KR-20260062747-A - Inversion facility for cathode material manufacturing process

KR20260062747AKR 20260062747 AKR20260062747 AKR 20260062747AKR-20260062747-A

Abstract

The present invention provides an inversion facility for an anode material manufacturing process that inverts a firing vessel containing a material that has undergone a firing process for the manufacture of an anode material. The inversion facility comprises: a main body portion having an inner space formed and a pair of rotation holes formed on both sides; an inversion portion disposed in the inner space of the main body portion, on which the firing vessel is positioned, and having a pair of rotation shafts formed on both sides that are rotatably supported by the pair of rotation holes; a driving portion disposed on the outer side of the main body portion and rotating one of the pair of rotation shafts; a rotation guide portion having a bearing installed in each of the pair of rotation holes and guiding the rotation of each of the pair of rotation shafts; and a pressure air supply portion that supplies pressure air forming a pressure set inside the rotation guide portion where the bearing is disposed.

Inventors

배한봉
김광재

Assignees

(주)포스코퓨처엠

Dates

Publication Date: 20260507
Application Date: 20241029

Claims (8)

In an inversion facility for a cathode material manufacturing process that inverts a firing vessel containing a material that has undergone a firing process for the manufacture of a cathode material, The above-mentioned inversion equipment is, A main body part having an inner space formed and a pair of rotation holes formed on both sides, and An inversion part disposed in the inner space of the main body part, wherein the firing container is located therein, and wherein a pair of rotation axes are formed on both sides that are rotatably supported in the pair of rotation holes, and A driving unit disposed on the outer side of the main body and rotating one of the pair of rotation axes, and A rotation guide member having a bearing installed in each of the above pair of rotation holes and guiding the rotation of each of the above pair of rotation axes, and Characterized by including a pressure air supply unit that supplies pressure air forming a pressure set into the interior of the rotational guide portion in which the bearing is disposed. Inversion equipment for cathode material manufacturing process.
In Article 1, The above pressure air supply unit is, Characterized by including an air injection ring installed in the rotation guide portion to allow the rotation shaft to pass through and to inject the pressure air. Inversion equipment for cathode material manufacturing process.
In Paragraph 2, The above air injection ring is, Characterized by injecting the above pressure air toward the outer circumference of the above rotational shaft, Inversion equipment for cathode material manufacturing process.
In Paragraph 3, The above air injection ring is, Characterized by being provided with one or more such that they are arranged adjacent to each other. Inversion equipment for cathode material manufacturing process.
In Paragraph 2, The above rotation guide is, Includes a bushing member and a bearing housing, The above bearing housing is formed in a hollow shape, A first bearing housing body having one end coupled to the outer circumference of the above-mentioned rotating shaft, and a second bearing housing body having a space formed on its inner circumference that is integrally formed with the side of the first bearing housing body and in which the bearing is provided, and The above bush member is formed in a hollow shape, A first bush body having a hollow shape that is fitted into the inner circumference of the first bearing housing body, and a second bush body that is integrally formed with the side of the first bush body and disposed inside the main body, wherein On the inner circumference of the first bush body mentioned above, Characterized by the formation of an installation groove in which the above-mentioned air injection ring is located. Inversion equipment for cathode material manufacturing process.
In Paragraph 2, The above pressure air supply unit is, A pressure air supply unit that supplies the above pressure air, and The above air injection ring and, An air supply line connected to the pressure air supply unit to supply the pressure air to the air injection ring, and A control valve installed on the above air supply line to control the amount of pressure air supplied from the pressure air supply unit, and Characterized by having a controller that controls the operation of the above-mentioned control valve. Inversion equipment for cathode material manufacturing process.
In Paragraph 6, The above controller includes, A reference pressure value formed in the inner space of the above main body is pre-set, and The above controller is, Characterized by controlling the operation of the pressure air supply device and the control valve so that the pressure value of the pressure air injected through the air injection ring is injected at a pressure value greater than or equal to the reference pressure value. Inversion equipment for cathode material manufacturing process.
In Paragraph 6, The above pressure air supply unit is, Further equipped with a first pressure sensor and a second pressure sensor, The first pressure sensor measures a first pressure value formed in the inner space of the main body, transmits the measured first pressure value to the controller, and The second pressure sensor measures a second pressure value formed in the outer space of the main body and transmits the measured second pressure value to the controller, The above controller is, Characterized by controlling the operation of the pressure air supply device and the control valve in real time so that the measured second pressure value is greater than or equal to the measured first pressure value, thereby supplying the pressure air to the air injection ring.

