TWI617378B - Metal particle granulator - Google Patents

Abstract

A metal particle granulator comprising a mold wheel, a cooling baffle, a hopper, and a granulation mechanism, the mold wheel being controllably rotatable and comprising a plurality of spaced apart forming dies, each forming dies Defining a mold space having an inner opening and an outer opening, the cooling baffle is attached to the mold wheel, and when the wheel body rotates, the inner opening of a part of the forming tool of the molding die is closed corresponding to the direction of rotation thereof, a hopper for accommodating the raw material and controllably injecting a raw material from an outer opening of the one of the forming dies, the sizing mechanism being disposed away from the feeding member against the feeding wheel, and when the wheel body is rotated The substance contained in the mold space is controlled to be discharged from the mold space by the inner opening of one of the molding dies.

Description

Metal particle granulator

The present invention relates to a mechanism for making granules, and more particularly to a metal granule making machine having a metal particle size ranging from 6 mm to 15 mm.

Metal particles, such as aluminum particles having a diameter of about 6 mm to 14 mm and a height of about 10 mm to 15 mm, are one of the indispensable basic materials in the steel making process. Therefore, how to produce in a simple and low-cost manner is a refining process. An important part of the steel industry.

In a general steel mill, metal particles are produced by re-shearing after rolling, and the metal particles thus produced are cylindrical or have a polygonal column shape with large rounded corners, usually formed at one end and cut at the other end. The pointed flat fracture. This kind of making metal particles  The advantage of the method is that the prepared metal particles have uniform appearance and are used for subsequent steel-making problems in the transportation system; however, the disadvantage is that the ductility of the raw materials needs to be considered when performing the rolling, and can only be applied to the purity. High raw material with high ductility, so the use of raw materials is limited and the process cost is high.  

In addition, metal pellets are also commonly used in the casting method and the dropping casting method. Although the former can arbitrarily adjust the composition of the raw material without using high-purity raw materials, this method is generally suitable for producing a minimum size of 30 mm to 50 mm. The above metal ingots are not suitable for the transportation system of the steelmaking plant; the metal particles produced by the latter are flat-shaped particles with a diameter of about 3mm-8mm and a thickness of about 3mm-6mm, which are easy to be stuck in the conveying system due to the appearance. Living, the same applies to the conveyor system of the steel mill.

In addition, there is a method in which the raw material is crushed into a powder, and then the powdery raw material is recombined through a sieve to be extruded into strip-shaped particles, and the powdery raw material is injected into a cavity to apply a high-pressure ingot, but the former It is suitable for the production of feed, raw fuel, etc., and can not be used to make metal particles. Although the latter can be applied to some metal materials with good ductility, the metal particles produced in this way have poor impact resistance and will break the powder during transportation. It is not suitable for the transportation system of large steel mills. In addition, when the metal raw materials are broken into powders, a great degree of oxidation reaction occurs, and the metal particles produced by the raw materials are not used for the deoxidation and temperature generation during steel making. Required.

Accordingly, it is an object of the present invention to provide a metal pellet manufacturing machine which can be used for steel making by stably and rapidly producing metal particles having a size ranging from 6 mm to 15 mm.

Thus, a metal particle granulator of the present invention comprises a mold wheel, a cooling baffle, a hopper, and a granulation mechanism.

The mold wheel includes a controllable wheel body, a plurality of forming dies disposed along the outer circumference of the wheel body and spaced apart from each other on the wheel body, each forming die defining a body having a body toward the center of the wheel body An inner opening and a mold space opposite the outer opening of the inner opening.

The cooling baffle is attached to the mold wheel, and when the wheel body rotates, the inner opening of a part of the forming tool of the molding die is closed corresponding to the rotating direction of the wheel body.

The storage tank is configured to receive the raw material and includes at least one feeding nozzle, the at least one feeding nozzle is controlled to be controlled from an outer opening of at least one of the molding molds of the molding die when the wheel body rotates The raw material is injected into the mold space of the at least one molding die.

The sizing mechanism is disposed away from the mold wheel away from the feed member, and when the wheel body rotates, the granulation mechanism is controlled to be received from an inner opening of at least one of the molding dies of the molding dies The substance in the mold space of the at least one forming die is discharged from the mold space by the outer opening.

