CN219014942U - Rotary kiln for metal smelting - Google Patents

Abstract

The utility model discloses a metal smelting rotary kiln, which comprises a rotary kiln rotary drum, wherein two first material separating plates and two second material separating plates which are opposite to each other are fixedly arranged in the rotary kiln rotary drum, the rotary kiln rotary drum is divided into two cabin sections by the first material separating plates and the second material separating plates, the first material separating plates and the second material separating plates are respectively a first roasting cavity and a second roasting cavity, about half materials in the rotary kiln can be lifted and rolled separately through the circulating rotation of the first material separating plates and the second material separating plates, so that excessive materials are prevented from accumulating at the bottom of the rotary kiln rotary drum, the heat exchange efficiency and the oxidizing roasting efficiency of the materials are improved, the unit filling quantity of the materials can be increased as much as possible compared with the traditional single-cavity structure through the matching design of the two material separating plates, the production efficiency of the rotary kiln is further improved, and the material leakage through holes can increase the flow rate and the mixing rate of the materials in the first roasting cavity and the second roasting cavity in the overturning process of the first material separating plates and the second material separating plates, and the temperature field is more uniform.

Description

Rotary kiln for metal smelting

Technical Field

The utility model belongs to the technical direction of rotary kilns, and particularly relates to a metal smelting rotary kiln.

Background

The rotary kiln refers to a rotary calcining kiln (commonly called a rotary kiln), has a shape similar to a rotary bed, is also called a rotary bed kiln, and is mainly used for magnetizing and roasting lean iron ores in iron and steel plants in metallurgical industry; such as oxidative roasting of chromium, nickel iron ore, and the like.

At present, when the existing rotary kiln is in production operation, mineral raw materials can only roll and overturn in the bottom area of the rotary drum under the radial rotation action of the rotary drum, so that the existing rotary drum structure cannot be filled with excessive materials, the heat exchange effect and the roasting quality of the materials can be affected once the materials are stacked excessively, the production efficiency of the rotary kiln can be reduced under the condition of low filling rate, and in view of the problems, the metal smelting rotary kiln is provided.

Disclosure of Invention

The utility model aims at solving the problems of low heat exchange efficiency and low filling rate of the rotary kiln in the prior art when in operation.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a metal smelting rotary kiln, includes the rotary kiln rotary drum, the inside fixed first partition board and the second partition board that are provided with of rotary kiln rotary drum that are opposite each other, first partition board and second partition board divide into two cabin sections that the volume equals with the rotary kiln rotary drum, are first calcination chamber and second calcination chamber respectively, the end that is close to of first partition board and second partition board is reserved there is the buffer gap to first calcination chamber communicates each other through between buffer gap and the second calcination chamber, wherein, does not limit to setting up first partition board and second partition board in the rotary kiln rotary drum, also can set up to two partition boards, or three partition boards, and a plurality of partition boards follow rotary kiln rotary drum inboard annular array.

The utility model further discloses that the first material separating plate and the second material separating plate are respectively provided with an arc pocket corresponding to one side of the first roasting cavity and one side of the second roasting cavity, wherein extension lines of the two arc pockets are converged at the axle center point of the rotary kiln rotary drum, and meanwhile, the junction of the root parts of the first material separating plate and the second material separating plate and the inner wall of the rotary kiln rotary drum is of an arc top chamfer structure.

According to the utility model, the plate bodies of the first material separating plate and the second material separating plate are provided with the material leakage through holes, meanwhile, the material leakage through holes are uniformly distributed along the length direction of the first material separating plate and the second material separating plate, and the first roasting cavity is communicated with the second roasting cavity through the material leakage through holes.

The utility model further discloses that the inner wall of the cylinder body of the rotary kiln rotary cylinder and the outer sides of the inner walls of the first roasting cavity and the second roasting cavity are provided with buffer plates which are uniformly distributed, the length direction of the buffer plates is consistent with the length direction of the rotary kiln rotary cylinder, and the buffer plates are uniformly distributed along the length direction of the first roasting cavity and the second roasting cavity.

The rotary kiln is characterized in that a material guiding cabin is arranged at one high-position end of the rotary kiln rotary drum, and a material guiding inclined plate extending to the inner cavity of the rotary kiln rotary drum is arranged in the material guiding cabin.

The utility model further discloses that the upper end of the guide cabin is communicated with the spiral propeller, the communicating part is positioned at the discharging end of the spiral propeller, and the feeding hopper communicated with the upper feeding end of the spiral propeller is arranged at the upper feeding end of the spiral propeller.

