TWI396751B - Sinter machine pallet and system thereof - Google Patents

Description

Sintering trolley and sintering trolley system

This invention relates to a sintering trolley and system therefor, and more particularly to a sintering trolley and system therefor comprising a support frame for supporting a sintered cake.

In the process of iron ore sintering, the sinter layer can be divided into a burnt ore zone, a combustion melting zone, a dry pre-tropic zone, a moisture condensation zone and an original sinter zone from top to bottom, wherein the second layer is melted by combustion. Since the liquid phase is formed, the gas permeability resistance of the combustion melting zone of the second layer is the largest. In addition, in order to provide sufficient oxygen during the sintering process, it is necessary to use a pumping device to generate a gas stream from the top to the bottom and through the frit layer.

Because in the combustion melting zone, the sintering temperature is the highest and the liquid phase is formed, and the gravity of the upper firing zone is affected, the air permeability of the lower layer is seriously affected. As the sintering process progresses, the combustion melting zone continuously moves downward, and the air permeability of the lower material layer deteriorates, resulting in incomplete combustion of the fuel (sintering material), slow sintering speed, low yield, and energy consumption.

In the prior art, a solid plate substantially trapezoidal or square is placed on the bottom plate of the sintering trolley in an upright manner. When the burnt ore zone in the sinter layer is formed, a small amount of the top of the trapezoidal or square solid plate can be used to support the burnt ore zone, thereby reducing the pressure caused by the burnt ore zone on the lower layer, thereby avoiding the underlying material. The deterioration of the layer ventilation.

However, the trapezoidal or square solid plate bracket of the prior art still has the following disadvantages. First, the contact area between the top end of the stent and the fired sintered cake is small. Therefore, in actual use, it is difficult to fully support the upper sintered cake, and the sintered cake cannot be stably supported. Second, whether it is a trapezoidal or square solid plate bracket, it occupies a considerable amount of space in the layer, that is, reduces the amount of sintering material that can be filled in the sintering trolley. Third, since trapezoidal or square solid supports are solid, when they are placed in the material layer, the material layer areas will be separated. This design easily affects the airflow distribution in the material layer, which causes uneven sintering and affects the sintered ore. quality.

Accordingly, it is an object of the present invention to provide a sintering trolley and a system thereof, wherein the sintering trolley has a support frame formed of a cylinder, and the plurality of support frames form a polygon on a horizontal surface, thereby integrally and stably supporting the upper portion of the sintering The cake improves the sintering material that can be filled in the sintering trolley and reduces the influence on the gas distribution in the layer to improve the quality of the sintered ore.

According to an embodiment of the invention, a sintering trolley is provided. The sintering trolley includes a flat body, a bottom plate disposed above the plane, a first side wall, a second side wall, and a first support frame. The plane of the body has a plurality of sides connected in sequence, and the bottom plate has a plurality of through holes. The first and second side walls are respectively disposed adjacent to two sides of the plane of the main body. In addition, the first support frame is engaged on the bottom plate such that the bottom plate is interposed between the first support frame and the plane of the main body, wherein the first support frame comprises at least three first columns and at least three second columns. Each of the first cylinders has first and second ends, and each of the first column systems is substantially perpendicularly joined to the bottom plate at a first end, and the two ends of each of the second columns are connected to the first A second end of the two of the cylinders, and the second cylinders are arranged to substantially form the first polygon.

According to another embodiment of the present invention, a sintering trolley system is provided. Each of the sintering trolleys includes a planar body, a bottom plate disposed above the plane, a first side wall, a second side wall, and a first support frame. The body has first to fourth sides that are sequentially connected. The bottom plate has a plurality of through holes. The first and second sidewalls are respectively disposed adjacent to the first and third sides of the plane of the body. In addition, the first support frame is engaged on the bottom plate such that the bottom plate is interposed between the first support frame and the plane of the main body, wherein the first support frame comprises at least three first columns and at least three second columns. Each of the first cylinders has first and second ends, and each of the first column systems is substantially perpendicularly joined to the bottom plate at a first end, and the two ends of each of the second columns are connected to the first A second end of the two of the cylinders, and the second cylinders are arranged to substantially form the first polygon. Each of the above sintering carriages is adjacent to both of the remaining sintering carriages with the second and fourth sides of the body.

