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1. 发明专利

JPS6119727A Treatment of exhaust gas from vacuum degassing installation 失效
标题翻译：从真空脱盐装置处理排气
公开(公告)号：JPS6119727A
公开(公告)日：1986-01-28
申请号：JP13862684
申请日：1984-07-04
申请人： Sumitomo Metal Ind Ltd
发明人： TAKAHASHI TSUTOMU , MARUKAWA YUUJIYOU
IPC分类号： B22D11/10 , B22D11/106 , B22D11/112 , B22D11/113 , B22D11/116 , C21C7/10 , F27D17/00
CPC分类号： C21C7/10 , Y02P10/122
摘要： PURPOSE:To synthetically reduce steel manufacturing cost, by separating the exhaust gaseous mixture of Ar and CO2 recovered from a vacuum degassing apparatus into Ar and CO2 and respectively using Ar and CO2 in a continuous casting tundish and the vacuum degassing apparatus. CONSTITUTION:The molten steel 4 in a ladle 3 decarburized under vacuum in a vacuum tank 1 having a sucking-up pipe 2-1 and a discharge pipe 2-2 and recirculated to the ladle 3 to perform vacuum decarburization refining. In this case, the gaseous mixture consisting of the Ar-gas used in the sucking-up pipe 2-1 and decarburized CO2-gas by O2 from an oxygen blow pipe 7 is supplied to a condenser 10 to remove air therein and introduced into an Ar separation apparatus 19 to be separated into Ar and CO2. The Ar-gas 35 is used in the tundish of a continuous casting apparatus through a gas holder 21. The separated CO2-gas 26 is recirculated to the vacuum degassing apparatus through a CO2-gas holder 24 and used as the seal gas of the top part and exhaust port part of the vacuum tank 1 and an alloy adding apparatus 6.
摘要翻译：目的：为了综合降低钢铁制造成本，将从真空脱气装置回收的Ar和二氧化碳的废气混合物分离成Ar和CO2，并分别在连续铸造中间包和真空脱气装置中分别使用Ar和CO2。构成：在具有吸引管2-1和排出管2-2的真空槽1中真空脱碳的钢水包3中的钢水4，再循环到钢包3进行真空脱碳精炼。在这种情况下，将由吸入管2-1中使用的Ar气体和来自氧气吹送管7的O2的脱碳的CO 2气体组成的气体混合物供给到冷凝器10，以将其中的空气导入到 Ar分离装置19分离成Ar和CO 2。 Ar气体35通过气体保持器21用于连续铸造设备的中间包中。分离的CO 2气体26通过CO 2气体保持器24再循环到真空脱气装置中并用作顶部的密封气体真空槽1的一部分和排气口部分以及合金添加装置6。

2. 发明专利

JPS619513A Treatment of waste gas from vacuum degassing equipment 失效
标题翻译：从真空脱水设备处理废气
公开(公告)号：JPS619513A
公开(公告)日：1986-01-17
申请号：JP12952584
申请日：1984-06-22
申请人： Kyodo Sanso Kk , Sumitomo Metal Ind Ltd
发明人： TAKAHASHI TSUTOMU , MARUKAWA YUUJIYOU , DEN TAKAHIRO
IPC分类号： C21C7/10 , F27D17/00
CPC分类号： C21C7/10
摘要： PURPOSE:To recover Ar in high purity and at low cost and to reduce the cost of molten steel treatment by using water freed of dissolved air as the water for cooling a condenser of an evacuation apparatus wherein Ar is separated and recovered from the waste gas of the vacuum degasing equipment, and circulated and reused. CONSTITUTION:An inert gas 5' such as Ar is blown into suction pipe 2-1 at the lower part of a vacuum vessel 1, and molten steel 4 in a ladle 3 is successively sucked and continuously degasified. In this case, the inside of the vessel 1 is kept at 1-100mm.Hg, and the recovery of Ar is improved by reducing the N2 content in the waste gas from the vacuum degasing equipment. Namely, water freed of dissolved air in an evacuation apparatus is used as the water for cooling the condenser of the evacuation apparatus in order to reduce the N2 content in the waste gas. Besides, the waste gas condensed with the dissolved air-free water is stored temporarily in a storage tank, and then Ar is separated in an AR separator. The recovered Ar is circulated and reused as the gas for circulating molten steel, cooling the O2 lance, and sealing.
摘要翻译：目的：以高纯度和低成本回收Ar，并通过使用除去溶解空气的水来降低钢水处理成本，作为用于冷却排气装置的冷凝器的水，其中Ar从废气中分离回收真空脱气设备，循环利用。构成：将惰性气体5'如“Ar”在真空容器1的下部吹入吸入管2-1中，钢包3中的钢水4被连续地吸入并连续脱气。在这种情况下，容器1的内部保持在1-100mm.Hg，并且通过减少来自真空脱气设备的废气中的N 2含量来提高Ar的回收率。也就是说，为了减少废气中的N 2含量，使用在排气装置中排出溶解空气的水作为用于冷却排气装置的冷凝器的水。此外，与溶解的无空气水一起冷凝的废气临时储存在储罐中，然后在AR分离器中分离Ar。回收的Ar循环和再利用作为用于循环钢水的气体，冷却O2喷枪和密封。

