CN203112905U - Copper matte bottom blowing device - Google Patents

Abstract

The utility model discloses a copper matte bottom blowing blowing device. The copper matte bottom blowing and blowing device comprises: a furnace body, the furnace body has a furnace cavity, and the furnace body has a feeding port for adding materials including copper matte into the furnace cavity, and is used for discharging and blowing A slag discharge port for slag, a blister copper discharge port for discharging blister copper, a smoke outlet for discharging flue gas, and a spray gun socket at the bottom of the furnace body; for adding liquid copper matte to the a copper matte package in the furnace cavity; and a bottom blowing lance inserted into the lance socket to continuously blow oxygen-containing gas into the melt in the furnace cavity. According to the copper matte bottom blowing and blowing device of the utility model, the continuous blowing of copper matte can be realized, the amount of flue gas produced is small, the concentration of _SO2 is stable, the environment is good, the efficiency is high, and the production cost of blister copper and sulfuric acid is low.

Description

Copper Matte Bottom Blowing Converting Unit

technical field

The utility model relates to the technical field of nonferrous metallurgy, in particular to a copper matte bottom blowing blowing device.

Background technique

The metallurgical methods of copper are divided into fire method and wet method. The technological process of pyrometallurgy copper smelting is mainly to obtain copper concentrate after flotation of copper sulfide concentrate, and then smelt it in electric furnace, flash furnace and other smelting furnaces to obtain copper matte , The copper matte is blown to obtain blister copper, the blister copper is fire-refined to obtain anode copper, and then electrolytically refined to obtain electric copper. At present, PS converter is usually used for blowing of copper matte. Liquid copper matte is added into PS converter, and oxygen is blown from the side of PS converter to obtain blister copper and blowing slag. After one batch of copper matte blowing is completed, the blister copper and blowing slag are discharged, and then the next batch of copper matte is added for blowing. PS converter equipment is seriously polluted at low altitude, can only operate intermittently, has low efficiency, unstable flue gas, low operating rate, low concentration of SO ₂ in flue gas, high flue gas treatment cost, low operating rate of PS converter, and short furnace life.

Utility model content

The utility model aims to solve one of the above-mentioned technical problems at least to a certain extent or at least provide a useful commercial choice.

For this reason, an object of the utility model is to propose a copper matte bottom blowing and blowing device, which can realize continuous blowing of copper matte, and produces less flue gas, which is comparable to PS converter Compared with the flue gas, the _SO2 concentration is higher and stable, the operating environment is good, the environment is good, the efficiency is high, and the production cost of blister copper and sulfuric acid is low.

In order to achieve the above object, according to the utility model, a copper matte bottom blowing and blowing device is proposed. The copper matte bottom blowing and blowing device includes: a furnace body, the furnace body has a furnace cavity, and the furnace body has In the furnace cavity, there is a feeding port for adding materials including copper matte, a slag discharge port for discharging blowing slag, a blister copper discharge port for discharging blister copper, a smoke outlet for discharging flue gas, and a The spray gun socket at the bottom of the furnace body; used for adding liquid copper matte to the copper matte package in the furnace cavity; and inserted into the spray gun socket to continuously blow Bottom blowing lance into oxygen-containing gas.

According to the copper matte bottom blowing and converting device of the utility model, by using the bottom blowing lance from the bottom of the copper matte bottom blowing and converting device to continuously blow oxygen-containing gas into the melt in the copper matte bottom blowing and converting device, Continuous blowing of copper matte can be realized, the amount of flue gas produced is small, the concentration is stable, the environment is good, the efficiency is high, the cost is low, the efficiency of copper matte treatment is high, the quality of blister copper is high, and the copper content in blowing slag is reduced.

Preferably, the feed port includes a first feed port for adding copper matte and flux into the furnace cavity and a second feed port for adding scrap copper and/or scrap copper into the furnace cavity .

Preferably, the feeding port and the smoke outlet share an opening. Thereby, the number of openings of the copper matte bottom blowing and converting device can be reduced, the difficulty of processing can be reduced, the sealing performance can be improved, the air leakage of the furnace body can be reduced, and the environmental protection performance can be further improved.

Preferably, the bottom blowing lance continuously blows the oxygen-containing gas into the blister copper layer of the melt.