The invention has the advantages that the support frame formed by the cylinder is arranged in the material layer to support the upper sintered cake during the sintering process, thereby reducing the shrinkage of the material layer caused by gravity and air suction. And to reduce the impact on the combustion melting zone, thereby improving the aeration of the entire sinter layer. Therefore, the fuel can be fully burned and the sintering speed can be increased, which not only improves the sintering productivity, but also further reduces the energy consumption and improves the energy use efficiency.

1A to 1D, wherein FIG. 1A is a schematic plan view showing a main body and a side wall of a sintering trolley according to an embodiment of the present invention, and FIG. 1B is a first support frame of the sintering trolley of the above embodiment. FIG. 1C is a top plan view showing the sintering trolley in the above embodiment, and FIG. 1D is a schematic side view showing the sintering trolley viewed along line 1D-1D in FIG. 1C. The sintering cart 100 includes a main body 102, a bottom plate 104, a first side wall 106, a second side wall 108, and a first support frame 200.

In the present embodiment, as shown in Fig. 1A, the body 102 has a plane 102a in which the plane 102a is substantially rectangular. In addition, the plane 102a further has a first side 102b, a second side 102c, a third side 102d, and a fourth side 102e which are sequentially connected and formed. The main body 102 is mainly made of metal, and provides the support required for the sintering material carried by the sintering carriage 100 by the strength of the metal material. In other embodiments, the plane 102a may be other geometric shapes, and is not limited to the rectangle of the embodiment.

In the present embodiment, as shown in FIGS. 1C and 1D, the bottom plate 104 is disposed above the plane 102a of the main body 102. The bottom plate 104 has a plurality of through vents 104a. When the bottom plate 104 is used in a sintering process, the through vents 104a allow airflow generated by an air extraction device (not shown) to pass through the bottom plate 104. In the present embodiment, as shown in FIG. 1D, since the bottom surface of the bottom plate 104 has the convex bumps 104b, there is a gap space 104c between the bottom surface of the bottom plate 104 and the plane 102a of the main body 102. The gap space 104c is mainly used as a flow conduit for the airflow generated by the air suction device, so that the sintering material can obtain sufficient oxygen during the sintering process, thereby reducing the incomplete combustion of the sintering material. However, the structure of the bottom surface of the bottom plate 104 is not limited to the embodiment, and those skilled in the art can easily change or modify them according to the design requirements. In other embodiments, for example, the protrusions 104b protruding from the bottom surface of the bottom plate 104 can be eliminated, and a plurality of through holes (not shown) are disposed on the main body 102 at positions corresponding to the through holes 104a of the bottom plate 104, and the same can be Provides the flow piping required for the airflow generated by the extraction equipment. Based on the above description relating to the 1C and 1D drawings and the structure shown therein, those skilled in the art can easily know the structure and application of the plurality of through holes provided in the main body 102 as described above, and thus are not directed to this embodiment. Provide relevant schemas.

In the present embodiment, as shown in FIG. 1C, a sintering trolley 100 includes three bottom plates 104. However, the number of the bottom plates 104 included in each of the sintering carts 100 is not limited to this embodiment, and the number of the bottom plates 104 may vary depending on design requirements. Further, in the present embodiment, the geometry of the through-hole vent 104a of the bottom plate 104 is elongated. However, in other embodiments, the geometry of the through vent 104a can be any geometric shape (eg, circular, triangular, quadrilateral, or other polygonal, etc.).

