CN1306049C - Ferronickel smelting process of nickel oxide ore free of crystal water in blast furnace - Google Patents
Ferronickel smelting process of nickel oxide ore free of crystal water in blast furnace Download PDFInfo
- Publication number
- CN1306049C CN1306049C CNB2005101029845A CN200510102984A CN1306049C CN 1306049 C CN1306049 C CN 1306049C CN B2005101029845 A CNB2005101029845 A CN B2005101029845A CN 200510102984 A CN200510102984 A CN 200510102984A CN 1306049 C CN1306049 C CN 1306049C
- Authority
- CN
- China
- Prior art keywords
- blast
- ore
- furnace smelting
- nickel oxide
- ferronickel
- 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.)
- Expired - Fee Related
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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/02—General features in the manufacture of pig-iron by applying additives, e.g. fluxing agents
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/008—Composition or distribution of the charge
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
-
- 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention provides a technology for smelting ferronickel of nickel oxide ore without water of crystallization via a blast furnace, which mainly comprises the following steps: crude ore is crushed and sieved; ore powder is made into sintering ore; sintering ore blocks, coke, limestone/calcium oxide, dolomite and fluorite are mixed and matched to carry out blast furnace smelting to obtain the ferronickel, wherein the weight proportions of an additive and the sintering ore are as follows: 0.3 to 8% of the fluorite, 0 to 8% of the dolomite, and 4 to 35% of the limestone/calcium oxide. Compared with the prior art, the proportion between the fluorite and the sintering ore in the ferronickel smelting technology provided by the present invention can reduce the influence of chromium on the furnace temperature and simultaneously also prevent accidents, such as furnace hearth burn-through, etc., caused by a too high fluorine content from occurring; the magnesium contained in the dolomite can solve the problems of poor melted iron fluidity caused by the chrome in nickel chromium ore; the limestone can provide alkalinity and can equalize the two additives. The blast furnace smelting method provided by the present invention has the advantages of low cost and high raw material recovery rate.
Description
Technical field:
The present invention relates to blast furnace smelting process, the nickel oxide ore that does not particularly contain crystal water is through blast-furnace smelting ferronickel technology.
Background technology:
Along with the widespread use of global stainless steel and special steel, causing the main element of smelting stainless steel and special steel---the short supply of nickel metal causes that price skyrockets.Traditional nickel Metal Production is mainly extracted its mature production technology from the nickel sulfide ore that takes up an area of ball nickel resources 30%.But exploit continuously through last 100 years, present reserves deficiency, resource presents crisis.Force people to give more multiple looking to extracting the nickel metal in the red soil nickel ore (nickel oxide ore) that takes up an area of ball nickel resources 70%.For a long time red soil nickel ore do not obtain the major cause of large-scale development be from these type of mineral reserve, extract technology cost height, the complex process of nickel, yield poorly, seriously polluted.In the world to high-grade red soil nickel ore (nickel content is more than 2.0%), generally adopt mine heat furnace smelting at present, but there are drawbacks such as power consumption height, environmental pollution is big, interval type production yields poorly in this technology.Adopt hydrometallurgy for low-grade red soil nickel ore more, it is the method that sulfuric acid soaks, nickel oxide solid-state in the red soil nickel ore, chromic oxide, ferric oxide etc. are converted into mixing solutionss such as liquid single nickel salt, chromium sulphate, ferrous sulfate, again single nickel salt is therefrom separated, form the metallic nickel that only accounts for total amount 1～2% through electrolysis, all the other compositions all go out of use.This processing unit one-time investment is big, complex process, the cycle is long, environmental pollution is serious.Adopt the comparatively economic beyond doubt selection of blast-furnace smelting, but because the normal association of red soil nickel ore there is Cr
2O
3Composition, and the fusing point of chromium is very high, makes that the molten iron viscosity after melting is big, the Ni and Cr contained molten iron can not flow out smoothly, causes the serious consequence of freezing stove, ruining stove.Many enterprises have carried out for a long time with the technical study that research institution smelts into ferronickel (ferronickel) for red soil nickel ore through the blast furnace single stage method both at home and abroad, but do not have the report of success so far.Therefore, it is low to seek a kind of efficient low-consume, output height, cost, and pollution-free or oligosaprobic Technology of directly smelting into ferronickel from red soil nickel ore becomes the problem that needs to be resolved hurrily in the industry.
