CN1523122A - Carburant for steel-making and producing process and method of using thereof - Google Patents
Carburant for steel-making and producing process and method of using thereof Download PDFInfo
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- CN1523122A CN1523122A CNA031247989A CN03124798A CN1523122A CN 1523122 A CN1523122 A CN 1523122A CN A031247989 A CNA031247989 A CN A031247989A CN 03124798 A CN03124798 A CN 03124798A CN 1523122 A CN1523122 A CN 1523122A
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- steel
- binding agent
- reductor
- carbonaceous material
- carbon
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000009628 steelmaking Methods 0.000 title description 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 24
- 239000011230 binding agent Substances 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000003723 Smelting Methods 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000003575 carbonaceous material Substances 0.000 claims description 18
- 230000003750 conditioning effect Effects 0.000 claims description 15
- 238000007670 refining Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 10
- 238000010079 rubber tapping Methods 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 239000002893 slag Substances 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000000571 coke Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 3
- 235000011194 food seasoning agent Nutrition 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 2
- 229920001131 Pulp (paper) Polymers 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 239000011295 pitch Substances 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims 1
- 238000003756 stirring Methods 0.000 abstract description 4
- 238000000227 grinding Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000001035 drying Methods 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 8
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 6
- 229910000640 Fe alloy Inorganic materials 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000013467 fragmentation Methods 0.000 description 3
- 238000006062 fragmentation reaction Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910000882 Ca alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The present invention discloses a carburizer for smelting steel, its production process and application method. It is formed from carbon-containing material, deioxidizer, specific weight regulating agent and binding agent according to a certain ratio. Its production process includes the following steps: respectively breaking carbon-containing material, deoxidizer and specific weight regulating agent, grinding them into powder materials respectively, uniformly mixing them in a stirring machine, adding binding agent and uniformly mixing them, using forming machine to make them into solid granules, ove-drying and roasting, cooling and packaging so as to obtain the invented carburizer. Said invention also provides its application method and concrete steps, and its effect.
Description
Technical field the present invention relates to a kind of ferrous metallurgy and machinery of being applied to the steel-smelting carburant of foundry enterprise and produce the technology of this carburelant and the using method of this carburelant, belongs to the C21C5/00 class.
Background technology is carried out carburelant to molten steel at present in the STEELMAKING PRODUCTION process method is mainly to utilize carbonaceous material (as graphite, class graphite, electrode powder, refinery coke, Jiao Li etc.) and contain carbon-iron alloy and joins in the molten steel at tapping process and refining process and handle molten steel is carried out carburetting.Though this kind carbonaceous material is used extensively and technical maturity, this carburelant is generally meal (small quantities of particles is arranged), and proportion is little, therefore very easily produce airborne dust in use, float again at the top of the slag, cause environmental pollution, the rate of recovery of carbon is controlled by slag of different nature, carburetting rate instability, powder is exposed in the air easily, causes the scaling loss height of carbon, thereby the rate of recovery of carbon lower (generally about 85%), cause carbon Local enrichment in molten steel easily, and cause carbon on the low side.To with containing carbon-iron alloy, the carburetting rate of recovery stable and carbon is higher, but following defective is also arranged: 1. price height causes the smelting cost height; 2. carbon increasing amount is contained the restriction of other alloying element in the carbon-iron alloy, and operation easier is also bigger, is not a kind of ideal carburetting material.
Summary of the invention the object of the present invention is to provide the compound iron carbon carburelant of the solid granular that a kind of proportion is big, the carbon rate of recovery is stable, the production technique and the using method that have proposed to produce this compound iron carbon carburelant simultaneously.
For achieving the above object, the technical solution used in the present invention: the technical program is divided into composition, proportioning and production technique and the using method of compound iron carbon carburelant.
