CN118347288A - Smelting device and molten liquid impurity removal method - Google Patents

Abstract

The invention provides a smelting device and a molten liquid impurity removing method, wherein the smelting device comprises: the standing furnace is provided with a feed inlet, a smelting cavity, a pure liquid discharge port and an impurity molten liquid discharge port; the temperature adjusting component is arranged on the standing furnace and is used for adjusting the temperature of the standing furnace; the separation part is arranged in the smelting cavity and divides the smelting cavity into a first cavity and a second cavity which are mutually independent, the first cavity is positioned above the second cavity, the first cavity is communicated with the pure liquid discharge port, the second cavity is communicated with the impurity molten liquid discharge port, and a communication channel is formed between the separation part and the standing furnace; the blocking part is movably arranged in the smelting cavity and blocks or opens the communication channel so as to communicate or block the first cavity and the second cavity. The scheme can solve the problems that in the prior art, an aluminum melt and an iron-rich deposition layer are separated in a pouring smelting furnace mode, the contradictory relation between the iron removal rate and the aluminum fluidity cannot be overcome, the iron removal rate is low, and continuous production of waste aluminum iron removal elements cannot be realized.

Description

Smelting device and molten liquid impurity removal method

Technical Field

The invention relates to the technical field of smelting, in particular to a smelting device and a molten liquid impurity removal method.

Background

With the vigorous development of Chinese economy, the reserve of waste aluminum in society is increased remarkably, and the recovery amount of waste aluminum per year can reach tens of millions of tons. Under the promotion of the national double-carbon policy, the industry needs to reduce the use amount of electrolytic aluminum with high carbon emission and increase the use amount of secondary aluminum with low carbon emission.

During the process of recycling the waste aluminum to prepare the reclaimed aluminum, some impurities are introduced. If improperly treated, these impurities will reduce the quality of the aluminum alloy. For example, impurities such as gas and slag can be solved by means of slag breaking, filtering and the like. However, the impurity iron, after entering the melt, reacts with aluminum to form coarse brittle compounds, severely affecting the formability of the aluminum alloy. Therefore, to ensure efficient recovery of scrap aluminum, the problem of impurity iron removal must be addressed.

In the existing aluminum melt iron removal technology, the gravity sedimentation method of adding flux is the simplest principle, namely, in the smelting process, the added flux reacts with iron to form a coarse phase, the density of the coarse phase is larger than that of aluminum liquid, and the coarse phase can be sedimentated to the bottom of the furnace, so that the iron is separated from the pure aluminum liquid.

In the existing aluminum melt iron removal technology, the Fe-rich phase is separated by pouring the aluminum melt through a smelting furnace, and the method is simpler. Since the solid solubility of Fe content in the aluminum melt decreases with decreasing temperature, the lower the temperature from the beginning of precipitation of Fe-rich phase, the more Fe-rich phase precipitates and the higher the Fe removal rate, but the lower the melt temperature, the higher the viscosity, resulting in poorer fluidity of the aluminum melt, and reduced the possibility of complete dumping of the pure aluminum melt. In addition, in order to prevent the deposited layer of the Fe-rich phase from being poured out, the pouring angle of the smelting furnace is not large, which results in that the purified aluminum melt cannot be poured out completely and the residual amount is large. Moreover, after each pouring, a great deal of time is required to clean the iron-rich deposit layer, the industrial continuous production effect is poor, and the feasibility of application is not realized. Therefore, the Fe removal rate and the fluidity of the aluminum liquid are two contradictory indexes. If the aluminum liquid can be separated from the Fe-rich phase at the bottom of the furnace, the aluminum liquid needs to have higher temperature to ensure the fluidity, but the temperature is high, and the solid solubility of Fe element in the aluminum liquid is also high, namely the Fe removal rate is low.

In conclusion, the aluminum melt and the iron-rich phase deposition layer are separated by pouring the smelting furnace, so that the contradiction between the iron removal rate and the fluidity of the aluminum melt can not be overcome, the iron removal rate is low, and the continuous production of the iron-removing elements of the waste aluminum can not be realized.

Disclosure of Invention

The invention provides a smelting device and a molten liquid impurity removal method, which are used for solving the problems that in the prior art, an aluminum melt and an iron-rich deposition layer are separated by pouring a smelting furnace, the contradictory relation between the iron removal rate and the aluminum fluidity cannot be overcome, the iron removal rate is low, and the continuous production of waste aluminum iron removal elements cannot be realized.

