专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS5589409A TREATING METHOD OF WASTE SLAG 失效
公开(公告)号：JPS5589409A
公开(公告)日：1980-07-07
申请号：JP16011778
申请日：1978-12-27
申请人： TOKUYAMA SODA KK , SUMITOMO METAL IND
发明人： YAMADA KAZUNARI , IBA MASAHISA , MARUKAWA YUUJIYOU , OKAMOTO SETSUO
IPC分类号： C01D7/00 , C21C1/02
摘要： PURPOSE:To recover alkali metal carbonate by a simple process through a method wherein waste slag is treated by hot water while carbon dioxide is blown into waste slag obtained after molten iron is desulfurized and dephosphorized to prepare alkali metal carbonate extract solution. CONSTITUTION:While carbon dioxide is blown into waste slag generated by desulfurizing and dephosphorizing treatment of molten iron, hot water treatment is carried out at the same time and a blowing amount of carbon dioxide is regulated so as to adjust a pH of an extract solution within a range of 9.5-11.5. Thereby, an elluted amount of sulfur component within waste slag is controlled to a small amount as well as the ellution of silicate component is also controlled and unreacted alkali within waste slag is extracted as carbonate salt. The obtained extract solution contains sodium carbonate, phosphate and a small amount of sulfur component. From this extracted solution, sodium carbonate is recovered by a recovering and concentrating process or the like of sulfur and phosphorus component and is reused in a desulfurizing process or the like.

2. 发明专利

JPS5534685A RECOVERING METHOD FOR LUPPE FROM WASTE SLAG 失效
公开(公告)号：JPS5534685A
公开(公告)日：1980-03-11
申请号：JP10816878
申请日：1978-09-05
申请人： TOKUYAMA SODA KK , SUMITOMO METAL IND
发明人： MARUKAWA YUUJIYOU , ANEZAKI MASAHARU , OKAMOTO SETSUO , YAMADA KAZUNARI
IPC分类号： C22B1/00 , B09B3/00 , C21C1/02
摘要： PURPOSE:To thoroughly recover iron component in waste slag as high purity iron by crushing the slag; treating the crushed slag with hot water and CO2 to extract alkali at pH 9-11.5; and magnetically separating the residue. CONSTITUTION:Waste slag discharged from an iron mill is passed through a mixing process, crushed to below 15mm in a crushing process, and screened. The minus mesh is fed to hopper 4 of an alkali extracting process through conveyor 3 and treated with hot water of 80-100 deg.C countercurrently suplied to extract alkali while it reaches discharge conveyor 8 through extractors 1, 2. At this time, CO2 is blown into extractors 1, 2 to recover the alkali as alkali carbonate at pH 9-11.5. The extraction residue is fed to a luppe recovering process, where luppe is magnetically separated with a magnetic separator, classified, and recovered. The luppe is high purity high hardness iron and is effectively used in sintering, a converter, etc.

3. 发明专利

JPS54100999A TREATMENT OF WASTE SLAG 失效
公开(公告)号：JPS54100999A
公开(公告)日：1979-08-09
申请号：JP770778
申请日：1978-01-26
申请人： TOKUYAMA SODA KK , SUMITOMO METAL IND
发明人： YAMADA KAZUNARI , IBA MASAHISA , MARUKAWA YUUJIYOU , OKAMOTO SETSUO
IPC分类号： C01D7/00 , C01D7/26 , C22B1/00 , C22B7/04
摘要： PURPOSE:To recover high purity alkali carbonate which is reusable from filtrate by the procedure in which waste slag produced when molten pig iron is desulfurized or dephosphorated by an alkali carbonate is extracted with hot water while blowing CO2 into the apparatus, and then the extracted solution is mixed with iron ion and sediment is filtered. CONSTITUTION:The molten pig iron obtained at the blast furnace 1 is sent to the desulfurization and dephosphoration process 2 to cause reaction with Na2CO3 added in a fixed amount, whereby S is converted into Na2S and P is converted into sodium phosphate. And, the pig iron thus treated is sent to the converter 6 and mixed with CaO, etc. for refining, and then sent to the casting process 7. On the other hand, the waste slag formed in the process 2 is sent to the extraction and washing process 3, where extraction and washing are made with hot water while injecting CO2-containing gas to crystallize most of S ion in the form of iron sulfide. And, the extracted solution is sent to the sedimentation tank 4 and mixed with iron ion to precipitate iron sulfide and iron phosphate and removed them. Then, the filtrate is concentrated and then sent to the fractional crystallization process 5 to separate NaCO3 sediment for removal and recovery.