Preferably, the bottom blowing lance continuously blows the oxygen-containing gas into the copper matte layer of the melt.

Preferably, the copper matte bag is connected to the feeding port so that the liquid copper matte can be directly poured into the furnace cavity through the feeding port of the furnace body.

Preferably, the copper matte bottom blowing and converting device also includes a furnace body connected to the copper matte bag for receiving the liquid copper matte in the copper matte bag and adding the liquid copper matte to the copper matte bag. The chute in the furnace cavity.

Preferably, the copper matte bottom blowing and converting device also includes a thermal insulation bag connected to the copper matte bag to receive the liquid copper matte poured into the copper matte bag and keep warm, and is connected with the heat preservation bag and the furnace body A chute connected to receive the copper matte in the insulation bag and add the copper matte into the furnace cavity.

Preferably, the furnace body is a rotatable cylindrical horizontal container. By turning, the bottom blowing spray gun can be easily replaced.

Preferably, the bottom blowing lance is arranged below the horizontal centerline of the furnace body.

Preferably, the angle α between the bottom blowing lance and the vertical upward direction is in the range of -120° to +120°.

Preferably, the angle α between the bottom blowing lance and the vertical upward direction is in the range of -60° to +60°.

Preferably, the angle α between the bottom blowing lance and the vertical upward direction is in the range of -30° to +30°.

Preferably, the angle α between the bottom blowing lance and the vertical upward direction is in the range of -20° to +20°.

Preferably, the angle β between the bottom-blowing lance and the direction perpendicular to the axial direction of the copper matte bottom-blowing converting device is in the range of -30° to +30°.

Preferably, the angle β between the bottom-blowing lance and the direction perpendicular to the axial direction of the copper matte bottom-blowing converting device is 0 degree.

Preferably, a first cooling water jacket or a ventilation brick is provided between the outer periphery of the bottom blowing lance and the furnace body. As a result, the service life of the bottom blowing lance can be further extended.

Preferably, the slag layer area of the copper matte bottom blowing converting device is provided with a second cooling water jacket. In this way, the service life of the copper matte bottom blowing converting device can be further extended.

Preferably, the first and second cooling water jackets are copper water jackets. The copper water jacket has the advantages of good cooling effect and long service life.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic diagram of a copper matte bottom blowing and refining device according to an embodiment of the present invention;

Fig. 2 is a transverse sectional view of a furnace body of a copper matte bottom blowing and converting device according to an embodiment of the present invention;

Fig. 3 is a transverse sectional view of a furnace body of a copper matte bottom blowing and converting device according to another embodiment of the present invention;

Fig. 4 is a schematic diagram of a projection on a vertical plane of a copper matte bottom blowing and converting device according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of a copper matte bottom blowing and refining device according to another embodiment of the present invention;

Fig. 6 is a flow chart of the operation process of the copper matte bottom blowing and converting device according to an embodiment of the present invention.

Copper matte bottom blowing blowing device 1, furnace body 10, furnace cavity 101, feeding port 102, slag discharge port 103, blister copper discharge port 104, smoke outlet 105, spray gun socket 106, bottom blowing spray gun 20, bracket 30 , support ring 40, ring gear 50, driving device 60, copper matte package 70, chute 80, heat preservation package 90, crude copper layer C1, copper matte layer C2, blowing slag layer C3, L1 blister copper liquid line, L2 copper matte Liquid line, L3 blowing slag liquid line.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", Orientation indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation , so it cannot be interpreted as a limitation of the present utility model.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "below" a second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. The features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

The copper matte bottom blowing device according to the embodiment of the present utility model will be described below with reference to FIGS. 1-5 . As shown in FIG. 1 , a copper matte bottom-blowing converting device 1 according to an embodiment of the present invention includes a furnace body 10 , a copper matte bag 70 and a bottom-blowing lance 20 .

The furnace body 10 has a furnace cavity 101 inside, and the furnace body 10 has a feeding port 102 for adding materials containing copper matte into the furnace cavity 101, a slag discharge port 103 for discharging blowing slag, and a blister copper discharge port 103 for discharging blister copper. A copper discharge port 104 , a smoke outlet 105 for discharging smoke and a spray gun insertion hole 106 arranged at the bottom of the furnace body 10 . The copper matte bag 70 is used for adding liquid copper matte into the furnace body 10 . The bottom blowing lance 20 is inserted into the lance insertion hole 106 for continuously blowing oxygen-containing gas into the melt in the furnace chamber 101 .

