CN101473050A - Pressure control in direct smelting process - Google Patents
Pressure control in direct smelting process Download PDFInfo
- Publication number
- CN101473050A CN101473050A CNA2007800226472A CN200780022647A CN101473050A CN 101473050 A CN101473050 A CN 101473050A CN A2007800226472 A CNA2007800226472 A CN A2007800226472A CN 200780022647 A CN200780022647 A CN 200780022647A CN 101473050 A CN101473050 A CN 101473050A
- Authority
- CN
- China
- Prior art keywords
- tail gas
- state
- technology
- direct melting
- container
- 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
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 title claims abstract description 33
- 238000003723 Smelting Methods 0.000 title abstract 4
- 239000002184 metal Substances 0.000 claims abstract description 89
- 229910052751 metal Inorganic materials 0.000 claims abstract description 89
- 239000000463 material Substances 0.000 claims abstract description 83
- 239000002893 slag Substances 0.000 claims abstract description 26
- 239000007789 gas Substances 0.000 claims description 245
- 238000005516 engineering process Methods 0.000 claims description 131
- 238000002844 melting Methods 0.000 claims description 127
- 230000008018 melting Effects 0.000 claims description 127
- 238000012423 maintenance Methods 0.000 claims description 51
- 239000002737 fuel gas Substances 0.000 claims description 50
- 238000004519 manufacturing process Methods 0.000 claims description 43
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 33
- 229910052760 oxygen Inorganic materials 0.000 claims description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 28
- 239000001301 oxygen Substances 0.000 claims description 28
- 239000007787 solid Substances 0.000 claims description 18
- 235000009508 confectionery Nutrition 0.000 claims description 17
- 239000003345 natural gas Substances 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000011084 recovery Methods 0.000 claims description 12
- 239000002918 waste heat Substances 0.000 claims description 12
- 238000002203 pretreatment Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 10
- 230000004907 flux Effects 0.000 claims description 7
- 239000011859 microparticle Substances 0.000 claims description 7
- 238000005243 fluidization Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 40
- 238000005406 washing Methods 0.000 description 31
- 229910052742 iron Inorganic materials 0.000 description 20
- 239000007921 spray Substances 0.000 description 17
- 239000003245 coal Substances 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 14
- 238000002485 combustion reaction Methods 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000002829 reductive effect Effects 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000010412 perfusion Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 239000012159 carrier gas Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 241000894007 species Species 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000282887 Suidae Species 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 108091081062 Repeated sequence (DNA) Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000012256 powdered iron Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000035900 sweating Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
- C21B13/0013—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state introduction of iron oxide into a bath of molten iron containing a carbon reductant
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0073—Selection or treatment of the reducing gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
- C21B13/143—Injection of partially reduced ore into a molten bath
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/56—Manufacture of steel by other methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
- F27B3/22—Arrangements of air or gas supply devices
- F27B3/225—Oxygen blowing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
- F27B3/26—Arrangements of heat-exchange apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D19/00—Arrangements of controlling devices
