CN108518981A - An electrolytic aluminum aluminum liquid mixing furnace - Google Patents

Abstract

The invention discloses a kind of electrolytic aluminium molten aluminum holding furnaces, including operating platform, outer fire door opening/closing system, range hood, furnace body, blender and oil combustion gun, the operating platform, outer fire door opening/closing system, range hood and oil combustion gun are set to the side of furnace body, it is set on furnace body to the operating platform, outer fire door opening/closing system and range hood homonymy, the oil combustion gun is located at the other side of furnace body, and the blender is set to the lower end of furnace body.The configuration of the present invention is simple, door structure liner use full casting material form, stir and skim and is convenient and efficient, facilitate repair；Vertical-type door structure, reduces floor space, increases burner hearth usable floor area, is effectively improved the obturation effect and heat-insulating property of fire door, reduces burnup, has stronger practicability.

Description

An electrolytic aluminum aluminum liquid mixing furnace

technical field

The invention relates to the technical field of mixing furnaces, in particular to a mixing furnace for electrolytic aluminum and molten aluminum.

Background technique

In the aluminum liquid mixing and refining process in the aluminum production process, operations such as stirring, slag removal, and addition of other metal elements are required for the melt in the molten aluminum mixing furnace bath. Most of the existing fixed electric heating molten aluminum mixing furnaces are integral structures, that is, the melting pool, furnace wall and furnace roof are connected as one, while the electric heating element is placed on the furnace roof, and the side wall of the mixing furnace, that is, the furnace wall is installed. There are one or more furnace doors. When performing stirring operation, open the furnace door, and use a special slag removal vehicle to extend the operating arm from the furnace door into the mixing furnace to stir the melt in the molten pool. The method of stirring with a hand-held instrument by workers has been gradually eliminated due to its high risk and high work intensity. For the operation of the mixer truck operating arm, it is necessary to preset a large enough space in the furnace, and build a furnace wall on the molten pool, so that the distance between the furnace roof and the molten pool will be enlarged, so that the distance between the electric heating element on the furnace top and the melt in the molten pool will be increased. The distance is increased, which reduces the heat radiation efficiency and increases the energy consumption of the mixing furnace.

The traditional mixing furnace needs to be equipped with a mixer truck separately. The mixer truck is expensive and requires a highly skilled driver to operate full-time, which increases the capital investment of the factory, and at the same time, safety accidents are prone to occur during mixing. In addition to the above-mentioned complicated mixing operation, the existing mixing furnace often uses cylinders as the mixing furnace door. The power source for opening and closing, for the hybrid furnace, due to its high temperature, reduces the service time of the cylinder, or even damages the cylinder, which increases the cost of replacing the cylinder for the enterprise. Most of the existing furnace doors use inclined furnaces The door, the airtight effect is not good, the thermal insulation performance is poor, and the furnace door occupies a large area, and the effective area of the furnace is small.

Contents of the invention

The invention provides an electrolytic aluminum-liquid mixed furnace to solve the above-mentioned deficiencies in the prior art. The inner lining of the furnace door structure is in the form of full casting material, which is convenient for stirring and slag removal, and convenient for maintenance; the vertical furnace door structure reduces the It covers an area, increases the usable area of the furnace, effectively improves the sealing effect and thermal insulation performance of the furnace door, reduces fuel consumption, and has strong practicability.

In order to realize the purpose of the present invention, it is proposed to adopt the following technologies:

An electrolytic aluminum molten aluminum mixed furnace, comprising an operation platform, an outer furnace door opening and closing system, a smoke hood, a furnace body, a stirrer and a fuel gun, the operating platform, an outer furnace door opening and closing system, a smoke hood and a fuel gun device On one side of the furnace body, the operation platform, the outer furnace door opening and closing system and the smoke hood are arranged on the same side of the furnace body, the fuel gun is located on the other side of the furnace body, and the agitator is arranged on the furnace body the lower end;

The upper end of the operating platform is provided with a lower locking piece for the outer furnace door;