According to the copper matte bottom blowing and blowing device of the embodiment of the utility model, the copper matte can be blown by bottom blowing oxygen-containing gas, which has good environmental protection performance, reduced pollution, less smoke generated, stable concentration, and high quality of blister copper , the blowing slag contains less copper, and can process the copper mattes produced by various smelting furnaces, and can be continuously blown to improve efficiency.

The material added into the furnace cavity 101 can be liquid copper matte and flux, preferably, scrap copper and/or scrap copper can also be added through the feeding port 102, so that there is no need to be equipped with equipment for melting scrap copper and scrap copper, The investment, energy consumption and blowing cost are reduced, and the application range of the process is further expanded.

The copper matte bag 70 is used to directly pour the liquid copper matte into the furnace body 10 through the feeding port 102 of the furnace body 10 . Optionally, the feeding port 102 can be divided into a first feeding port for adding liquid copper matte and flux into the furnace chamber 101 and a second feeding port for adding scrap copper and/or scrap copper into the furnace chamber 101 mouth. More specifically, the first feed port can be further divided into copper matte feed port and flux feed port, and the second feed port can be further divided into anode scrap feed port and scrap copper feed port. Preferably, the feeding port 102 and the smoke outlet 105 can be the same opening, thereby reducing the number of openings in the furnace body 10 and reducing manufacturing costs. Optionally, the smoke outlet 105 can share an opening with any one of the first and second feeding ports, or the smoke outlet 105 can be connected to any of the copper matte feeding port, the flux feeding port, the anode feeding port and the scrap copper feeding port. One or more share an opening.

In a preferred embodiment of the present utility model, as shown in Figure 5, the copper matte bottom blowing and converting device 1 can also include a chute 90, the chute 90 is connected with the furnace body 10 and the copper matte bag 70, and the copper matte bag 70 can be used for The liquid copper matte is fed into the furnace body 10 through the chute 90 . Advantageously, the copper matte bottom blowing and converting device 1 can also include a thermal insulation bag 80 and a chute 90, the chute 90 is connected to the furnace body 10, the thermal insulation bag 80 is connected to the chute 90, the copper matte bag 70 is connected to the thermal insulation bag, and the thermal insulation bag 80 can be It is used to insulate the liquid copper matte poured into the copper matte bag 70 , and is used to add the copper matte in the heat preservation bag 80 into the furnace body 10 through the chute 90 . In this example, the charging port 102 is arranged at the end of the furnace body 10. Of course, it can be understood that the smoke outlet 105 arranged at the top of the furnace body 10 can still be used as a charging port, for example, as a copper scrap and/or Or the second feeding port for scrap copper, and the feeding port 102 at the end can be used as the first feeding port. Here, connection should be understood in a broad sense. For example, if the chute 90 is connected to the insulation bag 80, it means that the copper matte in the insulation bag 80 can be poured into the chute 90. As shown in FIG. Similarly, the connection between the copper matte bag 70 and the thermal insulation bag 80 means that the copper matte in the copper matte bag 70 can be poured into the thermal insulation bag 80, as shown in Figure 5, the copper matte bag 70 can be transported to the top of the thermal insulation bag, of course, when the copper After the copper matte in the matte bag 70 is poured into the insulation bag 80, the copper matte bag 70 can be removed.

Utilize the copper matte bag 70 to add liquid copper matte into the copper matte bottom blowing and converting device 1, which can be one of the following ways:

The copper matte in the copper matte bag 70 is directly poured into the copper matte bottom blowing and converting device 1 through the feeding port 102 of the copper matte bottom blowing and converting device 1;

The copper matte in the copper matte bag 70 is added into the copper matte bottom blowing converting device 1 through the chute 90; and

Pour the copper matte in the copper matte bag 70 into the thermal insulation bag 80, and then add the copper matte in the thermal insulation bag 80 into the copper matte bottom blowing and converting device 1 through the chute 90.

