WO2012159567A1 - 一种用于紫杂铜火法精炼的组合炉系统 - Google Patents

一种用于紫杂铜火法精炼的组合炉系统 Download PDF

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WO2012159567A1
WO2012159567A1 PCT/CN2012/075939 CN2012075939W WO2012159567A1 WO 2012159567 A1 WO2012159567 A1 WO 2012159567A1 CN 2012075939 W CN2012075939 W CN 2012075939W WO 2012159567 A1 WO2012159567 A1 WO 2012159567A1
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copper
furnace
copper liquid
purple
slag
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PCT/CN2012/075939
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English (en)
French (fr)
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张秉檐
张选志
尹家军
饶勇平
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江西稀有稀土金属钨业集团有限公司
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Priority to KR2020137000073U priority Critical patent/KR20140001115U/ko
Priority to US14/118,909 priority patent/US9464845B2/en
Priority to EP12789514.2A priority patent/EP2716776A4/en
Publication of WO2012159567A1 publication Critical patent/WO2012159567A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1545—Equipment for removing or retaining slag
    • F27D3/1554—Equipment for removing or retaining slag for removing the slag from the surface of the melt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper
    • C22B15/0026—Pyrometallurgy
    • C22B15/0028—Smelting or converting
    • C22B15/005—Smelting or converting in a succession of furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B19/00—Combinations of furnaces of kinds not covered by a single preceding main group
    • F27B19/04—Combinations of furnaces of kinds not covered by a single preceding main group arranged for associated working