Summary of the invention:
The present invention is intended to address the above problem, and provides a kind of nickel oxide ore of crystal water that do not contain through blast furnace single stage method ferronickel smelting proces.
Above-mentioned purpose of the present invention is to realize by following technical scheme.
The invention provides a kind of crystal water nickel oxide ore that do not contain through blast-furnace smelting ferronickel technology, mainly comprise the steps:
With the crushing raw ore screening, wherein the former nugget of particle diameter 10～60mm is the blast-furnace smelting raw material, and particle diameter carries out sintering less than breeze and coke powder, the unslaked lime/Wingdale mix of 10mm, obtains the sintering nugget;
With sintering nugget crushing and screening, the sintering nugget of particle diameter 10～50mm is the blast-furnace smelting raw material, and particle diameter is less than the breeze of 10mm sintering again;
Sintering nugget, former nugget, coke, Wingdale/unslaked lime, rhombspar and fluorite be mixed carry out blast-furnace smelting and obtain ferronickel, wherein, following additive and agglomerate weight ratio are:
Fluorite 0.3～8%
Rhombspar 0～8%
Wingdale/unslaked lime 4～35%.
Wherein smelt and not add former nugget in the step as raw materials for metallurgy.
The main component of wherein said nickel oxide ore and weight ratio thereof are:
Nickel: 0.5～4.5%;
Chromium: 0.3～12%;
Iron: 38～55%.
The weight ratio of wherein said additive and agglomerate is preferably:
Fluorite 0.3～5%
Rhombspar 0.5～5%
Wingdale/unslaked lime 8～15%.
CaO content is greater than 50% in the wherein said Wingdale, in the unslaked lime CaO content greater than 80%, Mg content＞10% in the described rhombspar, CaF in the described fluorite
2Content＞80%.
Compare with prior art, in the tradition blast furnace smelting process, furnace temperature can reach about 1700 ℃, contained chromium is many in the nickel oxide ore exists with the chromium sesquioxide form, the fusing point of chromium sesquioxide is about 2300 ℃, so the reducing degree of chromium is limited in the nickel oxide ore, it is mobile poor to cause smelting the gained molten iron, easily freeze the stove phenomenon, even have an accident.Add fluorite in the nickel chromium iron mining and metallurgy nickel metallurgy iron process provided by the present invention and can effectively reduce the influence of chromium furnace temperature, improved the flowability of molten iron, simultaneously, because the amount that adds fluorite in the smelting technology provided by the present invention is calculated through strict, can effectively avoid because the too high accident such as hearth breakout that causes of fluorite add-on takes place.Simultaneously, the contained magnesium of rhombspar also can help to solve the mobile poor problem of molten iron that chromium causes in the nickel chromium triangle ore deposit in the technology provided by the present invention.Wingdale not only can provide the basicity can also balanced above-mentioned two kinds of additives.Blast furnace single stage method smelting technology provided by the present invention has that technical process is short, continuous production output big, the nickel chromium iron element is disposable in the red soil nickel ore all is extracted the resource utilization height.It smelts the slag that produces is the good raw material of producing cement, removes a certain amount of CO of discharging
2Gas does not have other solid or liquid debris to produce, and is pollution-free.
Through contrast, blast furnace smelting process cost provided by the present invention is low, and the hot furnaceman in traditional ore deposit plants and need expend 2000～4000 degree electricity/ton iron, 0.5 ton in coke, blast furnace power consumption 150～200 degree electricity/ton iron in the technology provided by the present invention.Save energy, output is big, and the blast furnace mean yield is greater than the hot stove mean yield in ore deposit.Pollute and lack, dust is few.Raw material rate of recovery height, yield is respectively: iron 97～98%, nickel 99%, chromium 40～50%.