As shown in Figure 1, in some embodiments of the present utility model, there may be multiple spray gun insertion holes 106 and a plurality of spray gun insertion holes 106 may be formed at the bottom of the furnace body 10 at intervals, it should be understood that the term The bottom should be understood in a broad sense, including any suitable position below the horizontal centerline X of the furnace body 10. Preferably, the spray gun is close to the directly below the furnace body 10, which will be described in more detail below. There may be multiple bottom blowing lances 20 and the multiple bottom blowing lances 20 may be inserted into multiple lance insertion holes 106 correspondingly, that is, one bottom blowing lance 20 may be inserted into one lance insertion hole 106 . Thus, the oxygen-containing gas can be blown into the blister copper layer C1 more uniformly, thereby further improving the quality of the blister copper. Here, oxygen-containing gas should be understood broadly, including pure oxygen, oxygen-enriched gas, and oxygen-containing air, for example. Preferably, the oxygen-containing gas is oxygen-enriched air, such as oxygen-enriched air with an oxygen concentration above 70%. The bottom-blowing lance 20 may be arranged below the horizontal centerline X of the furnace body 10 of the copper matte bottom-blowing converting furnace 1 .

Specifically, the furnace pressure of the oxygen-containing gas may be 0.2MPa-0.8MPa. Further, the furnace pressure of the oxygen-containing gas may be 0.4MPa-0.6MPa.

The oxygen concentration of the oxygen-containing gas may be 20%-99.6%. Further, the oxygen concentration of the oxygen-containing gas may be 30%-75%.

In a preferred embodiment of the present utility model, the furnace body 10 may be a rotatable cylindrical horizontal container. By rotating the furnace body 10, the bottom blowing lance 20 can be replaced and maintained conveniently, and the melt in the furnace chamber 101 can be evacuated when maintenance is required.

As shown in FIG. 1 , the copper matte bottom blowing device 1 further includes a bracket 30 , a support ring 40 , a ring gear 50 and a driving device 60 . The support ring 40 is sleeved on the furnace body 10 and rotatably supported on the bracket 30 . The ring gear 50 is sleeved on the outer surface of the furnace body 10 . The driving device 60 is connected with the ring gear 50 to drive the furnace body 10 to rotate by driving the ring gear 50 to rotate. The driving device 60 may include, for example, a motor, a reducer connected to the motor, a gear may be installed on the output shaft of the reducer, and the gear meshes with the ring gear 50 to drive the ring gear 50 to rotate. The furnace body 10 is driven by the ring gear 50 and rotates on the bracket 30. Since the furnace body 10 can rotate, it is convenient to replace the bottom blowing spray gun 20 and other operations.

As shown in FIGS. 2 and 3 , the angle α between the bottom blowing lance 20 and the vertical upward direction may be in the range of -120° to +120°, ie -120°≤α≤+120°. In other words, the included angle between the spraying direction of the bottom blowing lance 20 and the vertical upward direction is in the range of -120 degrees to +120 degrees. As shown in Figures 2 and 3, the included angle α from the blowing direction of the bottom blowing lance 20 along the counterclockwise direction to the vertical upward direction is positive, and from the blowing direction of the bottom blowing lance 20 along the clockwise direction to the vertical direction. The angle α in the upward direction is negative.

More specifically, the included angle α between the bottom blowing lance 20 and the vertical upward direction may be in the range of -60° to +60°, ie -60°≦α≦+60°. Advantageously, the included angle between the bottom blowing lance 20 and the vertical upward direction is in the range of -30° to +30°, ie -30°≤α≤+30°. Preferably, the included angle between the bottom blowing lance 20 and the vertical upward direction is in the range of -20° to +20°, ie -20°≦α≦+20°. As a result, the blowing effect can be increased.

In an optional embodiment of the present utility model, the angle β between the bottom blowing lance 20 and the direction perpendicular to the axial direction of the furnace body 10 (that is, the vertical direction in FIG. 4 ) ranges from -30 degrees to +30 degrees. within the range of degrees. More preferably, the included angle β is 0 degrees, that is, the bottom blowing lance 20 is oriented vertically.

In order to improve the service life of the bottom blowing lance 20 , a ventilation brick or a first cooling water jacket is provided between the outer periphery of the bottom blowing lance 20 and the furnace body 10 . The air brick can cool the bottom blowing lance 20 and can improve the fluidity of the melt in the furnace cavity 101 and improve the blowing effect. Optionally, nitrogen can be injected into the furnace cavity 101 through the ventilation bricks, so that the bottom blowing lance 20 can be better cooled and the melt in the furnace cavity 101 can be better stirred. When the cooling water jacket is provided, the cooling water jacket passes through the cooling water to cool the bottom blowing spray gun 20 .