Definitions

  • the invention relates to a combined furnace system for purple copper fire refining, which comprises a set (set) shaft furnace, a set (set) tilting furnace, at least one set (set) rotary furnace, and a copper liquid flow tank. It belongs to the field of non-ferrous metal smelting technology.
  • Purple copper is waste copper containing not less than 90% copper.
  • the purple copper is refined and refined by fire to become refined copper.
  • the higher purity refined copper liquid is used for continuous casting and rolling of copper wire blanks for electricians (also known as copper rods and copper wire rods), or for casting other copper billets.
  • the refined copper liquid of low purity is used for casting the anode plate.
  • CN201713557U discloses a combined furnace system for a purple copper fire refining consisting of a shaft furnace, at least one rotary furnace, and a copper liquid flow tank, the basic flow of which is a purple copper feeder ⁇ shaft furnace ⁇ Purple copper liquid flow tank ⁇ rotary refining furnace ⁇ refined copper liquid flow tank ⁇ copper strand billet continuous casting and rolling production line or anode plate casting machine.
  • the main problem is that when the shaft furnace melts the purple copper with lower quality grade, more slag is generated, and the slag is easy to occur in the copper furnace, the slag discharge port and the purple copper liquid flow tank. Blocking, difficult to remove, thus reducing production efficiency.
  • the tilting furnace has never been used for slag removal between the shaft furnace and the purple copper liquid flow tank, and there has never been a precedent for the combination of the shaft furnace, the tilting furnace and the rotary furnace.
  • the object of the present invention is to provide a combined furnace system for purple copper fire refining, which does not discharge copper and slag discharge holes in the shaft furnace even when the shaft furnace melts the purple copper of lower quality grade. It is difficult to remove the blockage in the flow tank of the purple copper liquid, which can greatly reduce the time of shutdown and slag removal work, thereby ensuring production efficiency and economic benefits.
  • the present invention provides a combined furnace system for purple copper fire refining, which in turn comprises: a shaft furnace for melting a purple copper raw material into a purple copper liquid; a purple copper liquid flow tank; At least one rotary furnace for redox refining to produce a refined copper liquid; and a refined copper liquid flow tank characterized in that between the shaft furnace and the purple copper liquid flow tank, A tilting furnace for performing a slag removing operation on a slag-containing purple copper liquid.
  • two or two sets of rotary furnaces are included.
  • three or three sets of rotary furnaces are included.
  • the purple copper liquid flow tank or the refined copper liquid flow tank is a movable type, a fixed type, or a combination of movable type and fixed type;
  • each of the purple copper liquid flow tank or the refined copper liquid flow tank flow tank is one or more sections.
  • the copper strand continuous casting and rolling production line or the anode plate casting complete equipment is connected downstream of the refined copper liquid flow tank, and the copper strand continuous casting and rolling production line or the anode plate casting machine comprises the front holding furnace, the middle Package, quantitative casting package, copper flow tank and other supporting devices.
  • a combined furnace system for pyrometallurgical refining characterized in that the system comprises: pretreatment of a copper-copper material, removing inclusions as much as possible, processing length or The block degree should be suitable for loading into the material truck; the fork copper material is loaded into the feeding machine with a forklift; the material feeding machine adds the purple copper furnace charge to the 40t/h shaft furnace; the shaft furnace melts the charge and continuously produces Purple copper liquid and a small amount of slag; slag-containing purple copper liquid flows into the 50t tilting furnace for slag removal operation; purple copper liquid is transported through the trough, and two 200t rotary kiln are introduced respectively; two nominal capacity 200t
  • the converter independently completes the process of taking copper liquid, oxidizing, slagging, reducing, controlling temperature and composition, and copper discharging, but at the same time interlacing 1/2 operation process, when one is about to finish copper liquid, the other one The copper is started and smoothly alternated
  • the basic flow of the invention is: purple copper feeding machine ⁇ shaft furnace ⁇ tilting furnace ⁇ zihong copper liquid flow tank ⁇ rotary refining furnace ⁇ refined copper liquid flow tank ⁇ copper strand billet continuous casting and rolling production line or anode plate casting machine . Therefore, the present invention is directed to an improvement of the existing fire refining system by adding a set of tilting furnaces for facilitating slag removal between the shaft furnace and the purple copper liquid flow tank of the fire refining system.
  • the invention has the beneficial effects of providing a combined furnace system which is convenient for removing slag, ensuring smooth flow of the purple copper liquid flow tank, and stable production efficiency of melting and refining.
  • the tilting furnace since the tilting furnace has the function of accommodating a large amount of slag copper liquid, facilitating the outflow and removing the slag, the slag siltation of the shaft furnace copper discharge port is prevented from being blocked, and the shaft furnace to the purple copper liquid flow tank is omitted. Short flow tank or slag tank structure with slag discharge port.
  • the purple copper liquid treated by the tilting furnace slag and the slag residue has very little slag, which avoids the siltation of the slag of the purple copper slag.
  • the shaft furnace is not only suitable for melting copper or high-grade purple copper with a small amount of molten slag, but also for low-grade purple copper with a large amount of molten slag, which greatly expands the raw materials for the shaft furnace.
  • the scope has a wide range of practical significance.
  • Figure 1 is a schematic illustration of a purple copper fire refining system in accordance with the present invention.
  • reference numeral 1 denotes a feeder
  • reference numeral 2 denotes a shaft furnace
  • reference numeral 3 denotes a tilting furnace
  • reference numeral 4 denotes a purple copper liquid flow tank
  • reference numeral 5 denotes two rotary furnaces.
  • Reference numeral 6 denotes a refining copper liquid flow tank
  • reference numeral 7 denotes a copper wire blank continuous casting and rolling production line or an anode plate casting machine.
  • the raw material of the purple copper is loaded into the feeding machine or other form of the feeding machine 1, and then added to the shaft furnace 2; the shaft furnace melts the charge to produce the purple copper liquid and the slag; The liquid is subjected to the slag removing operation in the tilting furnace 3; the purple copper mixed liquid is transported through the launder 4, and enters two rotary kiln 5, and the two rotary kiln 5 independently complete the whole process of the refining operation; the refined copper liquid produced by the rotary kiln 5 It is conveyed through the launder 6 and enters the tundish (casting package) of the copper wire continuous casting and rolling production line or the anode plate casting machine 7 for continuous casting and rolling of copper wire blank or casting anode plate.
  • tundish casting package
  • Feeder-type feeder adds the purple copper charge to the 40 t/h shaft furnace.
  • the slag-containing purple copper liquid flows into the 50t tilting furnace to perform the slag removal operation.
  • the t-rotary furnaces independently complete the whole process of picking up copper liquid, oxidizing, slagging, reducing, controlling temperature and composition, and copper discharging, but at the same time interlacing 1/2 operations.
  • the other one starts to produce copper, which alternates smoothly, and the flow rate of the refined copper liquid flow tank is basically stable.
  • the refined copper liquid produced by the rotary kiln enters the production capacity through the flow tank 40
  • the tundish of the t/h continuous casting and rolling production line is continuously cast and rolled to produce copper billets.
  • the production efficiency is not lowered when the shaft furnace melts the purple copper of a lower quality grade.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