3. 发明专利

JPS60128230A PRODUCTION OF VANADIUM 失效
公开(公告)号：JPS60128230A
公开(公告)日：1985-07-09
申请号：JP23360383
申请日：1983-12-13
申请人： SUMITOMO METAL IND
发明人： MARUKAWA YUUJIYOU , EBIHARA KOUJI
IPC分类号： C22B34/22
摘要： PURPOSE:To recover vanadium in the form of a mixture composed of metallic vanadium and vanadium carbide at a high yield by maintaining the mixture composed of vanadium oxide and carbon at a high temp. under a vacuum condition. CONSTITUTION:Carbon, for example, graphite powder is mixed with V2O5 which is obtd. by thermal decomposition of, for example, ammonium (meta)vanadate and is generally powder. The material in this stage is preferably of about 30 mesh of finer than said size and the C/V2O5 ratio is preferably about 0.1-5.0. The mixture is made to compact powder and is molded to a briquette, etc. to permit easy putting of said mixture into and out of a hermetic vessel for performing a reduction stage. Such molding is transferred into the hermetic vessel and is held at a high temp. of about >=1,000 deg.C under the vacuum of about =1,000 deg.C for specified time under a vacuum according to need, the product is decarburized.

4. 发明专利

JPS5839716A TREATMENT OF MOLTEN IRON 失效
公开(公告)号：JPS5839716A
公开(公告)日：1983-03-08
申请号：JP13740081
申请日：1981-08-31
申请人： SUMITOMO METAL IND
发明人： UEKI HIROMITSU , MARUKAWA YUUJIYOU , MIYAKI KENSUKE
IPC分类号： C21C5/28 , C21C1/02 , C21C1/04 , C21C5/32
摘要： PURPOSE:To treat molten iron with assurance of a high yield of Mn by dephosphorizing the molten iron which is obtained by desiliconizing molten iron with Mn ore, etc. and is enriched of Mn by suppressing the decrease in the content of Mn with soda ashes then subjecting the molten iron to converter refining at the amt. of the slag smaller than prescribed ratios. CONSTITUTION:After the blast furnace slag HS in the molten iron HM of a blast furnace tapped from the blast furnace into a tapping spout 1 is discharged through a slag discharging port 1d, the iron HM is discharged 1b into an inclined spout 2. Mn content such as Mn ore is supplied as a desiliconizing agent 3 into the iron HM in the spout 2 and the desiliconization is progressed by the flowing energy of the iron HM and the agitation during dropping and charging thereof from the downstream side of the spout 2 into a mixer car 4 below the same, whereby the molten iron is separated to desiliconized molten iron TM and desiliconized slag TS by a difference in specific gravity in the car 4. After the slag TS in the car 4 is discharged to allow only the iron TM to remain therein upon completion of the desiliconization treatment, a carrier gas mixed with soda ashes is fed into the iron TM through a lance 5 inserted therein, and the resulted desiliconized and dephosphorized iron LM is charged into a molten iron charging pan 6, the iron is further subjected to converter refining at

