CN216427375U

CN216427375U - Copper smelting device

Info

Publication number: CN216427375U
Application number: CN202122577465.1U
Authority: CN
Inventors: 钟勇; 曾平生; 刘冬根; 熊建军; 刘永富; 张毅
Original assignee: Shaoguan Smelting Factory Of Shenzhen Zhongjin Lingnan Nonfemet Co ltd
Current assignee: Shaoguan Smelting Factory Of Shenzhen Zhongjin Lingnan Nonfemet Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-05-03
Anticipated expiration: 2031-10-25

Abstract

The invention relates to a copper smelting device, and relates to the technical field of metallurgy. The device comprises a furnace body, wherein a furnace chamber is arranged in the furnace body, a burner nozzle assembly, a material port, a smoke outlet, a throat and a plurality of oxygen lance holes formed in the furnace body are arranged on the furnace body, the furnace body is connected with a rotating mechanism through a gear, the rotating mechanism is used for driving the furnace body to rotate, and the throat is connected with a settling chamber; and the oxygen lance is inserted into the oxygen lance hole and is used for continuously blowing bottom blowing gas into the furnace chamber. The device utilizes the oxygen rifle to blow in the copper metallurgy device with the gas of being rich in oxygen from supreme multi-angle down, through little and the even oxygen-enriched bubble that distributes, fully and the impurity in the copper liquid contacts each other, realize better oxidation edulcoration effect.

Description

Copper smelting device

Technical Field

The utility model relates to the technical field of metallurgy, especially, relate to a copper smelting device.

Background

The smelting technology of copper is mainly pyrometallurgy, which generally includes the steps of carrying out matte smelting on a copper-containing material in a closed blast furnace, an electric furnace or a flash furnace, and then feeding the produced molten matte into a converter for converting to obtain blister copper. When the smelting raw material is a copper-containing material, smelting can be carried out in various forms of a copper converter burning diesel oil, a small blast furnace or a bottom blowing furnace. Wherein, the copper converter of burning diesel oil, what adopt is that diesel oil provides the energy, carries out the copper smelting through the end burning, and air-blower and steel pipe input air, the converting in-process will lead to the steel pipe that has compressed air at the fire door through the workman and insert the copper liquid, from top to bottom, send into the copper liquid with the air to with the impurity oxidation slagging scorification in the copper liquid. In the process, the angle of the air compression pipe needs to be manually adjusted to oxidize and slagging all impurities in the molten copper as fast as possible. However, the operation process is not only dangerous due to high temperature, but also the air compression pipe is adjusted manually, which is not ideal for removing impurities in the copper liquid by oxidation, and the blowing efficiency is low. Moreover, the air compression pipe has serious loss due to high temperature in the molten copper, and the production cost of enterprises is increased.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a copper smelting device, the device utilize the oxygen rifle to blow in the copper smelting device with the gas that is rich in oxygen from supreme multi-angle down, through little and the even oxygen boosting bubble that distributes, abundant and the impurity in the copper liquid contacts each other, realize better oxidation edulcoration effect.

The utility model provides a copper smelting device, include:

the furnace body is internally provided with a furnace chamber, the furnace body is provided with a burner assembly, a material port, a smoke outlet, a throat and a plurality of oxygen lance holes arranged on the furnace body, the furnace body is connected with a rotating mechanism through a gear, the rotating mechanism is used for driving the furnace body to rotate, and the throat is connected with a settling chamber; and

and the oxygen lance is inserted into the oxygen lance hole and is used for continuously blowing bottom blowing gas into the furnace chamber.

In one embodiment, the furnace body is a cylindrical container, a smoke hood is arranged above the smoke exhaust port, a copper-discharging slag-discharging runner is arranged below the smoke exhaust port, and the smoke hood and the copper-discharging slag-discharging runner are both cooled by a cooler.

In one embodiment, the burner assembly comprises: the burner comprises a burner opening, a burner and a burner water jacket, wherein the burner is arranged in the burner opening, the burner is detachably connected with the burner opening, the included angle between the burner and the horizontal direction is 10-20 degrees, the burner water jacket is sleeved on the burner opening, and the burner water jacket is cooled by a cooler.

In one embodiment, the cooler is cooled by circulating cooling water.

In one embodiment, the included angle between the axial direction of the oxygen lance and the vertical direction is 15-110 degrees.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model provides a copper smelting device, through the oxygen rifle with the gas of rich oxygen from supreme adding copper smelting device down, through little and the even oxygen boosting bubble that distributes, abundant and the impurity in the copper liquid contacts each other, realizes better oxidation edulcoration effect.

