CN210856286U - Copper-lead slag separation device and system - Google Patents

Abstract

The utility model discloses a copper lead sediment separator and system, the device is including inlaying the furnace body in insulation construction, the lateral wall of furnace body is from last to having seted up first slag export, matte export and first bullion rainbow suction inlet down in proper order, heating device has been seted up at the top of furnace body. The system comprises an electric arc furnace and the device. Adding the copper-lead melt obtained by pyrometallurgical smelting into an electric arc furnace for smelting to obtain crude lead and copper-lead slag melt, feeding the melt after most of lead is separated into a copper-lead slag separation device, heating, and performing high-temperature separation on slag and copper floating on the lead to obtain crude lead, matte with low lead content and heavy metal depleted slag. The copper-lead slag separation device has the effects of prolonging the heat preservation time of the molten slag, and layering and clarifying metals with different specific gravities, so that the content of valuable metals in the slag can be effectively reduced.

Description

Copper-lead slag separation device and system

Technical Field

The utility model relates to a metallurgical equipment field, concretely relates to copper lead sediment separator and system.

Background

The copper-lead melt is a mixed slag produced by copper-lead materials in a pyrometallurgical process, the difference of smelting processes can cause the content of valuable metals such as copper, lead and the like in the produced slag to be different, and when the content of lead in the mixed slag is more than 2%, the mixed slag needs to be comprehensively recycled to reduce the waste of resources.

The traditional process adopts an electric arc furnace to recover lead in the lead, and the slag from the electric arc furnace is difficult to control the lead to be below 2 percent, mainly because: the temperature of a molten mixture containing complex materials such as lead, copper and the like from a smelting furnace is about 1200 ℃, the temperature in an electric arc furnace is raised to 1250 ℃, the viscosity of slag is reduced, heavy metals such as lead, copper and the like with large specific gravity are separated from the slag, so that the heavy metals in the slag are depleted, and crude lead can be siphoned out. However, the arc heating method has insufficient clarification time, and copper and lead are difficult to separate. It is difficult to reduce the lead content to below 2%, resulting in the waste of valuable metals.

Chinese utility model patent CN201821638432.5 discloses a sediment, copper matte, lead layering gravity flow precipitation separation device, but its structure is comparatively complicated, needs additionally to set up the barricade and separates sediment liquid level and copper matte liquid level, and the cost is higher.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide an extension melting sediment incubation time, make the metal layering and the clarification of different proportion, effectively reduced the copper lead sediment separator of valuable metal's content in the sediment, furtherly, the utility model also provides a smelt thorough, the little copper lead sediment piece-rate system of precious metal loss.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a copper-lead slag separation device comprises a furnace body embedded in a heat insulation structure, wherein a first slag outlet, a matte outlet and a first crude lead siphon inlet are sequentially formed in the side wall of the furnace body from top to bottom; and a heating device is arranged at the top of the furnace body.

Borrow by above-mentioned structure, utilize the utility model discloses a copper lead sediment separator can keep warm for a long time to the copper lead melt, makes the metal layering of different proportion and clarification to the content of valuable metal in the sediment can effectively be reduced. The metal layers occurring after the heat preservation are discharged from the corresponding outlets.

And, compare with traditional separator, the utility model discloses set up heating device at the furnace body top, this is because through the copper lead melt who comes out in with electric arc furnace or smelting furnace rise to 1250 ℃ and above, the viscosity of sediment reduces and the come-up, in order to let the slag liquid that floats on upper portion keep high temperature, consequently takes upper portion heating method, and the furnace body lower part adopts heat preservation mechanism to keep warm, is favorable to the smelting of lead, also is favorable to heavy metal and sediment separation, consequently need not to set up complicated isolating construction.

As a further improvement of the above technical solution:

the top of the furnace body is provided with a smoke outlet. Because the upper heating mode is adopted, the generated flue gas is generally concentrated on the upper surface of the metal liquid surface, and the concentrated smoke exhaust is correspondingly carried out on the upper part.