Preferably, the slag layer area of the furnace chamber 101 is provided with a second cooling water jacket. As a result, the service life of the furnace body 10 can be further extended. Preferably, the first and second cooling water jackets are copper water jackets. Compared with the traditional steel water jacket, the copper water jacket has the advantages of good cooling effect and long service life.

According to a preferred embodiment of the present invention, the bottom blowing lance 20 continuously blows the oxygen-containing gas into the copper matte layer C2 of the melt, more preferably, the bottom blowing lance 20 continuously blows the oxygen-containing gas into the blister copper layer C1 of the melt Within, the beneficial technical effects will be described in detail below.

The copper matte bottom blowing and blowing device according to the embodiment of the present invention can be used to process copper matte obtained by smelting in various smelting furnaces.

The operation process of the copper matte bottom blowing converting device according to the embodiment of the present utility model will be described below with reference to FIG. 6 in combination with FIGS. 1-5 .

As shown in Figure 6, the operation process of the copper matte bottom blowing and blowing device according to the embodiment of the utility model includes the following steps: using the copper matte bag 70 to add liquid copper matte into the copper matte bottom blowing and blowing device 1; Add it into the copper matte bottom blowing converting device 1; utilize the bottom blowing lance 20 to continuously blow oxygen-containing gas into the melt in the copper matte bottom blowing converting device 1 from the bottom of the copper matte bottom blowing converting device 1; and Blister copper and blowing slag are respectively discharged from the copper matte bottom blowing and blowing device 1 .

According to the operation process of the copper matte bottom blowing and converting device of the embodiment of the present invention, by using the bottom blowing lance, blow continuously from the bottom of the copper matte bottom blowing and converting device to the melt in the copper matte bottom blowing and converting device. Oxygen-containing gas can be used to achieve continuous blowing, improve efficiency, reduce costs, and have less flue gas volume, stable flue gas concentration, less flue gas escape, good environmental performance, reduced pollution, high blister copper quality, and blowing slag The copper content is reduced.

It should be understood that the continuous blowing of oxygen-containing gas into the furnace chamber 101 means: during normal production, continuous blowing of oxygen-containing gas can avoid damage to the bottom-blowing lance 20. Of course, when the copper matte bottom-blowing converting device During error or normal maintenance, the bottom blowing spray gun 20 also needs to stop blowing.

Compared with the traditional PS converter with periodic side blown oxygen, the air supply volume per unit time is reduced, the flue gas volume per unit time is small, the thermal stability is good, the cost and energy consumption are low, and the efficiency is high.

In some embodiments of the present invention, the bottom blowing lance 20 continuously blows the oxygen-containing gas from the bottom of the furnace body 10 into the copper matte layer C2 in the furnace cavity 101 . By continuously blowing oxygen-containing gas into the copper matte layer C2, the inclination angle of the furnace body 10 can be reduced, the volume utilization rate of the furnace body 10 can be improved, and the maintenance of the bottom blowing lance 20 is facilitated.

Advantageously, the bottom blowing lance 20 continuously blows the oxygen-containing gas from the bottom of the furnace body 10 into the blister copper layer C1 in the furnace cavity 101 .

As shown in Figure 1, in the furnace cavity 101, the melt can be divided into three parts (three phases): blister copper layer C1, copper matte layer (or white copper matte layer) C2 and blowing slag layers C3, L1, L2 and L3 are crude copper liquid surface line, copper matte liquid surface line and slag layer liquid surface line respectively. Under the condition of three-phase coexistence, it is beneficial to reduce copper content in slag and improve safety. In some other embodiments of the present application, the melt in the blowing furnace can exist in two phases of blister copper and blowing slag, with no or almost no copper matte layer ( Or called white copper matte layer). For example, in these embodiments of the present invention, by precisely controlling the ratio of copper matte to oxygen-containing gas (oxygen content), the melt in the furnace cavity 101 can also be two parts (two phases), and the blister copper layer C1 And the blowing slag layer C3, that is, the copper matte enters the furnace chamber 101 and is blown into blister copper and blowing slag. Under the condition that the two phases coexist, the blister copper has high quality and low impurities. Through this control, the blowing effect can be further improved, and the sulfur content and other impurities (such as arsenic, antimony, bismuth, lead, etc.) of blister copper can be further reduced. Since the ratio of copper matte to oxygen-containing gas can be precisely controlled, it is possible to avoid over-oxidation of blister copper and the formation of foam slag due to too much injection of oxygen-containing gas, and to avoid Blister copper contains more impurities (such as arsenic, antimony, bismuth, lead, etc.) for subsequent processing.

