阅读说明：本技术 一种闪速吹炼炉熔剂循环利用系统及其使用方法 (Flash converting furnace flux recycling system and use method thereof ) 是由 来有寿 张建平 许俊 陈文武 朱其峰 马鹏飞 李钰平 于 2020-12-10 设计创作，主要内容包括：本发明公开了一种闪速吹炼炉熔剂循环利用系统及其使用方法,包括通过传送装置依次首尾连接的水淬沉渣池、混料仓、铜锍立磨、铜锍仓、闪速吹炼炉、水淬系统及控制系统；所述水淬沉渣池上放设有加料罐及废料堆积部,内部设有出渣装置；所述水淬沉渣池的底部设有集料斜坡；在所述集料斜坡上设有吹料装置；所述加料罐内盛装的物料与闪速吹炼炉内的部分熔剂成分相同；所述出渣装置与混料仓的入口之间设有送料输送带；所述水淬沉渣池内部设有PH值在线检测系统；所述加料罐的出口设有电动阀门。本发明装置使用生石灰进行水淬回水的中和,同时还能回收多余的生石灰及水淬沉淀物,并投入闪速吹炼炉加以利用,节约了生产成本。(The invention discloses a flash converting furnace flux recycling system and a using method thereof, wherein the flash converting furnace flux recycling system comprises a water quenching slag settling tank, a mixing bin, a copper matte vertical mill, a copper matte bin, a flash converting furnace, a water quenching system and a control system which are sequentially connected end to end through a conveying device; the water quenching slag settling tank is provided with a feeding tank and a waste material accumulation part, and a slag discharging device is arranged inside the water quenching slag settling tank; an aggregate slope is arranged at the bottom of the water quenching slag settling tank; a blowing device is arranged on the aggregate slope; the material contained in the charging tank has the same component as part of the flux in the flash converting furnace; a feeding conveyer belt is arranged between the slag discharging device and an inlet of the mixing bin; a PH value online detection system is arranged in the water quenching slag settling tank; an outlet of the feeding tank is provided with an electric valve. The device uses the quick lime to neutralize the water quenching return water, can recover redundant quick lime and water quenching sediments, and is put into the flash converting furnace for utilization, thereby saving the production cost.)

1. A flash converting furnace flux cyclic utilization system which characterized in that: the device comprises a water quenching slag settling tank (1), a mixing bin (2), a copper matte vertical mill (3), a copper matte bin (4), a flash converting furnace (6), a water quenching system (7) and a control system which are sequentially connected end to end through a conveying device; a feeding tank (9) and a waste accumulation part (12) are arranged on the water quenching slag settling tank (1), and a slag discharging device (11) is arranged inside the water quenching slag settling tank; the inlet of the slag discharging device (11) is positioned at the bottom of the water quenching slag settling tank (1), and the outlet of the slag discharging device is communicated with the water quenching slag settling tank (1) and positioned above the waste material accumulation part (12); an aggregate slope (10) is arranged at the bottom of the water quenching slag settling tank (1); a blowing device is arranged on the aggregate slope (10); the material contained in the charging tank (9) has the same component as part of the flux in the flash converting furnace (6); a feeding conveyer belt (13) is arranged between the slag discharging device (11) and the inlet of the mixing bin (2); a PH value online detection system is arranged in the water quenching slag settling tank (1); an electric valve is arranged at the outlet of the feeding tank (9); and the PH value online detection system and the electric valve are both connected with the control system.

2. A flash converting furnace flux recycling system according to claim 1, characterized in that: a flux bin (5) is also connected between the copper matte bin (4) and the flash converting furnace (6); the outlet of the flux bin (5) is connected with the flash converting furnace (6); and a copper matte nozzle is arranged at the inlet of the flash converting furnace (6).

3. A flash converting furnace flux recycling system according to claim 1, characterized in that: the blowing device comprises a circulating pump (14) and a blowing spray gun (15); the circulating pump (14) is arranged above the water quenching slag settling tank (1); the blowing gun (15) is arranged at the top of the aggregate slope (10); the inlet of the circulating pump (14) is connected with a pipeline which is introduced into the water quenching slag settling tank (1); the outlet of the circulating pump (14) is connected with a blowing spray gun (15) through a pipeline.

4. A flash converting furnace flux recycling system according to claim 1, characterized in that: the inlet of the slag tapping device (11) is positioned at the lowest position of the collecting slope (10).

5. A flash converting furnace flux recycling system according to claim 1, characterized in that: and a stirring rod (8) is arranged in the mixing bin (2).