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
- C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
- C21B2100/64—Controlling the physical properties of the gas, e.g. pressure or temperature
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
- C21B2100/66—Heat exchange
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C2100/00—Exhaust gas
- C21C2100/02—Treatment of the exhaust gas
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C2100/00—Exhaust gas
- C21C2100/06—Energy from waste gas used in other processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Description
Claims (22)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2006902130A AU2006902130A0 (en) | 2006-04-24 | Off-gas processing in direct smelting process | |
AU2006902130 | 2006-04-24 | ||
PCT/AU2007/000542 WO2007121536A1 (en) | 2006-04-24 | 2007-04-24 | Pressure control in direct smelting process |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2012105261352A Division CN103060503A (en) | 2006-04-24 | 2007-04-24 | Pressure control in direct smelting process |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101473050A true CN101473050A (en) | 2009-07-01 |
CN101473050B CN101473050B (en) | 2013-07-03 |
Family
ID=38624477
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2012105261352A Pending CN103060503A (en) | 2006-04-24 | 2007-04-24 | Pressure control in direct smelting process |
CN2007800226472A Active CN101473050B (en) | 2006-04-24 | 2007-04-24 | Pressure control in direct smelting process |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2012105261352A Pending CN103060503A (en) | 2006-04-24 | 2007-04-24 | Pressure control in direct smelting process |
Country Status (3)
Country | Link |
---|---|
US (1) | US20100011908A1 (en) |
CN (2) | CN103060503A (en) |
WO (1) | WO2007121536A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103108967A (en) * | 2010-09-15 | 2013-05-15 | 技术资源有限公司 | Direct smelting process |
CN103409576A (en) * | 2013-08-14 | 2013-11-27 | 北京首钢国际工程技术有限公司 | Energy recovery and dry dedusting process for gas from direct melting furnace |
CN103468847A (en) * | 2013-08-14 | 2013-12-25 | 北京首钢国际工程技术有限公司 | Iron bath method high temperature gas waste heat and waste energy utilization and dry method dedusting technology |
CN104870656A (en) * | 2012-11-12 | 2015-08-26 | 技术资源有限公司 | A two-stage smelting process and apparatus |
WO2017014699A1 (en) * | 2015-07-23 | 2017-01-26 | Limastian Narong | Method of utilizing furnace off-gas for reduction of iron oxide pellets |
CN107532223A (en) * | 2015-02-03 | 2018-01-02 | 技术资源有限公司 | The processing of low calorific value waste gas |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
UA113295C2 (en) | 2011-12-06 | 2017-01-10 | Текнолоджікал Рісорсес Пті. Лімітед | Starting a smelting process |
UA113296C2 (en) * | 2011-12-06 | 2017-01-10 | Текнолоджікал Рісорсес Пті. Лімітед | Starting a smelting process |
JP5818704B2 (en) * | 2012-01-25 | 2015-11-18 | 三菱日立パワーシステムズ株式会社 | Gasification furnace, gasification power plant |
US20240279757A1 (en) * | 2023-02-21 | 2024-08-22 | Nucor Corporation | Direct bath smelting process with fast quench of molten material in hot offgas |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2715536C2 (en) * | 1977-04-07 | 1982-07-15 | Bergwerksverband Gmbh | Method and device for recovering waste heat from coke ovens |
SU1013490A1 (en) * | 1981-09-07 | 1983-04-23 | Украинский Государственный Институт По Проектированию Металлургических Заводов | Method for making steel in oxygen converter |
FR2576607B1 (en) * | 1985-01-25 | 1989-10-13 | Montereau Acieries | PROCESS FOR PREHEATING SCRAP AND RIBLONS |
US5258054A (en) * | 1991-11-06 | 1993-11-02 | Ebenfelt Li W | Method for continuously producing steel or semi-steel |
JPH0743081A (en) * | 1993-07-30 | 1995-02-10 | Sumitomo Metal Mining Co Ltd | Control method of internal pressure of self-fluxing furnace |
AUPP483898A0 (en) * | 1998-07-24 | 1998-08-13 | Technological Resources Pty Limited | A direct smelting process & apparatus |