4. 发明专利

JPS54100918A DESULFURIZING AGENT 失效
公开(公告)号：JPS54100918A
公开(公告)日：1979-08-09
申请号：JP770878
申请日：1978-01-26
申请人： TOKUYAMA SODA KK , SUMITOMO METAL IND
发明人： YAMADA KAZUNARI , IBA MASAHISA , MARUKAWA YUUJIYOU , OKAMOTO SETSUO
IPC分类号： C21C1/02
摘要： PURPOSE:As a molten iron desulfurizing agent to be used outside furnace, a mixture of soda ash and coke powder is prepared, the mixture being used in reducing desulfurizer atmosphere to enhance desulfurizing effect, and in oxygen blow smelting process to prevent oxidized consuption of Si heat source material. CONSTITUTION:Molten iron is desulfurized outside furnace using pouring ladel, etc., prior to oxygen blow smelting of iron to steel. In this process, as a desulfurizing agent, soda ash is used with coke powder, which is mixed into the soda ash in an amount such that the ratio of Na2CO3 in the ash to C in the coke should be 1/3 to 3. This mixture is blended with 5% of kerosine to be molded into pellet form of 10 to 50 mm diameter. When these pellets are used as desulfurizing agent, coke and Na2CO3 react to produce CO gas which is a reducing atmosphere to enhance desulfurizing efficiency. In addition, Si oxidation in molten iron is prevented to the effect that in steel converter oxygen blow smelting, Si heat source consumption is minimized.

5. 发明专利

JPS61217514A PRODUCTION OF PRELIMINARY DEPHOSPHORIZING AGENT 失效
公开(公告)号：JPS61217514A
公开(公告)日：1986-09-27
申请号：JP6032785
申请日：1985-03-25
申请人： SUMITOMO METAL IND
发明人： YOSHIDA SHUJI , TATENO MASAKI , OKAMOTO SETSUO , MATSUO SHIGEYOSHI , KAWAYOSHI YATSUHIRO
IPC分类号： C21C1/02
摘要： PURPOSE:To produce a granular preliminary dephosphorizing agent easily and inexpensively by sucking and removing the molten slag of soda ash refining by an ejector and adding soda ash-contg. powder to the slag in the mid-way of suction. CONSTITUTION:The aperture at the bottom end of a suction pipe 3 of an ejector type slag sucking and discharging device 1 which ejects a high-pressure gas such as air from a high-pressure gas ejection pipe 4 into a discharge pipe 2 consisting of a pipe closed at one end and branched with the pipe 3 is brought near to the molten slag 7 generated by molten iron refining by the soda ash refining agent to suck the slag. The sucked slag is removed through a suction area 8. The soda ash-contg. collected dust 6 from a powder adding pipe 5 is ejected and added to the sucked slag 7 by using a carrier gas. The solidification of the slag 7 liquid drops is thereby accelerated to prevent clogging. The granular dephosphorizing agent 12 having adequate components are efficiently formed and are recovered into a recovering boxy 11 provided with an air filter 13 and an exhauster 14 through a lead-out pipe 10 from a scattering area 9.

6. 发明专利

JPS61189848A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPS61189848A
公开(公告)日：1986-08-23
申请号：JP2792985
申请日：1985-02-15
申请人： SUMITOMO METAL IND
发明人： OKAMOTO SETSUO , YOSHIDA SHUJI , MATSUO SHIGEYOSHI , TATENO MASAKI , MORI TOSHIHIRO
IPC分类号： B22D11/10 , B22D11/11 , B22D43/00
摘要： PURPOSE:To draw out completely a residual molten steel in a tundish, at the time of finishing the pouring of a molten steel, by removing slag by sucking it at the time of finishing the pouring, in pouring the molten steel into a mold from a ladle through the tundish. CONSTITUTION:A molten steel S is charged into a tundish 1 from a ladle 2 through a ladle nozzle 3 and a long nozzle 4, and is poured into molds 6 from tundish nozzles 5. Here, the surface of molten steel S is a range of the molten steel S poured from the nozzle 3, is partitioned by an upper weir 7 sagged from the upper part in the tundish 1, to prevent the dispersion of slag Sl, contained in the poured molten steel. Then, when the charging of molten steel from the ladle 2 to the tundish 1 is finished, immediately before or after the finish of charging; the pouring of molten steel from the tundish 1 into the molds 6, is continued while removing the slag especially from the inside of weir 7 by a suction-type slag remover 8. And when the surface of residual molten steel in the tundish 1 descends lower than the weir 7, the pouring is continued till the residual molten steel is drawn out completely while removing th slag from the whole surface of molten metal, before withdrawing the empty tundish 1.