A first copper-lead slag inlet is formed in the top of the furnace body, and a cover plate for opening or closing the first copper-lead slag inlet is arranged at the upper end of the furnace body.

The fire-jet opening and the smoke outlet are both arranged on the cover plate.

A first copper-lead slag inlet is formed in the side wall of the furnace body.

The heating device is a fire nozzle.

In order to facilitate the discharge of the separated metal slag, the first slag outlet, the matte outlet and the first crude lead siphon inlet are communicated with pipelines, and the pipelines penetrate through the heat insulation structure and extend out of the heat insulation structure.

As a general inventive concept, the present invention further provides a copper-lead slag separating system, which comprises an electric arc furnace having a second slag outlet, and further comprises the above copper-lead slag separating device, wherein the copper-lead slag separating device is used for processing the copper-lead melt discharged from the second slag outlet.

As a further improvement of the above technical solution:

and a second crude lead siphon inlet is also formed in the lower part of the electric arc furnace.

The upper end of the electric arc furnace is provided with a second copper-lead slag inlet.

And a second slag outlet of the electric arc furnace is communicated with a first copper-lead slag inlet of the copper-lead slag separation device through a pipeline or a chute.

The technical principle of the utility model is that: adding the copper-lead melt obtained by pyrometallurgical smelting into an electric arc furnace for smelting to obtain crude lead and a copper-lead slag melt, discharging the crude lead from a siphon port of the electric arc furnace, feeding the melt after most of lead is separated into a copper-lead slag separating device, heating, and performing high-temperature separation on slag and copper floating on the lead to obtain crude lead, matte with low lead content and heavy metal depleted slag. The copper-lead slag separation device has the effects of prolonging the heat preservation time of the molten slag, and layering and clarifying metals with different specific gravities, so that the content of valuable metals in the slag can be effectively reduced.

Compared with the prior art, the utility model has the advantages of:

the lead content of slag from a traditional electric arc furnace is more than 2 percent, and the lead content and the copper content in the copper matte are respectively about 30 percent and 15 percent. The process the utility model discloses a copper lead sediment piece-rate system handles back sediment and contains lead and fall to below 1%, and lead and copper content in the copper matte are about 5% and 45% respectively, have obtained fine economic benefits and environmental protection benefit.

Drawings

Fig. 1 is a schematic structural diagram of a copper-lead slag separation system in an embodiment of the utility model.

Fig. 2 is a schematic structural diagram of the copper-lead slag separating device in the embodiment of the utility model.

Illustration of the drawings: 1. a furnace body; 11. a first slag outlet; 12. a matte outlet; 13. a first lead bullion siphon inlet; 14. a flame port; 15. a smoke outlet; 16. a first copper-lead slag inlet; 17. a cover plate; 18. a pipeline; 2. a heat preservation structure; 3. an electric arc furnace; 31. a second slag outlet; 32. a second lead bullion siphon inlet; 33. and a second copper-lead slag inlet.

Detailed Description

The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.

Example 1:

as shown in fig. 1, the copper-lead slag separation system of the present embodiment includes an electric arc furnace 3 and a copper-lead slag separation device, and in the present embodiment, as shown in fig. 2, the copper-lead slag separation device is specifically an improved gas heating holding furnace.

The upper end of the electric arc furnace 3 is provided with a second copper-lead slag inlet 33, and the lower side wall is provided with a second crude lead siphon inlet 32 and a second slag outlet 31.

The coal gas heating heat preservation stove is including inlaying furnace body 1 in insulation construction 2, and furnace body 1's lateral wall has seted up first slag outlet 11, matte export 12 and first crude lead siphon mouth 13 from last to down in proper order. The first slag outlet 11, the matte outlet 12 and the first crude lead siphon port 13 are communicated with a pipeline 18, and the pipeline 18 penetrates through the heat preservation structure 2 and extends out of the heat preservation structure 2 so as to facilitate the discharge of layered metal slag.

