CN101805194A - Furnace protecting agent for titanium concentrate sintering and preparation method thereof - Google Patents
Furnace protecting agent for titanium concentrate sintering and preparation method thereof Download PDFInfo
- Publication number
- CN101805194A CN101805194A CN201010126318A CN201010126318A CN101805194A CN 101805194 A CN101805194 A CN 101805194A CN 201010126318 A CN201010126318 A CN 201010126318A CN 201010126318 A CN201010126318 A CN 201010126318A CN 101805194 A CN101805194 A CN 101805194A
- Authority
- CN
- China
- Prior art keywords
- furnace
- titanium
- low
- protecting agent
- sintering
- 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.)
- Granted
Links
Landscapes
- Manufacture Of Iron (AREA)
Abstract
The invention discloses a furnace protecting agent for titanium concentrate sintering and a preparation method thereof, wherein the furnace protecting agent is prepared from the following components in proportion by weight: titanium dioxide (TiO2), a composition (CaO+MgO+SiO2+AL2O3) and total iron (TFe), and the preparation method comprises the following steps: selecting a titanium concentrate, compounding charcoal, mixing materials, distributing the materials, molding through sintering by a sintering machine and crushing, wherein the furnace wall at the eroded position of a furnace hearth is thinned, the temperature is lower than other regions to form a temperature gradient, and Ti (C, N) and attachments thereof are continuously accumulated and bonded at an eroded region until the temperature gradient relatively disappears under the action of the temperature gradient. The invention overcomes the abuse of large energy consumption due to unstable titanium content and high impurity content in the prior art, so that titanium carbonitride TiC, TiN or Ti(C,N) as an effective component can be generated by a blast furnace at the cost of minimum coke ratio, is formed in furnace hearth molten iron and is deposited on a working surface or in a brick joint at the eroded position of the furnace hearth to repair the eroded region to perform the action of protecting the furnace hearth.
Description
Technical field:
The present invention relates to a kind of blast furnace protecting material, particularly relate to a kind of titanium carbonitride blast furnace protecting agent and preparation method thereof.
Background technology:
Using the titaniferous material furnace retaining, is owing to reduction under hot conditions generates TiC, TiN or Ti high-melting-point compounds such as (C, N), is deposited on the cupola well furnace bottom, and it is formed protective layer.China's blast furnace successful Application titaniferous material furnace retaining technology, furnace protecting agents such as schreyerite, titaniferous pelletizing have all been obtained good effect in the long-lived practice of blast furnace.Be noted that State of Blast Furnace labour latter stage, adopting the titaniferous material furnace retaining is the major technique measure that prolongs blast furnace campaign.At present, carrying out the furnace retaining operation with the cooled agglomerated pellet of higher-grade ilmenite and water glass bonding crude titaniferous concentrate compacting has been accepted by the blast furnace operating person and has been extensive use of.Yet there is following shortcoming in this mode: 1) titanium dioxide have only part to form titanium carbonitride (Ti (C, N)) plays the furnace retaining effect, and remainder enters the waste that has caused titanium dioxide in the slag.2) increasing of the quantity of slag must consume the corresponding coke energy, for the ash content in this part coke of balance also will consume flux, and is a kind of vicious cycle.
Summary of the invention:
The objective of the invention is at the deficiencies in the prior art, a kind of titanium carbonitride blast furnace protecting agent and preparation method thereof is provided, technical problem to be solved is rationally to determine the composition and the content of furnace protecting agent, make the titanium carbonitride in the furnace protecting agent fully play the furnace retaining effect, rationally determine the preparation method of furnace protecting agent simultaneously, to guarantee the carbon nitriding rate of titanium, the technical solution used in the present invention is as follows:
A kind of titanium carbonitride blast furnace protecting agent is characterized in that being made up of by weight ratio following composition:
Titanium dioxide TiO
245～55%;
Composition CaO+MgO+SiO
2+ AL
2O
31～10%;
Full iron Tfe is greater than 30%.