Steel-smelting carburant is by carbonaceous material, reductor, proportion conditioning agent and binding agent are formed, earlier carbonaceous material, the proportion conditioning agent, reductor becomes the particle of 0～45mm respectively with crusher in crushing, the small-particle that sieves respectively 0～6mm stays then, macrobead is ground to form 0～250 purpose powder with ball mill or Raymond mill etc., small-particle and 0～250 purpose powder of 0～6mm are mixed as raw material, by weight percentage various raw materials were put into the stirrer mixing 2～55 minutes, added the binding agent remix 2～65 minutes, with shaper the mixing material is made solid particulate, with solid particulate seasoning at room temperature or at the oven dry in 2～60 hours of 25～750 ℃ of roasting temperatures, naturally cooling test package warehouse-in.
Adopt the steel-smelting carburant that as above technical scheme provides and the production technique and the using method of this carburelant, compared with prior art its advantage is:
1. because the proportion of carburelant is a bit larger tham the proportion of slag, and be solid granular, when carrying out adding molten steel in the refining process in tapping or to molten steel, carburelant will sink to below the interface of molten steel and slag, under the high-temperature molten steel condition, carburelant constantly melts, and carbon is fused in the molten steel admittedly, and molten steel is played recarburization; 2. because of carburelant is a particulate state, in use can not produce airborne dust, the non-environmental-pollution problem exists; 3. because of carburelant melts at molten steel and below the slag interface, can not cause carbon to expose and reduce of the influence of slag character, so the carbon rate of recovery can reach more than 90% the carbon rate of recovery in the air neutralization; 4. this carburelant is granular composite C-Fe, and carbon diffuses in the molten steel, is necessarily blowing under the hydrogen effect of (Ar) time, and carbon can more evenly enter in the molten steel, does not contain and causes carbon segregation, and cost is lower; 5. certain desoxydatoin is arranged, can save the consumption of reductor.
Below the embodiment the specific embodiment of the present invention is further described.
A kind of steel-smelting carburant of the present invention is made up of carbonaceous material, reductor, proportion conditioning agent and binding agent.Reductor accounts for 1～15% of weight, and the proportion conditioning agent accounts for 2～25% of weight, and carbonaceous material accounts for 60～94% of weight percent, and binding agent accounts for 2～15% of weight percent.Wherein reductor is metallic aluminium (Al), silicon (Si), calcium (Ca), silicon carbide (SiC), ferrosilicon (Si-Fe), silicon-calcium alloy (Si-Ca) etc.; Proportion is adjusted and is abrasive grit, steel or scum grain, iron scale, iron filings etc., and its iron-holder is 70～90%; Carbonaceous material is coke, coal, graphite, class graphite, pitch, refinery coke, electrode powder etc., and its carbon content is 70～100%; Binding agent is water glass, resin, pitch, paper pulp, tar, sugared slag, water etc.
With carbonaceous material, the proportion conditioning agent, reductor becomes the particle of 0～45mm respectively with crusher in crushing, the small-particle that sieves respectively 0～6mm stays then, macrobead is ground to form 0～250 purpose powder with ball mill or Raymond mill, small-particle and 0～250 purpose powder of 0～6mm are mixed as raw material, by weight percentage various raw materials were put into the stirrer mixing 2～55 minutes, added the binding agent remix 2～65 minutes, with shaper the mixing material is made solid particulate, dried in 2～60 hours with solid particulate seasoning at room temperature or at 25～750 ℃ of roasting temperatures, naturally cooling packing warehouse-in is stand-by.
The using method of the steel-smelting carburant that provides with as above composition, proportioning and production technique is: in tapping or liquid steel refining process carburelant is joined in the molten steel, gone out to enter after steel or refining process finish Argon (Ar) and stood and again molten steel is carried out the Argon processing and cast in 0～8 minute.