The beneficial effect of blowing oxygen-containing gas into the blister copper layer is that: in the copper matte bottom blowing and converting device, the blister copper layer C1 is located below the copper matte layer C2, and the oxygen-containing gas is continuously blown into the blister copper layer C1 , the bottom blowing lance does not need to pass through the thick copper layer C1, which can improve the life of the bottom blowing lance. In other words, by continuously blowing oxygen-containing gas into the blister copper layer C1, the bottom blowing lance does not need to extend into the furnace cavity too much (for example, the length of the bottom blowing lance extending into the furnace cavity can be less than 50 mm), reducing the loss of the bottom blowing lance, prolonging the service life of the copper matte bottom blowing converting device, and reducing the operating cost of the copper matte bottom blowing converting device. In addition, the amount of oxygen-containing gas entering the slag layer is reduced, avoiding that the oxygen-containing gas ejected from the bottom blowing lance can easily pass through the copper matte layer C2 and enter the slag layer due to the thinner copper matte layer C2, thereby causing waste of oxygen-containing gas , can reduce the amount of oxygen-containing gas, and further reduce costs.

Moreover, by continuously blowing oxygen-containing gas into the blister copper layer, the oxygen potential in the blister copper layer can be made the highest, and the impurity elements (S, As, Sb, Bi, Pb, etc.) Oxidation removed, so as to obtain higher quality blister copper. Oxygen-containing gas can also use blister copper as a carrier to react with Cu ₂ S and CuS in the copper matte layer C2 in the form of Cu ₂ O and CuO to form Cu and SO ₂ , and react with FeS in the copper matte layer to form FeO and SO ₂ and Cu. The operation process of the copper matte bottom blowing and converting device can reduce the amount of Fe ₃ O ₄ generated, and prevent the precipitation of Fe ₃ O ₄ and the generation of foamy slag. Due to the low content of Fe ₃ O ₄ in the blowing slag, the viscosity of the blowing slag is low, which in turn can reduce the amount of Cu ₂ O inclusions in the blowing slag (for example, the copper content of the blowing slag can be less than 14%, or even less than 10%). That is, by continuously blowing the oxygen-containing gas into the blister copper layer, the reaction time of the oxygen-containing gas is increased, the utilization rate of the oxygen-containing gas is improved, and the quality of the blister copper is improved. In addition, by continuously blowing oxygen-containing gas into the blister copper layer, the total amount of blown gas per unit time can be reduced, thereby reducing the risk of blowing into the furnace.

By continuously blowing oxygen-containing gas into the blister copper layer, the furnace temperature can be stabilized, which overcomes the shortcoming of excessive temperature fluctuations in the periodic operation of the converter, and is conducive to greatly improving the service life of the copper matte bottom blowing and blowing device , Reduce the consumption of refractory materials and maintenance workload, thereby reducing the cost of copper smelting. And the operation process of described copper matte bottom blowing blowing refining device can make the amount of flue gas and the _SO content in the flue gas stable and balanced, and the body of furnace does not need to be rotated frequently, so that the air leakage rate is greatly reduced, and the flue gas of the periodic operation of the converter is overcome. The shortcomings of large fluctuations in the amount and flue gas composition are beneficial to acid production and reduce the investment and operating costs of the acid plant.

Advantageously, after a batch of copper matte is added into the furnace cavity 101 to blow the blister copper, only the blister copper is discharged. Adding new copper matte into the furnace chamber 101 for blowing again can reduce the copper oxide in the first blowing slag, thereby reducing the copper content in the blowing slag.

