WO2005056840A1 - Process for effectively removing slag from molten iron and apparatus therefor - Google Patents

Process for effectively removing slag from molten iron and apparatus therefor Download PDF

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Publication number
WO2005056840A1
WO2005056840A1 PCT/CN2004/000308 CN2004000308W WO2005056840A1 WO 2005056840 A1 WO2005056840 A1 WO 2005056840A1 CN 2004000308 W CN2004000308 W CN 2004000308W WO 2005056840 A1 WO2005056840 A1 WO 2005056840A1
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WIPO (PCT)
Prior art keywords
slag
molten iron
flat car
cantilever
special device
Prior art date
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Ceased
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PCT/CN2004/000308
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English (en)
French (fr)
Inventor
Fuchun Sheng
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Individual
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Individual
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Filing date
Publication date
Priority to BRPI0417127A priority Critical patent/BRPI0417127B1/pt
Priority to JP2006543344A priority patent/JP5382993B2/ja
Priority to EP04725667.2A priority patent/EP1702992B1/en
Priority to PL04725667T priority patent/PL1702992T3/pl
Priority to US10/582,864 priority patent/US8153050B2/en
Priority to AU2004297310A priority patent/AU2004297310B2/en
Application filed by Individual filed Critical Individual
Priority to EA200601112A priority patent/EA009428B1/ru
Priority to CA2549551A priority patent/CA2549551C/en
Priority to ES04725667.2T priority patent/ES2449717T3/es
Publication of WO2005056840A1 publication Critical patent/WO2005056840A1/zh
Anticipated expiration legal-status Critical
Priority to US13/411,217 priority patent/US8679223B2/en
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
    • B22D43/005—Removing slag from a molten metal surface
    • B22D43/007—Removing slag from a molten metal surface by using scrapers
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/14—Discharging devices, e.g. for slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4653—Tapholes; Opening or plugging thereof
    • 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
    • F27D3/1563—Equipment for removing or retaining slag for removing the slag from the surface of the melt by the use of scrapers

Definitions

  • the invention relates to the technical field of smelting, in particular to a method for efficiently removing scum on the surface of molten iron, and the invention also relates to a special device for slagging molten iron by using the above method. Background technique
  • the current hot metal pretreatment slag-scraping machine uses a slag-scraping machine that has been in use since the 1950s and 1960s.
  • This type of slag-scraping machine is a linear reciprocating hot-water slag-scraping device driven by mechanical transmission or hydraulic drive. It passes through a slag rake made of refractory material mounted on a cantilever, immerses it to a certain depth on the surface of the molten iron, performs linear or curved reciprocating motion along the surface of the molten iron, and successively extracts the solid slag floating on the molten iron surface in the molten iron ladle (tank). .
  • the purpose of the present invention is to overcome the shortcomings of the existing hot metal slag scraping method and equipment, and provide a new hot metal slag scraping method and its special device.
  • the rotary slag scraping technology is used to achieve high-speed and high-efficiency slag scraping and is effective. Reduce iron loss.
  • the method for efficiently removing slag from molten iron is: two slag rakes installed at the front end of a cantilever respectively perform rotary movement along the molten iron level; the two slag rakes gather or clamp solid slag as they gradually move closer; and then the two slag rakes are driven by the cantilever Retract down to the edge of the ladle (tank) and remove the slag.
