阅读说明：本技术 一种封闭运转的二次元连续冶炼阳极铜生产线 (Closed-running two-dimensional continuous smelting anode copper production line ) 是由 崔志祥 王智 王海滨 边瑞民 侯鹏 崔文昭 杜武钊 郑军涛 于鹏飞 陈永鑫 于 2019-08-06 设计创作，主要内容包括：本发明公开一种封闭运转的二次元连续冶炼阳极铜生产线,包括多元熔炼炉、火精炉、浇铸圆盘和导流槽。其特征是通过对多元熔炼炉和火精炉的喷枪布排方式、位置和射流方向及供气的种类和比值的动态调控,提高反应过程的烈度和深度,改善铜锍的运动模式和速率,由多元熔炼炉产出含铜75—78%的亚白冰铜,火精炉产生含铜高于99.2%的阳极铜。在多元熔炼炉、火精炉和浇铸圆盘之间设置封闭的导流槽,不间断的输运铜锍,完成阳极铜铸锭生产,与现有技术相比,本发明二次元连续冶炼阳极铜,使用生产设备少、布排安装紧凑、流程短、建设投资省、运转成本低、节能、环保、安全,因而,具有很好的推广使用价值。(The invention discloses a closed-running two-dimensional continuous anode copper smelting production line, which comprises a multi-element smelting furnace, a fire refining furnace, a casting disc and a diversion trench. The method is characterized in that the intensity and the depth of a reaction process are improved and the movement mode and the speed of copper matte are improved by dynamically regulating and controlling the arrangement mode, the position, the jet flow direction and the type and the ratio of gas supply of a multi-element smelting furnace and a fire refining furnace, wherein the multi-element smelting furnace produces the copper matte with 75-78% of copper, and the fire refining furnace produces the anode copper with the copper content higher than 99.2%. Compared with the prior art, the invention has the advantages that the anode copper is smelted in a secondary element continuous mode, the used production equipment is less, the arrangement and installation are compact, the flow is short, the construction investment is saved, the operation cost is low, the energy is saved, the environment is protected, and the safety is realized, so the invention has good popularization and use values.)

1. A closed-running production line for continuously smelting anode copper by secondary elements comprises a multi-element smelting furnace, a fire refining furnace, a casting disc and a diversion trench, and is characterized in that the intensity and the depth of a reaction process in the furnace are improved and the motion mode and the speed of copper matte are improved by dynamically regulating and controlling the arrangement mode, the position and the jet flow direction of spray guns of the multi-element smelting furnace and the type and the ratio of gas supply, and the multi-element smelting furnace produces the copper matte with 75-78% of copper content; the reaction processes of oxidation replacement, oxidation, redox and slag removal of the copper matte are completed by dynamically regulating and controlling the arrangement mode, the position and the jet flow direction of spray guns of the heat refining furnace and the type and the ratio of gas supply, and manufacturing a longitudinal segmental and differential reaction temperature environment, and anode copper with copper content of more than 99.2 percent is generated by the heat refining furnace; the multi-element smelting furnace and the fire refining furnace are connected and communicated by a closed diversion trench to transport copper matte, the fire refining furnace and the casting disc are used for transporting and discharging copper matte through a half-closed diversion trench to cast to form a continuous closed secondary element smelting anode copper production line, and in addition, each part also has the following specific morphological structure and operation characteristics;

(1) the multi-element smelting furnace is a cylindrical horizontal converter, a plurality of charging ports are arranged at the middle section of the upper surface of the furnace wall and are deviated to a matte discharge port end, a main flue is arranged close to the inner side of a slag discharge end, an auxiliary flue is arranged close to the inner side of the matte discharge port end, two rows of bottom blowing spray guns which are arranged in a centripetal direction and staggered mode are arranged on one side of a longitudinal center line of the lower surface of the furnace wall, a plurality of horizontal spray guns which are arranged in an equidistant mode are arranged on one line of the middle lower part of the same side, a slag discharge port is arranged on;

