CN106191472A - A kind of method that ilmenite concentrate metallized pellet hot charging enters stove - Google Patents
A kind of method that ilmenite concentrate metallized pellet hot charging enters stove Download PDFInfo
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- CN106191472A CN106191472A CN201610844665.XA CN201610844665A CN106191472A CN 106191472 A CN106191472 A CN 106191472A CN 201610844665 A CN201610844665 A CN 201610844665A CN 106191472 A CN106191472 A CN 106191472A
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- CN
- China
- Prior art keywords
- metallized pellet
- ilmenite concentrate
- hot charging
- pelletizing
- stove
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Classifications
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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
- C22B34/00—Obtaining refractory metals
- C22B34/10—Obtaining titanium, zirconium or hafnium
- C22B34/12—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08
- C22B34/1218—Obtaining titanium or titanium compounds from ores or scrap by metallurgical processing; preparation of titanium compounds from other titanium compounds see C01G23/00 - C01G23/08 obtaining titanium or titanium compounds from ores or scrap by dry processes
-
- 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
- C22B1/02—Roasting processes
-
- 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
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to titanium slag technical field of smelting, be specifically related to a kind of method that ilmenite concentrate metallized pellet hot charging enters stove.The technical problem to be solved is to provide a kind of method that ilmenite concentrate metallized pellet hot charging enters stove, comprise the following steps: A, roasting: pelletizing made by ilmenite concentrate and reducing agent in mass ratio 50 9～16, pelletizing is roasting 40～60min at 1350～1410 DEG C, obtain metallized pellet；B, smelting: metallized pellet is added the electric furnace with hollow electrode and smelts；Wherein, roaster and electric furnace use pipeline to couple together.Roaster and smelting furnace are coupled together by the inventive method by pipeline, are got up by the Btu utilization of metallized pellet, it is thus possible to be saved greatly smelting energy consumption.
Description
Technical field
The invention belongs to titanium slag technical field of smelting, be specifically related to a kind of ilmenite concentrate metallized pellet hot charging and enter the side of stove
Method.
Background technology
Climbing the titanium slag manufacturing enterprise that steel is current largest domestic, titanium slag production capacity is at about 180,000 tons/year, follow-up along with climbing steel
Titanium industry develops, increasing to the demand of titanium slag, improves the production capacity of titanium slag in the urgent need to the technology that exploitation is new.In order to it is low
Energy consumption ground smelting titanium slag, the heat of roasting gained metallized pellet to be collected, thus titanium slag melting electric consumption is greatly lowered, improve
Titanium slag production capacity.But, prior art does not the most find a kind of effective method to realize this purpose.
Summary of the invention
For above-mentioned technical problem to be solved, the invention provides a kind of ilmenite concentrate metallized pellet hot charging and enter stove
Method.Roaster and smelting furnace are used pipeline to couple together by the inventive method, and a step is with addition of reducing agent, thus in smelting process
Need not additionally join carbon, enormously simplify the operation of smelting titanium slag and the consumption of heat；In order to coordinate a step with addition of reducing agent,
The technological parameter during roasting of the inventive method reasonably adjusting and optimizing；Metallized pellet is direct and hollow electrode pair after coming out of the stove
Connect, thus maximally utilised the heat of metallized pellet, decrease energy consumption.
The technical problem to be solved is to provide a kind of method that ilmenite concentrate metallized pellet hot charging enters stove.The party
Method comprises the following steps:
A, roasting: ilmenite concentrate and reducing agent are made pelletizing, and pelletizing is roasting 40～60min at 1350～1410 DEG C,
To metallized pellet；Wherein, ilmenite concentrate and reducing agent mass ratio are 50 9～16；
B, smelting: metallized pellet is added the electric furnace with hollow electrode and smelts；Wherein, roaster and electric furnace are adopted
Couple together with pipeline.
Preferably, in said method, described reducing agent is at least one in anthracite, coke or graphite.
Preferably, in said method, making pelletizing also needs additionally to add appropriate binding agent and water.
Preferably, in said method, described binding agent is bentonite.
Preferably, in said method, between roaster and electric furnace, it is provided with buffer unit, feeding device.
Preferably, in said method, the charging rate controlling metallized pellet is mated with electric furnace volume of production.
Further, in said method, the charging rate of described metallized pellet is 3.5～30 tons/h, the total work of electric furnace
Rate is 3200～30000kVA.
The inventive method adds reducing agent by a step and enormously simplify operating procedure, and, the inventive method is by roasting
Stove and smelting furnace couple together, and coordinate suitable process conditions, finally in the case of obtaining same grade titanium slag, significantly save
About energy consumption.