  • the slag rake first descends side by side and submerged into the molten iron surface to a certain depth; after the slewing motion is completed, the cantilever drives the slag rake to rise to a certain height away from the molten iron surface; finally the two slag rakes are retracted to the edge of the ladle by the cantilever. (: Tank) Other than that, slag out.
  • a special device for realizing the above-mentioned molten iron efficient slag removing method includes a flat car track, a flat car reciprocating on the flat car track, and a cantilever connected to the flat car through a lifting spindle, and teeth are installed in a drive box at the front end of the cantilever.
  • the bar which meshes with the gears on both sides, and two rotary shafts hold the two gears and the rear ends of the two slag rakes together.
  • An oil cylinder is connected to the rear end of the rack, and the rack is driven forward and backward by the oil cylinder.
  • the movement of the flat car on the flat car track is driven by a motor or hydraulic pressure.
  • the side where the two slag rakes are clamped together is jagged.
  • FIG. 1 is a schematic structural diagram of a slag picking special device in the present invention.
  • Fig. 2 is a schematic structural diagram of a slag rake driving mechanism. Best Mode for Implementing the Invention The following description will describe a slag scraping process as a specific embodiment of an efficient slag scraping method in the present invention.
  • the lifting spindle (oil cylinder) works, immerse the slag harrow below the molten iron 20-50 mm through the cantilever;
  • the lifting spindle lifts the cantilever and drives the slag rake away from the molten iron level 30 100mm;
  • the two slag rakes rotate in opposite directions respectively, and the slag therein falls into the slag hopper near the molten iron ladle (tank).
  • a special slag-scraping device in the present invention which is only a specific example of implementing the above method. In fact, the method of the present invention can also derive slag-scraping equipment in various other structural forms.
  • the slag picking special device of the present invention includes a flat car track 8, a flat car 7 reciprocating on the flat car track 8, and a cantilever 4 connected to the flat car 7 through a lifting spindle (cylinder) 5 at the front end of the cantilever 4.
  • a rack 10 is installed, which meshes with the gears 11 on both sides, and the two rotating shafts 3 fix the two gears 11 and the rear ends of the two slag harrows 1 together.
  • the slag harrow 1 can be made of refractory material, or it can be made of other materials. Made of materials.
  • An oil cylinder 9 is connected to the rear end of the rack 10, and the rack 10 is driven forward and backward by the oil cylinder 9.
  • the slag harrow 1 is driven by the gear 11 and the rotary shaft 3 to perform a rotary motion.
  • the rack and pinion method is one of them.
  • Other driving methods can be gears, cams, worms, chains, belts, swing cylinders and other hydraulic or electric methods. form.
  • the movement of the flat car 7 on the flat car track 8 can be driven by a motor and a hoist chain mechanism, or it can be driven by the flat car's own power.
  • Two of the slag rakes 1 are zigzag-shaped on the side for clamping the slag, which is convenient for gathering or clamping the slag.
  • Hydraulic system (pump and tank) 6 can be fixed at the rear end of the cantilever.
  • the cantilever 4 can be designed as a hydraulic telescopic type according to user requirements.
  • the flat car 7 can be driven by electric motor for precise positioning and automatic control of the whole process.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Details (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Blast Furnaces (AREA)