一种用于紫杂铜火法精炼的组合炉系统，其依次包括：把紫杂铜原料熔炼成紫杂铜液的一竖炉（2）；一紫杂铜液流槽（4）；对紫杂铜液进行氧化还原精炼产出精炼铜液的至少一回转炉（5）；以及一精炼铜液流槽（6），其特征在于，在所述竖炉（2）与紫杂铜液流槽（4）之间，还包括用于对含渣紫杂铜液进行除渣操作的一倾动炉（3）。由此提供了一种除渣方便、保证紫杂铜液流槽（4）畅通、熔化精炼生产效率稳定的组合炉系统。

Description

一种用于紫杂铜火法精炼的组合炉系统 技术领域
本发明涉及一种用于紫杂铜火法精炼的组合炉系统，由1台(套)竖炉、1台(套)倾动炉、至少1台(套)回转炉、以及铜液流槽组成，属于有色金属冶炼技术领域。
背景技术
紫杂铜是含铜量不低于90%的废铜。紫杂铜经过火法精炼提纯成为精炼铜。纯度较高的精炼铜液用于连铸连轧电工用铜线坯(又称铜杆、铜盘条)，或用于浇铸其它紫铜坯。纯度不高的精炼铜液用于浇铸阳极板。
CN201713557U公开了一种由1台竖炉、至少1台回转炉、以及铜液流槽组成的用于紫杂铜火法精炼的组合炉系统，其基本流程为，紫杂铜加料机→竖炉→紫杂铜液流槽→回转式精炼炉→精炼铜液流槽→铜线坯连铸连轧生产线或阳极板浇铸机。其存在的主要问题是：在竖炉熔化质量等级较低的紫杂铜时，会生成较多炉渣，而该炉渣在竖炉放铜口、排渣口和紫杂铜液流槽中易发生阻塞，难以清除，因而降低了生产效率。
在现有技术中，在所述竖炉与紫杂铜液流槽之间，仅可见带排渣口的短流槽或渣箱结构。该结构导致竖炉只适用于熔化炉渣生成量很少的阴极铜或是高等级紫杂铜而不适用于熔化炉渣生成量较多的低等级紫杂铜。
在现有技术中，从来没有把倾动炉用于在所述竖炉与紫杂铜液流槽之间进行除渣，也从来没有竖炉、倾动炉、回转炉三炉联用的先例。
发明内容
本发明的目的是提供一种用于紫杂铜火法精炼的组合炉系统，其即使在竖炉熔化质量等级较低的紫杂铜时，也不会在竖炉放铜口、排渣口和紫杂铜液流槽中发生难以清除的阻塞，可大幅度减少停机除渣作业的时间，从而确保生产效率和经济效益。
为此，本发明提供了一种用于紫杂铜火法精炼的组合炉系统，其依次包括：把紫杂铜原料熔炼成紫杂铜液的一竖炉；一紫杂铜液流槽；对紫杂铜液进行氧化还原精炼产出精炼铜液的至少一回转炉；以及一精炼铜液流槽，其特征在于，在所述竖炉与紫杂铜液流槽之间，还包括用于对含渣紫杂铜液进行除渣操作的一倾动炉。
优选地，包括两台或两套回转炉。
优选地，包括三台或三套回转炉。
优选地，紫杂铜液流槽或精炼铜液流槽是活动式、固定式、或活动式和固定式的组合；
优选地，每个紫杂铜液流槽或精炼铜液流槽流槽是一段或多段。
优选地，精炼铜液流槽的下游连接有铜线坯连铸连轧生产线或阳极板浇铸成套设备，而铜线坯连铸连轧生产线或阳极板浇铸机包括其前置的保温炉、中间包、定量浇铸包、铜液流槽等配套装置。
根据本发明的一个特定实施例，提供了一种用于紫杂铜火法精炼的组合炉系统，其特征在于，该系统包括：预处理紫杂铜原料，尽可能去除夹杂物，加工长度或块度应适合装入料车；用叉车把紫杂铜原料装入料车式加料机；料车式加料机把紫杂铜炉料加入产能40t/h竖炉；竖炉熔化炉料，连续产出紫杂铜液和少量炉渣；含渣紫杂铜液流入容量50t倾动炉，进行除渣操作；紫杂铜液经流槽输送，分别先后引入两台容量200t回转炉；两台公称容量200t回转炉各自独立完成接取铜液、氧化、排渣、还原、控制温度和成分、出铜作业全过程，但同时相互交错1/2作业过程，当一台即将出完铜液时，另一台开始出铜，平稳交替，保持精炼铜液流槽的流量基本稳定；回转炉产出的精炼铜液通过流槽进入产能40t/h连铸连轧生产线的中间包，经连续铸坯、轧制，产出铜线坯。
