CN113862486A

CN113862486A - Rectifying method charging furnace and rectifying device

Info

Publication number: CN113862486A
Application number: CN202111139979.7A
Authority: CN
Inventors: 付超; 张虎; 任志恒; 梁修兵; 孔凡磊; 战斗
Original assignee: Zhongke Zhuoyi Environmental Technology Dongguan Co ltd; Songshan Lake Materials Laboratory
Current assignee: Zhongke Zhuoyi Environmental Technology Dongguan Co ltd; Songshan Lake Materials Laboratory
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2021-12-31

Abstract

The embodiment of the application provides a rectifying method charging furnace and a rectifying device, and relates to the technical field of metal smelting. The rectifying charging furnace comprises a chute and a furnace wall arranged on the chute, the chute and the furnace wall jointly form a furnace body, the two ends of the chute are respectively provided with a feeding port and a discharging port, a heating chamber and a charging chamber communicated through the chute are separated in the furnace body, the heating chamber is communicated with the feeding port, the charging chamber is communicated with the discharging port, a porous ceramic burner used for heating the heating chamber is arranged on the furnace wall of the heating chamber, a charging opening is formed in the furnace wall of the charging chamber, and the charging opening is provided with a furnace door capable of being opened and closed automatically. The rectifying method feeding furnace and the rectifying device realize feeding for the rectifying tower, have uniform heating, low energy consumption, little pollution, little oxidation and high safety.

Description

Rectifying method charging furnace and rectifying device

Technical Field

The application relates to the technical field of metal smelting, in particular to a rectifying method charging furnace and a rectifying device.

Background

The zinc ingot is pure zinc or zinc with the purity of more than 90 percent, is mainly used in the fields of die-casting alloy, battery industry, printing and dyeing industry, pharmaceutical industry, rubber industry, chemical industry and the like, and the alloy of zinc and other metals is widely applied to the industries of electroplating, spraying and the like. At present, zinc ingots are produced by adopting cadmium-containing zinc as a raw material through rectification, in the process of producing the zinc ingots by a rectification method, cadmium-containing zinc melt is subjected to multiple times of distillation and fractional condensation reflux through a cadmium tower, pure zinc is produced at the lower part of the cadmium tower, and cadmium is enriched in high cadmium zinc.

In the multiple distillation process, secondary or multiple feeding is needed to ensure the production efficiency, the conventional operation mode is that cadmium-containing zinc subjected to primary distillation is added into a liquid tank for feeding a cadmium tower through a feed inlet, raw materials are heated by adopting a flame spray gun in the flowing process in the liquid tank, a cadmium zinc block is manually added at a position close to a discharge outlet for feeding, and the formed high cadmium zinc liquid flows out of the discharge outlet to the cadmium tower for secondary distillation.

Because the conventional feeding structure of the cadmium tower uses a flame spray gun for heating, the heating mode has the problems of uneven heating, high energy consumption, heavy pollution and easy oxidation, and the heated area is directly communicated with the subsequent feeding area, so that the operation of manually taking up the heat-insulating cover plate has great danger.

Therefore, a charging structure with uniform heating, low energy consumption, less pollution, less oxidation and high safety is needed.

Disclosure of Invention

An object of this application embodiment is to provide a reinforced stove of rectification method and rectifier unit, realize giving the rectifying column reinforced, its heating is even, and the energy consumption is low, the pollution is little, the oxidation is few, and the security is high moreover.

The first aspect, this application embodiment provides a reinforced stove of rectification method, it includes the furnace wall that chute and lid were located on the chute, chute and furnace wall form the furnace body jointly, the both ends of chute are feed inlet and discharge gate respectively, separate into heating chamber and the charge chamber through the chute intercommunication in the furnace body, heating chamber and feed inlet intercommunication, charge chamber and discharge gate intercommunication, install the porous ceramic burner who is used for heating the heating chamber on the furnace wall of heating chamber, the charge door has been seted up to the furnace wall of charge chamber, the charge door is provided with the furnace gate that can open and shut automatically.