Description

一种铁水高效扒渣方法及其专用装
技术领域
本发明涉及冶炼技术领域， 特别是一种高效清除铁水表面浮渣的方法， 本发明还涉及一种利用上述方法进行铁水扒渣的专门装置。 背景技术
铁水预处理脱硫、 脱硅、 脱磷后， 产生大量固体废渣， 并悬浮于铁水表 面。 这些固体渣必须及时清除， 否则会影响铁水的预处理效果， 并导致后道 工序生产成本的提高。
现行的铁水预处理扒渣， 采用的是自二十世纪五、 六十年代就开始使用 的扒渣机， 这类扒渣机是机械传动或液压驱动的直线往复式铁水扒渣设备。 它通过一安装于悬臂上的由耐火材料制成的渣耙，浸入至铁水表面一定深度， 沿铁水表面进行直线或曲线往复运动， 将铁水包 (罐)内铁水表面漂浮的固体 渣逐次扒出。
传统扒渣技术和设备的缺陷归纳起来有以下几点： （1) 扒渣耗时长， 工 作效率低。 一般需要往复十几次甚至几十次， 用时在 5— 10分钟。 （2) 扒渣 不彻底，除渣率低。在加粘渣剂或扒渣剂聚渣的情况下，扒渣率最高仅达 80%， 扒渣不彻底的直接后果就是造成转炉、 电炉回硫多的问题。 （3) 扒渣同时易 于带出铁水， 铁损一般在 0.5— 1.0%之间。 这些问题已经成为困扰和制约国 际钢铁业发展的世界性难题， 由此造成的直接经济损失每年都在 5亿美元以 上。
近几年， 我国钢铁工业发展迅猛， 总产量已经跃居世界第一， 预计 2003 年铁水预处理量将达到 5000万吨。由于技术和设备相对落后，实际扒渣铁损 率大多在 1.0%左右， 加上转炉与电炉回硫因素造成的经济损失， 全年直接经 济损失在 5亿元人民币以上。 发明的公开
本发明的目的是克服上述已有铁水扒渣方法和设备的不足， 而提供一种 新的铁水高效扒渣方法及其专用装置， 采用回转式扒渣技术实现高速、 高效 率扒渣， 并有效降低铁损。
本发明的铁水高效扒渣方法是： 安装在悬臂前端的两扇渣耙分别沿铁水 液面做回转式运动； 两渣耙在逐渐靠拢时聚拢或夹住固体渣； 然后两渣耙在 悬臂带动下回缩至铁水包 (罐)的边沿附近将渣扒出。
渣耙首先并列下降浸入铁水液面下一定深度； 完成回转运动后悬臂带动 渣耙上升至离开铁水液面一定高度； 最后两渣耙在悬臂带动下回缩至铁水包. (：罐)的边沿以外， 将渣扒出。
实现上述铁水高效扒渣方法的一种专用装置， 包括平车轨道， 在平车轨 道上往复运行的平车， 以及通过升降主轴与平车连接的悬臂， 在悬臂前端的 驱动箱内安装了齿条， 它与两侧的齿轮相啮合， 两回转轴将两齿轮和两渣耙 的后端固定在一起。
齿条的后端连接有油缸， 齿条由油缸驱动进退。 平车在平车轨道上的运 动由电机或液压驱动。 两个渣耙合拢夹渣的一侧为锯齿状。
与已有铁水扒渣技术和设备相比较， 本发明具有以下特点 (1) 除渣率明 显提高。 在渣量较少时， 渣耙一次回转运动即可除渣 90%以上； 当渣量较多 时， 二至三次即可将渣耙去 90%以上。 （2) 扒渣速度大大提高， 整个扒渣时 间在 3 内分钟以内。 （3) 在扒渣过程的最后阶段， 渣耙上升脱离铁水液面， 渣中的铁水绝大部分已经回流至铁水包 (罐)中， 因此扒渣带铁大大减少， 能 够严格地将铁损率控制在 0.1%以内。 附图的简要说明 图 1是本发明中扒渣专用装置的结构示意图。
图 2是渣耙驱动机构的结构示意图。 实现本发明的最佳方式 下面叙述一次扒渣过程，作为本发明中高效扒渣方法的一个具体实施例。
(1)、 当铁水包 (罐)进站到位后， 平车在电机或液压动力驱动下前行至合 适的扒渣工位；
(2)、升降主轴（油缸）工作， 通过悬臂将渣耙浸入铁水以下 20— 50mm;
(3)、 通过油缸的液压驱动， 使渣耙作回转运动扒渣；
(4)、 两渣耙运动至包 (罐)口后， 升降主轴 （油缸） 提升悬臂并带动渣耙 离开铁水液面 30 100mm;
(5)、 平车在电机或液压动力驱动下向后退， 至渣耙刚好全部离开铁水包
(罐)位置；
(6)、 两渣耙分别反向回转， 其中的渣即落入到铁水包 (罐)附近的渣料斗 中。 下面描述的是本发明中的扒渣专用装置， 这仅仅是实现上述方法的一种 具体实例，事实上本发明的方法还可以派生出其他多种结构形式的扒渣设备。 本发明的扒渣专用装置， 包括平车轨道 8， 在平车轨道 8上往复运行的 平车 7， 以及通过升降主轴 （油缸） 5与.平车 7连接的悬臂 4， 在悬臂 4的前 端安装了齿条 10， 它与两侧的齿轮 11相啮合， 两回转轴 3将两齿轮 11和两 渣耙 1的后端固定在一起。 其中渣耙 1可以由耐火材料制成， 也可以由其它 材料制成。
齿条 10的后端连接有油缸 9， 齿条 10由油缸 9驱动进退， 通过齿轮 11 和回转轴 3带动渣耙 1作回转运动。 事实上， 实现回转式渣耙的驱动形式有 多种， 齿轮齿条法是其中的一种， 其它的驱动方法可以是齿轮、 凸轮、 蜗轮 蜗杆、 链式、 皮带式、 摆动油缸等液压或电动形式。
平车 7在平车轨道 8上的运动可以由电机和卷扬机链条机构驱动， 也可 以由平车自身动力驱动。
其中的两个渣耙 1合拢夹渣的一侧为锯齿状， 便于聚拢或夹紧渣料。 液压系统 （油泵及油箱） 6可以固定在悬臂的后端。
另外， 悬臂 4可以根据用户要求， 设计为液压伸缩式。 平车 7可采用电 动驱动， 以便精确定位， 实现全过程自动化控制操作。