(2) the fine fire furnace is two cylindrical horizontal converters which are arranged in parallel and have completely the same morphological structure, volume and function, a flue is arranged on the upper surface of the furnace wall close to a matte injection port end, two rows of centripetal direction bottom blowing spray guns are arranged on one side of the longitudinal center line of the lower surface of the furnace wall, the bottom blowing spray guns are distributed in a staggered manner, a slag outlet is arranged at the middle lower part of the matte injection port end on the same side, the matte injection port is arranged at the middle lower part of the end wall of the furnace wall on one side, and a matte placement port is;

(3) the multi-element smelting furnace and the fire refining furnace are supported and fixed by fixed support frames arranged at the inner sides of two ends, and the angular rotation of the furnace body is completed by an annular gear rack attached to the edge of the fixed support frame at one end through the driving of a motor;

(4) the spray gun is of a sleeve structure with an inner layer and an outer layer, a plurality of interfaces are respectively led out from the inner layer and the outer layer and are respectively connected with oxygen, air, nitrogen and natural gas sources, and the type, the speed and the ratio of gas supply are timely and accurately controlled and adjusted by a control room;

(5) the casting disc is a circular disc which is provided with a plurality of casting grooves at the periphery of two sleeves, the rotating speed corresponds to the supply rate of the copper matte flow, and the processes of flow injection, temperature reduction, condensation and copper ingot lifting are alternately finished;

(6) the diversion trench is composed of a chute and a slot cover, wherein the chute is combined by customizing a U-shaped refractory brick, heat preservation filler and a steel plate shell, the slot cover is provided with a burner, a closed or semi-closed pipeline for continuously conveying copper matte is arranged, the copper matte between the multi-element smelting furnace and the two finishing furnaces is alternatively conveyed in a closed mode through the Y-shaped diversion trench, the Y-shaped diversion trench is provided with a plugging valve at a position close to a bifurcation, and the copper matte between the two finishing furnaces and the two sets of casting discs is alternatively conveyed in a semi-closed mode through the X-shaped diversion trench, the plugging valve is arranged at a position close to a cross.

2. The production line of claim 1, wherein a partition wall is disposed in the space of the X-shaped guiding groove between the refining furnace and the casting disc, so as to create a space which is more permeable and more easily releases and dissipates heat generated during the open casting and water spraying cooling processes for the casting process, and prevent the invasion of hot waves and steam waves and the pollution of the space of the smelting and refining processes.

Technical Field

The invention relates to non-ferrous metal smelting, in particular to a closed-running two-dimensional continuous smelting anode copper production line.

Background

As the copper smelting technology which is the earliest initiation and appearance of human beings, the copper smelting technology is developed to the present day, and all-round innovation, transformation and competition are carried out around the copper smelting technology and process which are high in efficiency, low in consumption and low in pollution in various countries and domestic factories in the world. The main process of the current copper smelting technology comprises the following steps: melting bath smelting, a PS converter and an anode furnace; three independent units of flash smelting + flash converting + anode furnace, accomplish positive pole copper production step by step, the main problem that these smelting methods and technical process exist is: 1. the production site is large in paving, and occupies a large amount of land and factory area. 2. The requirements on factors such as the grade, the particle size, the water content and the like of the main raw material copper ore are strict, and the required production equipment, auxiliary equipment, detection equipment and detection technology are various. 3. The process is long, the links are multiple, the connection between the ring sections and the continuous process has high labor intensity, more manpower, severe working environment, serious environmental pollution, high treatment difficulty and high cost. 4. The direct yield of main and side products in the main production process system is low, and the loss and waste of material resources and human resources are caused. 5. Due to the reasons, the investment of the construction and operation process of the copper smelting facility is huge, the production technology and the auxiliary technologies such as environmental protection, safety and the like are more and more difficult, and the overall operation cost is high.

Disclosure of Invention

The invention aims to provide a closed-running secondary continuous smelting anode copper production line which is compact in facility assembly, short in flow, high in production process recovery rate, low in construction and running cost, energy-saving, environment-friendly and safe, and aims to solve the problems.

