EP2039788A1 - Rocédé de déphosphorisation dans un processus de fonte en gueuse ni-cr à partir d'un minerai d'oxyde de nickel - Google Patents

Rocédé de déphosphorisation dans un processus de fonte en gueuse ni-cr à partir d'un minerai d'oxyde de nickel Download PDF

Info

Publication number
EP2039788A1
EP2039788A1 EP06775350A EP06775350A EP2039788A1 EP 2039788 A1 EP2039788 A1 EP 2039788A1 EP 06775350 A EP06775350 A EP 06775350A EP 06775350 A EP06775350 A EP 06775350A EP 2039788 A1 EP2039788 A1 EP 2039788A1
Authority
EP
European Patent Office
Prior art keywords
smelting
pig iron
nickel oxide
ore
limestone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06775350A
Other languages
German (de)
English (en)
Other versions
EP2039788A4 (fr
Inventor
Guanghuo Liu
Shenjie Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP2039788A1 publication Critical patent/EP2039788A1/fr
Publication of EP2039788A4 publication Critical patent/EP2039788A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/16—Sintering; Agglomerating
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/006—Starting from ores containing non ferrous metallic oxides
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/008—Use of special additives or fluxing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • 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
    • C22B23/00—Obtaining nickel or cobalt
    • C22B23/005—Preliminary treatment of ores, e.g. by roasting or by the Krupp-Renn process
    • 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
    • C22B23/00—Obtaining nickel or cobalt
    • C22B23/02—Obtaining nickel or cobalt by dry processes
    • C22B23/023—Obtaining nickel or cobalt by dry processes with formation of ferro-nickel or ferro-cobalt
    • 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
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents

Definitions

  • This invention regards the field of metallurgy , and in particular the dephosphorization method in the process of smelting Ni-Cr pig iron from a nickel oxide ore,.
  • the requirement about content of phosphorus (P) in the blast furnace process is not high: pig iron for steelmaking containing 0.15 P and foundry pig iron containing 0.06 P are rated as high quality goods; while the P content requirement for stainless steel products is relatively higher: below 0.035 for 304 series stainless steel, below 0.05 for 200 series stainless steel.
  • the "Triple Dephosphorising" machine for dephosphorization is required for the large blast furnace, which is costly and can not keep the chromium (Cr) metal in the raw ore. The machine causes waste of raw material. Also it is not economic for medium and small blast furnace to invest a lot of money for dephosphorization. In prior art, there are also some other dephosphorization methods.
  • the Chinese patent CN85101003A disclosed a method of jet metallurgy which can reduce the P content to below 0.005 by spraying alkali metals or alkaline-earth metals or their alloy powder into steel ladle. But this method is not applicable for mass-production for its high cost.
  • Chinese patent CN03808054.0 disclosed an oxygen top-blowing pre-dephosphorising device for dephosphorization which needs special device and thus increases the cost for smelting.
  • CN200410021379 disclosed a reducing and dephosphorising agent for stainless steel used in vacuum induction furnace; this agent is mainly made up of Ca, Mg, which will be added into the liquid steel, adding a dephosphorising process.
  • the invention aims to overcome the shortcomings of prior art to provide a dephosphorization method in the process of smelting Ni-Cr pig iron from a nickel oxide ore.
  • the purpose of the invention is achieved through the following technical solution: a dephosphorization method in the process of smelting Ni-Cr pig iron from a nickel oxide ore, adjusting the binary basicity to 0.4-0.7 by adding limestone or silica to the raw ore, then adding limestones and coke powder for sintering to obtain sintered ore with a binary basicity of 0.5-0.8, and further smelting the sintered ore to obtain Ni-Cr pig iron.
  • the amount of the limestones to be added into the raw ore is 12% (percentage by weight, similarly hereinafter); when sintering, the amount of limestones to be added is 10-12% and that of coke powder is 9-17%.
  • CaO content in the limestones shall not be less that 80%.
  • the limestones can be replaced by quicklime.
  • the P content of the coke in raw material shall not be greater than 0.016%; P content of the limestone shall not be greater than 0.008%; P content of the raw ore not greater than 0.012%.
  • the sintering charge to be input into furnace contains: Fe: 6-46%; P: 0.019%; SiO 2: 18-41%; MgO: 16-21%; CaO: 16-24%; Ni: 1-3%; Cr: 1-3%.
  • the method offered in the invention is actually to adjust and prepare the variety and mixture ratio to be input into the fusing agent in the smelting process to get a proper binary basicity for direct dephosphorization and reduction of P in the smelting process, without adding any special equipment or preparing any special dephosphorising agent, which is applicable for smelting with many types of furnace such as blast furnace, electric furnace etc.
  • the P content could be reduced to less than 0.035% in one pass and in low cost without contamination by using the method.
  • composition of the raw ore is Composition of the raw ore:
  • the sinter reduces the basicity to between 0.5-0.8 by the equilibrating action among Si, Mg and F, and makes the phosphorus get into the liquid slag in large quantities.
  • the composition of the Chromel pig iron obtained are as follows: P below 0.035%, S below 0.08%, Fe 69%-92%, Ni 3-16%, Cr 2-7%, Mn 0.5%, Si 1.0-2.4%, C 1-4%.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP06775350A 2006-07-12 2006-08-11 Rocédé de déphosphorisation dans un processus de fonte en gueuse ni-cr à partir d'un minerai d'oxyde de nickel Withdrawn EP2039788A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2006100987413A CN101020943A (zh) 2006-07-12 2006-07-12 氧化镍矿冶炼镍铬生铁工艺的降磷方法
PCT/CN2006/002032 WO2008009178A1 (fr) 2006-07-12 2006-08-11 Rocédé de déphosphorisation dans un processus de fonte en gueuse ni-cr à partir d'un minerai d'oxyde de nickel