6. A flash converting furnace flux recycling system according to claim 1, characterized in that: a chute is arranged between the flash converting furnace (6) and the water quenching system (7).

7. A flash converting furnace flux recycling system according to claim 1, characterized in that: the materials contained in the feeding tank (9) and the flux in the flash converting furnace (6) are both insoluble in water.

8. A method of using a flash converting furnace flux recycling system as claimed in any one of claims 1 to 7 wherein: the method comprises the following steps:

1) smelting: copper matte raw materials used for copper smelting are added into the copper matte bin (4); adding a flux into the flux bin (5) to be used as a flux for copper smelting; the flux comprises limestone or quicklime; copper matte and a fusing agent are simultaneously added into a flash converting furnace (6) for smelting;

2) discharging and water quenching: after smelting is finished, discharging slag and copper liquid in the flash converting furnace (6) into a water quenching system (7) for water quenching, and rapidly cooling; the water generated in the water quenching process is acidic and is discharged into a water quenching slag settling tank (1) with settling particles;

3) acid-base regulation: adding quicklime into a feeding tank (9) in advance; the PH value on-line detection system detects the PH value in the water quenching slag settling tank (1) at any time; when the PH value is less than 7, an electric valve at the outlet of the feeding tank (9) is opened, quicklime is put into the water quenching slag settling tank (1), and the quicklime is automatically stopped to be put into the water quenching slag settling tank (1) after the PH value of the solution in the water quenching slag settling tank (1) is more than or equal to 7;

4) and (3) recovering the flux: according to the condition of sediment in the water quenching slag settling tank (1), a slag discharging device (11) is started, and the sediment at the bottom of the water quenching slag settling tank (1) is sent to a waste material accumulation part (12); then the sediment is conveyed into a mixing bin (2) along with a conveying belt (13), and is stirred and mixed by a stirring rod (8); and then, the materials in the mixing bin (2) enter a copper matte vertical mill (3) for grinding and drying, and are finally sent to a flash copper matte bin (4) to be stored together with copper matte raw materials, and the materials are added into a flash converting furnace (6) along with the copper matte raw materials during smelting, so that quicklime used for adjusting the pH value in the water quenching slag settling tank (1) is recycled.

Technical Field

The invention belongs to the technical field of metal smelting equipment, and relates to a flash converting furnace flux recycling system and a using method thereof.

Background

In the traditional copper smelting process, water quenching return water is acidic, the pH value needs to be adjusted to 7 by using liquid alkali, and meanwhile, water quenching precipitates are treated as waste residues, so that waste is caused. The liquid caustic soda has high danger coefficient in the transportation and use process, and the fluctuation is large when the PH value is adjusted, so that the PH value of water quenching return water is easily too high, and energy waste is caused; meanwhile, because the flash converting furnace is produced by using a calcium-iron slag system, limestone or quicklime is required to be added as a fusing agent during smelting, alkali liquor is also required to be added into the neutralized water quenching return water, and alkali cannot be recovered during the neutralized water quenching return water so as to be used by the flash converting furnace, so that certain waste is caused.

Disclosure of Invention

The invention aims to provide a flash converting furnace flux recycling system and a using method thereof aiming at the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

a flash converting furnace flux cyclic utilization system comprises a water quenching slag settling tank, a mixing bin, a copper matte vertical mill, a copper matte bin, a flash converting furnace, a water quenching system and a control system which are sequentially connected end to end through a conveying device; the water quenching slag settling tank is provided with a feeding tank and a waste material accumulation part, and a slag discharging device is arranged inside the water quenching slag settling tank; the inlet of the slag discharging device is positioned at the bottom of the water quenching slag settling tank, and the outlet of the slag discharging device is communicated with the water quenching slag settling tank and positioned above the waste material accumulation part; an aggregate slope is arranged at the bottom of the water quenching slag settling tank; a blowing device is arranged on the aggregate slope; the material contained in the charging tank has the same component as part of the flux in the flash converting furnace; a feeding conveyer belt is arranged between the slag discharging device and an inlet of the mixing bin; a PH value online detection system is arranged in the water quenching slag settling tank; an electric valve is arranged at the outlet of the feeding tank; and the PH value online detection system and the electric valve are both connected with the control system.