本发明的基本流程为，紫杂铜加料机→竖炉→倾动炉→紫杂铜液流槽→回转式精炼炉→精炼铜液流槽→铜线坯连铸连轧生产线或阳极板浇铸机。因此，本发明是针对现有火法精炼系统的改进点是，在该火法精炼系统的竖炉与紫杂铜液流槽之间增加一套方便除渣的倾动炉。
本发明的有益效果是，提供了一种除渣方便、保证紫杂铜液流槽畅通、熔化精炼生产效率稳定的组合炉系统。
根据本发明，由于倾动炉具有容纳大渣量铜液、方便流出及扒除炉渣的功能，避免了竖炉放铜口的被炉渣淤积阻塞，省略了竖炉至紫杂铜液流槽之间带排渣口的短流槽或渣箱结构。经过倾动炉流渣及扒渣处理的紫杂铜液含渣极少，避免了紫杂铜液流槽的被炉渣淤积阻塞。从而使竖炉不仅适用于熔化炉渣生成量很少的阴极铜或是高等级紫杂铜，同时也适用于熔化炉渣生成量较多的低等级紫杂铜，大幅度拓宽了竖炉适用的原料范围，具有广泛的实用意义。
附图说明
图1是根据本发明的紫杂铜火法精炼系统的示意图。
具体实施方式
在图1中，附图标记1表示加料机；附图标记2表示竖炉；附图标记3表示倾动炉；附图标记4表示紫杂铜液流槽；附图标记5表示两台回转炉；附图标记6表示精炼铜液流槽；附图标记7表示铜线坯连铸连轧生产线或阳极板浇铸机。
如图1所示，把紫杂铜原料装入料车式或其它形式的加料机1，随之加入竖炉2；竖炉熔化炉料，产出紫杂铜液和炉渣；含渣紫杂铜液在倾动炉3进行除渣操作；紫杂铜液经流槽4输送，进入两台回转炉5，两台回转炉5各自独立完成精炼作业的全过程；回转炉5产出的精炼铜液经流槽6输送，进入铜线连铸连轧生产线或阳极板浇铸机7的中间包(浇铸包)，用于连铸连轧铜线坯或浇铸阳极板。
以年产铜线坯24万吨工程为例，工艺流程如下：
① 预处理紫杂铜原料，尽可能去除夹杂物，加工长度或块度应适合装入料车。
② 用叉车把紫杂铜原料装入料车式加料机。
③ 料车式加料机把紫杂铜炉料加入产能40 t/h竖炉。
④ 竖炉熔化炉料，连续产出紫杂铜液和炉渣。
⑤ 含渣紫杂铜液流入容量50t倾动炉，进行除渣操作。
⑥ 紫杂铜液经流槽输送，分别先后引入两台容量200 t回转炉。
⑦ 两台公称容量200 t回转炉各自独立完成接取铜液、氧化、排渣、还原、控制温度和成分、出铜作业全过程，但同时相互交错1/2作业过程。当一台即将出完铜液时，另一台开始出铜，平稳交替，保持精炼铜液流槽的流量基本稳定。
⑧ 回转炉产出的精炼铜液通过流槽进入产能40 t/h连铸连轧生产线的中间包，经连续铸坯、轧制，产出铜线坯。
另外，在所述竖炉与紫杂铜液流槽之间，设置用于对含渣紫杂铜液进行除渣操作的一倾动炉，也的确需要克服一些技术细节上的困难，但由于与本发明没有单一性，申请人不得不另外提交专利申请。
根据本发明的一个实施例，在竖炉熔化质量等级较低的紫杂铜时，生产效率也不会下降。
根据本发明的一个实施例，清除炉渣所占用的时间降低30-50%。根据本发明的另外一个实施例，清除炉渣所占用的时间降低50-70%。根据本发明的另外一个实施例，清除炉渣所占用的时间降低70-80%。
在本发明的思想指引下，本领域的技术人员可能会对本发明进行进一步的完善，然而，这都已经涵盖在本发明的保护范围内。

