CN113399636A - Seven-stream horizontal continuous casting equipment - Google Patents

Abstract

The invention discloses a seven-flow horizontal continuous casting device, which belongs to the field of tube blank production devices, can realize the casting of seven-flow tube blanks, improves the production efficiency and reduces the production period, and comprises: shaft furnace, refining furnace, mixing furnace, standing furnace and seven-strand continuous casting furnace; wherein, the refining furnace includes the furnace body, locates the gas blowing device of furnace body below, the cavity diapire of furnace body is equipped with the brick of blowing, gas blowing device sees through the brick of blowing to blow in inert gas and/or reducing gas in the furnace body, be equipped with air inlet unit on the shaft furnace for let in the mist including air and gas in to the shaft furnace, still including connecting air inlet unit's detection device and adjusting device, detection device is used for detecting mist's composition proportion in order to control adjusting device adjusts the mist composition proportion, keeps reducing atmosphere in the shaft furnace.

Description

Seven-stream horizontal continuous casting equipment

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of pipe blank production equipment, in particular to seven-flow horizontal continuous casting equipment.

[ background of the invention ]

Copper is one of the earliest metals used by humans and is also an important strategic material. Copper pipes in China are mainly applied to the fields of air conditioning refrigeration, buildings, architectural decoration, ships, ocean engineering and the like, and about 75 percent of copper pipes are applied to the refrigeration industry.

The traditional advanced production mode of the air-conditioning refrigeration copper pipe at present at home and abroad is as follows: two electric furnaces of 2.3t/h are adopted to melt copper, a heat preservation furnace is adopted to pull horizontal continuous casting with 2-5 total counts to produce casting blanks at one time, core rod intermittent planetary rolling ring pipes are repeatedly advanced and retreated one by one, the casting blanks are produced by the processes of medium-low speed combined drawing, inverted disc drawing machines, induction annealing, internal thread forming, small disc repeated winding, multi-support annealing and the like, and the intermediate rotation sequence still adopts transportation equipment such as specially-assigned operation travelling cranes to operate. Man-machine labor efficiency is low, production cycle is long, production line productivity is low, input-output ratio is large, multiple production lines are needed when production capacity is increased, occupied area is large, energy consumption is large, carbon emission is high, and environmental protection is not facilitated.

[ summary of the invention ]

The invention aims to solve the technical problem of overcoming the defects of the prior art and providing seven-flow horizontal continuous casting equipment, which can realize seven-flow tube blank casting, improve the production efficiency and reduce the production period.

In order to solve the technical problems, the invention adopts the following technical scheme:

seven-stream horizontal continuous casting apparatus comprising: a shaft furnace for melting copper material; and a refining furnace for refining the molten copper; the mixing furnace is connected with the shaft furnace and the refining furnace, is used for mixing copper liquid and phosphorus copper, and is provided with a phosphorus copper adding port; the standing furnace is connected with the refining furnace and is used for deeply melting slag; the seven-strand continuous casting furnace is connected with the standing furnace and is used for casting seven casting blanks simultaneously; wherein, the refining furnace includes the furnace body, locates the gas blowing device of furnace body below, the cavity diapire of furnace body is equipped with the brick of blowing, gas blowing device sees through the brick of blowing to blow in inert gas and/or reducing gas in the furnace body, be equipped with air inlet unit on the shaft furnace for let in the mist including air and gas in to the shaft furnace, still including connecting air inlet unit's detection device and adjusting device, detection device is used for detecting mist's composition proportion in order to control adjusting device adjusts the mist composition proportion, keeps reducing atmosphere in the shaft furnace.

On the basis of the scheme, the phosphorus copper feeding port is connected with a phosphorus copper feeding machine, the phosphorus copper feeding machine comprises a storage barrel and a discharge passage connected with the phosphorus copper feeding port, and a rotary feeding disc with a plurality of storage areas is arranged between the storage barrel and the discharge passage.

On the basis of the scheme, the rotary feeding plate comprises a first fixed plate, a second fixed plate and a rotary plate, wherein the rotary plate is rotatably arranged between the first fixed plate and the second fixed plate, a feed inlet connected with the storage barrel is formed in the first fixed plate, a discharge outlet connected with the discharge passage is formed in the second fixed plate, and the plurality of storage areas are arranged on the rotary plate and are rectangular arrays.

On the basis of the scheme, a weigher is further arranged in each storage area, and an electromagnetic switch used for controlling phosphor copper to enter the storage areas is arranged below the storage barrels.

On the basis of the scheme, a plurality of baffle plates which are arranged at intervals up and down are arranged in the mixing furnace to form a zigzag copper liquid channel.