The opening and closing system of the outer furnace door includes an outer furnace door and a support base. The upper and lower ends of the outer furnace door are provided with a number of sliding parts, and the upper end of the outer furnace door is provided with a number of steel ropes. The lower end is provided with a support frame, the lower end of the support frame is fixed on the furnace body, the upper end of the support frame is provided with a support platform, and the support platform is provided with an opening and closing power mechanism, and the opening and closing power mechanism includes a motor. The motor is provided with a speed reducer, the speed reducer is provided with a rotating rod, both ends of the rotating rod are provided with reels, the other end of the steel rope is arranged on the reels, and the support platform There are also several pulleys on the top, and the steel rope is set on the pulleys;

The smoke hood is arranged on the upper end of the furnace door side outside the furnace body, and the smoke hood protrudes from the furnace body, and a smoke outlet pipe is connected to the smoke hood;

The furnace body includes a furnace body shell and a furnace chamber, an asbestos insulation layer is provided inside the furnace body shell, a calcium silicate support layer is provided at the inner lower part of the asbestos insulation layer, and a calcium silicate support layer is provided at the inner upper part of the asbestos insulation layer. The inner side of the layer is provided with a diatomite insulation layer, and the inner side of the diatomite insulation layer is provided with a high-aluminum casting insulation layer,

The lower end of one side of the furnace body is provided with several aluminum outlets,

A number of fire-eye bricks are arranged in the middle of one side of the furnace body,

An electric thermocouple is arranged on the side wall of the furnace body,

The aluminum outlet and the thermocouple are located on the same side of the furnace body, the fire eye brick is located on the adjacent side of the aluminum outlet,

The inner side of the upper roof of the furnace body is provided with an upper roof insulation layer, and the upper roof insulation layer includes a ceiling brick. The number of the ceiling bricks is at least one. The upper ends of the clips are all provided with hangers, and the upper ends of the hangers are fixed on the top of the furnace body.

The side of the furnace body is provided with an inner furnace door, and the inner furnace door is located on the side of the outer furnace door.

The side of the furnace body is provided with an aluminum inlet, and the aluminum inlet is located on the opposite side of the fire eye brick,

The side of the furnace body is provided with an outer furnace door movement guide rail, the outer furnace door movement guide rail is vertically arranged on the side of the outer furnace door, and the sliding part is arranged on the outer furnace door movement guide rail;

The fuel gun is arranged in the fire brick, and the fuel gun includes an oil delivery pipe, a spray gun is arranged on one end of the oil delivery pipe, and the other end of the spray gun is located in the furnace.

Further, the furnace shell is made of high heat-resistant steel.

Further, the aluminum outlet is trumpet-shaped, and the opening at the outer end of the aluminum outlet is larger than the opening at the inner end.

Further, a fire hole is provided through the fire hole brick, and the fire hole is arranged on the fire hole brick obliquely downward, and the fuel gun is set in the fire hole.

Further, the opening of the outer end of the aluminum inlet is smaller than the opening of the inner end.

The advantage of above-mentioned technical scheme is:

1. According to the operating platform provided by the present invention, it is convenient for operators to carry out operations such as slag removal, and through the lower locking part of the outer furnace door provided on it, it can rely on the weight of the furnace door itself to ensure that the furnace door is closed by the furnace after falling. The locking part under the door is locked to improve the sealing effect and heat preservation performance of the furnace door;

2. According to the opening and closing system of the outer furnace door provided in the present invention, the opening and closing of the outer furnace door can be conveniently controlled. Since the outer furnace door is opened and closed in a lifting manner, the space occupied when the outer furnace door is opened and closed is reduced. And the power source is a motor, which can effectively improve the stability of the opening and closing of the outer furnace door, and increase the service time of the outer furnace door opening and closing system, thereby reducing the cost input of the enterprise;

3. The smoke hood provided according to the present invention can effectively absorb the smoke and dust overflowing from the outer furnace door, thereby reducing the pollution to the environment;