The utility model has the advantages that: as the mold wheel continues to rotate, the molten metal raw material is injected into the mold space from the feeding nozzle, and the granule discharging mechanism discharges the metal particles accommodated in the mold space, thereby continuously producing the size, Uniform shape, suitable for metal particles made of steel.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figure 1, a first embodiment of the metal particle granulator of the present invention is used for making metal particles, particularly for aluminum particles which are deoxidized and heated, for example, in a steel making process, the metal particle granulator comprising a mold wheel 2 a cooling baffle 3 attached to the mold wheel 2, a cooling water pipe 4 disposed along the cooling baffle 3, a storage tank 5 disposed above the mold wheel 2, and a storage tank away from the storage tank 5 and abutting against the granulation mechanism 6 provided by the mold wheel 2.

The mold wheel 2 includes a wheel body 21 that is disk-shaped and controllably rotatable, and a plurality of molding dies 22 disposed on the wheel body 21 along the outer circumference of the wheel body 21 and spaced apart from each other, each molding die 22 defines a molding space 223 having an inner opening 221 facing the center of the wheel body 21 and an outer opening 222 opposite to the inner opening 221. Preferably, the molding space 223 is formed from the inner opening 221 to the outer opening. The 222 has a truncated cone shape with a gradually increasing diameter.

The cooling baffle 3 is formed in an arc shape with a central angle of not less than 90°, and is disposed against the wheel body 21 with respect to the wheel body 21, and when the wheel body 21 rotates, the cooling baffle 3 corresponds to The wheel body 21 rotates in a direction to close the inner opening 221 of a portion of the molding die 22 of the molding die 22. When the molten metal material is injected into the molding space 223 of the molding die 22 in which the inner opening 221 is closed by the cooling baffle 3, the molten metal material is heat-exchanged with the cooling baffle 3 to gradually solidify into a row corresponding to Metal particles of the mold space 223.

The cooling water pipe 4 is disposed against the cooling baffle 3, and the cooling water flows from one end and flows out from the other opposite end, and can be accelerated to perform heat exchange with the cooling baffle 3.

The hopper 5 is for containing a raw material, such as a molten metal, an alloy, and includes at least one feeding nozzle 51 adjacent to an outer opening 222 of at least one of the forming dies 22 of the forming dies 22, as the wheel body When the 21 is rotated, the at least one feeding nozzle 51 is controlled to inject the raw material into the molding space 223 of the at least one molding die 22 from the outer opening 222 of at least one of the molding dies 22 of the molding dies 51, in this example In the figure, a feed nozzle 51 is used for explanation.

The sizing mechanism 6 includes a disc-shaped body 61 that is controllably rotatable, and a plurality of push rods 62 projecting outwardly from the disc-shaped body 61. The disc-shaped body 61 corresponds to the wheel body 21 of the mold wheel 2. The rotation direction is reversely rotated, and at least one of the driving rods 62 is driven into the mold space 223 from at least one of the inner openings 221 of the molding dies 22 of the molding dies 22 to be accommodated in the mold. The material of the space 223 is discharged from the mold space 223 by the outer opening 222. In this example and the illustration, three of the push rods 62 correspond to the inner openings 221 of three of the molding dies 22. The three mold spaces 223 are placed for illustration.

In the first embodiment of the metal particle granulator of the present invention, when the metal particles are produced, the wheel body 21 of the mold wheel 2 is controlled to continuously rotate at a predetermined rate, and the molten metal material stored in the storage tank 5 is subjected to The feeding nozzles 51 are sequentially poured into the molding space 223 of the molding die 22; the molten metal raw material injected into the molding space 223 is then solidified into metal particles by being taken away from the cooling baffle 3; When the wheel body 21 of the mold wheel 2 is rotated to receive the molding die 22 that has solidified into metal particles adjacent to the sizing mechanism 6, the disk-shaped body 61 of the sizing mechanism 6 is rotated opposite to the wheel body 21 The metal particles that drive the at least one of the push rods 62 to be received in the mold space 223 are discharged from the mold space 223 by the outer opening 222; as the mold wheel 2 continues to rotate, the feed nozzle 51 sequentially injects the metal material. And the continuous rotation of the granulation mechanism 6 discharges the shaped metal particles in the mold space 223 from the mold space 223, and the metal particles can be continuously produced continuously.

When the metal particles are produced in the first embodiment of the above-described metal pellet granulator of the present invention, since the molten metal raw material is controlled to be injected into the molding space 223 of the molding die 22 and cooled, the molding space 223 can be simply changed. The production of the predetermined appearance of the metal particles, and the production of the metal particles uniform appearance, no sharp edges, smooth surface, suitable for the transportation system of the steelmaking process, in addition, the first of the metal pelletizer EXAMPLES The process for producing metal particles is not particularly limited, so that the molten metal raw materials can be adjusted and adjusted according to requirements, thereby producing metal particles having a predetermined desired composition, particularly low-melting metals and alloys, for example, for steelmaking processes. The aluminum pellet heated in the deoxidation is applied to the first embodiment of the metal pellet granulator of the present invention in combination with molten aluminum of high purity (purity of not less than 95%).