5. 发明专利

JPS57111242A RECOVERY OF PHOSPHORUS AND VANADIUM 失效
公开(公告)号：JPS57111242A
公开(公告)日：1982-07-10
申请号：JP18833580
申请日：1980-12-29
申请人： SUMITOMO METAL IND , TANAKA KOGYO
发明人： HASHIMOTO TAKAO , MARUKAWA YUUJIYOU , TSUTSUMI MASAKATSU , HIDAKA CHIKARA
IPC分类号： C22B34/22 , C01D7/00 , C01G31/00
摘要： PURPOSE:Dephosphorized slag is treated with water and carbon dioxide, the solid is separated from the liquid, the pH of the resultant liquid is adjusted to a specific value, then an organic substance is added thereto to recover vanadium effectively. CONSTITUTION:Water and carbon dioxide are added to dephosphorized slag, which is formed, when a slagging agent mainly consisting of an alkali metal carbonate such as sodium carbonate is added to molten iron or molten steel, and the solid is the mixture is separated from the liquid to remove SiO2, Fe and other substances. The pH of the extract containing eluted alkali metal compounds of vanadium is adjusted to 8.0-11.0 with, e.g., aqueous ammonia and an organic substance such as an amine or phosphate salt is added by about 2-10 volumes per 10 volumes of the extract to divide the mixture into the organic layer and the inorganic layer. The organic layer containing vanadium is adjusted in pH to higher 12 or lower than 2 to collect vanadium compounds. The compounds are further reduced to produce pure vanadium.

6. 发明专利

JPS57111215A RECOVERING METHOD OF VALUABLE COMPONENT FROM METALURGICAL SLAG 失效
公开(公告)号：JPS57111215A
公开(公告)日：1982-07-10
申请号：JP18833680
申请日：1980-12-29
申请人： SUMITOMO METAL IND , TANAKA KOGYO
发明人： HASHIMOTO TAKAO , MARUKAWA YUUJIYOU , TSUTSUMI MASAKATSU , HIDAKA CHIKARA
IPC分类号： C22B26/20 , C01B25/26 , C01B25/32 , C01B25/36 , C01D7/00 , C01G31/00 , C22B7/04 , C22B26/10 , C22B34/22
摘要： PURPOSE:To separate and recover Na, P and V as the forms of the compounds thereof, by treating a desulfurized and dephosphorized slag, e.g. a molten iron prepared with Na2CO3, etc. with water and CO2, and treating the resultant treated slag with Al or Ca ions and NH4 ions, etc. CONSTITUTION:A slag generated by desulfurizing and dephosphorizing a molten iron or steel with Na2CO3 is wet pulverized to form a slurry, elute and filter off the Na content or Na salts of P and V. The resultant solid material is then treated with water and CO2, and the treated solution is added to the filtrate. CO2 is then blown into the mixture solution to convert the Na content into Na2CO3, and further iron sulfide is then added thereto to precipitate and separate and the S content as FeS. Al2(SO4)3 or CaO is added to precipitate and separate the P content as AlPO4 or Ca3(PO4)2. The residue is then evaporated and concentrated to crystallize and recover the Na2CO3. (NH4)2SO4 is added to the residue to deposit and recover the V content as NH4VO3.

7. 发明专利

JPS5763613A Refining method in converter 失效
标题翻译：转换器中的精炼方法
公开(公告)号：JPS5763613A
公开(公告)日：1982-04-17
申请号：JP13718180
申请日：1980-09-30
申请人： Sumitomo Metal Ind Ltd
发明人： HIROKI NOBUYOSHI , MARUKAWA YUUJIYOU , UEKI HIROMITSU , IKEMIYA HIROYUKI , SHIROTA YOSHIYASU
IPC分类号： C21C5/28 , C21C5/30 , C21C5/32
CPC分类号： C21C5/32
摘要： PURPOSE:To perform the accurate control of the final carbon content and to attain an accurate hit of the tapping temp. by adding a substance which generates heat by the reaction with oxygen to molten steel in a converter at a suitable time when pretreated molten iron is charged into the converter to carry out oxygen blowing. CONSTITUTION:Molten iron subjected to a pretreatment such as dephosphorization is charged into a converter 1, a lance 3 is put in the converter 1 from the uppper opening, and by spraying oxygen on the molten iron, oxygen blowing is carried out. A hopper 4 is supplied with a substance which generates heat by the reaction with oxygen, e.g. a heat compensating additive such as an Fe-Si alloy, metallic Al, coke or coal, and the substance is added to molten steel in the converter 1 at a suitable time after starting the blowing. This additive generates heat by the reaction with oxygen and raises the temp. of the molten steel.
摘要翻译：目的：要精确控制最终的碳含量，并获得精确的攻丝温度。通过在将预处理的铁水装入转炉中以进行吹氧的适当时间，在转炉中加入通过与氧气的反应产生热量的钢液体转化为钢水的物质。构成：将经过预处理如脱磷的熔融铁装入转炉1中，将喷枪3从上游开口放入转炉1中，并通过在铁水上喷氧，进行吹氧。向料斗4供给通过与氧的反应产生热量的物质，例如，诸如Fe-Si合金，金属Al，焦炭或煤的热补偿添加剂，并且在开始吹制之后的合适时间将该物质加入到转炉1中的钢水中。该添加剂通过与氧的反应产生热量，并提高温度。的钢水。