4. According to the unique design of the furnace body of the present invention, the heat preservation performance of the entire mixing furnace is improved, and the pollution of the mixed aluminum liquid by impurity elements is reduced. The high heat-resistant steel furnace body shell plays a role of support and protection for the entire furnace body , and high heat-resistant steel is used, which can improve the strength of the furnace body at high temperature; the asbestos insulation layer is used as the second outer layer of insulation layer to prevent heat loss, reduce fuel consumption and improve heat preservation; calcium silicate support layer , as the support layer at the lower end of the furnace body, it can support the furnace, and can also reduce the heat in the furnace to exchange heat with the earth, and improve the thermal insulation performance of the furnace body; the diatomite insulation layer is used as the thermal insulation layer of the second inner layer, It can improve the insulation effect of the furnace body and reduce heat loss; the high-aluminum casting insulation layer can effectively separate the mixed aluminum liquid from the diatomite insulation layer, and can effectively reduce the impurity content and slag content in the mixed aluminum liquid. In addition, aluminum is used as the main component of the high-alumina casting insulation layer, which reduces the pollution of other elements to the mixed aluminum liquid; the trumpet-shaped aluminum outlet can facilitate the outflow of the mixed aluminum liquid, and facilitate the sealing and flow of the mixed aluminum liquid during the production process At the same time, it is convenient to take out the plug after the aluminum liquid solidifies; the fire eye brick can be easily inserted into the fire eye gun; the thermocouple monitors the temperature change in the furnace and improves the controllability of the mixing wheel; the inner furnace door can effectively improve the heat preservation of the furnace body The effect is to prevent heat from being lost due to the lax closure of the outer furnace door; the upper top insulation layer can prevent heat from being lost from the upper top, and it is hung on the upper top to facilitate installation; the outer furnace door guide rail can be The lifting movement plays a guiding role, and at the same time improves the combination of the outer furnace door and the furnace body, and improves the heat preservation effect; the aluminum inlet can facilitate the inflow of aluminum liquid, and the small opening at the outer end is convenient for connecting with the aluminum liquid transfer device. The large opening improves the flow of molten aluminum;

5. According to the agitator provided by the present invention, its working principle is that when a direct current is passed through the coil of the agitator, a constant magnetic field will be generated in the iron core. The shape is scattered, and under the action of the rotating motor, an alternating rotating magnetic field will be generated. The magnetic field acts on the molten alloy to generate an induced current, and the magnetic field excited by the induced current interacts with the original magnetic field, so that the conductive metal liquid and the external rotating magnetic field move in the same direction, so as to achieve the purpose of stirring, so as not to open the furnace The door can complete the stirring of the mixed aluminum liquid, which improves the heat preservation and operability;

6. The fuel gun provided according to the present invention provides heat for the mixed aluminum liquid and prevents the mixed aluminum liquid from solidifying;

7. The structure of the present invention is simple, the inner lining of the furnace door structure is in the form of full casting material, the stirring and slag removal are convenient and fast, and the maintenance is convenient; the vertical furnace door structure reduces the occupied area, increases the usable area of the furnace, and effectively improves It improves the sealing effect and thermal insulation performance of the furnace door, reduces fuel consumption, and has strong practicability.

Description of drawings

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. in:

Fig. 1 shows the front view of the electrolytic aluminum and molten aluminum mixing furnace.

Fig. 2 shows a side view of the electrolytic aluminum and molten aluminum mixing furnace.

Fig. 3 shows a top view of the furnace for mixing electrolytic aluminum and molten aluminum.

Detailed ways

As shown in Figures 1 to 3, an electrolytic aluminum liquid aluminum mixing furnace includes an operating platform 1, an outer furnace door opening and closing system 2, a smoke hood 3, a furnace body 4, a stirrer 5 and a fuel gun 6, the operation The platform 1, the outer furnace door opening and closing system 2, the smoke hood 3 and the fuel gun 6 are arranged on one side of the furnace body 4, and the operating platform 1, the outer furnace door opening and closing system 2 and the smoke hood 3 are arranged on the same side of the furnace On the body 4, the fuel gun 6 is located on the other side of the body of furnace 4, and the agitator 5 is arranged at the lower end of the body of furnace 4;

The upper end of the operating platform 1 is provided with a locking member 10 under the outer furnace door;

The outer furnace door opening and closing system 2 includes an outer furnace door 20 and a support seat 24. A number of sliding parts 200 are provided at the upper and lower ends of the outer furnace door 20, and a steel rope 21 is provided at the upper end of the outer furnace door 20. A number, the lower end of the support base 24 is provided with a support frame 240, the lower end of the support frame 240 is fixed on the furnace body 4, the upper end of the support frame 240 is provided with a support platform 241, and the support platform 241 is provided with Opening and closing power mechanism 23, described opening and closing power mechanism 23 comprises motor 230, and described motor 230 is provided with speed reducer 231, and described speed reducer 231 is provided with rotating rod 232, and the two ends of described rotating rod 232 are all provided with There is a winding wheel 233, the other end of the steel rope 21 is arranged on the winding wheel 233, and a plurality of pulleys 22 are also arranged on the support platform 241, and the steel rope 21 is arranged on the pulley 22;