On the basis of the scheme, a first partition plate is arranged on one side, close to the standing furnace, in the refining furnace, a copper liquid output area with an opening at the bottom is formed by the first partition plate and the inner wall of the refining furnace in a surrounding mode, and the copper liquid output area is connected with a copper liquid inlet of the standing furnace.

On the basis of the scheme, a second partition plate is arranged on one side, close to the mixing furnace, in the refining furnace, a molten copper inlet area with an opening at the bottom is formed by the second partition plate and the inner wall of the refining furnace in a surrounding mode, and the inert gas and/or the reducing gas is introduced into the central position of the bottom wall of the refining furnace.

On the basis of the scheme, the air inlet device comprises a plurality of air inlets which are arranged on the vertical direction of the shaft furnace, and the air inlets are connected with a gas pipe and an air blowing pipe.

On the basis of the scheme, the adjusting device comprises an air inlet pipe connected with an air inlet and air inlet valves arranged at the gas pipe and the air blowing pipe, and the detecting device is connected with the air inlet pipe.

On the basis of the scheme, the seven-strand horizontal continuous casting equipment comprises two standing furnaces, wherein the two standing furnaces are connected with the same refining furnace, and the two standing furnaces are respectively connected with one seven-strand continuous casting furnace.

The invention has the beneficial effects that:

according to the seven-flow horizontal continuous casting equipment disclosed by the invention, the shaft furnace is adopted for melting the copper material, so that a large amount of copper liquid can be generated to meet the requirement of the copper liquid for realizing seven-flow casting, phosphorus and copper are used for carrying out deoxidization and impurity removal on the copper liquid, after the deoxidization and impurity removal of the phosphorus and copper, deep slagging is carried out by the standing furnace, the impurities can be further removed, so that the copper liquid with higher quality is obtained, meanwhile, the copper liquid amount is larger, therefore, the seven-flow casting with high quality can be smoothly realized, the production speed of a tube blank is improved, and the production period is shortened;

the mixing furnace is used for mixing phosphorus copper and copper liquid, mixed liquid is input into the refining furnace, a blowing brick in the refining furnace is provided with dense and tiny air holes, gas blown out by a blowing device can penetrate through the blowing brick and enter the furnace body, so that the copper liquid can be stirred through the gas, the copper liquid and the phosphorus copper are fully mixed and reacted, the deoxidization efficiency is improved, automation can be realized without manual stirring, the deoxidization efficiency is improved, and the gas rises in the copper liquid, so that impurities can be brought to the surface of the copper liquid quickly, the specific gravity of the copper liquid is large, therefore, the impurities cannot continue to sink after being brought to the surface by the gas, meanwhile, the gas is in a bubble form in the copper liquid, the bubbles can be influenced by high temperature and high pressure in the copper liquid, and in the rising process of the copper liquid, the copper liquid can press hydrogen melted in the copper liquid into the bubbles after the mixed gas is combusted, therefore, the hydrogen content in the copper liquid can be reduced, and the phenomenon that bubbles appear on the surface of the tube blank due to hydrogen gas separation in the casting blank forming process is avoided;

the mixed gas can be used for heating and melting copper materials in the shaft furnace after being ignited, the air contains oxygen, the components of the fuel gas are mainly hydrogen elements and carbon elements, carbon monoxide or carbon dioxide can be produced after the mixed gas reacts with the oxygen, the carbon monoxide has better reducibility and can react with the oxygen in the copper liquid, the effect of removing oxygen can be achieved, the ratio of the internal air and the fuel gas of the mixed gas can be obtained through detecting the flow of the air and the natural gas, the atmosphere in the shaft furnace after the mixed gas enters the shaft furnace for reaction can be estimated through calculation, the atmosphere in the shaft furnace can be changed by adjusting the component ratio in the mixed gas, the reducing atmosphere in the shaft furnace is kept, the oxygen content in the copper liquid can be effectively reduced, and the quality of the copper liquid is improved.

Furthermore, phosphorus copper feeder is connected to phosphorus copper access hole department, phosphorus copper feeder includes the storage vat, connects the discharging channel of phosphorus copper access hole, the storage vat with set up the rotatory feed table that has a plurality of storage areas between the discharging channel. The phosphorus copper in the storage area can be sent into discharging channel through discharging channel with rotatory feed table in the process, can control the time that the copper liquid was added to the phosphorus copper through the rotational speed of adjusting rotatory feed table, can also adjust the phosphorus copper volume of adding in the storage area simultaneously to change the proportion of copper liquid and phosphorus copper.