Claims (6)

  1. 一种用于紫杂铜火法精炼的组合炉系统，其特征在于，该系统包括：
    1台(套)把紫杂铜原料熔炼成紫杂铜液的竖炉；
    1台(套)主要用于对含渣紫杂铜液进行除渣操作的倾动炉，省略了竖炉至紫杂铜液流槽之间带排渣口的短流槽或渣箱结构；
    紫杂铜液流槽；
    至少1台(套)对紫杂铜液进行氧化还原精炼产出精炼铜液的回转炉；以及
    精炼铜液流槽。
  2. 如权利要求1所述的组合炉系统，其特征在于，包括两台(套)回转式精炼炉。
  3. 如权利要求2所述的组合炉系统，其特征在于，包括三台(套)回转式精炼炉。
  4. 如权利要求1所述的组合炉系统，其特征在于，流槽形式可以是活动式和固定式两种类型的组合，也可以是其中一种；流槽可以是多段，也可以是一段。
  5. 如权利要求1所述的组合炉系统，其特征在于，精炼铜液流槽的下游连接有铜线坯连铸连轧生产线或阳极板浇铸成套设备。铜线坯连铸连轧生产线或阳极板浇铸机包括其前置的保温炉、中间包、定量浇铸包、铜液流槽等配套装置。
  6. 一种用于紫杂铜火法精炼的组合炉系统，其特征在于，该系统包括：
    预处理紫杂铜原料，尽可能去除夹杂物，加工长度或块度应适合装入料车；
    用叉车把紫杂铜原料装入料车式加料机；
    料车式加料机把紫杂铜炉料加入产能40t/h竖炉；
    竖炉熔化炉料，连续产出紫杂铜液和炉渣；
    含渣紫杂铜液流入容量50t倾动炉，进行除渣操作；
    紫杂铜液经流槽输送，分别先后引入两台容量200t回转炉；
    两台公称容量200t回转炉各自独立完成接取铜液、氧化、排渣、还原、控制温度和成分、出铜作业全过程，但同时相互交错1/2作业过程，当一台即将出完铜液时，另一台开始出铜，平稳交替，保持精炼铜液流槽的流量基本稳定；
    回转炉产出的精炼铜液通过流槽进入产能40t/h连铸连轧生产线的中间包，经连续铸坯、轧制，产出铜线坯。
PCT/CN2012/075939 2011-05-24 2012-05-23 一种用于紫杂铜火法精炼的组合炉系统 WO2012159567A1 (zh)

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