Compared with the prior art, the utility model has the following beneficial effects: the circulating rotation through first material separating plate and second material separating plate can separate the material in the section of thick bamboo rise, roll to avoid too much material to pile up in rotary kiln rotary drum bottom, also improved the heat exchange efficiency and the oxidation roasting efficiency of material simultaneously, and through the cooperation design of two material separating plates for traditional single chamber type structure can increase the unit filling volume of material as much as possible, and then improve its production efficiency.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the internal structure of the present utility model in elevation;

FIG. 2 is a schematic view of the outer end of the rotary kiln drum according to the present utility model;

FIG. 3 is a schematic diagram of the cross-sectional structure of a rotary kiln drum according to the present utility model;

FIG. 4 is a schematic view in partial cross-section of the present utility model;

in the figure: 1. a rotary kiln drum; 11. a first material separation plate; 12. a second material separating plate; 13. an arc pocket; 14. a second firing chamber; 15. a first firing chamber; 16. a buffer gap; 17. a material leakage through hole; 18. a buffer plate; 2. a guide cabin; 3. a screw propeller; 31. and (5) a feeding hopper.

Detailed Description

The technical scheme of the present utility model is further described in non-limiting detail below with reference to the preferred embodiments and the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present utility model provides the following technical solutions: the utility model provides a metallurgical rotary kiln, including rotary kiln rotary drum 1, rotary kiln rotary drum 1 inside is fixed to be provided with two first separating plate 11 and the second separating plate 12 that oppose each other, first separating plate 11 and second separating plate 12 divide rotary kiln rotary drum 1 into two equal cabin sections of volume, respectively for first calcination chamber 15 and second calcination chamber 14, the near-end reservation of first separating plate 11 and second separating plate 12 has buffer gap 16, and first calcination chamber 15 communicates each other through between buffer gap 16 and the second calcination chamber 14, wherein, rotary kiln rotary drum 1 is inside not limited to setting up first separating plate 11 and second separating plate 12, also can be set up to two separating plates, or three separating plates, and a plurality of separating plates are along rotary kiln rotary drum 1 inboard annular array, simultaneously, rotary kiln rotary drum 1 is driven its rotation by the annular traction wheel that sets up at the rotary drum outer wall, the traction wheel is usually motor drive.

The arc pocket 13 is formed in one side of the first material separating plate 11 and the second material separating plate 12, corresponding to the first roasting cavity 15 and the second roasting cavity 14, wherein extension lines of the two arc pocket 13 are converged at an axle center point of the rotary kiln rotary drum 1, meanwhile, the junction of the root parts of the first material separating plate 11 and the second material separating plate 12 and the inner wall of the rotary kiln rotary drum 1 is of an arc top chamfer structure, the arc top chamfer can prevent materials from being embedded in an included angle, the arc pocket 13 can stop materials for a long time as much as possible when the first material separating plate 11 and the second material separating plate 12 are overturned and lifted, for example, when the first material separating plate 11 is lifted and approaches to the highest position, the arc pocket 13 can prevent the materials in the first roasting cavity 15 from quickly sliding into the buffer gap 16 and falling into the second roasting cavity 14, so as to avoid the materials to be circularly accumulated in the overturning process and influence the heat exchange efficiency, and a small amount of materials can be circularly mixed in the two roasting cavities through the buffer gap 16, so that the quality uniformity of the materials is improved;

the first material separating plate 11 and the second material separating plate 12 are provided with material leakage through holes 17, meanwhile, the material leakage through holes 17 are uniformly distributed along the length direction of the first material separating plate 11 and the second material separating plate 12, the first roasting cavity 15 is communicated with the second roasting cavity 14 through the material leakage through holes 17, when the rotary kiln rotary drum 1 rotates clockwise, as shown in figure 3, about half of materials in the drum can be lifted and rolled separately through the circular rotation of the first material separating plate 11 and the second material separating plate 12, so as to avoid excessive materials from accumulating at the bottom of the rotary kiln rotary drum 1, improve the heat exchange efficiency and the oxidation roasting efficiency of the materials, and increase the unit charge filling of the materials as much as possible through the matching design of the two material separating plates relative to the traditional single-cavity structure, further improve the production efficiency,

further, the material leakage through holes 17 can increase the flow rate and the mixing rate of the materials in the first roasting cavity 15 and the second roasting cavity 14 in the overturning process of the first material separation plate 11 and the second material separation plate 12, so that the temperature field is more uniform, and the aperture of the material leakage through holes 17 is not limited in the utility model, and the material leakage through holes can be in middle-small aperture mixed fit, or all middle-small aperture, or all small aperture;