Further, rotatory feed table includes first fixed disk, second fixed disk, rotates to be installed rotary disk between first fixed disk and the second fixed disk, be equipped with on the first fixed disk with the feed inlet that the storage vat links to each other, be equipped with on the second fixed disk with the discharge gate that discharging channel links to each other, a plurality of storage areas are located just be rectangular array on the rotary disk. When the rotating disc rotates to the material storage area to the position below the feeding hole, phosphor copper in the material storage barrel can enter the material storage area, and after the rotating disc rotates to the position of the material storage area to the discharging hole, phosphor copper in the material storage area can enter the discharging channel; the arrangement of the regular material storage areas can facilitate the control of the rotating speed and the rotating angle of the rotating disc.

Furthermore, a weigher is arranged in each material storage area, and an electromagnetic switch used for controlling the phosphor copper to enter the material storage areas is arranged below the material storage barrels. The sizes of the phosphor copper blocks are different, so that the amount of the phosphor copper cannot be judged according to the space occupied by the phosphor copper in the material storage areas, and the weigher can measure the amount of the phosphor copper in each material storage area, so that the addition amount of the phosphor copper is controlled according to the amount of copper liquid in the mixing furnace, and the excessive phosphor content in the copper liquid is avoided.

Furthermore, a plurality of baffle plates which are arranged at intervals up and down are arranged in the mixing furnace to form a tortuous copper liquid channel. The copper block contains a plurality of impurities, wherein part of the impurities are not melted in the molten copper, when the molten copper flows in the mixing furnace, the molten copper can be continuously contacted with the baffle, and the flow path of the molten copper is in a shape fluctuating up and down in the transverse direction, so that part of the impurities in the molten copper can be blocked by the baffle and cannot continuously flow into the refining furnace, and the impurities which are not melted in the molten copper and enter the refining furnace are eliminated through the cooperation of the plurality of baffles.

Furthermore, a first partition plate is arranged on one side, close to the standing furnace, in the refining furnace, a copper liquid output area with an opening at the bottom is formed by the first partition plate and the inner wall of the refining furnace in a surrounding mode, and the copper liquid output area is connected with a copper liquid inlet of the standing furnace. Still there are impurity such as oxygen, hydrogen in the copper liquid in the refining furnace, can directly block the copper liquid that enters into the refining furnace from the hybrid furnace through first baffle, the copper liquid flows the in-process earlier can be stirred by gas and abundant edulcoration, consequently is close to the lower floor copper liquid of the stove position of stewing comparatively clean, takes out this part copper liquid and carries out the pipe casting, can guarantee the quality of pipe.

Furthermore, a second partition plate is arranged on one side, close to the mixing furnace, in the refining furnace, a molten copper inlet area with an opening at the bottom is formed by the second partition plate and the inner wall of the refining furnace in a surrounding mode, and the inert gas or the reducing gas is introduced into the central position of the bottom wall of the refining furnace. Through blockking of second baffle, can avoid entering into the copper liquid in the stove of stewing from the refining furnace, the direct below that flows to copper liquid output area, the second baffle can cushion the copper liquid to guarantee that the copper liquid can carry out abundant deoxidization edulcoration, improve the copper liquid quality.

Further, the air inlet device comprises a plurality of air inlets which are arranged on the vertical direction of the shaft furnace, and the air inlets are connected with a gas pipe and an air blowing pipe. Through setting up a plurality of air inlets, can let in each part of shaft furnace with mist, can keep the interior temperature of shaft furnace even, improve and smelt efficiency.

Furthermore, the adjusting device comprises an air inlet pipe connected with an air inlet and air inlet valves arranged at the gas pipe and the air blowing pipe, and the detecting device is connected with the air inlet pipe. The detection device can obtain the mixed gas at the air inlet through the air inlet pipe so as to be used for detecting the component proportion of the mixed gas, and the flow of the fuel gas or the flow of the air can be adjusted through the air inlet valve, so that the mixed gas keeps proper cost proportion to ensure the quality of the copper liquid.

Furthermore, the seven-strand horizontal continuous casting equipment comprises two standing furnaces, wherein the two standing furnaces are connected with the same refining furnace, and the two standing furnaces are respectively connected with one seven-strand continuous casting furnace. The standing furnaces need a certain time to treat the copper liquid, so that when one standing furnace is treating the copper liquid, the other standing furnace is connected with the seven-flow continuous casting furnace to cast a tube blank, and after the tube blank casting is finished, the former standing furnace finishes treating the copper liquid, and can continue casting the tube blank, thereby continuously producing the tube blank.