As shown in FIGS. 1A, 1C, and 1D, in the present embodiment, the first side wall 106 and the second side wall 108 are disposed on the plane 102a of the main body 102, and the first side wall 106 is adjacent to the first side 102b. The second side wall 108 is adjacent to the third side 102d. The first side wall 106 and the second side wall 108 are mainly functional in forming a space required for accommodating the sintering material. Further, since the sintering trolley system (not shown) in the continuous sintering process is connected in series by a plurality of sintering trolleys, the above-described sintering trolley system is formed. Therefore, in order to apply the sintering carriage 100 to the continuous sintering process, the first side wall 106 and the second side wall 108 are disposed only along the first side 102b and the third side 102d of the sintering cart 100. Furthermore, in the above-described sintering trolley system including the plurality of sintering carriages 100, each of the sintering carriages 100 has two of the second side 102c and the fourth side 102e of the main body 102 and two other sintering trolleys 100. Adjacent.

In other embodiments, when the plane 102a of the main body 102 has other geometric shapes, the plane 102a has a plurality of sides, and the first side wall 106 is adjacent to one of the plurality of sides, and the second side wall 108 Then adjacent to the other side of the other side.

Referring to FIGS. 1B to 1D, the first support frame 200 is coupled to the bottom plate 104, that is, the bottom plate 104 is interposed between the first support frame 200 and the plane 102a of the main body 102. The first support frame 200 includes three first cylinders 202 and three second cylinders 204, wherein each of the first cylinders 202 has a first end 202a and a second end 202b (please refer to FIG. 1B), and each The first cylinder 202 is substantially perpendicularly joined to the bottom plate 104 by the first end 202a, and the two ends of each of the second cylinders 204 are bridged to the second end 202b of the first cylinder 202. . Moreover, the second pillars 204 are arranged to substantially form a first polygon, and in this embodiment, more specifically, the three second pillars 204 form a triangle. Furthermore, as shown in FIG. 1D, the height of the first pillar 202 is lower than the height of the first sidewall 106 and the second sidewall 108, that is, when the sintering material is filled to the first sidewall 106 and the second sidewall 108 and the bottom plate. When the space (not shown) formed by 104 is formed, the second column 204 is included in the sintering material.

In this embodiment, the first support frame 200 is designed such that the weight of the fired sintered cake falls on the three second cylinders 204 as shown in FIG. 1C, so the first support frame 200 A more stable support effect can be obtained by a conventional trapezoidal or square solid plate. In addition, since the first support frame 200 is composed of a plurality of small first cylindrical bodies 202 and second cylindrical bodies 204, the first support frame 200 occupies less material in the sintering material than the conventional trapezoidal or square solid plates. With a small volume, the sintering material that can be filled in the sintering trolley is improved. In addition, since the first support frame 200 occupies less volume in the sintering material, the first support frame 200 can reduce the influence of the air distribution in the material layer compared to the conventional trapezoidal or square solid plate.

According to the above, in order to provide a more stable support effect of the sintered cake, the first support frame 200 needs to include at least three first cylinders and at least three second cylinders. Referring to Figures 2 to 4, in these embodiments, the sintering cart 100a to the sintering cart 100c are similar to the sintering cart 100 shown in Fig. 1C, so the following only explains the difference, and the same part is not repeated. . In Figures 2 through 4, the sintering cart 100a to the sintering cart 100c each include only one larger bottom plate 104', and the sintering cart 100 includes three smaller bottom plates 104. In addition, in FIG. 2, the first support frame 200a includes four first columns 202 and four second columns 204', that is, the second columns 204' are arranged to substantially form the first quadrilateral. Edge shape. In FIG. 3, the first support frame 200b includes five first cylinders 202 and five second cylinders 204', that is, the second cylinders 204' are arranged to substantially form the first plurality of pentagons. Edge shape. In FIG. 4, the first support frame 200c includes six first cylinders 202 and six second cylinders 204', that is, the second cylinders 204' are arranged to form substantially the first of the hexagons. Edge shape.