The smoke hood 3 is arranged on the upper end of the furnace door 20 outside the furnace body 4, and the smoke hood 3 protrudes from the furnace body 4, and the smoke hood 3 is connected with a smoke outlet pipe 30;

The furnace body 4 includes a furnace body shell 40 and a furnace 44, the inner side of the furnace body shell 40 is provided with an asbestos insulation layer 400, the inner lower part of the asbestos insulation layer 400 is provided with a calcium silicate support layer 401, and the asbestos insulation layer The upper part of the inner side of 400 and the inner side of the calcium silicate support layer 401 are provided with a diatomite insulation layer 402, and the inner side of the diatomite insulation layer 402 is provided with a high-aluminum casting insulation layer 403,

The lower end of one side of the furnace body 4 is provided with a plurality of aluminum outlets 41,

The middle part of one side of the furnace body 4 is provided with some fire bricks 42,

The side wall of the furnace body 4 is provided with a thermocouple 45,

The aluminum outlet 41 and the thermocouple 45 are located on the same side of the furnace body 4, and the fire eye brick 42 is located on the adjacent side of the aluminum outlet 41,

The inner side of the upper roof of the body of furnace 4 is provided with an upper roof insulation layer 43, and the upper roof insulation layer 43 includes a ceiling tile 430, the number of the ceiling tile 430 is at least one, and the upper end of the ceiling tile 430 is provided with a ceiling There are several clips 431, and the upper ends of the ceiling clips 431 are all provided with a hanger 432, and the upper ends of the hanger 432 are fixed on the top of the furnace body 4,

The side of the furnace body 4 is provided with an inner furnace door 47, and the inner furnace door 47 is located at the outer furnace door 20 side,

The side of the furnace body 4 is provided with an aluminum inlet 46, and the aluminum inlet 46 is located on the opposite side of the fire brick 42,

The side of the furnace body 4 is provided with an outer furnace door moving guide rail 48, the outer furnace door moving guide rail 48 is vertically arranged on the outer furnace door 20 side, and the sliding part 200 is arranged on the outer furnace door moving guide rail 48 ;

The fuel gun 6 is arranged in the fire brick 42 , and the fuel gun 6 includes a fuel delivery pipe 60 , one end of the fuel delivery pipe 60 is provided with a spray gun 61 , and the other end of the spray gun 61 is located in the furnace 44 .

The furnace shell 40 is made of high heat-resistant steel.

The aluminum outlet 41 is trumpet-shaped, and the opening at the outer end of the aluminum outlet 41 is larger than the opening at the inner end.

The fire brick 42 is provided with a fire hole 420 , the fire hole 420 is arranged on the fire brick 42 obliquely downward, and the fuel gun 6 is set in the fire hole 420 .

The outer opening of the aluminum inlet 46 is smaller than the inner opening.

When the present invention is in use, first use a tapered plug to block the aluminum outlet 41, pour aluminum liquid from the aluminum inlet 46, and use the fuel gun 6 to heat the aluminum liquid in the furnace to prevent it from solidifying until it is full of aluminum liquid. Start the motor 230, so that the motor 230 drives the reducer 231 to run, and the operation of the reducer 231 drives the rotation of the rotating rod 232, and the rotating rod 232 finally makes the steel rope 21 wind around the reel 233, and the steel rope 21 makes the outer furnace door 20 upward to open the outer furnace door 20; then the agitator 5 is turned on to carry out slag removal, batching, degassing and other process operations on the molten aluminum in the furnace 44, and observe the temperature change through the thermocouple 45 until the production process requirements are met.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (5)

1. a kind of electrolytic aluminium molten aluminum holding furnace, which is characterized in that including operating platform（1）, outer fire door opening/closing system（2）, smoking Cover（3）, furnace body（4）, blender（5）And oil combustion gun（6）, the operating platform（1）, outer fire door opening/closing system（2）, range hood （3）And oil combustion gun（6）Set on furnace body（4）Side, the operating platform（1）, outer fire door opening/closing system（2）And range hood （3）It is set to furnace body to homonymy（4）On, the oil combustion gun（6）Positioned at furnace body（4）Other side, the blender（5）Set on stove Body（4）Lower end；