Embodiment:
Engage specific embodiment below the present invention is further explained, the following example does not limit protection scope of the present invention, and all modification and adjustment of making based on thought of the present invention all belong to the scope of protection of the invention.
With the crushing raw ore screening, wherein the former nugget of particle diameter 10～60mm is the blast-furnace smelting raw material, and particle diameter carries out sintering less than breeze and coke powder, the unslaked lime/Wingdale mix of 10mm, obtains the sintering nugget;
With sintering nugget crushing and screening, the sintering nugget of particle diameter 10～50mm is the blast-furnace smelting raw material, and particle diameter is less than the breeze of 10mm sintering again;
Sintering nugget, former nugget, coke, Wingdale/unslaked lime, rhombspar and fluorite be mixed carry out blast-furnace smelting and obtain ferronickel.
With agglomerate and other raw material mixed smelting, wherein agglomerate can mix by arbitrary proportion with raw ore, also can use agglomerate or raw ore fully, as whole use raw ores, ore and coke ratio are 1.9～2.1: 1, and as whole use agglomerate, ore deposit and coke ratio are 2.2～2.4: 1.
With nickel chromium triangle iron ore major ingredient and content (weight %) be
The main component of gained agglomerate and content (weight %) are:
Blast furnace burden is formed (weight Kg) as following table
The blast furnace smelting process parameter
Smelting gained ferronickel main component and content (weight %) is:
Claims (7)
1. a nickel oxide ore that does not contain crystal water is through blast-furnace smelting ferronickel technology, and it is characterized in that: described blast furnace smelting process mainly comprises the steps:
With the crushing raw ore screening, wherein the former nugget of particle diameter 10～60mm is the blast-furnace smelting raw material, and particle diameter carries out sintering less than breeze and coke powder, the unslaked lime/Wingdale mix of 10mm, obtains the sintering nugget;
With sintering nugget crushing and screening, the sintering nugget of particle diameter 10～50mm is the blast-furnace smelting raw material, and particle diameter is less than the breeze of 10mm sintering again;
Sintering nugget, coke, Wingdale/unslaked lime, rhombspar and fluorite be mixed carry out blast-furnace smelting and obtain ferronickel, wherein, following additive and agglomerate weight ratio are:
Fluorite 0.3～8%
Rhombspar 0～8%
Wingdale/unslaked lime 4～35%.
2. the crystal water nickel oxide ore that do not contain as claimed in claim 1 is through blast-furnace smelting ferronickel technology, and the main component of wherein said nickel oxide ore and weight ratio thereof are: nickel: 0.5～4.5%; Chromium: 0.3～12%; Iron: 38～55%.
3. the crystal water nickel oxide ore that do not contain as claimed in claim 1 is through blast-furnace smelting ferronickel technology, and wherein raw material is mixed and carries out blast-furnace smelting and obtain also being added with former nugget in the step of ferronickel.
As claim 1 or the 3 described crystal water nickel oxide ores that do not contain through blast-furnace smelting ferronickel technology, the weight ratio of wherein said additive and agglomerate is preferably:
Fluorite 0.3～5%
Rhombspar 0.5～5%
Wingdale/unslaked lime 8～15%.
As claim 1 or the 3 described crystal water nickel oxide ores that do not contain through blast-furnace smelting ferronickel technology, CaO content is greater than 50% in the wherein said Wingdale, CaO content is greater than 80% in the unslaked lime.
As claim 1 or the 3 described crystal water nickel oxide ores that do not contain through blast-furnace smelting ferronickel technology, Mg content＞10% in the wherein said rhombspar.