According to one aspect of the invention there is provided a smelting apparatus comprising: the standing furnace is provided with a feed inlet, a smelting cavity, a pure liquid discharge port and an impurity molten liquid discharge port; the temperature adjusting component is arranged on the standing furnace and is used for adjusting the temperature of the standing furnace; the separation part is arranged in the smelting cavity and divides the smelting cavity into a first cavity and a second cavity which are mutually independent, the first cavity is positioned above the second cavity, the first cavity is communicated with the pure liquid discharge port, the second cavity is communicated with the impurity molten liquid discharge port, a communication channel is formed between the separation part and the standing furnace, and the first cavity is communicated with the second cavity through the communication channel; the blocking part is movably arranged in the smelting cavity and used for blocking or opening the communication channel so as to communicate or block the first cavity and the second cavity.

Further, the height of the baffle part in the smelting cavity is adjustable.

Further, the smelting apparatus further includes: the driving end of the first driving part is arranged in the smelting cavity and is in driving connection with the baffle part so as to enable the baffle part to ascend or descend.

Further, the smelting apparatus further includes: the driving end of the second driving part is arranged in the smelting cavity and is in driving connection with the plugging part, so that the plugging part plugs or opens the communication channel.

Further, the stationary furnace includes: the furnace body is provided with a feed inlet, a smelting cavity and an impurity molten liquid discharge port, and the feed inlet is arranged at the top end of the furnace body; the furnace cover is detachably arranged at the feed inlet of the furnace body, and the first driving part and the second driving part are respectively arranged on the furnace cover.

Further, the smelting apparatus further includes: the smelting furnace is used for smelting aluminum materials and is provided with a mixed liquor discharge port which is communicated with a feed port of the standing furnace; the heat preservation furnace is provided with a pure liquid inlet which is communicated with a pure liquid discharge port of the standing furnace; the extraction assembly is provided with a liquid inlet pipe and a liquid outlet pipe which are mutually communicated, the liquid inlet pipe extends into the first cavity through the pure liquid discharge port, and the liquid outlet pipe is communicated with the pure liquid inlet; the slag box is provided with an impurity molten liquid inlet which is communicated with an impurity molten liquid discharge port.

Further, a plurality of standing furnaces are arranged, the plurality of standing furnaces are arranged in parallel, the feed inlets of the plurality of standing furnaces are respectively communicated with the mixed liquor discharge ports of the smelting furnaces, and the impurity melt discharge ports of the plurality of standing furnaces are respectively communicated with the impurity melt inlet of the slag box.

Further, the temperature regulation assembly includes: the condenser assembly is arranged on the furnace wall of the standing furnace and is used for cooling the furnace wall of the standing furnace; and the heating component is arranged on the furnace wall of the standing furnace and is used for heating the furnace wall of the standing furnace.

According to an aspect of the present invention, there is provided a melt impurity removal method, the melt impurity removal method being applied to the smelting apparatus described above, the melt impurity removal method comprising: step 1: pouring the mixed melt and the impurity precipitation agent into a smelting cavity of the standing furnace through a feed inlet of the standing furnace respectively; step 2: the temperature adjusting component of the standing furnace is adjusted, so that the mixed molten liquid in the standing furnace is reduced to a first preset temperature T1 at a preset cooling speed of 0.01 ℃/s to 3 ℃/s, the first preset temperature T1 is set at 560 ℃ to 760 ℃, and the first preset time is kept for 0.5h to 2h at the first preset temperature T1, so that an impurity deposition layer is separated out and is settled to the bottom of the standing furnace to form the impurity deposition layer; step 3: placing a baffle part of the standing furnace in a smelting cavity of the standing furnace and above the impurity deposition layer; step 4: the position of the blocking part is regulated so that the blocking part blocks a circulation channel of the standing furnace; step 5: a temperature adjusting component of the standing furnace is adjusted, the standing furnace is heated to a second preset temperature T2 at a preset heating speed of 0.01 ℃/s to 3 ℃/s, and the second preset temperature T2 is kept for a second preset time of 0.5h to 2h, so that pure liquid and impurity melt are respectively in a molten state, wherein T2-T1 is more than or equal to 10 ℃ and less than or equal to 100 ℃; step 6: the pure liquid is discharged from a first chamber of the holding furnace, and the impurity melt is discharged from a second chamber of the holding furnace.

Further, step 3 further includes: measuring the volume V of the pure liquid; the step 6 comprises the following steps: the volume of the purified liquid in the first chamber in the discharging stationary furnace is V.

Further, step 3 further includes: the height h of the impurity deposit layer is measured, and a barrier portion is placed according to the height h.

Further, in step 6, the pure liquid in the standing furnace is discharged first, and then the impurity melt is discharged.

Further, in step 4, the barrier is lowered at a preset lowering speed of 0.1mm/s to 100mm/s until the barrier moves to a preset height.