The purpose of the invention is realized by the following technical scheme:

a closed-running production line for continuously smelting anode copper in a secondary element manner comprises a multi-element smelting furnace, a fire refining furnace, a casting disc and a diversion trench. The method is characterized in that the intensity and the depth of the reaction process in the furnace are improved, the movement mode and the speed of copper matte are improved, and the multi-element smelting furnace produces the copper matte with 75-78% of copper content by dynamically regulating and controlling the spray gun arrangement mode, the position and the jet flow direction of the multi-element smelting furnace and the type and the ratio of gas supply. The method comprises the steps of finishing the reaction processes of oxidation replacement, oxidation reduction and deslagging of the copper matte by dynamically regulating and controlling the arrangement mode, the position and the jet flow direction of spray guns of the refining furnace and the type and the ratio of gas supply, and manufacturing a longitudinal segmental differential reaction temperature environment, wherein the refining furnace generates anode copper containing more than 99.2 percent of copper, the multi-element smelting furnace and the refining furnace are connected and communicated by a closed diversion trench to transport copper matte, and the refining furnace and a casting disc are cast by transporting and discharging the copper matte through the half-way closed diversion trench to form a continuous closed secondary smelting anode copper assembly line.

(1) The multi-element smelting furnace is a cylindrical horizontal converter, a plurality of charging ports are arranged at the middle section of the upper surface of the furnace wall and are deviated to a matte discharge port end, a main flue is arranged close to the inner side of a slag discharge end, an auxiliary flue is arranged close to the inner side of the matte discharge port end, two rows of bottom blowing spray guns which are arranged in a centripetal direction and staggered mode are arranged on one side of a longitudinal center line of the lower surface of the furnace wall, a plurality of horizontal spray guns which are arranged in an equidistant mode are arranged on the middle lower portion of the same side, a slag discharge port is arranged on the middle lower.

(2) The fine fire furnace is two cylindrical horizontal converters which are arranged in parallel and have completely the same morphological structure, volume and function, a flue is arranged on the upper surface of the furnace wall near a matte injection port, two rows of centripetal direction bottom blowing spray guns are arranged on one side of the longitudinal center line of the lower surface of the furnace wall, the bottom blowing spray guns are arranged in a staggered manner, a slag outlet is arranged at the middle lower part of the matte injection port at the same side, the matte injection port is arranged at the middle lower part of the end wall of the furnace wall at one side, and a matte placement port is arranged at the.

(3) The multi-element smelting furnace and the fire refining furnace are supported and fixed by fixed support frames arranged on the inner sides of two ends, and the angular rotation of the furnace body is completed by an annular gear rack attached to the edge of the fixed support frame at one end through the driving of a motor.

(4) The spray gun is a sleeve structure with an inner layer and an outer layer, a plurality of connectors are respectively led out from the inner layer and the outer layer and are respectively connected with oxygen, air, nitrogen and natural gas sources, and the type, the speed and the ratio of gas supply are timely and accurately controlled and adjusted by a control room.

(5) The casting disc is a circular disc which is provided with a plurality of casting grooves at the periphery of two sleeves, the rotating speed corresponds to the supply rate of the copper matte flow, and the processes of flow injection, temperature reduction, condensation and copper ingot lifting are alternately completed.

(6) The diversion trench is composed of a chute and a slot cover, wherein the chute is combined by customizing a U-shaped refractory brick, heat preservation filler and a steel plate shell, the slot cover is provided with a burner, a closed or semi-closed pipeline for continuously conveying copper matte is arranged, the copper matte between the multi-element smelting furnace and the two finishing furnaces is alternatively conveyed in a closed mode through the Y-shaped diversion trench, the Y-shaped diversion trench is provided with a plugging valve at a position close to a bifurcation, and the copper matte between the two finishing furnaces and the two sets of casting discs is alternatively conveyed in a semi-closed mode through the X-shaped diversion trench, the plugging valve is arranged at a position close to a cross.

The closed running production line for continuously smelting the anode copper in the quadratic element manner is characterized in that a partition wall is arranged in an X-shaped diversion trench space between a refining furnace and a casting disc, so that a space which is more permeable, easier to release and dissipate and can open heat generated in the casting and water spraying cooling processes is created for the casting process, and hot waves and steam waves are prevented from invading and polluting the smelting and refining process space.