The water quenching slag settling tank is used for containing water quenching return water; the feeding tank is used for containing alkali for adjusting the pH value of the water quenching return water; the waste material accumulation part is used for accumulating the sediment discharged by the slag discharging device from the water quenching sediment tank; the aggregate slope is used for accumulating sediments; the blowing device is used for blowing the sediments to the bottom of the aggregate slope; the feeding conveyer belt sends the sediments to a mixing bin; the PH value on-line detection system can monitor the PH value of the solution in the water quenching slag settling tank on line in real time, so as to control the opening/closing of an electric valve on the feeding tank, and add alkali into the water quenching slag settling tank to adjust the PH value; the mixing bin is used for placing copper smelting raw materials; the copper matte vertical mill is used for crushing and drying sediments; the copper matte bin is used for placing copper matte raw materials; the flash converting furnace is used for smelting copper; the water quenching system is used for water quenching copper which is just discharged from the flash converting furnace.

As a further technical improvement, a flux bin is connected between the copper matte bin and the flash converting furnace; the outlet of the flux bin is connected with the flash converting furnace; and a copper matte nozzle is arranged at the inlet of the flash converting furnace. The flux bin is used for containing a solvent during smelting in the flash converting furnace; the flash converting furnace is used for feeding copper matte into the flash converting furnace.

As a further technical improvement, the blowing device comprises a circulating pump and a blowing spray gun; the circulating pump is arranged above the water quenching slag settling tank; the blowing gun is arranged at the top of the aggregate slope; the inlet of the circulating pump is connected with a pipeline which is introduced into the water quenching slag settling tank; and the outlet of the circulating pump is connected with a blowing spray gun through a pipeline. The circulating pump pumps water in the water quenching slag settling tank, and the water is sprayed out by the blowing spray gun to blow the sediments into the bottom of the aggregate slope.

As a further technical improvement, the inlet of the tapping device is located at the lowest position of the collection ramp. The design can better send the sediment accumulated at the bottom of the aggregate slope out of the water quenching sediment tank.

As a further technical improvement, a stirring rod is arranged in the mixing bin. The stirring rod is used for stirring the materials in the mixing bin to ensure that the materials are uniformly mixed.

As a further technical improvement, a chute is arranged between the flash converting furnace and the water quenching system. The chute is used for introducing copper smelted by the flash converting furnace into the water quenching system.

As a further technical improvement, the materials contained in the charging tank and the flux in the flash converting furnace are both insoluble in water.

The use method of the flash converting furnace flux recycling system comprises the following steps:

1) smelting: adding copper matte raw materials for copper smelting into the copper matte bin; adding a flux into the flux bin to be used as a flux for smelting copper; the flux comprises limestone or quicklime; adding copper matte and a fusing agent into a flash converting furnace at the same time, and smelting;

2) discharging and water quenching: after smelting is finished, discharging slag and copper liquid in the flash converting furnace into a water quenching system for water quenching, and rapidly cooling; the water produced in the water quenching process is acidic and is discharged into a water quenching slag settling tank with the precipitated particles;

3) acid-base regulation: adding quicklime into a charging tank in advance; the PH value on-line detection system detects the PH value in the water quenching slag settling tank at any moment; when the PH value is less than 7, an electric valve at the outlet of the feeding tank is opened, quicklime is put into the water quenching slag settling tank, and the quicklime is automatically stopped to be put into the water quenching slag settling tank after the PH value of the solution in the water quenching slag settling tank is greater than or equal to 7;

4) and (3) recovering the flux: according to the condition of sediments in the water quenching slag settling tank, the slag discharging device is started, and the sediments at the bottom of the water quenching slag settling tank are sent to the waste material accumulation part; then the sediment is conveyed into a mixing bin along with a feeding conveyor belt, and a stirring rod is used for stirring and mixing the materials; and then, the materials in the mixing bin enter a copper matte vertical mill for grinding and drying, and are finally sent to a flash copper matte bin to be stored together with copper matte raw materials, and the materials are added into a flash converting furnace together with the copper matte raw materials during smelting, so that quicklime used for adjusting the pH value in a water quenching slag settling tank is recycled.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the pH value is neutralized by adding calcium oxide into the water quenching sedimentation tank, and the redundant calcium oxide is recycled to be used as the solvent of the flash converting furnace, so that the pH value of the water quenching sedimentation tank is easy to adjust, the raw materials are saved, and the production cost is reduced.

2. The device can recycle and utilize the water quenching sediment, and changes the traditional method of treating the water quenching sediment as waste residue.

3. The device can collect the sediments together through the aggregate slope and the blowing device, and is convenient for the slag discharging device to discharge the sediments out of the water quenching sedimentation tank.

Drawings

Fig. 1 is a schematic view of the overall structure of the device.

Reference numerals: 1-water quenching slag settling tank, 2-mixing bin, 3-copper matte vertical mill, 4-copper matte bin, 5-flux bin, 6-flash converting furnace, 7-water quenching system, 8-stirring rod, 9-charging tank, 10-aggregate slope, 11-slag discharging device, 12-waste accumulation part, 13-feeding conveyer belt, 14-circulating pump and 15-blowing spray gun.

