CN1172010C - process for producing low-Ti High-C ferrochronium - Google Patents
process for producing low-Ti High-C ferrochronium Download PDFInfo
- Publication number
- CN1172010C CN1172010C CNB011315385A CN01131538A CN1172010C CN 1172010 C CN1172010 C CN 1172010C CN B011315385 A CNB011315385 A CN B011315385A CN 01131538 A CN01131538 A CN 01131538A CN 1172010 C CN1172010 C CN 1172010C
- Authority
- CN
- China
- Prior art keywords
- granularity
- coke
- silica
- present
- special steel
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000571 coke Substances 0.000 claims abstract description 10
- 238000003723 Smelting Methods 0.000 claims abstract description 9
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 9
- 239000002893 slag Substances 0.000 claims abstract description 7
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 6
- 229910000604 Ferrochrome Inorganic materials 0.000 claims description 3
- 241001417490 Sillaginidae Species 0.000 claims description 3
- 241001062472 Stokellia anisodon Species 0.000 claims description 3
- 239000010936 titanium Substances 0.000 abstract description 18
- 239000011651 chromium Substances 0.000 abstract description 8
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 239000000654 additive Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000996 additive effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 3
- 229910052593 corundum Inorganic materials 0.000 abstract 3
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 3
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 abstract 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- ZBHWCYGNOTVMJB-UHFFFAOYSA-N [C].[Cr].[Fe] Chemical compound [C].[Cr].[Fe] ZBHWCYGNOTVMJB-UHFFFAOYSA-N 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- GTBORTDXMNSMGB-UHFFFAOYSA-N [Cr].[Ti].[C] Chemical compound [Cr].[Ti].[C] GTBORTDXMNSMGB-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention discloses a production technology of low-titanium carbon chromium iron. Chromium ore comprises at least 40% of Cr2O3, 1.8 of Cr/Fe, 1 to 1.6 of (MgO+CaO)Al2O3 and at most 0.10% of Ti, and the granularity of the chromium ore is 40mm. Coke comprises at least 82% of fixing carbon, at most 15% of ash, at most 0.025% of P and at most 0.15% of Ti, and the granularity of the coke is from 6 to 18mm. Silica comprises at least 97% of SiO2 and at most 1.5% of Al2O3, the silica has no impurity after a water washing process, and the granularity of the silica is from 20 to 40mm. The raw materials of the chromium ore, the coke and the silica are mixed and smelted in a furnace, temperature in the furnace is from 1600 to 1800 DEG C, in a smelting process, the contents of the three slag types of MgO, SiO2 and Al2O3 are respectively from 32 to 38%, 28 to 32% and 22 to 27% by control, furnace materials are supplied in time in the smelting process, and particularly, the coke and magnesium materials are periodically added in an iron outlet area. The present invention comprises at most 0.03% of Ti and meets requirements for varieties with the character. According to a trial, when the present invention is used as an additive agent for producing special steel, the abrasion resistance and the strength of the special steel can be met, the market perspective of the special steel is good, and the present invention can cause the quality of the special steel products of China to be largely broken.
Description
Technical field
The present invention relates to a kind of smelting process for production of low titanium carbon chromium.
Background technology
At present, low titanium carbon chromium is mainly as the steel-making additive of special steel grade, as bearing steel etc.Before this product invention, owing to lack the low titanium additives of high-quality, aspects such as the intensity of China's bearing and wear resistance exist obvious defects.
Summary of the invention
The object of the present invention is to provide a kind of production technique of low-Ti high-C ferrochronium.
The objective of the invention is to realize: a kind of process for producing low-Ti high-C ferrochronium by following approach:
Get ferrochrome: Cr
2O
3〉=40%, Cr/Fe 〉=1.8, (MgO+CaO) Al
2O
3=1-1.6, Ti≤0.1%, granularity 40mm;
Coke: fixed carbon 〉=82%, ash content≤15%, P≤0.025%, Ti≤0.15%, granularity 6-18mm;
Silica: SiO
2〉=97%, Al
2O
3≤ 1.5%, washing inclusion-free, granularity 20-40mm;
Above-mentioned raw materials mixed to put in the stove smelts, in the stove temperature between 1600-1800 ℃, control slag ternary slag type MgO32-38% in smelting process, SiO
228-32%, Al
2O
322-27% in time replenishes furnace charge in smelting process, especially at regularly additional coke in iron notch zone and magnesian, smelt the low-Ti high-C ferrochronium of Ti≤0.03%.