Detailed description of the invention
During titanium slag is prepared in smelting, in order to low energy consumption ground smelting titanium slag, roasting gained to be collected metallization ball
The heat of group, thus titanium slag melting electric consumption is greatly lowered, improve titanium slag production capacity.In order to reduce roasting gained metallized pellet
Loss, roaster and smelting furnace pipeline are coupled together by the present invention, make metallized pellet go out roaster and the most directly arrive smelting
Stove, centre arranges buffer unit and feeding device simultaneously, thus controls charging rate and match with electric furnace smelting ability.Due to roasting
Burn stove and smelting furnace is associated, then the reducing agent required for reaction need to add at roasting back, thus in smelting process not
Need additionally to join carbon, enormously simplify the operation of smelting titanium slag；But, it is simply that owing to reducing agent one step adds, conventional roasting
Technique cannot adapt to, so, inventor has done again substantial amounts of experiment and has finally readjusted roasting technique.
So, the method that ilmenite concentrate metallized pellet hot charging of the present invention enters stove, comprise the following steps:
A, roasting: ilmenite concentrate, reducing agent and appropriate binding agent, water mixing are made pelletizing, and pelletizing is 1360～1400
At DEG C, roasting 40～60min, obtain metallized pellet；Wherein, ilmenite concentrate and reducing agent mass ratio are 50 9～16；Gained metal
In pellet, C content is 2～10%, TiO2Content be 45～47%, FeO content be 8～20%；This step main purpose is
Fixed carbon and ferrum, titanium oxide react production metallic iron and the low oxide of titanium；
B, smelting: use pipeline to couple together roaster and electric furnace, by this pipeline, metallized pellet is added direct current
Hollow electrode electric furnace carries out smelting；This step main purpose be the intensification of slag ferrum, slag sluicing system, iron oxides further also
Former.
Preferably, in said method, described reducing agent is at least one in anthracite, coke or graphite.
Preferably, in said method, described binding agent is bentonite.
Preferably, in said method, between roaster and electric furnace, it is additionally provided with buffer unit, feeding device.
Preferably, in said method, the charging rate controlling metallized pellet is mated with electric furnace volume of production.
Further, in said method, the charging rate of metallized pellet is 3.5～30 tons/h, and the general power of electric furnace is
3200～30000kVA.
Embodiment 1
3200kVA titanium slag electric furnace, according to the TiO of target titanium slag2Content be 72%, by controlling reducing agent and ilmenite concentrate
Ratio be 20% to prepare pelletizing, controlling pelletizing roasting time in rotary hearth furnace is 60min and temperature is the parameters such as 1360 DEG C,
Obtain C content about 8%, TiO2About 45.5%, FeO content about 18% carbonaceous metallized pellet, metallize ball
Group goes out the temperature of rotary hearth furnace at 700 DEG C, and pelletizing is entered in stove by buffer bin, feeding device, hollow electrode, the charging of pelletizing
Speed controlling, in 3.5 ton hour (production capacity of supporting reduction apparatus 30,000 tons/year), is continuously added in stove.Electric furnace needs temporary cessation of production
Time, open part flow arrangement, pelletizing water-spraying control processes, and gets the raw materials ready use as production.The present embodiment ton slag melting power consumption 1525kWh
Left and right.
Embodiment 2
12500kVA titanium slag electric furnace, according to the TiO of target titanium slag2Content be 74.5%, by controlling reducing agent and titanium
The ratio of concentrate be 25% prepare pelletizing, to control pelletizing roasting time in rotary hearth furnace be 50min and temperature is 1380 DEG C etc.
Parameter, obtain C content about 6%, TiO2About 47%, FeO content about 15% carbonaceous metallized pellet, metal
Pellet goes out the temperature of rotary hearth furnace at 800 DEG C, and pelletizing enters in stove by buffer bin, feeding device, hollow electrode, pelletizing
Charging rate controls, in 12 ton hour (production capacity of supporting reduction apparatus 100,000 tons/year), to be continuously added in stove.Electric furnace needs interim
During stopping production, opening part flow arrangement, pelletizing water-spraying control processes, and gets the raw materials ready use as production.The present embodiment ton slag melting power consumption
About 1450kWh.
Embodiment 3
30000kVA titanium slag electric furnace, according to the TiO of target titanium slag2Content be 78%, by controlling reducing agent and titanium essence
The ratio in ore deposit be 30% prepare pelletizing, to control pelletizing roasting time in rotary hearth furnace be 60min and temperature is the ginsengs such as 1400 DEG C
Number, obtain C content about 4%, TiO2About 47%, FeO content about 10% carbonaceous metallized pellet, metallization
Pelletizing goes out the temperature of rotary hearth furnace at 850 DEG C, and pelletizing enters in stove by buffer bin, feeding device, hollow electrode, adding of pelletizing
Material speed controlling, in 30 ton hour (supporting reduction apparatus pelletizing production capacity 250,000 tons/year), is continuously added in stove.Electric furnace needs interim
During stopping production, opening part flow arrangement, pelletizing water-spraying control processes, and gets the raw materials ready use as production.The present embodiment ton slag melting power consumption
About 1325kWh.
Comparative example
With same TiO2Content (47%) titanium material smelting titanium slag, smelting titanium slag on 30000kVA electric furnace, target titanium slag
Grade all considers by 47.5%, uses following three kinds of methods to smelt.