As claim 1 or the 3 described crystal water nickel oxide ores that do not contain through blast-furnace smelting ferronickel technology, CaF in the wherein said fluorite
2Content＞80%.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101029845A CN1306049C (en) | 2005-09-16 | 2005-09-16 | Ferronickel smelting process of nickel oxide ore free of crystal water in blast furnace |
| EP05803616.1A EP1927667B1 (en) | 2005-09-16 | 2005-11-02 | A smelting process of ferronickel with nickel oxide ore free of crystal water in a blast furnace |
| JP2008530296A JP4734414B2 (en) | 2005-09-16 | 2005-11-02 | Method of refining nickel oxide ore containing no crystal water into nickel iron in a blast furnace |
| PCT/CN2005/001827 WO2006050658A1 (en) | 2005-09-16 | 2005-11-02 | A smelting process of ferronickel with nickel oxide ore free of crystal water in a blast furnace |
| KR1020107006684A KR20100039908A (en) | 2005-09-16 | 2005-11-02 | A smelting process of ferronickel with nickel oxide ore free of crystal water in a blast furnace |
| KR1020067017169A KR20070085069A (en) | 2005-09-16 | 2005-11-02 | A smelting process of ferronickel with nickel oxide ore free of crystal water in a blast furnace |
| AU2005304190A AU2005304190B2 (en) | 2005-09-16 | 2005-11-02 | A smelting process of ferronickel with nickel oxide ore free of crystal water in a blast furnace |
| MYPI20064302A MY140939A (en) | 2005-09-16 | 2006-10-10 | A smelting process of ferronickel with nickel oxide ore free of crystal water in a blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101029845A CN1306049C (en) | 2005-09-16 | 2005-09-16 | Ferronickel smelting process of nickel oxide ore free of crystal water in blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1733950A CN1733950A (en) | 2006-02-15 |
| CN1306049C true CN1306049C (en) | 2007-03-21 |
Family
ID=36076566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101029845A Expired - Fee Related CN1306049C (en) | 2005-09-16 | 2005-09-16 | Ferronickel smelting process of nickel oxide ore free of crystal water in blast furnace |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1927667B1 (en) |
| JP (1) | JP4734414B2 (en) |
| KR (2) | KR20070085069A (en) |
| CN (1) | CN1306049C (en) |
| AU (1) | AU2005304190B2 (en) |
| MY (1) | MY140939A (en) |
| WO (1) | WO2006050658A1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100595290C (en) * | 2006-09-06 | 2010-03-24 | 刘光火 | Technique for smelting nickel-cobalt-ferrum by nickel oxide ore through electrical furnace |
| KR101322897B1 (en) | 2007-05-11 | 2013-10-29 | 주식회사 포스코 | Method for manufacturing molten irons comprising nickels |
| CN101680042B (en) * | 2007-05-11 | 2013-02-20 | Posco公司 | Method for manufacturing molten iron comprising nickel |
| KR101322898B1 (en) * | 2007-05-11 | 2013-10-29 | 주식회사 포스코 | Method for manufacturing molten irons comprising nickels |
| KR100948926B1 (en) | 2007-07-23 | 2010-03-24 | 주식회사 포스코 | Method for manufacturing molten iron comprising nickel |
| CN101932739A (en) * | 2007-10-26 | 2010-12-29 | Bhp比利顿创新公司 | The production of nickel |
| CN101353708B (en) * | 2008-09-11 | 2010-06-02 | 张家港浦项不锈钢有限公司 | Nickel iron smelting process with nickel oxide ore and stainless steel production wastes as raw materials |
| KR101009034B1 (en) * | 2008-09-19 | 2011-01-17 | 주식회사 포스코 | Method of forming a ferronikel |
| CN101392331B (en) * | 2008-10-10 | 2010-08-25 | 建德市新安江镍合金有限公司 | Smelting technique for processing nickel ore by rotary kiln |
| CN102212681B (en) * | 2010-12-27 | 2013-03-27 | 池州市润鹏冶金科技有限公司 | Sintering synergistic agent and use method thereof |
| CN102650002A (en) * | 2011-02-25 | 2012-08-29 | 云南锡业集团（控股）有限责任公司 | Improved method for smelting laterite nickel ore to produce nickelferrite or nickel matte |