Drawings

FIG. 1 is a plan view of a copper metallurgy apparatus according to example 1; wherein 100 is a furnace body, 200 is a rotating mechanism, 300 is a settling chamber, 400 is an oxygen lance, 500 is a copper-discharging slag-discharging launder, 111 is a burner mouth, 120 is a material mouth, 130 is a throat mouth, and 140 is an oxygen lance hole.

FIG. 2 is a cross-sectional view of the copper smelting apparatus in example 1, wherein 400 is a lance.

FIG. 3 is a left side view of the copper smelting apparatus in example 1, wherein 120 is a material port, 130 is a throat, 400 is an oxygen lance, 500 is a copper-discharging slag-discharging launder, and 600 is a hood.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "coupled" to another element, it can be directly coupled to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Defining:

the converting of the utility model: refers to a process of pyrometallurgical operation, usually carried out in a converter.

Quartz sand: is quartz particles formed by crushing and processing quartz stones.

Melting liquid: refers to a melt formed from two or more metals.

Blowing slag: refers to the slag produced by converter blowing.

Grade: refers to the content of useful components or useful minerals in the ore (or beneficiation product).

And (3) burner: a ring-shaped pipe air inlet burner is a general name of a device which sprays fuel and air in a certain mode, mixes (or sprays) and burns.

Later-stage slag of the copper dross smelting furnace: the copper dross is treated by a dross smelting furnace and then stands for layering, and the copper-containing material is later-stage slag generated between earlier-stage slag and crude lead due to density.

Reagents, materials and equipment used in the embodiment are all commercially available sources unless otherwise specified; unless otherwise specified, all the experimental methods are routine in the art.

Example 1

An oxygen-enriched bottom blowing copper smelting process.

The oxygen-enriched bottom blowing copper smelting process comprises the following steps:

first-stage blowing: taking the later-stage slag of a copper dross smelting furnace to be treated as a first-stage material, adding the later-stage slag into a copper smelting device, adding quartz sand, igniting and heating to a first preset melting temperature, melting the first-stage material into molten liquid, adjusting the melting temperature to the first preset converting temperature when the liquid level height of the molten liquid reaches a preset value, continuously blowing a first bottom blowing gas with preset oxygen content into the copper smelting device from the bottom of the copper smelting device by using an oxygen lance, performing first-stage converting, and discharging converting slag;

middle-stage blowing: taking later-stage slag of a copper dross smelting furnace to be treated as a middle-stage material, adding the middle-stage material into the copper smelting device, adding quartz sand, adjusting the converting temperature to a second preset converting temperature, melting the middle-stage material into molten liquid, continuously blowing a second bottom blowing gas with a preset oxygen content into the copper smelting device from the bottom of the copper smelting device by using the oxygen lance, performing middle-stage converting, and discharging converting slag; repeating the middle-stage converting step until the preset converting material is fed;

and (3) blowing in the later stage: adding calcium oxide and sodium carbonate into the copper smelting device, adjusting the converting temperature to a third preset converting temperature, continuously blowing a third bottom blowing gas with preset oxygen content into the copper smelting device from the bottom of the copper smelting device by using the oxygen lance, performing later converting, and discharging converting slag;

copper discharging: and when the later stage converting discharges the converting slag, taking the molten liquid in the copper smelting device, monitoring the copper grade in the molten liquid, adjusting the converting temperature to a preset copper discharge temperature when the copper grade in the molten liquid reaches more than 95%, and discharging the molten liquid, namely the molten copper liquid.

The preset converting material is the sum of the first-stage material and the middle-stage material, and the feeding amount of the preset converting material is adjusted according to the size of the copper smelting device.

The copper smelting device is shown in a plan view in FIG. 1, a cross section in FIG. 2 and a left side view in FIG. 3, and comprises:

the furnace comprises a furnace body 100, wherein a furnace chamber is arranged in the furnace body 100, a burner nozzle assembly, a material port 120, a smoke outlet, a throat 130 and a plurality of oxygen lance holes 140 are arranged on the furnace body, the furnace body is connected with a rotating mechanism 200 through a gear, the rotating mechanism 200 is used for driving the furnace body to rotate, and the throat 130 is connected with a settling chamber 300; and

and an oxygen lance 400 inserted into the oxygen lance hole 140 for continuously blowing bottom blowing gas into the furnace chamber.

Furnace body 100 is cylindrical container, the exhaust port top is equipped with petticoat pipe 600, material mouth 120 below is equipped with row copper sediment chute 500, petticoat pipe 600 row copper sediment chute 500 cools off by the cooler. The burner assembly comprises: the burner comprises a burner opening 111, a burner and a burner water jacket, wherein the burner is arranged in the burner opening 111, the burner is detachably connected with the burner opening 111, the included angle between the burner and the horizontal direction is 10-20 degrees, the burner water jacket is externally sleeved on the burner opening, and the burner water jacket is cooled by a cooler. The included angle between the axial direction of the oxygen lance and the vertical direction is 15-110 degrees.