As mentioned above, the angle α between the spraying direction of the bottom blowing lance 20 and the vertical upward direction may be in the range of -120° to +120°. Preferably, the included angle α between the spraying direction of the bottom blowing lance 20 and the vertical upward direction may be in the range of -60° to +60°. Advantageously, the angle α between the spraying direction of the bottom blowing lance 20 and the vertical upward direction is in the range of -30° to +30°. Preferably, the included angle α between the spraying direction of the bottom blowing lance 20 and the vertical upward direction is in the range of -20° to +20°. It can be understood that when the volume of the copper matte bottom blowing and converting device 1 is large, there are many melts to be processed, and the included angle α can be larger. On the contrary, the included angle α can be smaller to avoid blowing through, resulting in waste of oxygen-containing gas , affecting blowing effect.

According to an embodiment of the present utility model, the angle β between the bottom-blowing lance 20 and the direction perpendicular to the axial direction of the copper matte bottom-blowing converting furnace is in the range of -30 degrees to +30 degrees .

According to an embodiment of the present utility model, the included angle β is 0 degree.

The operation process of the copper matte bottom blowing and converting device according to the embodiment of the present invention may also include adding anode copper and/or scrap copper into the furnace cavity 101 . By adding scrap copper and/or scrap copper to the copper matte bottom blowing and converting device 1, there is no need to equip equipment for melting scrap copper and scrap copper, thereby reducing investment, energy consumption and blowing costs, and further expanding The scope of application of the process is defined.

According to an embodiment of the present invention, the flux may be at least one of limestone, lime, quartz stone, a mixture of quartz stone and lime, and a mixture of quartz stone and limestone. The smelting slag produced by using limestone and lime as the flux is alkaline slag, which has good fluidity and low copper content, but it severely corrodes the furnace lining. In order to solve this problem, the utility model proposes that the acid slag produced by using quartz stone as a flux has less corrosion on the furnace lining, which can effectively prolong the continuous operation time and the service life of the bottom blowing blowing furnace. However, the test also found that the fluidity of the acidic slag is poor, resulting in a high copper content in the blowing slag, and it is easy to generate foamy slag, which affects production safety. In order to solve the problem of acid slag, the utility model also proposes to use the mixture of quartz stone and lime or the mixture of quartz stone and limestone as the flux to make slag. The utility model calls this kind of blowing slag neutral slag. The use of neutral slag can not only reduce the erosion of the furnace lining, but also improve the fluidity to a certain extent, reduce the copper content in the slag, and reduce the risk of foaming slag, which is a more preferred technical solution.

Preferably, the blowing slag can be discharged continuously through overflow. Of course, it can also be discharged intermittently by means of overflow, or by drilling holes in the furnace body 10 .

Preferably, the blister copper can be discharged continuously by siphon. Of course, it can also be discharged intermittently by means of overflow, or by drilling holes in the furnace body 10 .

According to the blowing process of the embodiment of the present invention, the copper content of the blowing slag may be less than or equal to 20wt%. In other words, the mass percentage of copper in the blowing slag to the blowing slag is less than or equal to 20%. More advantageously, the copper content of the blowing slag is less than or equal to 15wt%, so as to reduce the return amount and mechanical loss of copper in the blowing slag.

In some examples of the present invention, the blowing temperature in the copper matte bottom blowing converting device 1 may be 1150°C-1300°C to maintain the blowing process. Advantageously, the blowing temperature in the copper matte bottom blowing converting device 1 can be 1180°C-1250°C, which can maintain the blowing process more safely. In addition, according to the blowing process of the embodiment of the present invention, nitrogen can be sprayed into the blister copper layer in the copper matte bottom blowing blowing device 1 to stir the melt and improve the blowing effect and the quality of blister copper. Nitrogen is injected into the blister copper layer, which can also improve the quality of the blister copper.

In an example of the present invention, the bottom blowing spray gun 20 can be cooled by the first cooling water jacket or the air-permeable brick. As a result, the lifetime of the bottom blowing lance 20 is increased.

According to the operation process of the copper matte bottom blowing and blowing device and the copper matte bottom blowing and blowing device of the embodiment of the present invention, continuous blowing of copper matte can be realized, the amount of smoke generated is small, the concentration is stable, environmental protection, and the quality of blister copper Improvement, low copper content in blowing slag, high efficiency, low cost, and wide application range.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be construed as limitations of the present invention. The above-mentioned embodiments can be changed, modified, replaced and modified within the scope of the present utility model under the principle and purpose.

