JP2857565B2 - Structure of zinc recovery chamber - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a zinc recovery chamber used in a vacuum processing furnace for galvanized steel sheet waste.

[0002]

2. Description of the Related Art Galvanized steel sheets have a rust-preventing function and are therefore often used, for example, for inner and outer plates of automobile bodies. These galvanized steel sheets are subjected to cutting, pressing, and the like in the production process of the body and the like, so that galvanized steel sheet waste is considerably generated from the production processes.

[0003] In order to recycle these galvanized steel sheet scraps as raw materials for melting, it is known to remove zinc in the surface layer of the steel sheet scraps (Japanese Patent Application Laid-Open No. Sho 63-163).
No. 96224).

[0004] Such a method for dezincing galvanized steel sheet waste is as follows.
The steel plate scraps are separated by utilizing the difference in vapor pressure between iron and zinc.
By heating to 00 ° C. and further performing a shot blast treatment, zinc in the surface layer is removed to remove zinc by approximately 82%.
The steel sheet scrap is separated into zinc and steel sheet scrap under a percentage of steel, and the steel sheet scrap is reused as a raw material for melting.

In producing a brass material provided with a conductive layer from a brass material, a brazing material as a raw material is vacuum-heated, and then a cooling chamber in which the internal pressure is maintained at approximately atmospheric pressure by an inert gas. Is also known in which the zinc component evaporated in the cooling chamber is sent to a recovery chamber together with an inert gas to recover the evaporated zinc (Japanese Patent Publication No. 4-35537).
No.).

In this method of dezincing a brass material, a brass plate is vacuum-heated in a heating chamber to evaporate and scatter zinc in a cooling chamber, and the evaporated zinc adheres at atmospheric pressure by a heat exchanger provided in a recovery chamber. The product is used as a brass material having a conductive layer for a terminal substrate or the like.

[0007]

Incidentally, the above-mentioned conventional structure is a structure in which a zinc recovery chamber is provided inside a vacuum processing furnace. In the furnace, the steel scrap is continuously treated and the recovered zinc is batch-processed, which may complicate the processing of a large amount of galvanized steel scrap and the configuration and operation adjustment of a vacuum processing furnace for zinc recovery. Not preferred.

The present invention has been made in order to solve the above-mentioned problems of the prior art. In a zinc recovery chamber connected to a vacuum processing furnace by an introduction path, zinc evaporated from the vacuum processing furnace is stored in a recovery box. A zinc recovery chamber structure that can achieve high-efficiency zinc recovery in the zinc recovery chamber by collecting and coagulating the zinc in the zinc recovery chamber and simplify operation adjustment such as mold release of the solidified zinc outside the zinc recovery chamber The purpose is to provide.

[0009]

In order to achieve the above object, the present invention provides a structure of a zinc recovery chamber used in a vacuum processing furnace for galvanized steel sheet waste, comprising: a body held in a low-temperature atmosphere; Has an introduction path for communicating with the vacuum processing furnace, and an exhaust port for communicating the body with a vacuum system,
And heating means for maintaining a high temperature atmosphere introducing path provided inside the introduction passage, accommodated inside the body, a collecting box which is freely drawer, move the collection box outside the cylinder body
And a front end plate which can be freely opened and closed for feeding . The collection box is assembled and disassembled into a cubic or cylindrical shape by a panel, and is freely disengaged. , A connecting material is provided on the top.

[0010]

In this way, zinc evaporated from the galvanized steel sheet scraps processed in the vacuum processing furnace is introduced into the zinc recovery chamber, which is depressurized by the vacuum system and brought into a low-temperature atmosphere by the refrigerant, through the introduction path. Then, they are collected in a cubic or cylindrical collection box placed on the moving means and solidified on the inner surface of the collection box to form a solidified zinc lump. After zinc recovery chamber is pressurized restored to the atmospheric pressure, opening the front portion end plate, and transferring the collection box in the outdoor, dismantled panels collection box at a predetermined position, releasing the solidified zinc mass is performed Used as recovered zinc.