Publications (2)

Publication Number Publication Date
EP2039788A1 true EP2039788A1 (fr) 2009-03-25
EP2039788A4 EP2039788A4 (fr) 2011-02-23

Family

ID=38708821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06775350A Withdrawn EP2039788A4 (fr) 2006-07-12 2006-08-11 Rocédé de déphosphorisation dans un processus de fonte en gueuse ni-cr à partir d'un minerai d'oxyde de nickel

Country Status (3)

Country Link
EP (1) EP2039788A4 (fr)
CN (1) CN101020943A (fr)
WO (1) WO2008009178A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109251779A (zh) * 2018-09-30 2019-01-22 柳州钢铁股份有限公司 一种基于改性燃料铁矿烧结过程NOx减排方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100532579C (zh) * 2007-04-30 2009-08-26 郑州永通特钢有限公司 使用含镍、铬的低品位褐铁矿冶炼低磷不锈钢基料的方法
CN102312033A (zh) * 2011-07-28 2012-01-11 山西太钢不锈钢股份有限公司 一种高磷铬镍生铁脱磷的方法
CN104152676B (zh) * 2014-07-25 2016-04-06 中南大学 一种红土镍矿的烧结配矿方法
CN104561736A (zh) * 2014-12-29 2015-04-29 芜湖国鼎机械制造有限公司 高强度灰铸铁、铸件及其制备方法
CN104946832B (zh) * 2015-06-29 2017-07-28 中冶京诚工程技术有限公司 一种利用红土镍矿生产含镍铁水的方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2157412C1 (ru) * 1999-04-19 2000-10-10 ЗАО "Научно-производственное предприятие ФАН" Способ получения доменного ферроникеля