By applying the technical scheme of the invention, the pure liquid and the impurity melt in the mixed melt can be effectively separated. Specifically, the mixed molten liquid is contained in the standing furnace, the mixed molten liquid and the impurity precipitation agent are added into the smelting cavity, so that the first cavity and the second cavity are communicated with each other, the temperature adjusting assembly is adjusted, impurities in the mixed molten liquid form a deposition layer, the baffle part is placed above the deposition layer, the communicating channel is blocked through the blocking part, and the first cavity and the second cavity are isolated from each other; and then heating the standing furnace through a temperature adjusting assembly, remelting the deposition layer, and respectively discharging the molten liquid in the first cavity and the second cavity. Under the baffle effect of baffle portion and shutoff portion, impurity in the second cavity can not enter into in the first cavity, has guaranteed the purity of pure solution, so sets up, is convenient for realize the emission to pure liquid and impurity melt. In the traditional technical scheme, after the impurities form a deposition layer, pure liquid is discharged in a pouring and standing furnace mode, in order to ensure that the deposition layer is deposited on the furnace bottom, the furnace temperature of the standing furnace is required to be properly reduced, but after the furnace temperature is reduced, the mobility of the pure liquid is poor, and the controllability of the pouring process is poor; meanwhile, in the process of pouring the standing furnace, part of impurity melt flows back into the pure liquid, and the purity of the pure liquid is affected. And after pouring the pure liquid, the standing furnace needs to be further cooled so as to remove the impurity deposition layer, or the standing furnace is heated again so as to re-melt the deposition layer and then discharge the impurity melt. Compared with the traditional technical scheme, the arrangement of the scheme can effectively separate the pure liquid from the bottom impurity deposition layer, overcomes the contradictory relation between the impurity removal rate and the flowability of the pure liquid, can maximally improve the impurity removal rate, can enable the pure liquid to have good flowability, and realizes continuous production of the impurity removal process.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

Fig. 1 shows a schematic structural diagram of a stationary furnace, a baffle part and a plugging part in cooperation, which are provided by the embodiment of the invention;

FIG. 2 shows a schematic structural diagram of a smelting apparatus provided by an embodiment of the present invention;

Fig. 3 shows a top view of a smelting apparatus provided in an embodiment of the invention.

Wherein the above figures include the following reference numerals:

10. standing the furnace;

101. A feed inlet;

102. A smelting chamber; 1021. A first chamber; 1022. A second chamber;

103. a purified liquid discharge port; 104. An impurity melt discharge port;

11. a furnace body; 12. A furnace cover;

20. A barrier section; 201. a communication passage;

30. A blocking part;

40. a temperature regulating assembly; 41. A condenser assembly; 42. A heating assembly;

50. A first driving section; 51. A first gear; 52. A first rack;

60. A second driving section; 61. A second gear; 62. A second rack;

01. a smelting furnace;

02. a holding furnace;

03. an extraction assembly; 031. a liquid inlet pipe; 032. a liquid outlet pipe; 033. a pump body;

04. A slag box;

05. And (5) a casting machine.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1, an embodiment of the present invention provides a smelting apparatus including a stationary furnace 10, a barrier portion 20, a blocking portion 30, and a temperature adjustment assembly 40. Wherein the stationary furnace 10 is provided with a feed port 101, a smelting chamber 102, a purified liquid discharge port 103 and an impurity melt discharge port 104. The baffle part 20 is arranged in the smelting cavity 102, the smelting cavity 102 is divided into a first chamber 1021 and a second chamber 1022 which are mutually independent by the baffle part 20, the first chamber 1021 is positioned above the second chamber 1022, the first chamber 1021 is communicated with the pure liquid discharge port 103, the second chamber 1022 is communicated with the impurity molten liquid discharge port 104, a communication channel 201 is formed between the baffle part 20 and the standing furnace 10, and the first chamber 1021 and the second chamber 1022 are communicated through the communication channel 201. The blocking portion 30 is movably disposed in the smelting chamber 102, and the blocking portion 30 is used to block or open the communication channel 201 to communicate or shut off the first chamber 1021 and the second chamber 1022. The temperature adjusting assembly 40 is provided on the stationary furnace 10, and the temperature adjusting assembly 40 is used for adjusting the temperature of the stationary furnace 10.