| FI123241B (en) * | 2011-06-13 | 2013-01-15 | Outokumpu Oy | Process for improving the degree of reduction in melting of a ferro-mixture |
| CN102965521B (en) * | 2012-11-26 | 2013-11-20 | 罕王实业集团有限公司 | Method for nickel laterite ore through adopting wet pellet smelting lower temperature reduction mode |
| CN103131872B (en) * | 2013-02-20 | 2015-06-03 | 罕王实业集团有限公司 | Method of controlling temperature of energy-saving environment-friendly laterite-nickel ore smelting shaft furnace through aluminothermic process |
| FI126718B (en) * | 2013-12-17 | 2017-04-28 | Outotec Finland Oy | Process for utilizing dust from a ferro-nickel process and sintered pellets prepared by the process |
| CN103773948B (en) * | 2014-01-30 | 2015-08-26 | 首钢总公司 | Method for using iron ore powder in iron-making system |
| CN104060084A (en) * | 2014-05-08 | 2014-09-24 | 无锡市阳泰冶金炉料有限公司 | Nickeliferous poor chromite separation and enrichment smelting method |
| CN104911288B (en) * | 2015-04-14 | 2017-09-29 | 四川金广实业（集团）股份有限公司 | Reduce the blast furnace process lateritic nickel ore method of slag oxidation content of magnesium |
| NO346383B1 (en) * | 2017-05-05 | 2022-07-04 | Knut Henriksen | Method for converting a waste material from sulphide ore based nickel refining into nickel pig iron |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237641A (en) * | 1999-06-15 | 1999-12-08 | 吉林省冶金研究院 | Technological process for extracting Ni, Cu, Co and Mg from nickel sulfide preparation concentrate and making nickelferrite |
| WO2005001284A2 (en) * | 2003-06-27 | 2005-01-06 | Analog Devices, Inc. | Pulse width modulated common mode feedback loop and method for differential charge pump |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1290436A (en) * | 1969-04-30 | 1972-09-27 | ||
| SE354297B (en) * | 1971-07-16 | 1973-03-05 | Avesta Jernverks Ab | |
| JPS62290842A (en) * | 1986-06-10 | 1987-12-17 | Nippon Kokan Kk <Nkk> | Manufacture of ferronickel |
| JPS62290843A (en) * | 1986-06-10 | 1987-12-17 | Nippon Kokan Kk <Nkk> | Production of ferronickel |
| AUPN639995A0 (en) * | 1995-11-03 | 1995-11-30 | Technological Resources Pty Limited | A method and an apparatus for producing metals and metal alloys |
| RU2132400C1 (en) * | 1998-09-03 | 1999-06-27 | Открытое акционерное общество "Серовский металлургический завод" | Method of processing oxidized nickel ores |
| RU2157412C1 (en) * | 1999-04-19 | 2000-10-10 | ЗАО "Научно-производственное предприятие ФАН" | Method of production of blast-furnace ferronickel |
| JP2001303113A (en) * | 2000-04-26 | 2001-10-31 | Mitsui Matsushima Co Ltd | METHOD FOR UTILIZING COAL HAVING MUCH CaO COMPONENT AND Fe2O3 COMPONENT IN BURNT ASH |
| CN1257295C (en) * | 2004-11-15 | 2006-05-24 | 四川川投峨眉铁合金（集团）有限责任公司 | Production method for extracting nickel by pyrogenic process |
-
2005
- 2005-09-16 CN CNB2005101029845A patent/CN1306049C/en not_active Expired - Fee Related
- 2005-11-02 WO PCT/CN2005/001827 patent/WO2006050658A1/en active Application Filing
- 2005-11-02 AU AU2005304190A patent/AU2005304190B2/en not_active Ceased
- 2005-11-02 KR KR1020067017169A patent/KR20070085069A/en active Application Filing
- 2005-11-02 EP EP05803616.1A patent/EP1927667B1/en not_active Not-in-force
- 2005-11-02 JP JP2008530296A patent/JP4734414B2/en not_active Expired - Fee Related
- 2005-11-02 KR KR1020107006684A patent/KR20100039908A/en not_active Application Discontinuation
-
2006
- 2006-10-10 MY MYPI20064302A patent/MY140939A/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237641A (en) * | 1999-06-15 | 1999-12-08 | 吉林省冶金研究院 | Technological process for extracting Ni, Cu, Co and Mg from nickel sulfide preparation concentrate and making nickelferrite |