In the implementation process, the raw materials (such as cadmium-zinc-containing raw materials) enter the chute through the feeding hole, and the porous ceramic burner can be fully combusted, so that the heating chamber is heated to a higher temperature (such as 500-700 ℃), the heating is uniform, the energy consumption is low, the pollution is small, the raw materials (such as cadmium-zinc-containing raw materials) can be heated into a melt (such as cadmium-zinc-containing melt), and the oxidation is less; the high-temperature melt (such as cadmium-zinc-containing melt) automatically flows to the discharge port, and in the process of flowing through the feeding chamber, the furnace door is automatically opened, so that large ingots (such as cadmium-zinc blocks) can be added into the high-temperature melt (such as cadmium-zinc-containing melt) to form the melt (such as cadmium-zinc-containing melt), and the melt enters the rectifying tower (such as a cadmium tower) through the discharge port for rectification. In the process, the heating chamber and the charging chamber are partitioned, so that the heat of the heating chamber is concentrated, the heating efficiency is high, and the loss of the heat from the charging opening can be reduced; in addition, the design that the furnace door of charge door is automatic to be opened and shut simultaneously is set up in the subregion, can avoid causing the injury to the reinforced personnel of operation, and the security is high.

In one possible implementation, the porous ceramic burner is mounted on the furnace wall above the chute by a mounting bracket, and the porous ceramic burner extends into the furnace body and faces the chute.

In the realization process, the heat released by the porous ceramic burner can directly heat the heating chamber, in particular can directly heat the raw materials in the chute.

In a possible implementation, the porous ceramic burner comprises a casing provided with an air inlet for letting in combustion gas and a heat port for releasing heat to the outside of the casing, a porous ceramic layer for combustion of the combustion gas being provided in the casing, the heat port being directed towards the chute and flush with the inner surface of the furnace wall.

In the above-mentioned realization process, porous ceramic layer can guarantee that gaseous abundant burning, and the high-temperature gas of production is flushed with the oven internal surface by heat mouthful entering heating chamber in, can guarantee that high-temperature gas directly gets into in the heating chamber, reduces the high-temperature melt splash moreover to porous ceramic burner in.

In one possible implementation, the height of the heating chamber relative to the horizontal plane is greater than the height of the loading chamber relative to the horizontal plane.

In the implementation process, the heating chamber is relatively large in height, so that the high-temperature gas generated by the porous ceramic burner can fully heat the raw material into a melt, the feeding chamber is relatively small in height, the material block can be directly added into the melt, the melt splashing is reduced, and the heat loss of the feeding chamber can be reduced.

In a possible implementation mode, one side of the furnace door is hinged with the furnace wall of the charging opening and is driven to open or close by a power mechanism, and a travelling crane is arranged above the charging opening.

In the implementation process, the furnace door is driven to open around the hinged part through the power mechanism, and the enlarged ingot is lifted through a travelling crane, so that automatic feeding is realized.

In a possible implementation manner, the power mechanism comprises an electric pump and a retractable traction rope, and two ends of the traction rope are respectively connected with the electric pump and one end of the oven door far away from the hinged part.

In the implementation process, the electric pump is used for retracting and releasing the traction rope, so that the side opening or side closing of the furnace door around the hinged position can be controlled.

In a possible implementation manner, the furnace door is arranged outside the furnace body and can move in a translation manner, and a feed hopper or a feed tower is arranged above the feed inlet.

In the implementation process, the feed inlet is opened in the translation of the furnace door, automatic feeding is carried out through the feed hopper or the feed tower, and the heat loss of feeding can be reduced by controlling the opening degree of the furnace door and the distance between the feed hopper or the feed tower and the feed inlet.

In a possible implementation mode, rails are arranged outside the furnace wall on two opposite sides of the charging opening, rollers are mounted on two opposite sides of the furnace wall, the rollers can move along the rails, and the furnace door can move along the rails through the driving of an air cylinder.

In the implementation process, the air cylinder drives the furnace door to translate along the rail through the roller, so that the feeding hole can be automatically opened and closed.

In a second aspect, an embodiment of the application provides a rectifying device, which comprises a rectifying tower and a rectifying method charging furnace provided by the first aspect, wherein a discharge hole of the rectifying method charging furnace is communicated with the rectifying tower.

In the implementation process, the melt (such as cadmium-zinc-containing melt) flowing out of the discharge port of the rectifying method charging furnace enters a rectifying tower (such as a cadmium tower) through the discharge port for rectification, and the material flowing out of the rectifying tower can be added into the rectifying tower again through the rectifying method charging furnace for secondary or repeated rectification.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a schematic structural view of a rectification charging furnace provided in a first embodiment of the present application;

fig. 2 is a schematic structural diagram of a rectification charging furnace according to a second embodiment of the present application.

