract

The utility model discloses an iron oxide calciner based on oxygen waste heat recovery, which comprises a fixed furnace body which is transversely arranged, wherein a rotary roller is arranged in the fixed furnace body, a calcination area is reserved between the rotary roller and the inner furnace wall of the fixed furnace body, rotary shafts are arranged on two sides of the rotary roller, the rotary shafts correspondingly extend out from the fixed furnace body, and rotary motors are correspondingly arranged on the rotary shafts on the left side. The device is provided with the waste heat recovery pipe, the collected waste heat is injected into the solid furnace body for calcining the ferric oxide, so that energy can be effectively saved, then the calcining effect can be effectively improved by being matched with other heating elements and the like, the area between the fixed furnace body and the rotating roller is a calcining area, the stirring plate arranged on the rotating roller can correspondingly generate stirring function, the ferric oxide can be uniformly placed in the calcining area, and the calcining effect is improved.

Inventors

  • SHAN MIAO
  • ZHANG MING
  • LU YUNFEI

Assignees

  • 江苏宇星科技有限公司

Dates

Publication Date
20260512
Application Date
20250514

Claims (9)

  1. 1. The iron oxide calciner based on oxygen waste heat recovery is characterized by comprising a fixed furnace body (1) which is transversely arranged, wherein a rotary roller (2) is arranged in the fixed furnace body (1), a calcination area (3) is reserved between the rotary roller (2) and the inner furnace wall of the fixed furnace body (1), rotary shafts (4) are arranged on two sides of the rotary roller (2), the rotary shafts (4) correspondingly extend out of the fixed furnace body (1), and a rotary motor (5) is correspondingly arranged on the rotary shaft (4) on the left side; A plurality of stirring plates (6) are also arranged on the rotary roller (2), the stirring plates (6) are uniformly arranged at intervals and are all in a divergent shape, the stirring plates (6) extend into the calcining area (3), the width of the stirring plates (6) is consistent with that of the rotary roller (2), and the lengths of the stirring plates (6) are correspondingly arranged, so that the stirring plates (6) extend to the inner wall of the fixed furnace body (1), and the stirring plates (6) are driven to rotate in the calcining area (3) when the rotary roller (2) rotates; and still install waste heat recovery pipe (7) on the solid furnace body, this waste heat recovery pipe (7) is with the heat injection of retrieving in calcining zone (3) in fixed furnace body (1), and when the rotation of inside rotatory roller (2), spread heat in whole calcining zone (3) through stirring plate (6).
  2. 2. The iron oxide calciner based on oxygen waste heat recovery according to claim 1, wherein the waste heat recovery pipes (7) are arranged in the upper half area of the fixed furnace body (1).
  3. 3. The iron oxide calciner based on oxygen waste heat recovery according to claim 2, wherein three groups of waste heat recovery pipes (7) are arranged in total, one group of waste heat recovery pipes is arranged at the position of the right upper end of the fixed furnace body (1), the other two groups of waste heat recovery pipes are symmetrically arranged at the positions of the two sides of the upper end of the fixed furnace body (1), and the three groups of waste heat recovery pipes (7) can inject recovered hot gas into the fixed furnace body (1).
  4. 4. The iron oxide calciner based on oxygen waste heat recovery according to claim 1, wherein a feed inlet (9) and a feed door plate (10) are arranged at the upper end part of the fixed furnace body (1) through a hinge assembly (8), and a discharge outlet (11) and a discharge door plate (12) are arranged at the lower end part of the fixed furnace body (1) through the hinge assembly (8).
  5. 5. The iron oxide calciner based on oxygen waste heat recovery as claimed in claim 1, wherein the two sides of the lower end of the fixed furnace body (1) are also provided with protective covers (13), and the protective covers (13) are provided with heating elements (14).
  6. 6. The iron oxide calciner based on oxygen waste heat recovery according to claim 1, wherein fifteen groups of stirring plates (6) on the rotary roller (2) are arranged, arc-shaped shoveling plates (15) are further arranged at the end parts of each stirring plate (6), the shoveling plates (15) are tightly attached to the inner wall of the fixed furnace body (1), and the stirring plates (6) and the shoveling plates (15) are integrally arranged in a T shape.
  7. 7. The iron oxide calciner based on oxygen waste heat recovery as claimed in claim 1, wherein the rotating shafts (4) on two sides of the rotating roller (2) are correspondingly arranged through bearing pieces (16), and the bearing pieces (16) are further provided with mechanical sealing assemblies.
  8. 8. The iron oxide calciner based on oxygen waste heat recovery as claimed in claim 7, wherein a hollow chamber (17) is further arranged inside the rotary roller (2), a heating element (14) is further arranged in the hollow chamber (17), a rotary motor (5) is arranged on a rotary shaft (4) on the left side of the rotary roller (2), an electric conduction slip ring (18) is correspondingly arranged on the rotary shaft (4) on the right side, one side of the electric conduction slip ring (18) is connected to the heating element (14), and a power supply device (19) is externally connected to the other side of the electric conduction slip ring.
  9. 9. The iron oxide calciner based on oxygen waste heat recovery according to claim 8, wherein the rotating roller (2) and the stirring plate (6) are made of heat conducting materials.