The present invention contains Ti≤0.03%, satisfied requirement,, made the wear resistance of special steel of Additive Production and intensity with the present invention and all be met and be by on probation to this class feature kind, market outlook are good, and the quality that makes China's special rolling-mill section is obtained big breakthrough.
Embodiment
As shown in Figure 1, a kind of process for producing low-Ti high-C ferrochronium:
Ferrochrome: Cr
2O
3〉=40%, Cr/Fe 〉=1.8, (MgO+CaO) Al
2O
3=1-1.6, Ti≤0.10% granularity 40mm;
Coke: fixed carbon 〉=82%, ash content≤15%, P≤0.025%, Ti≤0.15%, granularity 6-18mm;
Silica: SiO
2〉=97%, Al
2O
3≤ 1.5%, washing inclusion-free, granularity 20-40mm;
Above-mentioned raw materials mixed to put in the stove smelts, in the stove temperature between 1600-1800 ℃, control slag ternary slag type MgO32-38% in smelting process, SiO
228-32%, Al
2O
322-27% in time replenishes furnace charge in smelting process, especially at regularly additional coke in iron notch zone and magnesian, smelt the low-Ti high-C ferrochronium of Ti≤0.03%.
Claims (1)
1, a kind of process for producing low-Ti high-C ferrochronium is characterized in that:
Ferrochrome: Cr
2O
3〉=40%, Cr/Fe 〉=1.8, (MgO+CaO) Al
2O
3=1-1.6, Ti≤0.1%, granularity 40mm;
Coke: fixed carbon 〉=82%, ash content≤15%, P≤0.025%, Ti≤0.15%, granularity 6-18mm;
Silica: SiO
2〉=97%, Al
2O
3≤ 1.5%, washing inclusion-free, granularity 20-40mm;
Above-mentioned raw materials mixed to put in the stove smelts, in the stove temperature between 1600-1800 ℃, control slag ternary slag type MgO32-38% in smelting process, SiO
228-32%, Al
2O
322-27% in time replenishes furnace charge in smelting process, at regularly additional coke in iron notch zone and magnesian, smelt the low-Ti high-C ferrochronium of Ti≤0.03%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011315385A CN1172010C (en) | 2001-11-15 | 2001-11-15 | process for producing low-Ti High-C ferrochronium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011315385A CN1172010C (en) | 2001-11-15 | 2001-11-15 | process for producing low-Ti High-C ferrochronium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1360068A CN1360068A (en) | 2002-07-24 |
| CN1172010C true CN1172010C (en) | 2004-10-20 |
Family
ID=4670666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011315385A Expired - Lifetime CN1172010C (en) | 2001-11-15 | 2001-11-15 | process for producing low-Ti High-C ferrochronium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1172010C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5364091B2 (en) * | 2007-05-24 | 2013-12-11 | タータ スチール リミテッド | Method for producing a chromium metal block from chromite or concentrate |
| CN101962714B (en) * | 2010-10-25 | 2012-01-25 | 中钢集团吉林铁合金股份有限公司 | Production method of low-silicon low-titanium and high-carbon ferrochrome smelted by submerged arc furnace |
| CN108977678B (en) * | 2018-08-09 | 2019-06-28 | 徐州宏阳新材料科技有限公司 | A kind of low-Ti high-C ferrochronium and its smelting process |
| CN114855002B (en) * | 2021-07-06 | 2023-04-25 | 丰镇市华兴化工有限公司 | Low-titanium high-carbon ferrochrome and production method thereof |
-
2001
- 2001-11-15 CN CNB011315385A patent/CN1172010C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1360068A (en) | 2002-07-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUKUANG(HUNAN)FERRUM ALLOY CO., LTD. Free format text: FORMER OWNER: HUNAN FERROALLOY GROUP CO., LTD. Effective date: 20080620 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080620 Address after: Xin Xiang West Road, Xiangxiang, Hunan Patentee after: Minmetals (Hunan) Ferroalloy Co., Ltd. Address before: Xiangxiang city of Hunan Province Patentee before: Hunan Uron Alloy Group Co., Ltd |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170407 Address after: 013350 the Inner Mongolia Autonomous Region Wulanchabu Changshun County Town Industrial Park Patentee after: Minmetals iron (Inner Mongolia) Ferroalloy Co., Ltd. Address before: 411400 new West Road, Xiangxiang, Hunan Patentee before: Minmetals (Hunan) Ferroalloys Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20041020 |
|
| CX01 | Expiry of patent term |