In the embodiment, in the first stage converting step, 26-28t of the later stage slag of the copper dross smelting furnace to be processed is taken and sent into a copper smelting device through a conveying belt, 500kg of quartz sand is added, after the charging is finished, the furnace mouth of the converter is rotated to a horizontal angle, the molten material is ignited, the temperature is raised to 1150-1350 ℃, the later stage slag of the copper dross smelting furnace is melted into molten liquid, when the liquid level height of the molten liquid reaches a preset value of 10cm, the temperature is adjusted to 1100-1200 ℃, oxygen-rich bottom blowing gas is continuously blown into the device from the bottom of the copper smelting device by an oxygen lance, and the oxygen concentration of the bottom blowing gas is controlled to be 26-29%. In the embodiment, when blowing is started, the direction of the oxygen lance is adjusted to ensure that the bottom blowing angle is 45 degrees, the bottom blowing angle is gradually increased according to the height change of the liquid level of molten liquid in the blowing process, the bottom blowing angle is increased by 5 degrees every half hour, materials which are not melted at the bottom of the furnace are stirred until all the materials are completely melted, first-stage blowing is carried out, then the furnace body is rotated until the furnace mouth is horizontal, the solution is kept still for 10-15min, the furnace body is rotated until the furnace mouth is inclined downwards by a certain angle, and blowing slag is discharged after the furnace body is aligned with a launder;

in the middle-stage converting step, 3-5t of the later-stage slag of the copper dross smelting furnace to be processed is taken each time and is sent into the copper smelting device through a conveying belt, the single-furnace feeding amount is determined according to the melt liquid level in the furnace, the melt liquid level is generally controlled not to exceed about 90cm, the total single-furnace feeding amount is controlled to be 85t-90t, the whole feeding can be completed, 100-150kg of quartz sand is added, middle-stage converting is carried out while feeding, the temperature is adjusted to 1150-1300 ℃, oxygen-rich bottom-blowing gas is continuously blown into the device from the bottom of the copper smelting device by an oxygen lance, and the oxygen concentration of the bottom-blowing gas is controlled to be 26-29%. Frequently observing a copper smelting device, checking whether liquid flows out or not, immediately stopping feeding if the liquid flows out, timely cleaning before solidification, simultaneously performing middle-stage blowing, then rotating a furnace body to be horizontal to a furnace mouth, standing the solution for 10-15min, rotating the furnace body to be inclined downwards by a certain angle until the furnace mouth is aligned to a launder, and discharging blowing slag;

in the later stage converting step, 75kg-125kg of calcium oxide and 50kg-150kg of sodium carbonate are added into a furnace mouth, the temperature is adjusted to 1100-1200 ℃, oxygen-rich bottom-blown gas is continuously blown into the device from the bottom of the copper smelting device by an oxygen lance, and the oxygen concentration of the bottom-blown gas is controlled to be about 21 percent. Performing later blowing, then rotating the furnace body to the furnace mouth level, standing the solution for 10-15min, rotating the furnace body to the furnace mouth to incline downwards at a certain angle, aligning to a launder, and discharging blown slag;

in the copper discharging step, when blowing slag is discharged in later-stage hammering, sampling and observing metal in the furnace, and performing copper discharging operation when the later-stage blowing requires that the blowing is performed until the grade of crude copper reaches more than 96%, adjusting the temperature to 1000-1150 ℃, and discharging molten liquid in the furnace to obtain molten copper liquid.

In this embodiment, the cooler is cooled by circulating cooling water.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A copper smelting device is characterized by comprising:

2. A copper smelting device according to claim 1, wherein the furnace body is a cylindrical container, a smoke hood is arranged above the smoke exhaust port, a copper and slag discharging chute is arranged below the smoke exhaust port, and the smoke hood and the copper and slag discharging chute are both cooled by a cooler.

3. A copper metallurgy apparatus according to claim 1, wherein the burner assembly comprises: the burner comprises a burner opening, a burner and a burner water jacket, wherein the burner is arranged in the burner opening, the burner is detachably connected with the burner opening, the included angle between the burner and the horizontal direction is 10-20 degrees, the burner water jacket is sleeved on the burner opening, and the burner water jacket is cooled by a cooler.

4. A copper smelting plant according to claim 1 wherein the angle between the axial direction of the lance jets and the vertical direction is between 15 ° and 110 °.