By applying the technical scheme of the invention, the pure liquid and the impurity melt in the mixed melt can be effectively separated. Specifically, the aluminum liquid and the impurity iron element in the aluminum liquid are described as an example, the pure liquid is the aluminum liquid, and the impurity melt is the iron-rich element melt. The standing furnace is used for containing mixed molten liquid, the mixed molten liquid and an impurity precipitation agent are added into the smelting cavity 102, so that the first chamber 1021 and the second chamber 1022 are communicated with each other, the temperature adjusting assembly 40 is adjusted, impurities in the mixed molten liquid form a deposition layer, the baffle part 20 is placed above the deposition layer, the communication channel 201 is plugged through the plugging part 30, and the first chamber 1021 and the second chamber 1022 are isolated from each other; the temperature of the standing furnace 10 is then raised by the temperature adjusting assembly 40, the deposited layer remelts, and the pure liquid in the first chamber 1021 and the molten liquid in the second chamber 1022 are discharged respectively. In the process of discharging the pure solution, under the barrier action of the barrier part 20 and the blocking part 30, the impurity melt in the second chamber 1022 does not enter the first chamber 1021, and the purity of the pure solution is ensured. In the traditional technical scheme, after the impurities form a deposition layer, pure liquid is discharged in a pouring and standing furnace mode, in order to ensure that the deposition layer is deposited on the furnace bottom, the furnace temperature of the standing furnace is required to be properly reduced, but after the furnace temperature is reduced, the mobility of the pure liquid is poor, and the controllability of the pouring process is poor; meanwhile, in the process of pouring the standing furnace, part of impurity melt flows back into the pure liquid, and the purity of the pure liquid is affected. And after pouring the pure liquid, the standing furnace needs to be further cooled so as to remove the impurity deposition layer, or the standing furnace is heated again so as to re-melt the deposition layer and then discharge the impurity melt. Compared with the traditional technical scheme, the arrangement of the scheme can effectively separate the pure liquid from the bottom impurity deposition layer, overcomes the contradictory relation between the impurity removal rate and the flowability of the pure liquid, can maximally improve the impurity removal rate, can enable the pure liquid to have good flowability, and realizes continuous production of the impurity removal process.

The specific form of the communication passage 201 is not limited in this embodiment.

In some embodiments of the present solution, a communication channel 201 is formed between the outer circumferential surface of the barrier 20 and the inner sidewall of the stationary furnace 10.

In the embodiment of the present embodiment, the communication channel 201 is disposed on the barrier portion 20, and the communication channel 201 is disposed through the thickness of the barrier portion 20. With this arrangement, the blocking portion 20 is facilitated to realize communication and blocking of the communication passage 201.

In an embodiment of the present solution, the height of the barrier 20 within the smelting chamber 102 is adjustable. By the arrangement, the device can be suitable for different smelting operations, and the adaptability of the device is improved.

Further, in this embodiment, the peripheral surface of the baffle 20 is in contact with the inner wall of the stationary furnace 10. By this arrangement, the position of the barrier portion 20 can be adjusted, and the barrier effect of the barrier portion 20 can be improved.

Further, the smelting device further comprises a first driving part 50, wherein the driving end of the first driving part 50 is arranged in the smelting cavity 102, and the first driving part 50 is in driving connection with the baffle part 20 so as to enable the baffle part 20 to ascend or descend. The first driving portion 50 is provided to enable the position of the barrier portion 20 to be adjusted.

Further, the smelting device further comprises a second driving part 60, wherein the driving end of the second driving part 60 is arranged in the smelting cavity 102, and the second driving part 60 is in driving connection with the plugging part 30 so as to enable the plugging part 30 to plug or open the communication channel 201. By the arrangement, the position of the plugging portion 30 can be adjusted in a lifting manner, so that the plugging portion 30 can be plugged or opened to the communication channel 201 conveniently.

In the embodiment of the present embodiment, the stationary furnace 10 includes a furnace body 11 and a furnace cover 12. Wherein, furnace body 11 is provided with feed inlet 101, smelting chamber 102 and impurity melt discharge mouth 104, and feed inlet 101 sets up on the top of furnace body 11. The furnace cover 12 is detachably arranged at a feed inlet 101 of the furnace body 11, and the first driving part 50 and the second driving part 60 are respectively arranged on the furnace cover 12. The furnace lid 12 is opened before the mixed melt is charged, so that the mixed melt is discharged into the stationary furnace 10. After the impurities are deposited, the furnace cover 12 is covered, meanwhile, the driving end of the first driving part 50 and the driving end of the second driving part 60 respectively penetrate into the first cavity, the position of the baffle part 20 is adjusted through the first driving part 50, the baffle part 20 is positioned above the deposited layer, the communication channel 201 is in an open state, pure liquid enters the first cavity 1021 through the communication channel 201, the position of the blocking part 30 is adjusted through the second driving part 60, the blocking part 30 blocks the communication channel 201, the baffle part 20 and the blocking part 30 separate the pure liquid on the upper layer from the impurity layer on the lower layer, the furnace temperature of the standing furnace is adjusted through the temperature adjusting component 40, and after the pure liquid and the impurities on the lower layer have good fluidity respectively, the pure liquid and the impurity melt are discharged.