A kind of preparation method of titanium carbonitride blast furnace protecting agent is characterized in that:
(1) select the ilmenite concentrate of low silicon, low-sulfur, low-phosphorous, low calcium and magnesium, high titanium dioxide according to industry standard, ilmenite concentrate powder mean particle size reaches-200 meshes greater than 80%;
(2) join charcoal: allocate coke powder into according to 4～6% of ilmenite concentrate quality, the coke powder ash content is lower than 15%, and sulphur content is low more good more, and mean particle size reaches-200 meshes, and to be fine into the ball effect more greater than 30% titanium valve good more, helps pellet sintering;
(3) batch mixing: mixing machine carries out batch mixing, moisture 8～10%, preferably add 2% wilkinite and do binding agent or other organic binder bonds, after the balling-up of ball dish, allocate the surface of ball into 1～2% coke powder as external combustion fuel according to the ilmenite concentrate quality again, the coke powder ash content is lower than 15%, and sulphur content is low more good more, and the coke powder mean particle size reaches-200 meshes greater than 50%;
(4) through belt the balling-up material is delivered to the sinter machine cloth;
(5) sinter machine sinter molding;
(6) according to the customer requirement crushing and screening.
The present invention adds the blast furnace mode: furnace protecting agent of the present invention is mixed in the pulverized coal injection into blast furna, coal dust with pulverized coal injection is sent into blast furnace, spray in the several minutes after selection of time is tapped a blast furnace, time is short more good more, this is because titanium carbonitride (Ti (C, N)) than great, (Ti (C, N)) has the enough time to separate with other slag, condense, fall behind down and infiltrate molten iron can to make titanium carbonitride.(C, N) how many content requirement is carried out the high-content titanium carbonitride (the blast furnace protecting agent add-on of Ti (C, N)) is regulated, till the molten iron result of laboratory test person that meets the blast furnace operating requires to Ti in the molten iron according to the blast furnace operating person.
Furnace retaining principle of the present invention: if a certain zone of cupola well owing to corrode makes the furnace wall attenuate, this point outwards heat radiation is faster than other positions, thereby make this regional temperature lower than other regional temperatures, this zone will form certain thermograde with other zones so, under the effect of this thermograde, (C N) moves and polymerization to erosion areas the Ti that forms in the molten iron, Ti (C, N) and dirt settling will constantly accumulation and bonding disappear relatively until thermograde in erosion areas.
Compared with prior art, the present invention has overcome the deficiencies in the prior art, and (C N) forms and is deposited on cupola well and weathers among the working face or brickwork joint at position in the cupola well molten iron, repair the effect that erosion areas plays the protection cupola well to make titanium carbonitride Ti.
Embodiment:
A kind of titanium carbonitride blast furnace protecting agent is characterized in that being made up of by weight ratio following composition:
Titanium dioxide TiO
245～55%
Composition CaO+MgO+SiO
2+ AL
2O
31～10%
Full iron Tfe is greater than 30%.
All iron content Tfe does not have the requirement of reaching the standard grade greater than 30%, is to determine according to requirement of client.
A kind of preparation method of titanium carbonitride blast furnace protecting agent is characterized in that:
(1) select the ilmenite concentrate of low silicon, low-sulfur, low-phosphorous, low calcium and magnesium, high titanium dioxide according to industry standard, the ilmenite concentrate powder mean particle size more than 80% reaches-200 meshes, and it is good more that titanium valve is fine into the ball effect more, helps pellet sintering.
Industry standard is as follows:
(2) join charcoal: allocate coke powder into according to 4～6% of ilmenite concentrate quality, the coke powder ash content is lower than 15%, and sulphur content is low more good more, and the coke powder mean particle size more than 30% will reach-200 meshes;
(3) batch mixing: mixing machine carries out batch mixing, moisture 8～10%, preferably add 2% wilkinite and do binding agent or other organic binder bonds, after the balling-up of ball dish, allocate the surface of ball into 1～2% coke powder as external combustion fuel according to the ilmenite concentrate quality again, the coke powder ash content is lower than 15%, and sulphur content is low more good more, and the coke powder mean particle size reaches-200 meshes greater than 50%;
(4) through belt the balling-up material is delivered to the sinter machine cloth;
(5) sinter machine sinter molding;
(6) according to the customer requirement crushing and screening.
Claims (2)
1. the furnace protecting agent of a titanium concentrate sintering is characterized in that being made up of by weight ratio following composition:
Titanium dioxide TiO
245～55%,
Composition CaO+MgO+SiO
2+ AL
2O
31～10%,
Full iron Tfe is greater than 30%.