Compared with the prior art, the closed-running secondary continuous anode copper smelting production line has the characteristics of less production equipment, compact arrangement and installation, short flow, less construction investment, low running cost, energy conservation, environmental protection and safety, and also has the following advantages:

1. the invention sets and reforms the positions and diameter values of the charging opening, the slag outlet, the matte discharging opening, the matte injecting opening, the flue and the like of the smelting furnace and the refining furnace according with the copper smelting operation rule through experimental practice on the basis of scientific demonstration, particularly dynamically regulates and controls the structure, the arrangement position and the sequence of an oxygen lance, the jet direction and the intensity and the type and the ratio of gas supply, improves the speed of smelting furnace for melting copper concentrate, deepens and expands the oxidation breadth and the depth of materials such as ores and the like, and ensures that the smelting furnace can produce the copper matte with the copper content of 75-78 percent. Through improving segmental temperature and whirl stirring washability in the refining furnace, extending and strengthening oxidation replacement, oxidation and reduction reaction in the refining furnace, make the refining furnace can produce the positive pole copper that copper content is greater than 99.2%, cut apart and bear the function and the effect of converting furnace in the smelting copper flow by smelting furnace and refining furnace, make the smelting copper flow make the quadratic element by the cubic element, shortened the smelting copper flow. In order to be different from the prior art, the smelting furnace with the extended and strengthened oxidation range is named as a multi-element smelting furnace, the refining furnace with segmental temperature difference is named as a fire refining furnace, and oxygen lances with wider regulation and control ranges of the gas infusion rate, the type and the ratio are collectively called as lances, so that the substantive characteristics of the two-step copper smelting are further disclosed and highlighted.

2. The design of small angle, centricity, staggered double rows and additionally arranged horizontal spray guns for the bottom blowing spray gun of the multi-element smelting furnace enables copper matte in the furnace to generate strong circulation in a wider range while generating radial vortex, further ensures the universality and balance of the oxidation process from the aspect of fluid dynamics, and provides the guarantee in the aspect of dynamics for the function extension of the multi-element smelting furnace. Only double rows of bottom blowing spray guns with larger angles are arranged for the fine fire furnace, so that the balance, stability and thoroughness of more complex oxidation replacement, oxidation and reduction reaction processes in the furnace are mainly ensured. Can produce higher-grade anode copper.

3. The set information module and program are used for providing various pure and mixed gases such as oxygen, air, nitrogen, natural gas and the like for the spray gun, and the comprehensive optimal basis and conditions such as raw materials, heat energy, kinetic energy and the like can be provided for various reactions in the furnace.

4. The diversion trench is arranged among the multi-element smelting furnace, the fire refining furnace and the casting disc, the continuous and closed transportation process under the automatic control of copper matte is completed, and the method has the following remarkable characteristics and advantages: first, the guiding gutter is liquid conveying pipeline, and is small, occupation space is few, compares copper clad transportation, need not prepare bulky weight, numerous copper clad of quantity, need not set up hoisting facilities such as rail, navigation car supporting with it, also need not set up place and facility of depositing the copper clad, not only very big reduction ground and the occupation of space, saved the investment of relevant equipment and facility and operating personnel and the maintenance personnel in the future also. And secondly, the possibility of close and dense arrangement of a multi-element smelting furnace, a fire refining furnace and a casting disc is provided. And thirdly, pipeline transportation provides conditions for continuous and uninterrupted matte discharging, matte injection and casting. Fourthly, the copper matte is transported in a closed mode through a pipeline, heat loss of an open copper clad is avoided, sublimation or evaporation of volatile substances is possible, energy is saved, the environment is protected, the working environment and conditions are improved, and the safety degree is higher.

5. The arrangement of the partition wall avoids the hot waves generated by heat energy released by open casting and condensation of copper matte and the invasion of steam waves formed by accelerated casting and condensation spray water into a smelting space, the deterioration of working environment and the damage to related facilities.

Drawings

FIG. 1 is a schematic plan view of a closed-running two-dimensional continuous anode copper smelting production line.

FIG. 2 is a schematic cross-sectional view of a multi-element smelting furnace of a closed-running two-dimensional continuous smelting anode copper production line.