The collection box is assembled and engaged with the panel,
The connecting material is attached to the top, placed on the transfer means and stored in the zinc recovery chamber again, the inlet is connected to the connecting material, the front end plate is closed, the pressure is reduced by linking with the vacuum system, and the evaporation is performed. The recovery of zinc is repeated. As described above, it is possible to simplify the operation adjustment such as the zinc recovery and the zinc release in the zinc recovery chamber, and it is possible to effectively recover zinc from a large amount of galvanized steel sheet waste.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of the structure of a zinc recovery chamber showing one embodiment of the present invention, and FIG. 2 is a cross-sectional view of FIG. 1 and 2, reference numeral 10 denotes a zinc recovery chamber, reference numeral 12 denotes a vacuum processing furnace, and reference numeral 14 denotes an introduction path connecting the vacuum processing furnace 12 and the zinc recovery chamber 10.

The zinc recovery chamber 10 is formed in a container shape with a cylindrical body 16, a front end plate 22 and a rear end plate 24. The body 16 is provided with an outer body plate 18 on the outside, and the body 1
A cooling passage 20 having a small gap is formed between the outer body 6 and the outer body 18. The cooling passage 20 is also formed in the front mirror section 22 and the rear end plate 24.
For example, water or the like is circulated, and the zinc recovery chamber 10 is kept in a low-temperature atmosphere.

Reference numeral 15 denotes an entrance portion opened at the top of the body 16, and the inside is lined with a heat insulating material, and a heating means 30, for example, an electric heating plate or the like is provided on the inner surface of the heat insulating material. The inner diameter of the inlet 15 is engaged with the inner diameter of the introduction path 14 so as to match the inner diameter of the introduction path 14.
4. Evaporated zinc from the vacuum processing furnace 12 introduced through the inlet 15 solidifies and accumulates on the inner surface of the inlet 15 and the inner surface of the cylindrical guide piece 48, preventing smooth introduction. Is prevented.

The front end plate 22 can be quickly opened and closed by opening and closing means 26 provided at the end of the body 16, and the collection box 32 accommodated in the body 16 is transferred from the zinc collection chamber 10 by the transfer means 40. Drawer or zinc recovery chamber 10
The opening and closing means 26 can be operated from the outside, and can be opened and closed more quickly and easily using an actuator or the like.

An exhaust port 28 for communicating with a vacuum system is opened at a substantially central portion of the rear end plate 24, and the gas in the zinc recovery chamber 10 is exhausted by the operation of the vacuum system and kept in a reduced pressure atmosphere. . Reference numeral 42 denotes a cradle provided on the body 16.

The transfer means 4 is provided inside the body 16 at the bottom of the body.
0, for example, a roller conveyor or the like is attached. The collection box 32 is placed on the transfer means 40 so as to be in contact with the floor plate 38 of the collection box 32, and can be transferred in the longitudinal direction of the body 16, and As described above, the collection box 32 is pulled out of or stored in the zinc collection chamber 10 in accordance with the opening and closing of the partial end plate 22, and the collection box 32 is configured to collect and coagulate the evaporated zinc in the original position. Have been.

The collection box 32 has a cubic structure assembled from panels on each surface. A connecting member 36 is attached to the top, which is the ceiling surface, and a floor plate 38 is attached to the bottom, so that the collection box 32 has a cubic shape. Is formed.

The connection member 36 is attached to the top of the collection box 32 in advance outside the zinc collection chamber 10, and after the collection box 32 is accommodated in the zinc collection chamber 10, the end face of the entrance 15 and the airtight material 34 are connected. The connecting member 36 is lifted by using the fastening means 46 attached to the connecting member 36 so that the top surface of the connecting member 36 is inserted and attached to the connecting member 36 so as to be securely connected. Conversely, when detaching the connecting member, the connecting member 36 is lowered by using the fastening means 46 so as to be detached, and thus the connecting member 36 is made detachable.