Claims (19)

1. A copper matte bottom blowing blowing device is characterized in that, comprising: Furnace body, the furnace body has a furnace cavity, the furnace body has a feeding port for adding materials including copper matte into the furnace cavity, a slag discharge port for discharging blowing slag, and a discharge port for discharging blister copper The thick copper discharge port, the smoke outlet for exhausting the smoke and the spray gun socket located at the bottom of the furnace body; for adding liquid copper matte to the copper matte bag in the furnace cavity; and A bottom blowing lance inserted into the lance insertion hole to continuously blow oxygen-containing gas into the melt in the furnace cavity. the 2. copper matte bottom blowing converting device according to claim 1, is characterized in that, described feed port comprises the first feed port that is used to add copper matte and flux in described furnace cavity and is used for adding to described furnace chamber The second feeding port for adding scrap copper and/or scrap copper into the furnace cavity. the 3. The copper matte bottom blowing and converting device according to claim 1, characterized in that, the feeding port and the smoke outlet share one opening. the 4. The copper matte bottom blowing converting device according to claim 1, characterized in that, the bottom blowing lance continuously blows the oxygen-containing gas into the blister copper layer of the melt. the 5. The copper matte bottom-blowing converting device according to claim 1, characterized in that, the bottom-blowing lance continuously blows the oxygen-containing gas into the copper matte layer of the melt. the 6. The copper matte bottom blowing and blowing device according to claim 1, characterized in that, the copper matte bag is connected with the charging port so that the liquid copper matte can be directly passed through the charging port of the furnace body Pour into the oven cavity. the 7. The copper matte bottom blowing and converting device according to claim 1, characterized in that, the copper matte bottom blowing and converting device also includes a furnace body and the copper matte bag that are connected to each other for receiving the copper matte liquid copper matte in the copper matte bag and adding the liquid copper matte to the chute in the furnace cavity. the 8. The bottom blowing and converting device for copper matte according to claim 1, characterized in that, the bottom blowing and converting device for copper matte also includes a liquid that is connected to the copper matte bag to receive the poured copper matte bag. An insulation bag for copper matte and heat preservation, and a chute connected with the heat preservation and the furnace body to receive the copper matte in the heat preservation bag and add the copper matte into the furnace cavity. the 9. The copper matte bottom blowing and converting device according to claim 1, characterized in that the furnace body is a rotatable cylindrical horizontal container. the 10. The copper matte bottom-blowing converting device according to claim 1, characterized in that the bottom-blowing lance is arranged below the horizontal centerline of the furnace body. the 11. The copper matte bottom-blowing converting device according to claim 1, characterized in that the angle α between the bottom-blowing lance and the vertical upward direction is in the range of -120° to +120°. the 12. The copper matte bottom-blowing converting device according to claim 11, characterized in that the angle α between the bottom-blowing lance and the vertical upward direction is in the range of -60° to +60°. the 13. The copper matte bottom-blowing converting device according to claim 12, characterized in that the angle α between the bottom-blowing lance and the vertical upward direction is in the range of -30° to +30°. the 14. The copper matte bottom blowing and converting device according to claim 13, characterized in that, the angle α between the bottom blowing lance and the vertical upward direction is in the range of -20 degrees to +20 degrees . the 15. The copper matte bottom blowing converting device according to claim 1, characterized in that, the angle β between the bottom blowing lance and the direction perpendicular to the axial direction of the copper matte bottom blowing converting device In the range of -30 degrees to +30 degrees. the 16. The copper matte bottom blowing converting device according to claim 15, characterized in that, the angle β between the bottom blowing lance and the direction perpendicular to the axial direction of the copper matte bottom blowing converting device is 0 degrees. the 17. The copper matte bottom-blowing converting device according to any one of claims 1-16, characterized in that a first cooling water jacket or a ventilating water jacket is provided between the outer periphery of the bottom-blowing lance and the furnace body. brick. the 18. The copper matte bottom-blowing converting device according to claim 17, characterized in that, the slag layer area of the copper matte bottom-blowing converting device is provided with a second cooling water jacket. the 19. The copper matte bottom-blowing converting device according to claim 18, characterized in that, the first and second cooling water jackets are copper water jackets. the

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