The specific form of the first driving part 50 is not limited in this embodiment.

In the embodiment of the present embodiment, the first driving part 50 includes a first driving member, a first gear 51, and a first rack gear 52. The furnace cover 12 is provided with a first penetrating hole, the first rack 52 is vertically arranged, the bottom end of the first rack 52 penetrates through the furnace cover 12 through the first penetrating hole and is fixedly connected with the baffle part 20, the first gear 51 is rotatably arranged on the top surface of the furnace cover 12, the axial direction of the first gear 51 is in the horizontal direction, the first gear 51 is meshed with the first rack 52, and the first driving piece is in driving connection with the first gear 51 so as to enable the first gear 51 to rotate.

In other embodiments of the present disclosure, the first driving portion 50 may include a structural form configured as a telescopic member, such as a telescopic cylinder or a telescopic cylinder.

In the embodiment of the present embodiment, the second driving part 60 includes a second driving member, a second gear 61, and a second rack gear 62. The furnace cover 12 is provided with a second penetrating hole, the second rack 62 is vertically arranged, the bottom end of the second rack 62 penetrates through the furnace cover 12 through the first penetrating hole and is fixedly connected with the plugging part 30, the second gear 61 is rotatably arranged on the top surface of the furnace cover 12, the axis direction of the second gear 61 is in the horizontal direction, the second gear 61 is meshed with the second rack 62, and the second driving piece drives the second gear 61 to be in driving connection so as to enable the second gear 61 to rotate.

As shown in fig. 1 to 3, further, the smelting apparatus further includes a smelting furnace 01, a holding furnace 02, a drawing assembly 03, and a slag box 04. Wherein, smelting furnace 01 is used for smelting the aluminum product, and smelting furnace 01 is provided with mixed liquor discharge port, and mixed liquor discharge port communicates with the feed inlet 101 of standing furnace 10. The holding furnace 02 is provided with a purified liquid inlet, and the purified liquid inlet is communicated with a purified liquid discharge port 103 of the standing furnace 10. The extraction assembly 03 is provided with a liquid inlet tube 031 and a liquid outlet tube 032 which are mutually communicated, the liquid inlet tube 031 extends into the first chamber 1021 through the pure liquid outlet 103, and the liquid outlet tube 032 is communicated with the pure liquid inlet. The slag box 04 is provided with an impurity melt inlet, which communicates with the impurity melt outlet 104. In the smelting process, firstly, aluminum materials are added into a smelting furnace 01 for smelting, and the smelted aluminum liquid and impurity mixture is discharged to a standing furnace 10 through a mixed liquid discharge port. Subsequently, the mixture is separated in the stationary furnace 10, specifically, the pure aluminum liquid and the iron-rich phase impurities are separated under the action of the temperature adjusting assembly 40, the baffle 20 and the blocking portion 30, the pure aluminum liquid is in the first chamber 1021, and the iron-rich phase melt is in the second chamber 1022. The extraction subassembly 03 still includes the pump body 033, the feed liquor mouth intercommunication feed liquor pipe 031 of pump body 033, the drain pipe 032 is linked together to the liquid outlet of pump body 033, in the feed liquor pipe 031 of extraction subassembly 03 stretches into first cavity 1021, the pure aluminium liquid in the stove 10 of standing is stood in the extraction to send back heat preservation stove 02 through drain pipe 032, realize the maintenance of circulation and the purity degree of aluminium liquid, later the pure aluminium liquid in the heat preservation stove 02 discharges to casting machine 05 in carrying out casting operation. The separated impurity melt flows into the slag box 04 through the impurity melt discharge port 104 for collection and subsequent processing. In the process, the method improves the aluminum smelting efficiency and the purity of aluminum liquid by optimizing the cooperative work of the smelting furnace 01, the holding furnace 02, the extraction assembly 03 and the slag box 04, reduces the energy consumption and realizes continuous production.

In the embodiment of the present embodiment, the impurity melt discharge port 104 is provided at the bottom of the stationary furnace 10, so provided, so that the discharge of the melt impurities is facilitated.

The number of the stationary furnace 10 is not limited in this embodiment. Wherein the stationary furnace 10 may be provided with one or a plurality thereof.