A cylindrical guide piece 48 is provided below the connecting member 36.
When the collection box 32 is housed in the zinc collection chamber 10 and placed in the original position, the guide piece 48 is inserted into the collection box 32 to guide the flow of the airflow, The air flow including the evaporated zinc flowing through the introduction path 14, the inlet portion 15, and the guide piece 48 as shown in the arrow C is changed in direction as shown by the arrow C, and the direction of the air flow is continuously changed. Only gas is evacuated to the vacuum system as indicated by arrow B.

Thus, the airflow containing the evaporated zinc is
The flow path is not disturbed by accumulation or the like, and is not short-circuited and leaked out of the collection box 32. , The collection box 3
Collection and solidification of the evaporated zinc in the interior 2 can be achieved with high efficiency, and the entrainment of zinc particles in the exhaust gas from the exhaust port 28 can be substantially eliminated.

When the collection of zinc in the collection box 32 is completed, the pressure in the zinc collection chamber 10 is restored to the atmospheric pressure as described above, the front end plate 22 is opened, and the connecting piece 36 is lowered by using the fastening means 46. The contact with the end face of the inlet portion 15 is desorbed, and the collection box 32 is transferred to the outside of the zinc collection chamber 10, where the panel is disassembled and released at a predetermined position. At this time, the connecting material 36 is removed from the top of the collection box 32, and subsequently,
The panels on each side are loosened and dismantled.

The above panel is repeatedly used for assembling, and the connecting member 36 is attached to the top of the collection box 32 in advance at the time of assembling. As described above, the above-described operation is sequentially repeated for the collection box 32.

[0024]

As described above, according to the present invention,
Galvanized steel scrap generated in the production process of automobile bodies and the like is vacuum-processed in a vacuum processing furnace, and zinc is evaporated from the vacuum processing furnace into a collection box in a zinc recovery chamber connected to the vacuum processing furnace by an introduction path. A large amount of energy can be collected and solidified to achieve zinc recovery in the zinc recovery chamber with high efficiency, and operation adjustments such as mold release of the solidified zinc mass outside the zinc recovery chamber can be simplified. It works.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a structure of a zinc recovery chamber showing one embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Zinc collection chamber 12 Vacuum processing furnace 14 Introducing path 16 Body 28 Exhaust port 30 Heating means 32 Collection box 36 Connecting material

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Mitsuo Ijuin 1780, Kamitakano, Yachiyo-shi, Chiba Prefecture Inside the Yachiyo Plant of Kawasaki Shige Kogyo Co., Ltd. Yachiyo Plant (72) Inventor Yuji Okada 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Inventor Shunichi Fujio 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Inventor Kazuhiro Suzuki 3-33 Konosu-cho, Toyota City, Aichi Prefecture Toyokin Co., Ltd. (72) Inventor Yoshiyoshi Nakatani 2-4-7 Kyomachibori, Nishi-ku, Osaka-shi, Osaka Chugai Furnace Industry Co., Ltd. (56) References Special JP-A 52-12622 (JP, A) JP-A-5-70855 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) C22B 19/30 C22B 19/04

Claims (2)

(57) [Claims] 1. A zinc recovery chamber structure for use in a vacuum processing furnace for galvanized steel sheet waste, comprising: a body maintained in a low-temperature atmosphere; and an introduction path for communicating the body with the vacuum processing furnace;
A heating means provided inside the introduction path for maintaining the introduction path in a high-temperature atmosphere, having a discharge port for communicating the body with a vacuum system, and a recovery mechanism which can be housed and pulled out inside the body. Transporting the box and the collection box to the outside of the fuselage
And a front end plate that can be freely opened and closed for use . 2. The zinc collecting apparatus according to claim 1, wherein the collecting box is assembled and disassembled into a cubic or cylindrical shape by a panel, and a connecting material is provided on a top portion. The structure of the room.