2. the preparation method of the furnace protecting agent of a titanium concentrate sintering is characterized in that:
(1) select the ilmenite concentrate of low silicon, low-sulfur, low-phosphorous, low calcium and magnesium, high titanium dioxide according to industry standard, ilmenite concentrate powder mean particle size reach-200 meshes greater than 80%;
(2) join charcoal: allocate coke powder into according to 4～6% of ilmenite concentrate quality, the coke powder ash content is lower than 15%, and sulphur content is low more good more, mean particle size reach-200 meshes greater than 30%;
(3) batch mixing: mixing machine carries out batch mixing, moisture 8～10%, preferably add 2% wilkinite and do binding agent or other organic binder bonds, after the balling-up of ball dish, allocate the surface of ball into 1～2% coke powder as external combustion fuel according to the ilmenite concentrate quality again, the coke powder ash content is lower than 15%, and sulphur content is low more good more, the coke powder mean particle size reach-200 meshes greater than 50%;
(4) through belt the balling-up material is delivered to the sinter machine cloth;
(5) sinter machine sinter molding;
(6) according to the customer requirement crushing and screening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010126318 CN101805194B (en) | 2010-03-13 | 2010-03-13 | Furnace protecting agent for titanium concentrate sintering and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010126318 CN101805194B (en) | 2010-03-13 | 2010-03-13 | Furnace protecting agent for titanium concentrate sintering and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101805194A true CN101805194A (en) | 2010-08-18 |
| CN101805194B CN101805194B (en) | 2013-05-08 |
Family
ID=42607168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010126318 Expired - Fee Related CN101805194B (en) | 2010-03-13 | 2010-03-13 | Furnace protecting agent for titanium concentrate sintering and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101805194B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234199A (en) * | 2011-04-18 | 2011-11-09 | 西峡县新锦耐化有限责任公司 | High-titanium furnace protection stemming |
| CN102839241A (en) * | 2012-09-06 | 2012-12-26 | 莱芜钢铁集团有限公司 | Method for feeding titanium fine powder serviced as furnace protecting agent of blast furnace into furnace through injection system |
| CN102912066A (en) * | 2012-10-25 | 2013-02-06 | 莱芜钢铁集团有限公司 | Method for producing and adding blast furnace protection agent |
| CN103484664A (en) * | 2013-10-22 | 2014-01-01 | 成都天禄源商贸有限公司 | Titanium clinker for smelting high-titanium slag |
| TWI422687B (en) * | 2010-12-09 | 2014-01-11 | China Steel Corp | Method for protecting hearth of blast furnace |
| CN104478457A (en) * | 2014-12-29 | 2015-04-01 | 张婷 | Tap-hole clay for blast furnace of 2200m3 |
| CN112225541A (en) * | 2020-09-25 | 2021-01-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Electric furnace gunning material and gunning furnace protection method |
| CN112410485A (en) * | 2020-11-19 | 2021-02-26 | 福建三宝钢铁有限公司 | Low-titanium furnace protection process for blast furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040012901A1 (en) * | 2002-07-12 | 2004-01-22 | Kojovic Ljubomir A. | Electrical arc furnace protection system |
| CN101343674A (en) * | 2008-08-26 | 2009-01-14 | 攀枝花一立矿业股份有限公司 | High-titanium protection stove pellet ore and preparation thereof |
| CN101418371A (en) * | 2008-11-21 | 2009-04-29 | 攀钢集团成都钢铁有限责任公司 | Application of shaft furnace in baking full-vanadium ferrotitanium ore concentrate pellet ore |
| CN101613616A (en) * | 2009-07-31 | 2009-12-30 | 攀钢集团攀枝花钢铁研究院有限公司 | Coke for furnace protection and preparation method thereof |
-
2010
- 2010-03-13 CN CN 201010126318 patent/CN101805194B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040012901A1 (en) * | 2002-07-12 | 2004-01-22 | Kojovic Ljubomir A. | Electrical arc furnace protection system |
| CN101343674A (en) * | 2008-08-26 | 2009-01-14 | 攀枝花一立矿业股份有限公司 | High-titanium protection stove pellet ore and preparation thereof |
| CN101418371A (en) * | 2008-11-21 | 2009-04-29 | 攀钢集团成都钢铁有限责任公司 | Application of shaft furnace in baking full-vanadium ferrotitanium ore concentrate pellet ore |
| CN101613616A (en) * | 2009-07-31 | 2009-12-30 | 攀钢集团攀枝花钢铁研究院有限公司 | Coke for furnace protection and preparation method thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI422687B (en) * | 2010-12-09 | 2014-01-11 | China Steel Corp | Method for protecting hearth of blast furnace |