These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The invention is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic structural view of a seven-strand horizontal continuous casting apparatus according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is a schematic view showing the connection of a seven-strand continuous casting furnace with a refining furnace and a standing furnace according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a phosphorus copper feeder according to an embodiment of the present invention;

FIG. 5 is a plan view of portions of a rotary feed tray in an embodiment of the present invention.

Reference numerals:

shaft furnace 100, gas inlet 110;

mixing furnace 200, baffle 210;

the device comprises a phosphorus copper feeder 300, a storage barrel 310, a discharge channel 320, a storage area 330, a rotary feeding tray 340, a first fixed tray 341, a second fixed tray 342, a rotary tray 343, a feed inlet 344, a discharge outlet 345 and an electromagnetic switch 346;

a refining furnace 400, a furnace body 410, an air blowing device 420, an air blowing brick 430, a weighing device 440, a first partition plate 450, a copper liquid output area 451, a second partition plate 460 and a copper liquid inlet area 461;

standing the furnace 500;

a seven-strand continuous casting furnace 600.

[ detailed description ] embodiments

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 4, an embodiment of the present invention discloses a seven-stream horizontal continuous casting apparatus, which can realize seven-stream casting on the premise of ensuring quality.

The seven-strand horizontal continuous casting apparatus includes: a shaft furnace 100 for melting copper material; and a mixing furnace 200 connected to the shaft furnace 100 and the phosphorus copper feeder 300 for mixing the molten copper and the phosphorus copper; the refining furnace 400 is connected with the mixing furnace 200 and is used for refining the molten copper; and a standing furnace 500 connected with the refining furnace 400 for deep slagging; and a seven-strand continuous casting furnace 600 connected to the static casting furnace 500 for casting seven casting billets at the same time.

Seven class horizontal continuous casting equipment adopts shaft furnace 100 to carry out the melting of copper material, can produce a large amount of copper liquid to satisfy the copper liquid demand volume that realizes seven class casting, the copper liquid uses phosphorus copper to carry out the deoxidization edulcoration, after the deoxidization edulcoration through phosphorus copper, thereby carries out further edulcoration again and obtains the higher copper liquid of quality, and the copper liquid volume is great simultaneously, consequently can realize the seven class casting that the quality is high smoothly, has improved the production speed of pipe, reduction production cycle.

The method for producing the tube blank by the seven-flow horizontal continuous casting equipment comprises the following steps:

s10, introducing mixed gas containing air and fuel gas into the shaft furnace, and keeping reducing atmosphere in the shaft furnace;

s20, igniting the mixed gas to melt the copper material, making the copper liquid flow into the mixing furnace, feeding a phosphor copper block into the mixing furnace by a phosphor copper feeder, feeding the copper liquid with the melted phosphor copper block into a refining furnace, simultaneously weighing the weight of the refining furnace, obtaining the copper liquid amount increased by the refining furnace in unit time, and adjusting the weight of the phosphor copper added by the phosphor copper feeder;

s30, introducing inert gas and/or reducing gas into the bottom wall of the refining furnace, and stirring the copper liquid to accelerate the deslagging speed;

s40, feeding the molten copper at the bottom wall of the refining furnace into a standing furnace, and adding a refining agent (rare earth material) into the standing furnace to stand the molten copper;

and S50, feeding the copper liquid in the standing furnace into a seven-strand continuous casting furnace to produce a casting blank, and measuring the weight of the copper liquid in the standing furnace and the weight of the output copper liquid in real time.

The mixed gas can be used for heating and melting the copper material in the shaft furnace 100 after being ignited, the main components of the mixed gas are air and fuel gas, the air contains oxygen and a large amount of nitrogen, the fuel gas mainly contains hydrogen and carbon, the fuel gas can generate carbon oxides after reacting with the oxygen, the carbon oxides comprise carbon monoxide and carbon dioxide, the carbon monoxide has better reducibility and can react with the oxygen in the copper liquid, so that the deoxidization effect can be achieved, after the reducing atmosphere in the shaft furnace 100 is maintained, the oxygen content in the copper liquid can be effectively reduced, the quality of the copper liquid is improved, meanwhile, the reaction of the fuel gas and the oxygen can generate hydrogen, and the hydrogen can be melted in the copper liquid;