Referring to Fig. 5, in this embodiment, the sintering carriage 100d is similar to the sintering carriage 100 shown in Fig. 1C. Therefore, only the difference will be described below, and the same portions will not be repeated. In Fig. 5, the sintering carriage 100d includes only one larger bottom plate 104', and the sintering trolley 100 includes three smaller bottom plates 104. In addition, the sintering carriage 100d includes a first support frame 200d and a second support frame 200e, wherein the first support frame 200d is similar to the first support frame 200 and includes three first columns 202 and three second columns 204' The difference is that the size of the second cylinder 204' of the first support frame 200d is smaller than the size of the second cylinder 204 of the first support frame 200. In this embodiment, the first support frame 200d is substantially identical to the second support frame 200e, that is, the second support frame 200e is still composed of three first columns 202 and three second columns 204'. The only difference is that it is set in a different direction.

In a specific embodiment, the second support frame 200e is not limited to the structure shown in FIG. 5, and may have other structures as shown in FIGS. 2 to 4.

In a particular embodiment, the first cylinders 202 of the first support brackets 200 through 200d do not cover each of the through vents 104a on the bottom plate 104 or the bottom plate 104'. The main purpose of using this design is to maintain the fluency of the gas stream generated by the pumping device in the sintering material, avoid clogging, and thereby increase the rate of sintering (productivity).

Please refer to Table 1 below. In Table 1, the sintering time, the flame burning speed, the shrinkage amount of the sintered layer, and the productivity of the triangular first support frame 200, the unused support frame, and the conventional trapezoidal solid plate as shown in Fig. 1B were recorded. In the test for obtaining the data of Table 1, in order to verify the influence of the support frame of the present invention on the productivity, the remaining sintering conditions were consistent except for the cause of the support frame.

In Table 1, "sintering time" is expressed in minutes (min), which is defined as the time required for the sinter layer to completely transform into a burnt ore. The "flame burning rate" is expressed in millimeters per minute (mm/min), which is defined as the height of the sintered layer divided by the "sintering time" described above. The "shrinkage amount of the sinter layer" is expressed in millimeters, which is defined as the height of the sinter layer minus the height after the sinter layer is completely converted into a burnt ore. "Productivity" is expressed in tons per day. (ton/day.m ² ), which is defined as the number of tons of burnt ore that can be produced per square meter per day.

According to the above Table 1, the productivity of the first support frame 200 of the present invention is increased by 7.72% compared with the conventional trapezoidal solid plate, wherein the productivity increase amount is calculated as (the first support frame 200 productivity - trapezoidal trapezoid Solid board productivity) / first support frame 200 productivity [(34.9-32.4) / 32.4].

In addition, it is emphasized that, in order to simplify the description and the clarity, in the drawings corresponding to the above embodiments, the detailed structure of the sintering trolley is not fully disclosed, and only the support frame related to the present invention is disclosed. structure. However, those skilled in the art, after referring to the description, can easily apply the support frame of the present invention to various types of sintering trolleys.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100. . . Sintering trolley

100a. . . Sintering trolley

100b. . . Sintering trolley

100c. . . Sintering trolley

100d. . . Sintering trolley

102. . . main body

102a. . . flat

102b. . . First side

102c. . . Second side

102d. . . Third side

102e. . . Fourth side

104. . . Bottom plate

104’. . . Bottom plate

104a. . . Through the vent

104b. . . Bump

104c. . . Clearance space

106. . . First side wall

108. . . Second side wall

200. . . First support frame

200a. . . First support frame

200b. . . First support frame

200c. . . First support frame

200d. . . First support frame

200e. . . Second support frame

202. . . First cylinder

202a. . . First end

202b. . . Second end

204. . . Second cylinder

204’. . . Second cylinder

1D-1D. . . line

For a better understanding of the present invention, reference is made to the above detailed description and the accompanying drawings. It is emphasized that, in accordance with the standard of the industry, the various features in the drawings are not to scale. In fact, the dimensions of the various features may be arbitrarily enlarged or reduced in order to clearly illustrate the above embodiments. The relevant schema description is as follows.

1A is a top plan view showing a main body and a side wall of a sintering trolley according to an embodiment of the present invention.

FIG. 1B is a schematic perspective view showing the first support frame of the sintering trolley.