the inner wall of the cylinder body of the rotary kiln rotary cylinder 1 and the outer sides of the inner walls of the first roasting cavity 15 and the second roasting cavity 14 are provided with evenly distributed buffer plates 18, the length direction of the buffer plates 18 is consistent with the length direction of the rotary kiln rotary cylinder 1, the buffer plates 18 are evenly distributed along the length direction of the first roasting cavity 15 and the second roasting cavity 14, and the wall-hanging distribution field of materials in each cavity can be improved when the first roasting cavity 15 and the second roasting cavity 14 are overturned through the evenly distributed buffer plates 18, so that the oxidation transfer efficiency and the roasting efficiency of the materials in each cavity are improved;

the high-order one end of rotary kiln rotary drum 1 is provided with guide cabin 2, still be provided with the guide swash plate that extends to rotary kiln rotary drum 1 inner chamber in this guide cabin 2 simultaneously, the upper end intercommunication of guide cabin 2 has screw propeller 3, and the intercommunication position is located the discharge end of screw propeller 3, screw propeller 3's upper portion feed end is provided with rather than the feeder hopper 31 of intercommunication, when the material is being carried, screw propeller 3 can be with the even propelling movement of the material that gets into by feeder hopper 31 in guide cabin 2, and through the guide swash plate shared to first calcination chamber 15 and second calcination chamber 14, make the material distribute more even, and improve its heat transfer effect.

In summary, when the rotary kiln drum 1 rotates clockwise, as shown in fig. 3, about half of the materials in the drum can be lifted and rolled separately through the circulating rotation of the first material separating plate 11 and the second material separating plate 12, so as to avoid the accumulation of excessive materials at the bottom of the rotary kiln drum 1, and meanwhile, the heat exchange efficiency and the oxidizing roasting efficiency of the materials are improved, and the unit filling quantity of the materials can be increased as much as possible through the matching design of the two material separating plates relative to the traditional single-cavity structure, so that the production efficiency of the rotary kiln is improved.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Finally, it should be pointed out that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (6)

1. A rotary kiln for smelting metal, which is characterized in that: including rotary kiln rotary drum (1), rotary kiln rotary drum (1) inside is fixed to be provided with two first material separating boards (11) and second material separating boards (12) that oppose each other, first material separating boards (11) and second material separating boards (12) divide rotary kiln rotary drum (1) into two cabin sections, are first calcination chamber (15) and second calcination chamber (14) respectively, buffer gap (16) are reserved to the near-end of first material separating boards (11) and second material separating boards (12) to communicate each other between first calcination chamber (15) through buffer gap (16) and second calcination chamber (14).

2. A rotary metallurgical kiln according to claim 1, wherein: one side of first material separating plate (11) and second material separating plate (12) corresponding respectively to first roasting cavity (15) and second roasting cavity (14) is provided with arc pocket groove (13), wherein, the extension line of two arc pocket grooves (13) merges in the axle center point of rotary kiln rotary drum (1), simultaneously, the root of first material separating plate (11) and second material separating plate (12) and the inner wall juncture of rotary kiln rotary drum (1) are arc top chamfer structure.

3. A rotary metallurgical kiln according to claim 2, wherein: the plate bodies of the first material separating plate (11) and the second material separating plate (12) are provided with material leakage through holes (17), meanwhile, the material leakage through holes (17) are uniformly distributed along the length direction of the first material separating plate (11) and the length direction of the second material separating plate (12), and the first roasting cavity (15) is communicated with the second roasting cavity (14) through the material leakage through holes (17).

4. A rotary metallurgical kiln according to claim 1, wherein: the inner wall of the cylinder body of the rotary kiln rotary cylinder (1) and the outer side of the inner wall of the first roasting cavity (15) and the outer side of the inner wall of the second roasting cavity (14) are provided with buffer plates (18) which are uniformly distributed, the length direction of the buffer plates (18) is consistent with the length direction of the rotary kiln rotary cylinder (1), and the buffer plates (18) are uniformly distributed along the length direction of the first roasting cavity (15) and the length direction of the second roasting cavity (14).

5. A rotary metallurgical kiln according to claim 1, wherein: the rotary kiln rotary drum (1) is characterized in that a material guiding cabin (2) is arranged at one high-position end of the rotary kiln rotary drum (1), and a material guiding inclined plate extending to the inner cavity of the rotary kiln rotary drum (1) is also arranged in the material guiding cabin (2).

6. A rotary metallurgical kiln according to claim 5, wherein: the upper end of the guide cabin (2) is communicated with a spiral propeller (3), the communicating part is positioned at the discharge end of the spiral propeller (3), and the upper feeding end of the spiral propeller (3) is provided with a feeding hopper (31) communicated with the spiral propeller.

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