the phosphorus and copper are melted by the copper liquid after being sent into the mixing furnace 200 and then mixed with the copper liquid, and then enter the refining furnace 400, the refining furnace 400 is filled with inert gas and/or reducing gas, the copper liquid can be stirred by gas, so that the copper liquid and the phosphorus copper are fully mixed and reacted, the deoxidization efficiency is improved, the automation can be realized without manual stirring, and the gas rises in the copper liquid, so the impurities can be quickly brought to the surface of the copper liquid, the specific gravity of the copper liquid is higher, the impurities cannot continuously sink after being brought to the surface by the gas, meanwhile, the gas is in the form of bubbles in the copper liquid, the bubbles are influenced by high temperature and high pressure in the copper liquid, in the process of rising in the molten copper, the molten copper can press hydrogen melted in the molten copper into the bubbles after the mixed gas is combusted, therefore, the hydrogen content in the copper liquid can be reduced, and the phenomenon that bubbles appear on the surface of the tube blank due to hydrogen gas separation in the casting blank forming process is avoided;

in order to reduce the phosphorus content in the copper liquid, the amount of phosphorus and copper added into the copper liquid needs to be controlled, the required amount of phosphorus and copper in unit time can be known by detecting the increased amount of the copper liquid in the refining furnace 400 in unit time, and when the change of the amount of the copper liquid is detected, the amount of the phosphorus and copper can be changed along with the change of the amount of the copper liquid, so that the phosphorus content in the copper liquid can be well controlled, and the quality of the copper liquid is improved;

in the production process of the copper liquid and the casting process of the tube blank, the amount of the copper liquid in the standing furnace 500 is observed, so that clean high-quality copper liquid can be stably provided for the seven-strand continuous casting furnace 600, and the quality of the tube blank is ensured.

Due to the characteristics of the shaft furnace 100, long-time air blowing into the shaft furnace 100 is needed before the shaft furnace 100 is used, so that oxygen with low content in the shaft furnace 100 can affect the quality of copper liquid, the reduction of the oxygen content in the copper liquid is most important for ensuring the quality of the copper liquid, if oxygen removal is carried out in the subsequent steps, the whole construction period can be prolonged, and the production efficiency can be affected, therefore, if the reducing atmosphere in the shaft furnace 100 can be maintained, the oxygen content in the copper liquid can be reduced in the process of melting copper blocks into the copper liquid, and the overall production efficiency can be improved.

Specifically, maintaining a reducing atmosphere within the shaft furnace 100 comprises: detecting the flow of air into the shaft furnace 100; detecting the flow of natural gas into the shaft furnace 100; measuring and calculating and adjusting the component proportion of the mixed gas.

Carbon monoxide and carbon dioxide can be generated in the reaction process of oxygen and natural gas, when the oxygen amount is insufficient, more carbon monoxide is generated, so that the interior of the shaft furnace 100 is in a reducing atmosphere, the proportion of the air and the fuel gas of the mixed gas can be obtained through detecting the air and natural gas flow, the atmosphere in the shaft furnace 100 after the mixed gas enters the shaft furnace 100 for reaction can be estimated through measurement, the atmosphere in the shaft furnace 100 can be changed by adjusting the proportion of the components in the mixed gas, so that a better oxygen removing environment can be maintained in the shaft furnace 100, and the oxygen content of copper liquid in the shaft furnace 100 is less than 100 ppm.

In the above, calculating and adjusting the component ratio of the mixed gas includes: introducing a portion of the mixed gas into the detection zone and igniting; detecting the concentration of carbon monoxide in the gas obtained after combustion; and if the concentration of the carbon monoxide is lower than the preset value, reducing the air flow. The product after ignition can be analyzed after the mixed gas is ignited, the higher the concentration of the carbon monoxide is, the better the reducing atmosphere in the shaft furnace 100 is, and when the carbon monoxide is lower than a preset value, the higher the oxygen content in the shaft furnace 100 is, the lower the oxygen removing efficiency is, and the production of a pipe blank is influenced. Naturally, if the carbon monoxide concentration is too high, the hydrogen concentration is also correspondingly higher, and although the hydrogen does not have a large influence on the pipe quality, if the hydrogen is too high, it precipitates during the casting process and bubbles appear on the surface of the pipe blank, and the quality of the pipe blank is also affected, so if the carbon monoxide concentration is too high, the air ratio needs to be increased.

Specifically, the shaft furnace 100 is provided with a gas inlet device, and further comprises a detecting device (not shown) and an adjusting device (not shown) connected to the gas inlet device, wherein the detecting device is used for detecting the component ratio of the mixed gas to control the adjusting device to adjust the component ratio of the mixed gas.

The gas inlet device comprises a plurality of gas inlets 110 arranged in the vertical direction of the shaft furnace 100, and the plurality of gas inlets 110 can introduce mixed gas into each part of the shaft furnace 100, so that the temperature in the shaft furnace 100 can be kept uniform, and the smelting efficiency can be improved.