| WO2005001284A2 (en) * | 2003-06-27 | 2005-01-06 | Analog Devices, Inc. | Pulse width modulated common mode feedback loop and method for differential charge pump |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20100039908A (en) | 2010-04-16 |
| EP1927667A1 (en) | 2008-06-04 |
| MY140939A (en) | 2010-02-12 |
| CN1733950A (en) | 2006-02-15 |
| JP2009508004A (en) | 2009-02-26 |
| EP1927667A4 (en) | 2008-11-05 |
| AU2005304190A1 (en) | 2006-05-18 |
| JP4734414B2 (en) | 2011-07-27 |
| KR20070085069A (en) | 2007-08-27 |
| EP1927667B1 (en) | 2013-06-19 |
| AU2005304190B2 (en) | 2009-09-17 |
| WO2006050658A1 (en) | 2006-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1306049C (en) | Ferronickel smelting process of nickel oxide ore free of crystal water in blast furnace | |
| CN1300352C (en) | Nickel-iron smelting process from nickel oxide ore containing crystal water through blast furnace | |
| CN101775451B (en) | Blast-furnace smelting method for vanadium titano-magnetite | |
| CN101353708B (en) | Nickel iron smelting process with nickel oxide ore and stainless steel production wastes as raw materials | |
| CN104878289B (en) | High cerium mischmetal Antaciron and its production method | |
| CN101463403B (en) | Nickel iron smelting technique by laterite nickel ore | |
| CN107365093A (en) | A kind of preparation method of the active copper ashes of binder materials | |
| CN102643976B (en) | Composite additive for producing nickel-iron particles by using laterite, and application method thereof | |
| CN1970807A (en) | Process for electrosmelting ferronickel | |
| CN101353709B (en) | Nickel iron smelting process with nickel oxide ore and stainless steel production wastes as raw materials | |
| CN1415766A (en) | Composite ball rolls of manganese and its preparation method | |
| CN103757165B (en) | A kind of high-iron bauxite blast-furnace smelting has valency constituent element method of comprehensive utilization | |
| CN102560240A (en) | Method for producing ferro-nickel alloy with laterite | |
| CN113957185B (en) | Furnace charge formula for smelting vanadium-titanium magnetite in blast furnace | |
| CN101063185A (en) | Nickel-ferrum smelting technique for nickel oxide ore by submerged arc furnace | |
| CN102534208B (en) | Method for alkaline leaching of waste residue containing zinc ferrite or lean zinc ore | |
| CN103911507A (en) | Burdening optimization method for sintering | |
| CN100595290C (en) | Technique for smelting nickel-cobalt-ferrum by nickel oxide ore through electrical furnace | |
| CN102534064A (en) | Composite blast furnace slag viscosity regulator and application thereof | |
| CN100424190C (en) | Sponge iron for furnace charge and its manufacturing method | |
| CN104195277A (en) | Method for recovering and reducing iron powder from smelting slag of lead zinc ores | |
| CN104911288A (en) | Blast furnace smelting laterite nickel ore method to reduce magnesium oxide content in slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IP01 | Partial invalidation of patent right |
Commission number: 4W01961 Conclusion of examination: Announcement No. 200510102984.5 invention patent claims 1, 2 and the right to claim the 4-7 reference scheme 1 invalid requirements in the claims and rights of claim 3 4-7 reference is based on the 3 to maintain the patent valid requirements. Decision date of declaring invalidation: 20090201 Decision number of declaring invalidation: 12819 Denomination of invention: Ferronickel smelting process of nickel oxide ore free of crystal water in blast furnace Granted publication date: 20070321 Patentee: Liu Shenjie |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070321 Termination date: 20130916 |