First method is: ilmenite concentrate directly enters stove smelting titanium slag；
Second method is: conventional hot-mounting process metallized pellet smelting titanium slag；
The third method is: the carbonaceous metallized pellet hot charging of the present invention enters stove；
After smelting terminates, the ton slag melting power consumption of first method exists at about 2100kWh, second method melting electric consumption
About 1600kWh；The third method ton slag melting power consumption is at about 1325kWh.As can be seen here, the inventive method is by reasonably
Roaster and smelting furnace are coupled together by mode, adjusting process parameter, are finally greatly saved on the basis of obtaining effect same
Energy consumption.
Claims (7)
1. the method that ilmenite concentrate metallized pellet hot charging enters stove, it is characterised in that: comprise the following steps:
A, roasting: ilmenite concentrate and reducing agent are made pelletizing, and pelletizing is roasting 40～60min at 1350～1410 DEG C, obtain gold
Belong to pellet；Wherein, ilmenite concentrate and reducing agent mass ratio are 50 9～16；
B, smelting: metallized pellet is added the electric furnace with hollow electrode and smelts；Wherein, roaster and electric furnace use pipe
Road couples together.
The method that ilmenite concentrate metallized pellet hot charging the most according to claim 1 enters stove, it is characterised in that: described reducing agent
For at least one in anthracite, coke or graphite.
The method that ilmenite concentrate metallized pellet hot charging the most according to claim 1 enters stove, it is characterised in that: make pelletizing also
Need to additionally add appropriate binding agent and water.
The method that ilmenite concentrate metallized pellet hot charging the most according to claim 3 enters stove, it is characterised in that: described bonding
Agent is bentonite.
The method that ilmenite concentrate metallized pellet hot charging the most according to claim 1 enters stove, it is characterised in that: roaster and electricity
Buffer unit, feeding device it is provided with between stove.
The method that ilmenite concentrate metallized pellet hot charging the most according to claim 1 enters stove, it is characterised in that: control metallization
The charging rate of pelletizing is mated with electric furnace volume of production.
7. the method entering stove according to the ilmenite concentrate metallized pellet hot charging described in claim 5 or 6, it is characterised in that: described gold
The charging rate belonging to pellet is 3.5～30 tons/h, and the general power of electric furnace is 3200～30000kVA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610844665.XA CN106191472A (en) | 2016-09-23 | 2016-09-23 | A kind of method that ilmenite concentrate metallized pellet hot charging enters stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610844665.XA CN106191472A (en) | 2016-09-23 | 2016-09-23 | A kind of method that ilmenite concentrate metallized pellet hot charging enters stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106191472A true CN106191472A (en) | 2016-12-07 |
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| CN201610844665.XA Pending CN106191472A (en) | 2016-09-23 | 2016-09-23 | A kind of method that ilmenite concentrate metallized pellet hot charging enters stove |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57158311A (en) * | 1981-03-27 | 1982-09-30 | Horii Taichi | Method and device for production of nickel chromium stainless steel ingot |
| CN101619371A (en) * | 2008-07-02 | 2010-01-06 | 四川龙蟒集团有限责任公司 | Method for recovering vanadium, titanium and iron from vanadium titanium magnetite |
| CN102399994A (en) * | 2011-11-18 | 2012-04-04 | 攀钢集团研究院有限公司 | Titanium slag smelting method |
| CN103305705A (en) * | 2013-06-28 | 2013-09-18 | 西安电炉研究所有限公司 | Large closed high titanium slag smelting special electric furnace with raw material preheating device |
| CN204185534U (en) * | 2014-10-17 | 2015-03-04 | 中国钢研科技集团有限公司 | A kind of diameter 40 meters of rotary hearth furnaces-molten point stove combined production line |
| CN105039627A (en) * | 2015-09-24 | 2015-11-11 | 重庆大学 | Coal-based direct reduction-melt separation furnace smelting reduction iron-making process using external heating mode |
-
2016
- 2016-09-23 CN CN201610844665.XA patent/CN106191472A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57158311A (en) * | 1981-03-27 | 1982-09-30 | Horii Taichi | Method and device for production of nickel chromium stainless steel ingot |
| CN101619371A (en) * | 2008-07-02 | 2010-01-06 | 四川龙蟒集团有限责任公司 | Method for recovering vanadium, titanium and iron from vanadium titanium magnetite |
| CN102399994A (en) * | 2011-11-18 | 2012-04-04 | 攀钢集团研究院有限公司 | Titanium slag smelting method |
| CN103305705A (en) * | 2013-06-28 | 2013-09-18 | 西安电炉研究所有限公司 | Large closed high titanium slag smelting special electric furnace with raw material preheating device |
| CN204185534U (en) * | 2014-10-17 | 2015-03-04 | 中国钢研科技集团有限公司 | A kind of diameter 40 meters of rotary hearth furnaces-molten point stove combined production line |
| CN105039627A (en) * | 2015-09-24 | 2015-11-11 | 重庆大学 | Coal-based direct reduction-melt separation furnace smelting reduction iron-making process using external heating mode |
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Application publication date: 20161207 |
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