Detailed Description

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

Example 1:

as shown in fig. 1, a flash converting furnace flux recycling system comprises a water quenching slag settling tank 1, a mixing bin 2, a copper matte vertical mill 3, a copper matte bin 4, a flash converting furnace 6, a water quenching system 7 and a control system which are sequentially connected end to end through a conveying device; the water quenching slag settling tank 1 is provided with a feeding tank 9 and a waste material accumulation part 12, and a slag discharging device 11 is arranged inside the water quenching slag settling tank; the inlet of the slag discharging device 11 is positioned at the bottom of the water quenching slag settling tank 1, and the outlet of the slag discharging device is communicated with the water quenching slag settling tank 1 and positioned above the waste material accumulation part 12; the bottom of the water quenching slag settling tank 1 is provided with an aggregate slope 10; a blowing device is arranged on the aggregate slope 10; the material contained in the charging tank 9 has the same component as part of the flux in the flash converting furnace 6; a feeding conveyer belt 13 is arranged between the slag discharging device 11 and the inlet of the mixing bin 2; a PH value online detection system is arranged in the water quenching slag settling tank 1; an electric valve is arranged at the outlet of the feeding tank 9; and the PH value online detection system and the electric valve are both connected with the control system.

A flux bin 5 is also connected between the copper matte bin 4 and the flash converting furnace 6; the outlet of the flux bin 5 is connected with the flash converting furnace 6; and a copper matte nozzle is arranged at the inlet of the flash converting furnace 6.

The blowing device comprises a circulating pump 14 and a blowing spray gun 15; the circulating pump 14 is arranged above the water quenching slag settling tank 1; the blowing gun 15 is arranged at the top of the aggregate slope 10; the inlet of the circulating pump 14 is connected with a pipeline which is introduced into the water quenching slag settling tank 1; the outlet of the circulating pump 14 is connected with a blowing spray gun 15 through a pipeline.

The inlet of the tapping device 11 is located at the lowest position of the collection ramp 10.

The materials contained in the feeding tank 9 and the flux in the flash converting furnace 6 are both insoluble in water.

The use method of the flash converting furnace flux recycling system comprises the following steps:

smelting: copper matte raw materials used for copper smelting are added into the copper matte bin 4; adding a flux into the flux bin 5 to be used as a flux for copper smelting; the flux comprises limestone or quicklime; adding copper matte and a fusing agent into the flash converting furnace 6 at the same time, and smelting;

discharging and water quenching: after smelting is finished, discharging slag and copper liquid in the flash converting furnace 6 into a water quenching system 7 for water quenching, and rapidly cooling; the water produced in the water quenching process is acidic and is discharged into a water quenching slag settling tank 1 with the settling particles;

acid-base regulation: adding quicklime into a feeding tank 9 in advance; the PH value on-line detection system constantly detects the PH value in the water quenching slag settling tank 1; when the PH value is less than 7, an electric valve at the outlet of the feeding tank 9 is opened, quicklime is put into the water quenching slag settling tank 1, and the quicklime is automatically stopped to be put into the water quenching slag settling tank 1 after the PH value of the solution in the water quenching slag settling tank 1 is greater than or equal to 7;

and (3) recovering the flux: according to the condition of the sediment in the water quenching slag settling tank 1, the slag discharging device 11 is started, and the sediment at the bottom of the water quenching slag settling tank 1 is sent to the waste material accumulation part 12; then the sediment is sent into the mixing bin 2 along with the feeding conveyer belt 13 for mixing; and then, the materials in the mixing bin 2 enter a copper matte vertical mill 3 for grinding and drying, and are finally conveyed to a flash copper matte bin 4 to be stored together with copper matte raw materials, and the materials are added into a flash converting furnace 6 together with the copper matte raw materials during smelting, so that the quicklime used for adjusting the pH value in the water quenching slag settling tank 1 is recycled.

Example 2:

this example differs from example 1 in that: and a stirring rod 8 is arranged in the mixing bin 2.

The method of use of this example is the same as example 1.

Example 3:

this example differs from example 2 in that: a chute is arranged between the flash converting furnace 6 and the water quenching system 7.

The method of use of this example is the same as example 1.

Example 4:

this example differs from example 3 in that: and a stirring rod 8 is arranged in the mixing bin 2. A chute is arranged between the flash converting furnace 6 and the water quenching system 7.

The method of use of this example is the same as example 1.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.