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5458611A (en) * 1977-10-19 1979-05-11 Kobe Steel Ltd Manufacture of sintered ore
JPS61159536A (ja) * 1984-12-29 1986-07-19 Kobe Steel Ltd 高ＴｉＯ↓２鉄鉱石ペレツト
CN85101003B (zh) 1985-04-01 1988-08-24 冶金工业部钢铁研究总院 低磷高铬不锈钢及超低磷高铬不锈钢的脱磷工艺
SU1696564A1 (ru) * 1989-12-19 1991-12-07 Днепропетровский Металлургический Институт Шихта дл производтсва ферроникел
CN1045111C (zh) * 1996-03-18 1999-09-15 安阳钢铁集团有限责任公司 生石灰铁精矿球团烧结矿制造方法
RU2132400C1 (ru) * 1998-09-03 1999-06-27 Открытое акционерное общество "Серовский металлургический завод" Способ переработки окисленных никелевых руд
DE10215828B4 (de) 2002-04-10 2007-08-02 Sms Demag Ag Verfahren und Einrichtung zum Erzeugen von nichtrostendem Stahl, insbesondere von chrom- oder chromnickelhaltigem Edelstahl
CN1670224A (zh) 2004-03-15 2005-09-21 中国科学院金属研究所 一种不锈钢还原脱磷剂
CN1300352C (zh) * 2005-09-16 2007-02-14 刘沈杰 含结晶水的氧化镍矿经高炉冶炼镍铁工艺

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2157412C1 (ru) * 1999-04-19 2000-10-10 ЗАО "Научно-производственное предприятие ФАН" Способ получения доменного ферроникеля

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008009178A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109251779A (zh) * 2018-09-30 2019-01-22 柳州钢铁股份有限公司 一种基于改性燃料铁矿烧结过程NOx减排方法

Also Published As

Publication number Publication date
EP2039788A4 (fr) 2011-02-23
CN101020943A (zh) 2007-08-22
WO2008009178A1 (fr) 2008-01-24

Similar Documents

Publication Publication Date Title
CN106636953B (zh) 一种锅炉管用马氏体不锈钢p91冶炼方法
CN100485071C (zh) 不锈钢除尘灰中铬、镍合金元素电炉冶炼回收方法
CN102952923B (zh) 一种电石脱氧冶炼含铝钢工艺
CN102828098A (zh) 一种炉外加锰矿提高钢水终点锰含量的方法
CN102787196B (zh) 一种采用直接还原铁冶炼不锈钢的方法
CN103882181B (zh) 一种含锰钢合金化的工艺
CN104164606B (zh) 一种冶炼铁铬铝合金加铝的方法
CN113416814B (zh) 一种lf炉精炼渣零排放的实现方法
CN101353753B (zh) 一种超低碳高纯度工业纯铁及其制造方法
CN102094094B (zh) 红土镍矿冶炼镍铁的工艺
EP2039788A1 (fr) Rocédé de déphosphorisation dans un processus de fonte en gueuse ni-cr à partir d'un minerai d'oxyde de nickel
CN110512044A (zh) 一种高纯生铁的冶炼工艺
CN107365949A (zh) 一种冶炼超低碳高合金不锈钢的方法
CN105506226A (zh) 一种在铁水罐内进行铁水预脱硅、预脱碳和预脱磷的方法
CN103643056B (zh) 低碳锰铁的冶炼方法
CN102061357B (zh) 含磷粗镍铁的脱磷精炼工艺
CN102994688B (zh) 一种转炉内终点钢渣预处理工艺
CN101413044B (zh) 一种用于提高钼收得率的合金加入方法
CN100577840C (zh) 炉内脱磷高炉铁水直接冶炼不锈钢的工艺
CN102071331B (zh) 一种高纯净髙硅锰硅合金的熔炼制备方法
CN101545019A (zh) 一种高硅超低硫低钛球铁用生铁的冶炼方法
CN110527774A (zh) 一种高硅铁水为50#钢增硅增碳的方法
CN105112598B (zh) 一种将转炉产炉底渣直接用于转炉炼钢的方法
CN111074037B (zh) 一种升级富锰渣冶炼产品结构的工艺方法
CN103614506B (zh) 一种使用小粒级高碱度烧结矿的转炉炼钢方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20090112

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

A4 Supplementary search report drawn up and despatched

Effective date: 20110121

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20110819