As above prescription and the steel-smelting carburant made of production technique are applied to respectively in 30 tons of electric furnaces and the 100 tons of converters.Show at 30 tons of electric furnace application results: 1. the carbon rate of recovery is stabilized in more than 90～95%; 2. adition process does not have dust raising phenomenon; 3. the carbon segregation phenomenon does not take place in the steel; Compare 2.0～5.0 yuan of/ton steel that reduce production costs with using the carbonaceous carburelant when 4. smelting carbon content and be 0.45% carbon steel, compare 3.0～7.0 yuan of/ton steel that reduce production costs with using iron alloy.Application result shows in 100 tons of converters: 1. the carbon rate of recovery is stabilized in more than 90～95%; 2. add and also do not have the dust raising phenomenon generation; 3. carbon-free segregation phenomena in the steel; When 4. platform refining carbon content is 0.45% carbon steel, compare 2.5～5.5 yuan of/ton steel that to reduce production costs, compare 3.5～8.0 yuan of/ton steel that to reduce production costs with using high-carbbon iron alloy with using carbonaceous carburetting; 5. easy to operate, need not change existing charging technology.
All the other embodiment:
Embodiment 1
With reductor 5%, proportion conditioning agent 10%, carbonaceous material 75%, binding agent 2.5%, with reductor, proportion conditioning agent, carbonaceous material fragmentation, grinding, stirring and evenly mixing, add binding agent, mixing is made solid particulate, 25～750 ℃ of roasting temperatures 2～60 hours, naturally cooling was stand-by.In tapping or liquid steel refining process carburelant is joined in the molten steel, tapping or refining finish back oxygen blast (Ar) processing and burnt casting in 0～8 minute.
Embodiment 2
With reductor 10%, proportion conditioning agent 15%, carbonaceous material 65%, binding agent 3.0%, with reductor, proportion conditioning agent, carbonaceous material fragmentation, grinding, stirring and evenly mixing, add binding agent, mixing is made solid particulate, 25～750 ℃ of roasting temperatures 2～60 hours, naturally cooling was stand-by.In tapping or liquid steel refining process carburelant is joined in the molten steel, tapping or refining finish back oxygen blast (Ar) processing and burnt casting in 0～8 minute.
Embodiment 3
With reductor 13%, proportion conditioning agent 20%, carbonaceous material 85%, binding agent 4.5%, with reductor, proportion conditioning agent, carbonaceous material fragmentation, grind, stir, add binding agent, mixing is made solid and is stirred, 25～750 ℃ of roasting temperatures 2～60 hours, naturally cooling was stand-by.In tapping or liquid steel refining process carburelant is joined in the molten steel, tapping or refining finish back oxygen blast (Ar) processing and burnt casting in 0～8 minute.
Claims (3)
1, a kind of steel-smelting carburant, be made up of carbonaceous material, reductor, proportion conditioning agent, binding agent, it is characterized in that: reductor accounts for 1～15% of weight, and the proportion conditioning agent accounts for 2～25% of weight, binding agent accounts for 2～15% of weight, and all the other are carbonaceous material;
Carbonaceous material is coke, coal, graphite, class graphite, pitch, refinery coke, electrode powder, and its carbon content is 70～100%;
Reductor is aluminium, silicon, calcium, silicon carbide, ferrosilicon, silicocalcium;
The proportion conditioning agent is abrasive grit, steel or scum, iron scale, iron filings, and its iron-holder is 70～90%;
Binding agent is water glass, resin, pitch, paper pulp, tar, sugared slag, water.
2, a kind of production technique according to the described steel-smelting carburant of claim 1, it is characterized in that: with carbonaceous material, the proportion conditioning agent, reductor becomes the particle of 0～45mm respectively with crusher in crushing, the small-particle that sieves respectively 0～6mm stays then, macrobead is ground to form 0～250 purpose powder with ball mill or Raymond mill, small-particle and 0～250 purpose powder of 0～6mm are mixed as raw material, by weight percentage various raw materials were put into the stirrer mixing 2～55 minutes, added the binding agent remix 2～65 minutes, with shaper the mixing material is made solid particulate, with solid particulate seasoning at room temperature or in the oven dry in 2～60 hours of 25～750 ℃ of roasting temperatures, naturally cooling packing.