Icon: 100-a rectifying method charging furnace; 110-a chute; 120-a furnace wall; 121-a feed inlet; 131-a feed inlet; 132-a discharge port; 141-a heating chamber; 142-a loading chamber; 150-porous ceramic burner; 151-air inlet; 152-a porous ceramic layer; 153-heat port; 160-a mounting bracket; 170-oven door; 171-an electric pump; 172-a pull-cord; 200-a rectifying method charging furnace; 210-a furnace door; 220-a track; 230-a feed hopper.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be noted that the terms "upper", "lower", "horizontal", "inner", "outer", and the like refer to orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally found in use of products of the application, and are used for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.

Furthermore, the term "horizontal" merely means that its orientation is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

First embodiment

Referring to fig. 1, a rectifying method charging furnace 100 provided by the present embodiment includes a chute 110 and a furnace wall 120 covering the chute 110, the chute 110 and the furnace wall 120 together form a furnace body, a feeding port 131 and a discharging port 132 are respectively provided at two ends of the chute 110, the furnace body is divided into a heating chamber 141 and a charging chamber 142 communicated through the chute 110, the heating chamber 141 is communicated with the feeding port 131, the charging chamber 142 is communicated with the discharging port 132, a porous ceramic burner 150 for heating the heating chamber 141 is installed on the furnace wall 120 of the heating chamber 141, a charging port 121 is provided on the furnace wall 120 of the charging chamber 142, and the charging port 121 is provided with a furnace door 170 capable of automatically opening and closing.

In the embodiment, the height of the heating chamber 141 relative to the horizontal plane is greater than the height of the loading chamber 142 relative to the horizontal plane. The horizontal plane refers to the liquid level of the melt in the chute 110 when the rectifying charging furnace 100 is in normal operation, and the relative height of the heating chamber 141 is larger than that of the charging chamber 142, so that a stepped shape is formed.

In the present embodiment, one porous ceramic burner 150 is provided, and in other embodiments, a plurality of porous ceramic burners 150 may be provided, specifically, depending on the volume of the heating chamber 141 and the temperature to be reached. In addition, the porous ceramic burner 150 is typically mounted to the furnace wall 120 above the chute 110 by a mounting bracket 160, with the porous ceramic burner 150 extending into the furnace body and toward the chute 110. In one embodiment, the porous ceramic burner 150 includes a housing having an inlet 151 for introducing combustion gases and a heat port 153 for releasing heat to the outside of the housing, a porous ceramic layer 152 disposed within the housing for combusting the combustion gases, and the heat port 153 facing the chute 110 and being flush with the inner surface of the furnace wall 120.

In the embodiment of the application, one side of the oven door 170 is hinged to the oven wall 120 of the charging opening 121 and is driven to open or close by a power mechanism, and a traveling crane is arranged above the charging opening 121. Specifically, the power mechanism comprises an electric pump 171 and a retractable pulling rope 172, and two ends of the pulling rope 172 are respectively connected with the electric pump 171 and one end of the oven door 170, which is far away from the hinge joint.

The zinc ingot production by the rectification method is based on the characteristic that zinc and impurity elements such as lead, iron, cadmium, copper and the like have different boiling points, and the zinc ingot is obtained by respectively separating high boiling point impurities such as lead, iron, copper and the like and low boiling point impurity cadmium in crude zinc by applying a continuous fractionation principle. The rectification process is divided into two stages, wherein the first stage is to separate high boiling point metals such as lead, iron, copper, tin, indium and the like in a lead tower, control a certain temperature to liquate and refine distillation residues according to the physicochemical characteristics of the metals such as zinc, iron, lead and the like to produce lead (containing indium), iron-zinc hard zinc and cadmium-free zinc, and obtain cadmium-containing zinc by a lead tower condenser; the second stage is carried out in a cadmium tower, the cadmium-zinc-containing melt is subjected to multiple distillation and fractional condensation reflux in the cadmium tower, pure zinc is produced at the lower part of the cadmium tower, and cadmium is enriched in high cadmium zinc.

Correspondingly, the present embodiment further provides a rectification apparatus, which includes a cadmium tower and the above-mentioned rectification method charging furnace 100, wherein the discharge port 132 of the rectification method charging furnace 100 is communicated with the rectification inlet of the cadmium tower, and the rectification outlet of the cadmium tower is communicated with the feed port 131 of the rectification method charging furnace 100.