In the embodiment of the scheme, a plurality of standing furnaces 10 are arranged in parallel, feed inlets 101 of the plurality of standing furnaces 10 are respectively communicated with mixed liquor discharge outlets of a smelting furnace 01, and impurity melt discharge outlets 104 of the plurality of standing furnaces 10 are respectively communicated with impurity melt inlets of a slag box 04. The plurality of standing furnaces 10 work in parallel, so that the smelting furnace 01 is allowed to continuously discharge aluminum liquid, energy waste caused by waiting for standing furnace treatment is avoided, more aluminum liquid can be treated at the same time, and the efficiency of the smelting process is obviously improved; under the condition that the amount of the mixed liquid discharged from the smelting furnace is the same, the amount of the mixed liquid in the single standing furnace 10 can be reduced, and the impurity removal effect is improved. The arrangement of a plurality of static ovens 10 increases the redundancy of the whole smelting system, and even if one static oven 10 fails, other static ovens can still work continuously, thereby improving the stability and reliability of the whole smelting system. The parallel stationary furnaces 10 can be flexibly started or closed according to production requirements, so that the smelting process can be controlled and managed finely.

The specific form of the temperature adjustment assembly 40 is not limited in this embodiment.

In the embodiment of the present embodiment, the temperature adjustment assembly 40 includes a condenser assembly 41 and a heating assembly 42. Wherein, condenser subassembly 41 sets up on the oven of standing still stove 10, and condenser subassembly 41 is used for cooling down the oven of standing still stove 10. The heating assembly 42 is provided on the furnace wall of the stationary furnace 10, and the heating assembly 42 is used for heating the furnace wall of the stationary furnace 10. The condenser assembly 41 is responsible for cooling the furnace walls to maintain the proper temperature of the molten aluminum in the stationary furnace 10 and to assist in the settling and separation of impurities in the molten aluminum. Meanwhile, the heating component 42 is used for heating the furnace wall when necessary to ensure that the temperature of the aluminum liquid meets the requirements of the subsequent process, ensure the fluidity and the processing performance of the aluminum liquid, and ensure the fluidity of the impurity molten liquid so as to facilitate the discharge of the impurity molten liquid. The temperature regulation mechanism not only improves the heat efficiency in the aluminum smelting process, but also is beneficial to optimizing the quality of aluminum liquid and the stability of the smelting process.

The invention also provides a molten liquid impurity removing method, which is applied to the smelting device and comprises the following steps:

Step 1: pouring the mixed melt and the impurity precipitation agent into a smelting cavity 102 of the standing furnace 10 through a feed port 101 of the standing furnace 10 respectively;

step 2: the temperature adjusting component 40 of the standing furnace 10 is adjusted, so that the mixed melt in the standing furnace 10 is reduced to a first preset temperature T1 at a preset cooling speed of 0.01 ℃/s to 3 ℃/s, the first preset temperature T1 is set at 560 ℃ to 760 ℃, and the first preset temperature T1 is kept for 0.5 to 2 hours, so that an impurity deposition layer is separated out and is settled to the bottom of the standing furnace 10;

Wherein, in the step 2, the preset cooling rate of the mixed melt of the standing furnace 10 can be specifically set to 0.01 ℃/s, 1 ℃/s, 2 ℃/s, 3 ℃/s or the like; the first preset temperature T1 is specifically set at 560 ℃, 600 ℃, 650 ℃, 700 ℃, 760 ℃ or the like; the first preset time for heat preservation at the first preset temperature T1 may be specifically set to 0.5h, 1h, 2h, or the like.

Step 3: measuring the volume V of the pure liquid and the height h of the impurity deposition layer, covering the furnace cover 12, placing the baffle part 20 in the smelting cavity 102 of the standing furnace 10, and driving the baffle part 20 to move in the standing furnace 10 through the first driving part 50 so that the baffle part 20 is positioned above the impurity deposition layer, and enabling the bottom surface of the baffle part 20 to be in contact with the top surface of the deposition layer; in the process, the baffle part 20 divides the smelting cavity 102 into a first chamber 1021 and a second chamber 1022 which are independent from each other, and pure liquid flows to the upper part of the baffle part 20 through the communication channel 201;

By the arrangement, the pure liquid can be located above the baffle part 20 as completely as possible, and waste of the pure liquid is avoided. Meanwhile, the deposition layer has a certain supporting effect on the baffle part 20, so that the stability of the baffle part 20 is improved, the acting force on the first driving part 50 is reduced, and the stability of the device is improved;

Step 4: the position of the blocking part 30 is adjusted by the second driving part 60 so that the blocking part 30 blocks the circulation channel of the standing furnace 10;

By the arrangement, the deposition layer can be completely blocked below the blocking part 20 and the blocking part 30, so that the impurities are prevented from flowing back to the pure liquid again;