3, a kind of using method of steel-smelting carburant according to claim 1, it is characterized in that: in tapping or liquid steel refining process, carburelant is joined in the molten steel, gone out to enter after steel or refining process finish Argon (Ar) and stood and again molten steel is carried out the Argon processing and cast in 0～8 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03124798 CN1212408C (en) | 2003-09-04 | 2003-09-04 | Carburant for steel-making and producing process and method of using thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03124798 CN1212408C (en) | 2003-09-04 | 2003-09-04 | Carburant for steel-making and producing process and method of using thereof |
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| Publication Number | Publication Date |
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| CN1523122A true CN1523122A (en) | 2004-08-25 |
| CN1212408C CN1212408C (en) | 2005-07-27 |
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| CN 03124798 Expired - Fee Related CN1212408C (en) | 2003-09-04 | 2003-09-04 | Carburant for steel-making and producing process and method of using thereof |
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Cited By (33)
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| CN100392114C (en) * | 2006-03-13 | 2008-06-04 | 上海盛宝钢铁冶金炉料有限公司 | Steel-smelting and carburating method |
| CN100402671C (en) * | 2006-03-13 | 2008-07-16 | 上海盛宝钢铁冶金炉料有限公司 | Steel smelting and carburating method |
| WO2008083594A1 (en) * | 2006-12-30 | 2008-07-17 | Qingdao Deshipu Metallurgy Science & Technology Co. Ltd | Lime-based additive for steel smelting and the preparation method thereof |
| CN101696463A (en) * | 2009-10-23 | 2010-04-21 | 西峡县合力冶金辅料有限公司 | Steel-making heat-generating agent of semisteel subjected to vanadium extraction |
| CN101892349A (en) * | 2010-03-24 | 2010-11-24 | 王永梅 | Stainless steel dephosphorized carburant |
| CN1818088B (en) * | 2006-03-13 | 2011-08-10 | 上海盛宝钢铁冶金炉料有限公司 | Steel smelting and carburating method |
| CN102251073A (en) * | 2011-07-08 | 2011-11-23 | 攀钢集团有限公司 | Deoxidizing and carburizing agent for semisteel, and preparation and application methods thereof |
| CN102925616A (en) * | 2011-08-08 | 2013-02-13 | 攀钢集团有限公司 | Smelting method of vanadium-containing molten iron |
| CN103160644A (en) * | 2013-03-13 | 2013-06-19 | 北京中渣冶金技术有限公司 | Production device, preparation method and use method of low-nitrogen carburant for clean steel refining |
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| CN104962691A (en) * | 2015-06-01 | 2015-10-07 | 铜陵市明诚铸造有限责任公司 | Short carbon fiber-doped porous reinforced recarburizing agent recycling waste graphite electrode, and preparation method thereof |
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- 2003-09-04 CN CN 03124798 patent/CN1212408C/en not_active Expired - Fee Related
Cited By (38)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100392114C (en) * | 2006-03-13 | 2008-06-04 | 上海盛宝钢铁冶金炉料有限公司 | Steel-smelting and carburating method |
| CN100402671C (en) * | 2006-03-13 | 2008-07-16 | 上海盛宝钢铁冶金炉料有限公司 | Steel smelting and carburating method |
| CN1818088B (en) * | 2006-03-13 | 2011-08-10 | 上海盛宝钢铁冶金炉料有限公司 | Steel smelting and carburating method |
| WO2008083594A1 (en) * | 2006-12-30 | 2008-07-17 | Qingdao Deshipu Metallurgy Science & Technology Co. Ltd | Lime-based additive for steel smelting and the preparation method thereof |
| CN101696463A (en) * | 2009-10-23 | 2010-04-21 | 西峡县合力冶金辅料有限公司 | Steel-making heat-generating agent of semisteel subjected to vanadium extraction |
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