A first copper-lead slag inlet 16 is formed at the upper end opening of the furnace body 1 so as to facilitate pouring of the copper-lead melt, a cover plate 17 for opening or closing the first copper-lead slag inlet 16 is arranged at the upper end of the furnace body 1, and a fire spraying port 14 and a smoke exhaust port 15 are formed in the cover plate 17.

In this embodiment, the molten copper-lead mass discharged from the second slag outlet 31 of the electric arc furnace 3 is dumped into the furnace body 1 by transportation. In other embodiments, a copper-lead slag inlet may be formed at the top or on the side wall of the furnace body 1, and the second slag outlet 31 is communicated with the copper-lead slag inlet of the furnace body 1 through a high-temperature pipeline.

The process of adopting the system to carry out heavy metal separation on the copper-lead molten mass coming out of the smelting furnace is as follows:

adding the copper-lead melt obtained by pyrometallurgical smelting into an electric arc furnace 3 for smelting to obtain a crude lead and copper-lead slag melt, discharging the crude lead from a siphon port of the electric arc furnace, feeding the melt after most of lead is separated into a gas heating holding furnace, heating by adopting gas, and performing high-temperature separation on slag and copper floating on the lead to obtain crude lead, matte with low lead content and heavy metal depleted slag. The coal gas heating holding furnace has the functions of prolonging the holding time of the molten slag and layering and clarifying metals with different specific gravities, thereby effectively reducing the content of valuable metals in the slag.

Practice shows that the lead content of slag from the traditional electric arc furnace is more than 2 percent, and the lead content and the copper content in the copper matte are respectively about 30 percent and 15 percent. The lead content of the slag is reduced to below 1 percent after the slag passes through an electric arc furnace and a gas heating and heat preserving furnace, the lead content and the copper content in the copper matte are respectively about 5 percent and 45 percent, and the economic benefit and the environmental protection benefit are well obtained.

Example 2

Similar to the embodiment 1, the difference is that the side wall of the furnace body 1 is provided with a first copper-lead slag inlet 16.

The above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.

Claims (8)

1. The copper-lead slag separation device is characterized by comprising a furnace body (1) embedded in a heat insulation structure (2), wherein a first slag outlet (11), a matte outlet (12) and a first crude lead siphon inlet (13) are sequentially formed in the side wall of the furnace body (1) from top to bottom; the top of the furnace body (1) is provided with a heating device;

the top of the furnace body (1) is provided with a smoke outlet (15); the top or the side wall of the furnace body (1) is provided with a first copper-lead slag inlet (16).

2. The copper-lead slag separating device according to claim 1, characterized in that the upper end of the furnace body (1) is provided with a cover plate (17) for opening or closing the first copper-lead slag inlet (16).

3. The copper-lead slag separating device according to claim 2, wherein the heating device is a flame jet (14).

4. The copper-lead slag separating device according to claim 3, characterized in that the fire-spraying opening (14) and the smoke-discharging opening (15) are both opened on the cover plate (17).

5. The copper-lead slag separating device according to claim 1, characterized in that the first slag outlet (11), the matte outlet (12) and the first lead bullion siphon inlet (13) are communicated with a pipeline (18), and the pipeline (18) penetrates through the heat preservation structure (2) and extends out of the heat preservation structure (2).

6. A copper-lead slag separation system comprising an electric arc furnace (3) having a second slag outlet (31), characterized by further comprising a copper-lead slag separation device according to any one of claims 1-5 for processing copper-lead melt discharged from the second slag outlet (31).

7. The copper-lead slag separation system of claim 6, wherein a second crude lead siphon port (32) is further formed at the lower part of the electric arc furnace (3), and a second copper-lead slag inlet (33) is formed at the upper end of the electric arc furnace (3).

8. The copper-lead slag separation system according to claim 6 or 7, the second slag outlet (31) of the electric arc furnace (3) being in communication with the first copper-lead slag inlet (16) of the copper-lead slag separation device through a pipe or chute.

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