The gas inlet unit is still including the gas pipe and the gas blow pipe of connecting air inlet 110, the gas pipe is used for letting in the natural gas, the gas blow pipe is used for blowing in the air, adjusting device includes the intake pipe of being connected with air inlet 110, establish the valve of admitting air in gas pipe and gas blow pipe department, detection device and intake-tube connection, with the mist that obtains air inlet 110 department through the intake pipe, thereby be used for detecting mist's composition proportion, can adjust the flow of gas or the flow of air through the valve of admitting air, make mist keep suitable cost proportion, in order to guarantee the copper liquid quality.

Referring to FIG. 2, based on the above embodiment, in another embodiment of the present invention, the refining furnace 400 comprises a furnace body 410, and an air blowing device 420 arranged below the furnace body 410, wherein the bottom wall of the cavity of the furnace body 410 is provided with an air blowing brick 430.

The gas blowing device 420 can blow the inert gas and/or the reducing gas, the gas blowing bricks 430 have dense and extremely small pores, the gas blown by the gas blowing device 420 can pass through the gas blowing bricks 430 into the furnace body 410, and the copper liquid cannot pass through the gas blowing bricks 430, so that the copper liquid can be stirred by the gas.

If the blown gas further includes a reducing gas, the oxygen removal rate of the copper liquid can be further increased.

In the deoxidization in-process in refining furnace 400, the copper liquid surface has still covered the one deck charcoal, and the charcoal can completely cut off oxygen and copper liquid contact to participate in the redox reaction, reduce the interior oxygen content of copper liquid, the charcoal still has stronger adsorption efficiency in addition, and impurity can be adsorbed by the charcoal when the bubble takes the impurity in the copper liquid to the copper liquid surface, so can make things convenient for the salvage work of impurity. The bubble can rise to the copper liquid surface gradually in the copper liquid, consequently can drive impurity, hydrogen and also reach the copper liquid surface, and the edulcoration is effectual, can not make impurity be located the position that is close to the copper liquid upside, and is dragging for the extravagant a large amount of copper liquid of sediment in-process.

In addition, the refining furnace 400 is preferably an electric induction furnace, and the copper water in the furnace can be stirred by the electromagnetic induction effect and heated to raise the temperature.

Referring to fig. 2, 4 and 5, based on the above embodiment, in another embodiment of the present invention, the refining furnace 400 further includes a weighing device 440 for weighing the furnace body 410, and by collecting the weight data of the furnace body 410, the change of the weight of the furnace body 410 between units, i.e. the change amount of the copper liquid, can be obtained, and simultaneously, the weight of the standing furnace 500 is detected, so as to obtain the amount of the copper liquid fed into the refining furnace 400 by the mixing furnace 200 in unit time, and adjust the output amount of the phosphorus copper feeder 300, so that the ratio of the phosphorus copper and the copper liquid is kept in an optimal state, and both sufficient oxygen removal and excessive phosphorus content in the copper liquid can be prevented. Meanwhile, the weight of the standing furnace 500 is detected, and the variation of the copper liquid in the standing furnace 500 in unit time can be obtained to adjust the adding amount of the refining agent.

Wherein, the phosphorus copper feeder 300 can automatically adjust the addition of phosphorus copper. Specifically, the phosphor copper feeder 300 comprises a storage barrel 310 and a discharge channel 320 connected with a phosphor copper feeding port on the mixing furnace 200, a rotary feeding tray 340 with a plurality of storage areas 330 is arranged between the storage barrel 310 and the discharge channel 320, the rotary feeding tray 340 comprises a first fixed tray 341, a second fixed tray 342 and a rotary disc 343 rotatably mounted between the first fixed tray 341 and the second fixed tray 342, a feeding port 344 connected with the storage barrel 310 is arranged on the first fixed tray 341, a discharging port 345 connected with the discharge channel 320 is arranged on the second fixed tray 342, when the rotary disc 343 is rotated to a position below the feeding port 344 from the storage area 330, phosphor copper in the storage barrel 310 can enter the storage areas 330, and when the rotary disc 343 is rotated to a position from the storage area 330 to the discharging port 345, phosphor copper in the storage area 330 can enter the discharge channel 320.

The time for adding the phosphor copper into the copper liquid can be controlled by adjusting the rotating speed of the rotating disc 343, and the amount of the phosphor copper added into the storage area 330 can be adjusted to change the ratio of the copper liquid to the phosphor copper.

The plurality of material storage areas 330 are arranged on the rotating disc 343 in a rectangular array, and the arrangement of the regular material storage areas 330 facilitates the control of the rotating speed and the rotating angle of the rotating disc 343.