Fig. 1C is a schematic plan view showing the sintering trolley.

Fig. 1D is a schematic side elevational view of the sintering trolley as viewed along line 1D-1D of Fig. 1C.

2 to 5 are schematic plan views showing a sintering trolley according to another embodiment of the present invention.

100. . . Sintering trolley

104. . . Bottom plate

104a. . . Through the vent

106. . . First side wall

108. . . Second side wall

200. . . First support frame

204. . . Second cylinder

202. . . First cylinder

1D-1D. . . line

Claims (10)

A sintering trolley comprising: a body having a plane, wherein the plane has a plurality of sides connected in sequence; a bottom plate disposed on the plane of the body, wherein the bottom plate has a plurality of through vents; a first side wall adjacent to one of the side edges; a second side wall adjacent to the other of the side edges; and a first support frame coupled to the bottom plate such that the bottom plate is interposed Between the first support frame and the plane of the main body, wherein the first support frame comprises: at least three first cylinders, wherein each of the first cylinders has a first end and a second end, and Each of the first column systems is substantially perpendicularly joined to the bottom plate by the first end; and at least three second columns, wherein the two ends of each of the second columns are connected to the first The second end of the two of the cylinders, and the second cylinders are arranged to substantially form a first polygon. The sintering trolley according to claim 1, wherein the first polygonal shape substantially formed by the second cylinders is selected from the group consisting of a triangle, a quadrangle, a pentagon, and a hexagon. The sintering trolley of claim 1, further comprising a second support frame coupled to the bottom plate such that the bottom plate is interposed between the second support frame and the plane of the main body, wherein the second support frame comprises : at least three third cylinders, wherein each of the third column systems is substantially vertically joined to the bottom plate; and at least three fourth columns, wherein the two ends of each of the fourth columns are connected to the Some of the third cylinders are not joined to the bottom plate, and the fourth cylinders are substantially aligned to form a second polygon. The sintering trolley of claim 3, wherein the first support frame is substantially identical to the second support frame. The sintering trolley of claim 1, wherein each of the first cylinders of the first support frame does not cover each of the through vent holes. A sintering trolley system comprising a plurality of sintering trolleys, wherein each of the sintering trolleys comprises: a body having a plane, wherein the plane has a first side, a second side, and a third a bottom plate and a fourth side; a bottom plate disposed on the plane of the main body, wherein the bottom plate has a plurality of through vent holes; a first side wall adjacent to the first side; a second side wall Adjacent to the third side; and a first support frame coupled to the bottom plate such that the bottom plate is interposed between the first support frame and the plane of the main body, wherein the first support frame comprises: At least three first cylinders, wherein each of the first cylinders has a first end and a second end, and each of the first post systems is substantially perpendicularly joined to the bottom plate by the first end And at least three second cylinders, wherein the two ends of each of the second cylinders are bridged to the second ends of the first cylinders, and the second cylinders are arranged to form substantially a first polygon; wherein each of the sintering trolleys is the first of the body Side and the fourth side both adjacent to the rest of the sintering pallets which these. The sintering trolley system of claim 6, wherein the first plurality of substantially formed by the second cylinders of each of the sintering trolleys are selected from the group consisting of a triangle, a quadrangle, a pentagon, and a hexagon. A group consisting of. The sintering trolley system of claim 6, wherein each of the sintering trolleys further comprises a second support frame coupled to the bottom plate such that the bottom plate is interposed between the second support frame and the plane of the main body Wherein the second support frame comprises: at least three third cylinders, wherein each of the third column systems is substantially vertically joined to the bottom plate; and at least three fourth columns, wherein each of the fourth columns The two ends of the body are connected to one of the third cylinders, wherein the two cylinders are not joined to the bottom plate, and the fourth cylinders substantially form a second polygon. The sintering trolley system of claim 8, wherein the first support frame of each of the sintering trolleys is substantially identical to the second support frame. The sintering trolley system of claim 6, wherein each of the first cylinders of the first support frame of each of the sintering trolleys does not cover each of the through vents.