The process of the rectification device for realizing the zinc ingot production by the rectification method comprises the following steps:

high cadmium zinc separated from a rectification outlet of the cadmium tower is input into a chute 110 of a heating chamber 141 from a feed inlet 131 of the rectification method feeding furnace 100;

introducing combustion gas into an air inlet 151 of the porous ceramic burner 150, fully combusting in a porous ceramic layer 152 in the porous ceramic burner, releasing generated high-temperature gas into a heating chamber 141 through a heat port 153, and heating the high cadmium zinc in the chute 110 to form a melt;

the melt in the chute 110 automatically flows to the discharge port 132, in the process of flowing through the feeding chamber 142, the electric pump 171 tightens the traction rope 172, pulls the furnace door 170 to rotate around the hinge to open the feeding port 121, the travelling crane lifts the cadmium-zinc block to be fed into the high-temperature melt through the feeding port 121 to form high-cadmium-zinc melt, and after the feeding amount reaches a certain amount, the furnace door 170 is automatically closed;

the high cadmium zinc melt flows into the cadmium tower from a rectification inlet of the cadmium tower through a discharge port 132, and after multiple distillations and fractional condensation reflux, the separated high cadmium zinc flows out from a rectification outlet of the cadmium tower and can be introduced into the rectification charging furnace 100 again.

Second embodiment

Referring to fig. 2, the present embodiment provides a rectification charging furnace 200, which has a structure substantially the same as that of the first embodiment, except that: the oven door 210 of the embodiment is disposed outside the oven body and can move horizontally, the feed hopper 230 is disposed above the feed inlet 131, and in another embodiment, a feed tower may be disposed above the feed inlet 131. Specifically, rails 220 are arranged outside the furnace wall 120 on two opposite sides of the charging opening 121, rollers are arranged on two opposite sides of the furnace door 210, the rollers can move along the rails 220, and the furnace door 210 can move along the rails 220 under the driving of an air cylinder. During operation, the air cylinder drives the oven door 210 to move along the track 220, thereby opening or closing the oven door 210 and feeding the material through the feed hopper 230 into the chute 110 of the loading chamber 142 through the feed opening 131.

To sum up, the reinforced stove of rectification method and the rectifier unit of this application embodiment realize giving the rectifying column reinforced, and its heating is even, and the energy consumption is low, the pollution is little, the oxidation is few, and the security is high moreover.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a reinforced stove of rectification method, its characterized in that, it includes the chute and covers and locates oven on the chute, the chute with the oven forms the furnace body jointly, the both ends of chute are feed inlet and discharge gate respectively, separate into in the furnace body and pass through heating chamber and the charge chamber of chute intercommunication, the heating chamber with the feed inlet intercommunication, the charge chamber with the discharge gate intercommunication, install on the oven of heating chamber and be used for heating the porous ceramic burner of heating chamber, the charge door has been seted up to the oven of charge chamber, the charge door is provided with the furnace gate that can open and shut automatically.

2. The rectification charging furnace according to claim 1, wherein the porous ceramic burner is mounted on the furnace wall above the chute by a mounting bracket, the porous ceramic burner extending into the furnace body and facing the chute.

3. The rectifying charging furnace according to claim 2, characterized in that said porous ceramic burner comprises a casing provided with an inlet for the passage of combustion gases and with a heat port for the release of heat outside said casing, said casing being provided with a porous ceramic layer for the combustion of the combustion gases, said heat port being directed towards said chute and flush with the inner surface of said furnace wall.

4. The rectification charging furnace according to claim 1, wherein a height of the heating chamber with respect to a horizontal plane is greater than a height of the charging chamber with respect to the horizontal plane.

5. The rectifying charging furnace according to claim 1, wherein one side of the furnace door is hinged with the furnace wall of the charging opening and is driven to open or close by a power mechanism, and a travelling crane is arranged above the charging opening.

6. The rectifying charging furnace according to claim 5, wherein the power mechanism comprises an electric pump and a retractable traction rope, and two ends of the traction rope are respectively connected with the electric pump and one end of the furnace door far away from the hinged joint.

7. The rectification charging furnace according to claim 1, wherein the furnace door is arranged outside the furnace body and can move in a translation manner, and a feed hopper or a feed tower is arranged above the feed inlet.

8. The rectifying charging furnace according to claim 7, wherein rails are arranged outside the furnace wall on two opposite sides of the charging opening, rollers are arranged on two opposite sides of the furnace door and can move along the rails, and the furnace door can move along the rails through driving of an air cylinder.

9. A rectification apparatus, characterized in that it comprises a rectification column and a rectification method charging furnace according to any one of claims 1 to 8, the discharge port of the rectification method charging furnace being in communication with the rectification column.