For convenience of control, a weighing device is further arranged in each storage area 330, an electromagnetic switch 346 for controlling phosphorus copper to enter the storage area 330 is arranged below the storage barrel 310, and the sizes of phosphorus copper blocks are different, so that the amount of the phosphorus copper cannot be judged according to the space occupied by the phosphorus copper in the storage area 330, the weighing device can measure the amount of the phosphorus copper in each storage area 330, and the addition amount of the phosphorus copper is controlled according to the amount of the copper in the mixing furnace 200, so that the content of the phosphorus copper in the copper liquid is prevented from exceeding the standard.

Namely, in the above step S20: adjusting the weight of the phosphorus copper added by the phosphorus copper feeder, comprising:

calculating the flow of the copper liquid in the mixed furnace according to the increased copper liquid amount of the refining furnace in unit time;

calculating the required weight of phosphorus and copper according to the copper liquid flow;

and the rotary feeding disc weighs the weight of the dropped phosphor copper, and the electromagnetic switch is closed after the weight of the phosphor copper reaches a set value.

Referring to fig. 2, in order to further improve the quality of the tube blank and ensure the cleanness of the molten copper, in another embodiment of the invention, a first partition plate 450 is arranged at one side of the refining furnace 400 close to the standing furnace 500, the first partition plate 450 and the inner wall of the refining furnace 400 enclose a molten copper output area 451 with an opening at the bottom, and the molten copper output area 451 is connected with a molten copper inlet of the standing furnace 500.

Still there are impurity such as oxygen, hydrogen in the copper liquid in the refining furnace 400, can directly block the copper liquid that enters into the refining furnace 400 from the mixing furnace 200 through first baffle 450, and the copper liquid flows the in-process earlier and can be stirred and abundant edulcoration by gas, and consequently the lower floor copper liquid that is close to the stove 500 positions that stews is comparatively clean, takes out this part copper liquid and carries out the pipe blank casting, can guarantee the quality of pipe blank.

A second partition plate 460 is arranged on one side of the refining furnace 400 close to the mixing furnace 200, the second partition plate 460 and the inner wall of the refining furnace 400 enclose a molten copper inlet area 461 with an opening at the bottom, and inert gas and/or reducing gas is introduced into the central position of the bottom wall of the refining furnace 400. Through blockking of second baffle 460, can avoid entering into the copper liquid in the stove 500 that stews from refining furnace 400, directly flow to the below of copper liquid output area 451, second baffle 460 can cushion the copper liquid to guarantee that the copper liquid can carry out abundant deoxidization edulcoration, improve the copper liquid quality.

Under the blocking of the first partition plate 450 and the second partition plate 460, gas is generated in the area between the two partition plates, so that the copper liquid output area 451 and the copper liquid inlet area 461 are not affected, sufficient oxygen removal is ensured, and the quality of the copper liquid is improved as much as possible.

Referring to fig. 3, in another embodiment of the present invention, specifically:

the seven-flow horizontal continuous casting equipment comprises two standing furnaces 500, wherein the two standing furnaces 500 are connected with the same refining furnace 400, the two standing furnaces 500 are respectively connected with one seven-flow continuous casting furnace 600, and the standing furnace 500 needs a certain time for treating the copper liquid, so that when one standing furnace 500 is treating the copper liquid, the other seven-flow continuous casting furnace 600 connected with the standing furnace 500 performs tube blank casting, after the tube blank casting is completed, the previous standing furnace 500 completes the treatment of the copper liquid, the tube blank casting can be continuously performed, and the tube blank can be continuously produced.

The seven-flow continuous casting furnace 600 comprises a casting furnace, wherein an integral crystallizer capable of casting seven hollow casting blanks simultaneously is arranged on a front panel of the casting furnace, a double-roller type traction machine and a synchronous sawing machine capable of simultaneously drawing the seven casting blanks are arranged at the front end of the crystallizer, a motor drives a traction roller on the traction machine to rotate, a traction rod is driven to pull copper water out of the crystallizer to be cast into the hollow casting blanks through the crystallizer, the traction is continued, and the copper water is cut off to the length required by the process through the on-line synchronous sawing machine.

And after the sawing is finished, the hollow copper casting blank tissues are transferred to a weighing platform for automatic weighing and coding, and the weighed hollow casting blank is conveyed to the next procedure after being coded.

Referring to fig. 2, in another embodiment of the present invention, a plurality of baffles 210 are arranged in the mixing furnace 200 at intervals up and down to form a zigzag copper liquid channel.