Referring to Figure 2, a second embodiment of the metal particle granulator of the present invention is similar to the first embodiment, except that the granulation mechanism 7 is unique. The granulation mechanism 7 of the second embodiment includes a pump 71 for generating high-pressure gas, and at least one gas nozzle 72 disposed at the mold wheel that connects the pump 71 and is away from the feed nozzle 51. When the wheel body 21 rotates, the gas nozzle 72 is controlled to inject high-pressure gas into the mold space 223 from the inner opening 221 of at least one of the molding dies 22 of the molding dies 22, and the mold is injected by injecting high-pressure gas. Metal particles solidified in the space 223 are discharged from the outer opening 222 from the mold space 223.

In summary, the metal particle granulator of the present invention mainly injects molten metal raw material into the molding die 22 by the continuous rotating mold wheel 2, and the feeding nozzle 51 of the storage tank 5, and the molten metal raw material is injected. When the mold 22 is formed, the heat is exchanged with the cooling baffle 3 to solidify into metal particles, and the metal particles solidified in the molding die 22 are rotated by the mold wheel 2, and are discharged by the granulation mechanism 7 to discharge the molding die 22, and can be continued. The metal particles are produced repeatedly. The metal particle granulator of the invention has the advantages of simple structure, stability and reliability, and can produce metal particles of predetermined composition and predetermined shape without limitation, and is particularly suitable for the steelmaking process, so that the object of the invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the simple equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still Within the scope of the invention patent.

2‧‧‧Mold wheel

6‧‧‧ granulation mechanism

21‧‧‧ Wheel body

61‧‧‧Disc body

22‧‧‧Molding mould

62‧‧‧Pushing rod

Opening in 221‧‧

7‧‧‧ granulation mechanism

222‧‧‧Outside

71‧‧‧

223‧‧‧Mold space

72‧‧‧ gas nozzle

3‧‧‧Cooling baffle

4‧‧‧Cooling water pipes

5‧‧‧ Storage trough

51‧‧‧Feeding nozzle

Other features and advantages of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a schematic view of a first embodiment of a metal particle granulator of the present invention; and Figure 2 is a A schematic view of a second embodiment of a metal particle granulator.

Claims (5)

A metal particle granulator comprising: a mold wheel comprising a controllable wheel body, a plurality of forming dies disposed on the wheel body along the periphery of the wheel body and spaced apart from each other, each forming die Defining a mold space having an inner opening facing the center of the wheel body and an outer opening opposite to the inner opening; a cooling baffle attached to the mold wheel, and corresponding to the wheel body when the wheel body is rotated The rotation direction closes an inner opening of a part of the molding die of the molding die; a storage groove for receiving the raw material and including at least one feeding nozzle, the at least one feeding nozzle is turned when the wheel body rotates Controllingly injecting material from the outer opening of at least one of the forming molds into the mold space of the at least one forming mold; and a sizing mechanism remote from the sump and disposed against the mold wheel, and When the wheel body rotates, the granulation mechanism is controlled to be received in the at least one molding die from an inner opening of at least one of the molding dies of the molding dies Mold space substance from the discharge opening of the outer space from the mold. The metal pellet granulator of claim 1 further comprising a cooling water pipe disposed along the cooling baffle. The metal particle granulator according to claim 1, wherein the mold space has a frustoconical shape in which a diameter increases from the inner opening toward the outer opening. The metal particle granulator according to claim 1, wherein the granulation mechanism comprises a disc-shaped body that can be controlled to rotate, and a plurality of push rods protruding outward from the disc-shaped body. When the wheel body rotates, the disc-shaped body rotates in the opposite direction to the rotation direction of the wheel body, and At least one of the at least one molding die that drives the push rods protrudes into the mold space, and the substance accommodated in the mold space is discharged from the mold space by the outer opening . The metal particle granulator according to claim 1, wherein the granulation mechanism comprises a pump for generating a high pressure gas, and at least one gas nozzle connecting the pump, when the wheel body rotates, A gas nozzle is controlled to inject high pressure gas into the mold space from an inner opening of at least one of the molding dies of the molding dies.