The operating platform（1）Upper end is equipped with locking member under outer fire door（10）；

The outer fire door opening/closing system（2）Including outer fire door（20）And support base（24）, the outer fire door（20）Upper and lower ends It is equipped with sliding part（200）It is several, the outer fire door（20）Upper end be equipped with steel cable（21）It is several, the support base（24）Under End is equipped with supporting rack（240）, support frame as described above（240）Lower end be fixed on furnace body（4）On, support frame as described above（240）Upper end Equipped with support platform（241）, the support platform（241）It is equipped with and opens and closes actuating unit（23）, the keying actuating unit （23）Including motor（230）, the motor（230）It is equipped with speed reducer（231）, the speed reducer（231）It is equipped with rotating bar （232）, the rotating bar（232）Both ends be equipped with reel（233）, the steel cable（21）The other end be set to reel （233）On, the support platform（241）On be additionally provided with pulley（22）It is several, the steel cable（21）Set on pulley（22）On；

The range hood（3）Set on furnace body（4）Outer fire door（20）The upper end of side, and the range hood（3）Stretch out in furnace body（4）, The range hood（3）On be connected with pipe（30）；

The furnace body（4）Including furnace body shell（40）And burner hearth（44）, the furnace body shell（40）Inside is equipped with asbestos insulating layer （400）, the asbestos insulating layer（400）Lower inside is equipped with calcium silicates supporting layer（401）, the asbestos insulating layer（400）It is interior Upper lateral part and calcium silicates supporting layer（401）Inside is equipped with diatomite insulating layer（402）, the diatomite insulating layer（402）It is interior Side is equipped with high alumina casting insulating layer（403）,

The furnace body（4）Side lower end is equipped with aluminium flowing-out mouth（41）It is several,

The furnace body（4）One middle side part is equipped with pinkeye brick（42）It is several,

The furnace body（4）Side wall is equipped with electroheat pair（45）,

The aluminium flowing-out mouth（41）And electroheat pair（45）Positioned at furnace body（4）Homonymy, the pinkeye brick（42）Positioned at aluminium flowing-out mouth（41）Phase Adjacent side,

The furnace body（4）Upper top on the inside of be equipped with upper closure insulation（43）, the upper closure insulation（43）Including suspended roof brick （430）, the suspended roof brick（430）Quantity be at least one piece, the suspended roof brick（430）Upper end equipped with furred ceiling press from both sides（431）If It is dry, the furred ceiling folder（431）Upper end be equipped with hanging（432）, the hanging（432）Upper end be fixed on furnace body（4）Upper top,

The furnace body（4）Side be equipped with interior fire door（47）, the interior fire door（47）Positioned at outer fire door（20）Side,

The furnace body（4）Side be equipped with into aluminium mouth（46）, described into aluminium mouth（46）Positioned at pinkeye brick（42）Opposite side On,

The furnace body（4）Side be equipped with outer fire door motion guide rail（48）, the outer fire door motion guide rail（48）It is set to vertically Outer fire door（20）Side, and the sliding part（200）Set on outer fire door motion guide rail（48）On；

The oil combustion gun（6）Set on pinkeye brick（42）In, the oil combustion gun（6）Including petroleum pipeline（60）, the petroleum pipeline（60） One end be equipped with spray gun（61）, the spray gun（61）The other end be located at burner hearth（44）It is interior.

2. electrolytic aluminium molten aluminum holding furnace according to claim 1, which is characterized in that the furnace body shell（40）By high heat resisting steel It is made.

3. electrolytic aluminium molten aluminum holding furnace according to claim 1, which is characterized in that the aluminium flowing-out mouth（41）To be horn-like, And the aluminium flowing-out mouth（41）Opening of the opening of outer end more than inner end.

4. electrolytic aluminium molten aluminum holding furnace according to claim 1, which is characterized in that the pinkeye brick（42）Through equipped with fire Eye（420）, the pinkeye（420）Diagonally downward be set to pinkeye brick（42）On, and the oil combustion gun（6）Set on pinkeye（420） In.

5. electrolytic aluminium molten aluminum holding furnace according to claim 1, which is characterized in that described into aluminium mouth（46）Outer end opening Less than interior end opening.