7. 发明专利

JPS61169144A CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPS61169144A
公开(公告)日：1986-07-30
申请号：JP1065985
申请日：1985-01-23
申请人： SUMITOMO METAL IND
发明人： MATSUO SHIGEYOSHI , TATENO MASAKI , YOSHIDA SHUJI , OKAMOTO SETSUO , MORI TOSHIHIRO
IPC分类号： B22D11/10 , B22D11/111 , B22D45/00
摘要： PURPOSE:To improve safely and highly efficiently the terminal part of an ingot and to make possible remote operation by starting the suction and removal of a molten layer consisting of powder, etc. by a dry type suction device right after or just before the end of casting into a mold and cooling the surface of a molten steel by the suction continued thereafter. CONSTITUTION:The suction port 3 of the dry type suction device 2 is disposed to a suitable position H above a molten metal surface S right after or just before the end of casting into the mold 1. The air G2 on the surface S is then sucked by the gas G1 ejected from an ejection port 4 by which the molten layer 7 consisting of the powder, etc. on the surface S is sucked together and is discharged G3 from a discharge pipe 6. The suction is continued thereafter until the ingot leaves the mold 1 to cool and solidify the surface S of the molten metal. The terminal of the ingot is improved without the need for charging of a coolant in the conventional practice. The above-mentioned suction system prevents the sticking of ore slag to the inside surface of the device 2 and contributes to the extension of the equipment life. The weldability of the sucked-up layer 7 is decreased if a basic compd. is blown by air from the midway of the suction pipe 5 into the suction device 2. The clogging and injury of said device are then prevented furthermore.

8. 发明专利

JPS6167543A Casting method of steel 失效
标题翻译：钢的铸造方法
公开(公告)号：JPS6167543A
公开(公告)日：1986-04-07
申请号：JP18891884
申请日：1984-09-11
申请人： Sumitomo Metal Ind Ltd
发明人： SHIDAGAWA SHIGEO , MARUKAWA YUJO , KASAI NOBUFUMI , OKAMOTO SETSUO
IPC分类号： B22D7/00 , B22D11/04 , B22D11/06 , B22D27/04
CPC分类号： B22D7/00 , B22D27/045
摘要： PURPOSE:To decrease internal segregation and shrinkable defects and to cast a steel having good internal quality by insulating the heat of the top surface of a molten steel having a specific depth or below and allowing the mooten steel to solidify positively from the bottom surface so as to execute substantially unidirectional solidification from the bottom surface toward the top surface. CONSTITUTION:The molten steel 4 poured into a casting mold 3 lined internally with the heat insulating material 2 on an ingot mold stool 1 is cooled only from the top surface and bottom surface or from the bottom surface and is allowed to solidify positively from the bottom surface of the steel 4 in a vertically short steel ingot method consisting in pouring the molten steel 4 into the above-mentioned casting mold so as to form an ingot having
摘要翻译：目的：为了减少内部偏析和收缩缺陷，并通过将具有特定深度或更低深度的钢水顶表面的热量绝热来铸造具有良好内部质量的钢，并允许成型钢从底面积极固化，以便从底面朝向上表面进行基本上单向的凝固。构成：将浇注在铸型3中的铸钢3内的绝热材料2浇铸在锭模凳1上仅从顶表面和底表面或从底表面冷却，并从底部积极固化钢4的表面以垂直短钢锭方法，包括将钢水4浇注到上述铸模中，以形成厚度<= 400mm的铸块。在从上表面的凝固钢形成为<30mm厚度之后，首先形成的固化层5由隔热材料6绝缘。因此，从底部到顶面的基本上单向凝固以这样的方式执行：最终凝固的部分7与层5相邻存在。因此改善了内部质量，并且消除了在铸造之后对钢材的表面层部分进行研磨的需要。因此，铸锭容易以高产量铸造。

9. 发明专利

JPS5934205B2 JPS5934205B2 - 失效
公开(公告)号：JPS5934205B2
公开(公告)日：1984-08-21
申请号：JP10206678
申请日：1978-08-21
申请人： Sumitomo Metal Ind
发明人： YAMAZAKI ISAO , NOSHITA KOHEI , OKAMOTO SETSUO
IPC分类号： C21C7/00 , C21C5/28 , C21C7/04

10. 发明专利

JPS5934204B2 JPS5934204B2 - 失效
公开(公告)号：JPS5934204B2
公开(公告)日：1984-08-21
申请号：JP4807178
申请日：1978-04-21
申请人： Sumitomo Metal Ind
发明人： MARUKAWA JUJO , HASHIKUMADA HIRONAGA , YAMAZAKI ISAO , OKAMOTO SETSUO
IPC分类号： C21C7/00 , C21C5/32
CPC分类号： C21C5/32

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式