Description

Iron oxide calciner based on oxygen waste heat recovery Technical Field The utility model relates to the technical field of iron oxide calciners, in particular to an iron oxide calciner based on oxygen waste heat recovery. Background In the prior art, an iron oxide calciner is an apparatus for converting a compound containing an iron element (e.g., iron hydroxide, ferrous carbonate, etc.) into iron oxide by high-temperature calcination, and the prior art iron oxide calciner generally includes the following: Rotary kiln calciners, which are a common type of iron oxide calciner. The furnace body is an inclined rotary cylinder, raw materials are added from the high end, and gradually move to the low end under the action of gravity along with the rotation of the cylinder, and calcination is completed in the moving process. The rotary kiln type calciner has the advantages of high production capacity, stable operation, uniform temperature and the like, and is suitable for large-scale production of ferric oxide. The tunnel kiln type calciner is a continuous calciner, the furnace body is tunnel-shaped, raw materials move in the tunnel in a certain mode, and calcination is completed through different temperature areas. The tunnel kiln has the advantages of realizing automatic production, being accurate in temperature control and stable in product quality, and being suitable for producing high-quality ferric oxide products. The box-type calciner has a simpler structure, is similar to a box body, and is used for calcining raw materials in the box body. The method is suitable for producing small-batch and multi-variety ferric oxide, has the advantages of high flexibility, low investment cost and the like, and has relatively low production efficiency. In the technical equipment, a common calciner is usually a rotary calciner, and other calciners with other structures, such as a calciner for producing ferric oxide disclosed in an authorized bulletin number of CN217403107U, are also arranged on the basis of the conventional rotary calciner. However, the existing calcining equipment has the defects that on one hand, the structural arrangement is relatively complex, particularly the rotary structure is required, the rotation of an inner furnace body and an outer furnace body is required to be ensured, the structural design is unreasonable, and the calcining effect is affected. Therefore, in order to solve the above problems, there is a need to develop an iron oxide calciner based on oxygen waste heat recovery which has a reasonable structure, energy saving and uniform calcination. Disclosure of utility model The utility model aims to provide an iron oxide calciner based on oxygen waste heat recovery, aiming at the defects in the prior art, and the technical scheme is as follows: The iron oxide calciner based on oxygen waste heat recovery comprises a fixed furnace body which is transversely arranged, wherein a rotary roller is arranged in the fixed furnace body, a calcination area is reserved between the rotary roller and the inner side furnace wall of the fixed furnace body, rotary shafts are arranged on two sides of the rotary roller, the rotary shafts correspondingly extend out from the fixed furnace body, and rotary motors are correspondingly arranged on the rotary shafts on the left side; the rotary roller is also provided with a plurality of stirring plates which are uniformly arranged at intervals and are all in a divergent shape, the stirring plates extend into the calcining area, the width of the stirring plates is consistent with that of the rotary roller, and the lengths of the stirring plates are correspondingly arranged, so that the stirring plates extend to the inner wall of the fixed furnace body, and the stirring plates are driven to rotate in the calcining area when the rotary roller rotates; And the solid furnace body is also provided with a waste heat recovery pipe, the waste heat recovery pipe injects the recovered heat into the calcining zone in the fixed furnace body, and when the internal rotating roller rotates, the heat is diffused into the whole calcining zone through the stirring plate. Further, the waste heat recovery pipes are all arranged in the upper half area of the fixed furnace body. Further, the waste heat recovery pipes are provided with three groups, one group is arranged at the position of the right upper end of the fixed furnace body, the other two groups are symmetrically arranged at the positions of the two sides of the upper end of the fixed furnace body, and the three groups of waste heat recovery pipes can inject the recovered hot gas into the fixed furnace body. Further, the upper end part of the fixed furnace body is provided with a feed inlet and a feed door plate through a hinge assembly, and the lower end part of the fixed furnace body is provided with a discharge outlet and a discharge door plate through a hinge assembly. Further, the two sides of the lower end of the fixed f