Description

Inversion facility for cathode material manufacturing process The present invention relates to an inversion facility for an anode material manufacturing process, and more specifically, to an inversion facility for an anode material manufacturing process that solves the problem of dust intrusion occurring during the process of inverting a firing vessel in an anode material manufacturing process and prevents wear and damage to bearings, thereby ensuring stable operation of the inversion facility. Cathode materials are a key component responsible for battery capacity and output. The manufacturing process of cathode materials consists of the following main steps. Raw materials such as lithium, nickel, cobalt, and manganese are precisely weighed and mixed (raw material mixing), the mixed raw materials are heat-treated at a high temperature to produce a positive electrode active material (calcination), and the calcined active material is ground to a uniform size. Subsequently, a coating layer is formed on the surface of the ground active material to improve performance (coating), the coated active material is dried to remove moisture (drying), and the dried active material is classified by particle size (classification). Among these, a kiln is used in the above firing step. The above-described kiln stably forms a high-temperature atmosphere inside, and raw materials can be fed in and transported by the operation of a pusher or roller. At this time, the raw materials are transported in a firing vessel referred to as saggar, refractory case, or refractory container, and are sintered through the firing process. The product contained in the firing vessel can then be discharged to the outside of the firing vessel through a process of inverting the vessel. Here, an inverter is used to invert the firing vessel containing the product by turning it 180 degrees. Here, the inverter has a main body in which an inner space is formed. An inverter rotation unit is disposed in the inner space. A saga containing a product that has been fired is positioned in the inverter rotation unit. The saga is a refractory container, and its upper end is gripped by a gripping member provided in the inverter rotation unit. A pair of rotation shafts is installed at both lower ends of the above-mentioned inverter rotation unit. Each of the pair of rotation shafts is rotatably supported at both ends of the main body. The rotation shafts are rotated by the rotational drive of a driving device. Through this, the saga supported by the inverter rotation unit can be rotated to flip over. Here, rotation holes are formed at both ends of the main body, through which each of the aforementioned pair of rotation axes passes and is rotatably supported. A bearing housing is installed in the above-mentioned rotating hole, having a through hole through which a rotating shaft passes. A packing is installed on the inner circumference of the through hole of the bearing housing to seal the outer circumference of the rotating shaft. Additionally, a bearing member is installed in the through hole of the bearing housing, spaced apart from the packing, to guide the rotation of the rotating shaft. Furthermore, an oil seal is installed in the through hole of the bearing housing to seal the outer circumference of the outermost end of the rotating shaft. A driving device for rotating the rotating shaft is disposed on the outside of the main body. Through this configuration, the driving device rotates the rotation axis to invert the inverting unit located in the inner space of the main body. Then, the saga is inverted while gripped by the inverting unit, and the product formed from powder contained in the saga falls downward. At this time, dust is diffused in the inner space of the main body due to the falling powder, and a certain high-temperature atmosphere is formed due to the product that has completed the firing process. In this way, a high temperature is formed inside the main body, and a temperature lower than the internal temperature of the main body is formed outside the main body. Due to the high temperature, the air density inside the main body decreases, resulting in a positive pressure (+) state where the pressure is higher than the outside. This is due to the following reasons: The air inside the main body is heated and expands; as the expanded air increases in volume, it generates a force attempting to push it outward, which increases the internal pressure. Convection occurs, in which hot air rises and cold air descends. During this process, the air inside the main body moves more actively than the outside, further increasing the pressure. And the dust diffused into the inner space of the main body floats in the air, increasing the density of the air; as the density increases, the air becomes heavier and the pressure rises. And due to the positive pressure inside the main body, dust can penetrate into the bearing housing through the small gap between the rota