| CN102234199A (en) * | 2011-04-18 | 2011-11-09 | 西峡县新锦耐化有限责任公司 | High-titanium furnace protection stemming |
| CN102234199B (en) * | 2011-04-18 | 2013-01-23 | 西峡县新锦耐化有限责任公司 | High-titanium furnace protection stemming |
| CN102839241A (en) * | 2012-09-06 | 2012-12-26 | 莱芜钢铁集团有限公司 | Method for feeding titanium fine powder serviced as furnace protecting agent of blast furnace into furnace through injection system |
| CN102839241B (en) * | 2012-09-06 | 2014-12-10 | 莱芜钢铁集团有限公司 | Method for feeding titanium fine powder serviced as furnace protecting agent of blast furnace into furnace through injection system |
| CN102912066A (en) * | 2012-10-25 | 2013-02-06 | 莱芜钢铁集团有限公司 | Method for producing and adding blast furnace protection agent |
| CN103484664A (en) * | 2013-10-22 | 2014-01-01 | 成都天禄源商贸有限公司 | Titanium clinker for smelting high-titanium slag |
| CN104478457A (en) * | 2014-12-29 | 2015-04-01 | 张婷 | Tap-hole clay for blast furnace of 2200m3 |
| CN112225541A (en) * | 2020-09-25 | 2021-01-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Electric furnace gunning material and gunning furnace protection method |
| CN112225541B (en) * | 2020-09-25 | 2022-06-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Electric furnace gunning material and gunning furnace protection method |
| CN112410485A (en) * | 2020-11-19 | 2021-02-26 | 福建三宝钢铁有限公司 | Low-titanium furnace protection process for blast furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101805194B (en) | 2013-05-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101805194B (en) | Furnace protecting agent for titanium concentrate sintering and preparation method thereof | |
| CN103468840B (en) | Furnace-protecting material for blast furnaces and preparation and application methods thereof | |
| CN102443693A (en) | Sintering method of high-grade high-titania vanadium-titanium magnetite concentrate | |
| CN107382344A (en) | A kind of efficiently adhesive type high-titanium furnace protection stemming | |
| CN108950189A (en) | A method of sinter containing MgO is produced using waste magnesia carbon bricks | |
| CN104131130A (en) | Converter final-slag modifier and use thereof | |
| CN101798234A (en) | Titanium carbonitride blast furnace protecting agent and preparation method thereof | |
| CN105152656A (en) | Environmental friendly stemming for protecting blast furnace | |
| CN102320852A (en) | Furnace-protecting anhydrous stemming | |
| CN103011848B (en) | Self-flow repairing mass as well as preparation method and use method thereof | |
| CN107586903A (en) | A kind of blast furnace process furnace charge and blast furnace smelting method | |
| CN104276829A (en) | Stemming for inhibiting splashing of iron notch | |
| CN104419793B (en) | A kind of blast furnace protecting vanadium ferrotianium Jiao and its making and use method | |
| CN104388612B (en) | A kind of blast furnace low cost titanium ore furnace retaining method | |
| CN101967530B (en) | Method for reducing iron by smelting reduction in electrometallurgy | |
| CN104120206A (en) | Sintering ore for protecting blast furnace | |
| CN104911338B (en) | A kind of raw materials for sintering composition and acid vanadium titanium sintering deposit and its preparation method and application | |
| CN101613616A (en) | Coke for furnace protection and preparation method thereof | |
| CN111041139A (en) | Material distribution method for blast furnace blowing-in | |
| CN110256056A (en) | The titaniferous furnace retaining ramming mass and application method integrally repaired for blast furnace crucibe | |
| CN105420431A (en) | Blast furnace protecting agent prepared from titanium-containing slag and furnace protecting method | |
| CN101787295A (en) | Additive and method for improving coke quality | |
| CN105925744B (en) | The method of Dust of Iron And Steel Works production pearl iron is utilized under a kind of low temperature | |
| CN108660272B (en) | Blast furnace composite furnace protection burden and preparation and furnace protection methods thereof | |
| CN110128153A (en) | A kind of blast furnace taphole clay containing Titanium and preparation method thereof |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20150313 |
|
| EXPY | Termination of patent right or utility model |