AUPQ083599A0 (en) * | 1999-06-08 | 1999-07-01 | Technological Resources Pty Limited | Direct smelting vessel |
AUPQ152299A0 (en) * | 1999-07-09 | 1999-08-05 | Technological Resources Pty Limited | Start-up procedure for direct smelting process |
AUPQ205799A0 (en) * | 1999-08-05 | 1999-08-26 | Technological Resources Pty Limited | A direct smelting process |
AUPQ213099A0 (en) * | 1999-08-10 | 1999-09-02 | Technological Resources Pty Limited | Pressure control |
AUPQ346399A0 (en) * | 1999-10-15 | 1999-11-11 | Technological Resources Pty Limited | Stable idle procedure |
US6602321B2 (en) * | 2000-09-26 | 2003-08-05 | Technological Resources Pty. Ltd. | Direct smelting process |
US6519942B2 (en) * | 2001-01-23 | 2003-02-18 | Reginald Wintrell | Systems and methods for harvesting energy from direct iron-making off gases |
WO2005083130A1 (en) * | 2004-02-27 | 2005-09-09 | Technological Resources Pty. Limited | Direct smelting plant and process |
-
2007
- 2007-04-24 US US12/298,349 patent/US20100011908A1/en not_active Abandoned
- 2007-04-24 CN CN2012105261352A patent/CN103060503A/en active Pending
- 2007-04-24 CN CN2007800226472A patent/CN101473050B/en active Active
- 2007-04-24 WO PCT/AU2007/000542 patent/WO2007121536A1/en active Application Filing
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103108967A (en) * | 2010-09-15 | 2013-05-15 | 技术资源有限公司 | Direct smelting process |
CN103108967B (en) * | 2010-09-15 | 2015-06-17 | 技术资源有限公司 | Direct smelting process |
CN104870656A (en) * | 2012-11-12 | 2015-08-26 | 技术资源有限公司 | A two-stage smelting process and apparatus |
CN103409576A (en) * | 2013-08-14 | 2013-11-27 | 北京首钢国际工程技术有限公司 | Energy recovery and dry dedusting process for gas from direct melting furnace |
CN103468847A (en) * | 2013-08-14 | 2013-12-25 | 北京首钢国际工程技术有限公司 | Iron bath method high temperature gas waste heat and waste energy utilization and dry method dedusting technology |
CN103468847B (en) * | 2013-08-14 | 2015-04-15 | 北京首钢国际工程技术有限公司 | Iron bath method high temperature gas waste heat and waste energy utilization and dry method dedusting technology |
CN103409576B (en) * | 2013-08-14 | 2015-10-14 | 北京首钢国际工程技术有限公司 | A kind of direct smelting furnace gas energy reclaims and dry dedusting technology |
CN107532223A (en) * | 2015-02-03 | 2018-01-02 | 技术资源有限公司 | The processing of low calorific value waste gas |
WO2017014699A1 (en) * | 2015-07-23 | 2017-01-26 | Limastian Narong | Method of utilizing furnace off-gas for reduction of iron oxide pellets |
Also Published As
Publication number | Publication date |
---|---|
CN103060503A (en) | 2013-04-24 |
US20100011908A1 (en) | 2010-01-21 |
WO2007121536A1 (en) | 2007-11-01 |
CN101473050B (en) | 2013-07-03 |
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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 | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20180928 Address after: No. 999 Wensheng street, Shouguang, Shandong Patentee after: SHANDONG MOLONG PETROLEUM MACHINERY Co.,Ltd. Address before: Australia Melbourne Patentee before: TECHNOLOGICAL RESOURCES Pty Ltd. |
|
EE01 | Entry into force of recordation of patent licensing contract | ||
EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20090701 Assignee: Hebei Xinggang Technology Co.,Ltd. Assignor: SHANDONG MOLONG PETROLEUM MACHINERY Co.,Ltd. Contract record no.: X2023980034949 Denomination of invention: Pressure Control in Direct Melting Process Granted publication date: 20130703 License type: Common License Record date: 20230423 |
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TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20240724 Address after: 262700 Southwest corner of the intersection of Shenghai East Road and Xingang Road, Yangkou Town, Shouguang City, Weifang City, Shandong Province Patentee after: Shouguang Maolong New Material Technology Development Co.,Ltd. Country or region after: China Address before: No. 999 Wensheng Street, Shouguang City, Shandong Province, China 262700 Patentee before: SHANDONG MOLONG PETROLEUM MACHINERY Co.,Ltd. Country or region before: China |