Claims

权利要求
1、一种铁水高效扒渣方法， 其特征是： 安装在悬臂前端的两扇渣耙分别 沿铁水液面做回转式运动； 两渣耙在逐渐靠拢时聚拢或夹住固体渣； 然后两 渣耙在悬臂带动下回缩至铁水包 (罐)的边沿附近将渣扒出。
2、如权利要求 1所述的铁水高效扒渣方法， 其特征是： 渣耙首先并列下 降浸入铁水液面下一定深度； 完成回转运动后悬臂带动渣耙上升至离开铁水 液面一定高度； 最后两渣耙在悬臂带动下回缩至铁水包 (罐)的边沿以外， 将 渣扒出。
3、实现权利要求 1或 2所述的铁水高效扒渣方法的一种专用装置，其特 征是： 它包括平车轨道 (8)， 在平车轨道 (8)上往复运行的平车 (7)， 以及通过 升降主轴 (5)与平车 (7)连接的悬臂 (4)， 在悬臂 (4)前端的驱动箱（2) 内安装了 齿条 (10)， 它与两侧的齿轮 (11)相啮合， 两回转轴 (3)将两齿轮 (11)和两渣耙 (1) 的后端固定在一起。
4、 如权利要求 3所述的铁水高效扒渣专用装置， 其特征是： 齿条 (10)的 后端连接有油缸 (9)， 齿条 ( 10)由油缸 (9)驱动进退。
5、 如权利要求 3所述的铁水高效扒渣专用装置， 其特征是： 平车 (7)在 平车轨道 (8)上的运动由电机驱动。
6、 如权利要求 3 所述的铁水高效扒渣专用装置， 其特征是： 平车 (7)在 平车轨道 (8)上的运动由液压驱动。
7、如权利要求 3所述的铁水高效扒渣专用装置，其特征是：两个渣耙 (1) 合拢夹渣的一侧为锯齿状。
PCT/CN2004/000308 2003-12-15 2004-04-05 Process for effectively removing slag from molten iron and apparatus therefor Ceased WO2005056840A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
EA200601112A EA009428B1 (ru) 2003-12-15 2004-04-05 Способ вычерпывания шлака с расплава и устройство для осуществления способа
JP2006543344A JP5382993B2 (ja) 2003-12-15 2004-04-05 銑鉄の滓を効率よく除去する方法及びその専用装置
EP04725667.2A EP1702992B1 (en) 2003-12-15 2004-04-05 Process for effectively removing slag from molten iron and apparatus therefor
PL04725667T PL1702992T3 (pl) 2003-12-15 2004-04-05 Sposób skutecznego usuwania żużlu z roztopionego żelaza i urządzenie do tego
US10/582,864 US8153050B2 (en) 2003-12-15 2004-04-05 Device for implementing a high efficiency method of scooping-up slag from liquid iron
BRPI0417127A BRPI0417127B1 (pt) 2003-12-15 2004-04-05 método de coleta e eliminação da escória presente no ferro fundido e dispositivo de coleta e eliminação da escória presente no ferro fundido
ES04725667.2T ES2449717T3 (es) 2003-12-15 2004-04-05 Procedimiento para la eliminación efectiva de escoria de hierro fundido y aparato asociado
AU2004297310A AU2004297310B2 (en) 2003-12-15 2004-04-05 Process for effectively removing slag from molten iron and apparatus therefor
CA2549551A CA2549551C (en) 2003-12-15 2004-04-05 A high efficient method of slagging-off for liquid iron and a device for implementing said method
US13/411,217 US8679223B2 (en) 2003-12-15 2012-03-02 Method for scooping-up slag from liquid iron

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2003101211016A CN1241704C (zh) 2003-12-15 2003-12-15 一种铁水高效捞渣方法及其专用装置
CN200310121101.6 2003-12-15

Related Child Applications (2)

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US10/582,864 A-371-Of-International US8153050B2 (en) 2003-12-15 2004-04-05 Device for implementing a high efficiency method of scooping-up slag from liquid iron
US13/411,217 Division US8679223B2 (en) 2003-12-15 2012-03-02 Method for scooping-up slag from liquid iron

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WO2005056840A1 true WO2005056840A1 (en) 2005-06-23

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PCT/CN2004/000308 Ceased WO2005056840A1 (en) 2003-12-15 2004-04-05 Process for effectively removing slag from molten iron and apparatus therefor

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US (2) US8153050B2 (zh)
EP (1) EP1702992B1 (zh)
JP (1) JP5382993B2 (zh)
KR (1) KR100870795B1 (zh)
CN (1) CN1241704C (zh)
AU (1) AU2004297310B2 (zh)
BR (1) BRPI0417127B1 (zh)
CA (1) CA2549551C (zh)
EA (1) EA009428B1 (zh)
ES (1) ES2449717T3 (zh)
PL (1) PL1702992T3 (zh)
WO (1) WO2005056840A1 (zh)

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CN116140604A (zh) * 2022-11-18 2023-05-23 四川德胜集团钒钛有限公司 智能扒渣系统及扒渣方法
CN117380948A (zh) * 2023-12-11 2024-01-12 兴化市鹏鼎锌品厂 一种用于锌锭生产的加工设备

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CN117380948A (zh) * 2023-12-11 2024-01-12 兴化市鹏鼎锌品厂 一种用于锌锭生产的加工设备
CN117380948B (zh) * 2023-12-11 2024-03-08 兴化市鹏鼎锌品厂 一种用于锌锭生产的加工设备

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CN1546259A (zh) 2004-11-17

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