The copper blocks located in the shaft furnace 100 have a high content of impurities, part of which are not dissolved in the copper bath and which can therefore be removed by physical removal of impurities. The plurality of baffle plates 210 arranged at intervals up and down are arranged in the mixing furnace 200, when the molten copper flows in the mixing furnace 200, the molten copper is continuously contacted with the baffle plates 210, and the flow path of the molten copper is in a shape fluctuating up and down in the transverse direction, so that part of impurities in the molten copper can be blocked by the baffle plates 210 and cannot continuously flow into the refining furnace 400, and the impurities which are not melted in the molten copper and enter the refining furnace 400 are eliminated through the matching of the plurality of baffle plates 210.

While the invention has been described with reference to specific embodiments thereof, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in many different forms without departing from the spirit and scope of the invention as set forth in the following claims. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims (10)

1. Seven-stream horizontal continuous casting equipment, characterized by comprising:

a shaft furnace for melting copper material; and the number of the first and second groups,

the refining furnace is used for refining molten copper; and the number of the first and second groups,

the mixing furnace is connected with the shaft furnace and the refining furnace, is used for mixing molten copper and phosphorus copper, and is provided with a phosphorus copper adding port; and the number of the first and second groups,

the standing furnace is connected with the refining furnace and is used for deeply melting slag; and the number of the first and second groups,

the seven-strand continuous casting furnace is connected with the standing furnace and is used for casting seven casting blanks simultaneously;

wherein, the refining furnace includes the furnace body, locates the gas blowing device of furnace body below, the cavity diapire of furnace body is equipped with the brick of blowing, gas blowing device sees through the brick of blowing to blow in inert gas and/or reducing gas in the furnace body, be equipped with air inlet unit on the shaft furnace for let in the mist including air and gas in to the shaft furnace, still including connecting air inlet unit's detection device and adjusting device, detection device is used for detecting mist's composition proportion in order to control adjusting device adjusts the mist composition proportion, keeps reducing atmosphere in the shaft furnace.

2. The seven-strand horizontal continuous casting equipment according to claim 1, wherein a phosphor copper feeder is connected to the phosphor copper feeding port, the phosphor copper feeder comprises a storage bin and a discharge channel connected with the phosphor copper feeding port, and a rotary feeding disc with a plurality of storage areas is arranged between the storage bin and the discharge channel.

3. The seven-stream horizontal continuous casting equipment according to claim 2, wherein the rotary feeding plate comprises a first fixed plate, a second fixed plate and a rotary plate rotatably installed between the first fixed plate and the second fixed plate, a feeding port connected with the material storage barrel is formed in the first fixed plate, a discharging port connected with the discharging channel is formed in the second fixed plate, and the plurality of material storage areas are arranged on the rotary plate and are in a rectangular array.

4. The seven-strand horizontal continuous casting equipment according to claim 3, wherein a weigher is further arranged in each storage area, and an electromagnetic switch for controlling phosphorus copper to enter the storage areas is arranged below the storage barrels.

5. The seven-flow horizontal continuous casting apparatus according to any one of claims 1 to 4, wherein a plurality of baffles are arranged in the mixing furnace at intervals up and down to form a tortuous copper liquid channel.

6. The seven-flow horizontal continuous casting equipment according to any one of claims 1 to 4, wherein a first partition plate is arranged on one side of the refining furnace close to the standing furnace, the first partition plate and the inner wall of the refining furnace enclose a copper liquid output area with an opening at the bottom, and the copper liquid output area is connected with a copper liquid inlet of the standing furnace.

7. The seven-strand horizontal continuous casting equipment according to any one of claims 1 to 4, wherein a second partition plate is arranged on one side of the refining furnace close to the mixing furnace, the second partition plate and the inner wall of the refining furnace enclose a copper liquid inlet area with an opening at the bottom, and the inert gas and/or the reducing gas are/is introduced into the central position of the bottom wall of the refining furnace.

8. The seven-stream horizontal continuous casting apparatus according to any one of claims 1 to 4, wherein the air inlet means comprises a plurality of air inlets provided in the vertical direction of the shaft furnace, the air inlets connecting a gas pipe and a gas blow pipe.

9. The seven-stream horizontal continuous casting apparatus according to claim 8, wherein the adjusting means comprises an intake pipe connected to an intake port, intake valves provided at the gas pipe and the blowing pipe, and the detecting means is connected to the intake pipe.

10. The seven-strand horizontal continuous casting apparatus according to any one of claims 1 to 4, comprising two standing furnaces connected to the same refining furnace, wherein the two standing furnaces are respectively connected to one seven-strand continuous casting furnace.

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