Step 5: adjusting a temperature adjusting component 40 of the standing furnace 10, heating the standing furnace 10 to a second preset temperature T2 at a preset heating speed of 0.01 ℃/s to 3 ℃/s, and preserving the heat at the second preset temperature T2 for a second preset time of 0.5h to 2h so as to enable the pure liquid and the impurity melt to be in a molten state respectively, wherein the temperature of T2-T1 is more than or equal to 10 ℃ and less than or equal to 100 ℃;

By the arrangement, the mobility of the pure liquid and the impurity molten liquid can be improved under the condition that the impurity molten liquid and the pure liquid are completely separated, and the pure liquid and the impurity molten liquid can be conveniently discharged; when the temperature of T2-T1 is less than 10 ℃, the fluidity of the pure liquid and the impurity molten liquid is not obviously improved, and the discharge of the pure liquid and the impurity molten liquid is inconvenient to realize; when T2-T1 is higher than 100 ℃, the fluidity of the pure liquid and the impurity melt is good, but the energy consumption of the standing furnace 10 is high, the production period is long, and the efficiency is low. Therefore, the scheme sets the T2-T1 into the scheme, so that the effects of improving the fluidity of the pure liquid and the impurity melt and reducing the production efficiency without excessively increasing the energy consumption are achieved.

In the step 5, the preset heating speed can be specifically set to be 0.01 ℃/s, 0.05 ℃/s, 1 ℃/s, 2 ℃/s or 3 ℃/s, etc.; the second preset time for heat preservation at the second preset temperature T2 can be specifically set to be 0.5h, 1h, 1.5h or 2h, etc.; T2-T1 can be specifically set at 10 ℃, 30 ℃, 50 ℃, 60 ℃, 80 ℃, 100 ℃ or the like.

Step 6: the clean liquid is discharged from the first chamber 1021 of the holding furnace 10, and the impurity melt is discharged from the second chamber 1022 of the holding furnace 10 through the impurity melt discharge port 104 at the bottom of the holding furnace. In the embodiment of this scheme, through extraction subassembly 03 extraction pure liquid, wherein, the volume of the pure liquid of extraction is V, so sets up, can promote to pure liquid exhaust accuracy avoid causing the waste of pure liquid or avoid extraction subassembly 03 to idle running work.

Further, in step 6, the pure liquid in the stationary furnace 10 is discharged first, and then the impurity melt is discharged. So set up for when impurity melt has certain supporting role to separating portion 20, the pure liquid of emission promotes the stability of this device.

Further, in step 4, the barrier 20 is lowered at a preset lowering speed of 0.1mm/s to 100mm/s until the barrier 20 is moved to a preset height. So set up, can guarantee the stability to separating the portion 20 process of transferring, reduce the disturbance that causes pure liquid and sedimentary deposit, reduce impurity backward flow in the sedimentary deposit and to first cavity 1021 in, further promote pure liquid and impurity separation's effect.

Wherein, the preset lowering speed in the step 4 can be specifically set to 0.1mm/s, 1mm/s, 10mm/s, 20mm/s, 50mm/s, 70mm/s, 90mm/s or 100mm/s, etc.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. A smelting apparatus, comprising:

A stationary furnace (10) provided with a feed inlet (101), a smelting cavity (102), a pure liquid discharge port (103) and an impurity molten liquid discharge port (104);

A baffle part (20) arranged in the smelting cavity (102), wherein the baffle part (20) divides the smelting cavity (102) into a first cavity (1021) and a second cavity (1022) which are mutually independent, the first cavity (1021) is positioned above the second cavity (1022), the first cavity (1021) is communicated with the pure liquid discharge port (103), the second cavity (1022) is communicated with the impurity melt discharge port (104), a communication channel (201) is formed between the baffle part (20) and the standing furnace (10), and the first cavity (1021) is communicated with the second cavity (1022) through the communication channel (201);

A blocking portion (30) movably disposed in the smelting chamber (102), the blocking portion (30) being configured to block or open the communication passage (201) to communicate or block the first chamber (1021) and the second chamber (1022);

And the temperature adjusting assembly (40) is arranged on the standing furnace (10), and the temperature adjusting assembly (40) is used for adjusting the temperature of the standing furnace (10).

2. Smelting apparatus according to claim 1, wherein the height of the barrier (20) within the smelting chamber (102) is adjustable.

3. Smelting apparatus as claimed in claim 2, wherein the smelting apparatus further comprises:

And the first driving part (50) is arranged in the smelting cavity (102), and the first driving part (50) is in driving connection with the baffle part (20) so as to enable the baffle part (20) to ascend or descend.

4. The smelting apparatus of claim 3, wherein the smelting apparatus further comprises:

The second driving part (60), the drive end of second driving part (60) sets up in smelting chamber (102), second driving part (60) with shutoff portion (30) drive connection, so that shutoff portion (30) shutoff or open communication passageway (201).