FIG. 3 is a schematic cross-sectional view of a refining furnace of a closed-running two-dimensional continuous anode copper smelting production line.

FIG. 4 is a schematic cross-sectional view of a diversion trench of a closed-running two-dimensional continuous anode copper smelting production line.

In the figure: 1. the device comprises a multi-element smelting furnace, 2, a fire refining furnace, 3, a casting disc, 4, a diversion trench, 5, a fixed support frame, 6, a feed inlet, 7, a slag outlet, 8, a matte discharging port, 9, a matte injecting port, 10, a main smoke channel, 11, an auxiliary flue, 12, a flue, 13, a spray gun, 14, a chute, 15, a diversion trench cover, 16, refractory bricks, 17, fillers, 18, a plugging valve, 19, a burner, 20, a casting trench, 21 and a partition wall.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The invention is described in further detail below with reference to the drawings of the specification:

as shown in fig. 1: the anode copper production line comprises a multi-element smelting furnace 1, two refining furnaces 2 and two casting discs 3, wherein the multi-element smelting furnace 1, the two refining furnaces 2 and the two casting discs 3 are arranged in sequence, the two casting discs 3 are arranged in parallel, the two refining furnaces and the two casting discs are communicated and connected in series through a Y-shaped diversion trench 4 and an X-shaped diversion trench 4 to form a continuous closed running whole, and a separation wall 21 is arranged at the position of the X-shaped diversion trench 4 between the refining furnaces 2 and the casting discs 3.

As shown in fig. 1 and 2: the multi-element smelting furnace 1 is a cylindrical horizontal converter, is fixed by a fixed support frame 5 and realizes transverse angle rotation through a ring gear strip. The top is provided with an auxiliary flue 11, a plurality of charging openings 6 and a main flue 10 in sequence, the middle lower part of the front end wall is provided with a slag outlet 7, the bottom of the rear end is provided with a matte outlet 8, one side of the longitudinal line of the bottom surface is provided with two rows of centripetal bottom-blowing spray guns 13 which are arranged in a staggered way, and the middle lower part of the same side is provided with a plurality of horizontal spray guns 13. The spray gun 13 is a double-pipe structure with an inner layer and an outer layer.

As shown in fig. 1 and 3: the fine fire furnace 2 is a cylindrical horizontal converter with two parallel arrangements and completely identical morphological structures, volumes and functions, is fixed by a fixed support frame 5 and realizes transverse angular rotation through a ring gear strip, a flue 12 is arranged at the front end part of the top, a matte filling opening 9 is arranged at the middle lower part of a front end wall, a matte placing opening 8 is arranged at the bottom of the rear end, two rows of bottom blowing spray guns 13 which are arranged in a centripetal and staggered manner are arranged at one side of a longitudinal line at the bottom, and a slag outlet 7 is arranged at the middle lower part of the front end at the same side.

As shown in fig. 1 and 4, a Y-shaped diversion trench 15 is communicated with a matte discharging port 8 of a multi-element smelting furnace 1 and matte injecting ports 9 of two fine furnaces 2, copper matte is continuously injected into the fine furnaces 2 by gravity head in a self-flowing manner, and the two fine furnaces 2 are intermittently injected with matte by alternately closing and opening plugging valves 18 close to branching points. The temperature of the chute 14 is increased and the temperature lost after the copper matte leaves the furnace is compensated through the burner 19 arranged on the diversion groove cover 15, so that the smooth operation of the copper matte in the diversion groove 14 is ensured. The anode copper matte produced by the fire refining furnace 2 is alternately injected into the casting grooves 20 of the two casting discs 3 through the closing and opening of the X-shaped diversion trench 15 and the plugging valve 18 close to the intersection.

As shown in fig. 2, 3 and 4, the multi-element smelting furnace 1, the fine fire furnace 2 and the diversion trench 4 are fixedly formed by a steel plate shell, a heat-preservation smelting environment and a copper matte conveying pipeline are formed by lining refractory bricks 16, and the empty space of the copper matte conveying pipeline is filled with filling materials 17.

The technical features are known to those skilled in the art except for the technical features described in the specification.