5. Smelting apparatus according to claim 4, wherein the holding furnace (10) comprises:

The furnace body (11) is provided with the feed inlet (101), the smelting cavity (102) and the impurity molten liquid discharge port (104), and the feed inlet (101) is arranged at the top end of the furnace body (11);

The furnace cover (12) is detachably arranged at the feed inlet (101) of the furnace body (11), and the first driving part (50) and the second driving part (60) are respectively arranged on the furnace cover (12).

6. The smelting apparatus of claim 1, wherein the smelting apparatus further comprises:

the smelting furnace (01) is used for smelting aluminum materials, and the smelting furnace (01) is provided with a mixed liquor discharge port which is communicated with a feed port (101) of the standing furnace (10);

the heat preservation furnace (02) is provided with a pure liquid inlet which is communicated with a pure liquid outlet (103) of the standing furnace (10);

The extraction assembly (03), the extraction assembly (03) is provided with a liquid inlet pipe (031) and a liquid outlet pipe (032) which are mutually communicated, the liquid inlet pipe (031) extends into the first chamber (1021) through the pure liquid outlet (103), and the liquid outlet pipe (032) is communicated with the pure liquid inlet;

The slag box (04) is provided with an impurity melt inlet which is communicated with the impurity melt outlet (104).

7. The smelting device according to claim 6, wherein a plurality of the stationary furnaces (10) are provided, a plurality of the stationary furnaces (10) are arranged in parallel, the feed ports (101) of the stationary furnaces (10) are respectively communicated with the mixed liquor discharge ports of the smelting furnaces (01), and the impurity melt discharge ports (104) of the stationary furnaces (10) are respectively communicated with the impurity melt inlet ports of the slag box (04).

8. Smelting apparatus according to claim 1, wherein the temperature regulating assembly (40) comprises:

A condenser assembly (41) arranged on the furnace wall of the standing furnace (10), wherein the condenser assembly (41) is used for cooling the furnace wall of the standing furnace (10);

And a heating assembly (42) arranged on the furnace wall of the standing furnace (10), wherein the heating assembly (42) is used for heating the furnace wall of the standing furnace (10).

9. A melt impurity removal method, wherein the melt impurity removal method employs the smelting apparatus according to any one of claims 1 to 7, the melt impurity removal method comprising:

Step 1: pouring the mixed melt and the impurity precipitation agent into a smelting cavity (102) of the standing furnace (10) through a feed port (101) of the standing furnace (10) respectively;

step 2: a temperature adjusting component (40) of the standing furnace (10) is adjusted, so that the mixed melt in the standing furnace (10) is reduced to a first preset temperature T1 at a preset cooling speed of 0.01 ℃/s to 3 ℃/s, the first preset temperature T1 is set at 560 ℃ to 760 ℃, and the first preset temperature T1 is kept for a first preset time of 0.5h to 2h, so that an impurity deposition layer is separated out and is settled to the bottom of the standing furnace (10) to form the impurity deposition layer;

Step 3: placing a baffle part (20) of the standing furnace (10) in a smelting cavity (102) of the standing furnace (10) and above the impurity deposition layer;

step 4: adjusting the position of the blocking part (30) so that the blocking part (30) blocks the circulation channel of the standing furnace (10);

Step 5: a temperature adjusting component (40) for adjusting the standing furnace (10), wherein the standing furnace (10) is heated to a second preset temperature T2 at a preset heating speed of 0.01 ℃/s to 3 ℃/s, and the second preset temperature T2 is kept for a second preset time of 0.5h to 2h, so that the pure liquid and the impurity melt are respectively in a molten state, and the temperature of the pure liquid and the impurity melt is more than or equal to 10 ℃ and less than or equal to 100 ℃;

step 6: -discharging the pure liquid from a first chamber (1021) of the holding furnace (10), and-discharging the impurity melt from a second chamber (1022) of the holding furnace (10).

10. The method for removing impurities from a molten metal according to claim 9, wherein,

The step 3 further includes: measuring the volume V of the pure liquid;

the step 6 comprises the following steps: the volume of the purified liquid discharged from the first chamber 1021 in the stationary furnace 10 is V.

11. The method of removing impurities from a molten metal according to claim 9, wherein said step 3 further comprises:

the height h of the impurity deposit layer is measured, and the barrier portion (20) is placed according to the height h.

12. The method according to claim 9, wherein in the step 6, the impurity melt is discharged after the pure liquid in the stationary furnace (10) is discharged.

13. The melt impurity removal method according to claim 9, wherein in the step 4, the barrier portion (20) is lowered at a preset lowering speed of 0.1mm/s to 100mm/s until the barrier portion (20) is moved to a preset height.