8. 发明专利

JPS5757814A Refining method for converter 失效
标题翻译：转换器精炼方法
公开(公告)号：JPS5757814A
公开(公告)日：1982-04-07
申请号：JP13098380
申请日：1980-09-20
申请人： Sumitomo Metal Ind Ltd
发明人： HIROKI NOBUYOSHI , MARUKAWA YUUJIYOU , UEKI HIROMITSU , IKEMIYA HIROYUKI , SHIROTA YOSHIYASU
IPC分类号： C21C5/28 , C21C5/35
CPC分类号： C21C5/35
摘要： PURPOSE:To make the use of inexpensive ore possible by charging pretreated molten iron into aconverter, and adding materials contg. Mn, Cr or Ni during oxygen blowing without adding any slag making agent thereby controlling the component concn. thereof. CONSTITUTION:The molten iron which is beforehand subjected to desiliconization, dephosphorization, and desulfurization is charged into a composite blowing furnace 1, and a lance 3 is inserted vertically through the upper opening thereof to blow gaseous pure oxygen to the molten metal, whereby oxygen blowing is accomplished. Mn-contg. materials, Cr-contg. materials or Ni-contg. materials which are crushed to lumps are contained in a hopper 4, and a slag making agent such as quick lime is contained in a hopper 6. At the suitable point of time after the start of the oxygen blowing, Mn ore and the like are charged into the furnace 1. The slag making agent is not added or if necessary, a small amt. thereof is added. An inert gas is introduced through a tyere 2 to stir the steel bath. Thereby, the concns. of Mn, Cr, Ni components of the molten iron are controlled by using inexpensive ore.
摘要翻译：目的：为了通过将预处理的铁水装入逆变器来使用廉价的矿石，并添加材料。 Mn，Cr或Ni，而不添加任何造渣剂，从而控制组分浓度。其中。构成：将预先进行脱硅，脱磷，脱硫的铁水装入复合式吹风炉1中，将喷枪3的上部开口垂直地插入，将气态纯氧吹向熔融金属，由此吹入氧气完成了 Mn-contg 材料，Cr-contg。材料或Ni-contg。粉碎成块的材料被包含在料斗4中，并且渣斗6中包含诸如生石灰的造渣剂。在开始吹氧之后的合适时间点，向Mn矿石等加料进入炉子1.不添加造渣剂，或者如果需要，添加小量的。添加。将惰性气体通过搅拌器2引入搅拌器中。因此，通过使用廉价的矿石来控制铁水的Mn，Cr，Ni成分。

9. 发明专利

JPS5690920A STEEL MAKING METHOD 失效
公开(公告)号：JPS5690920A
公开(公告)日：1981-07-23
申请号：JP17013579
申请日：1979-12-25
申请人： SUMITOMO METAL IND
发明人： MARUKAWA YUUJIYOU , ANEZAKI MASAHARU , SHIROTA YOSHIYASU , KAJIMOTO TSUTOMU , YOSHIDA AKINORI
IPC分类号： B22D11/00 , C21C5/28 , C21C7/00
摘要： PURPOSE:To make possible continuous casting of an ingot corresponding to rimmed steel by performing oxygen blowing in such a manner as to keep blowing-out carbon at less than predetermined amount and adding Al after refining under stirring thereby regulating O, Al, and Si contents. CONSTITUTION:Steel bath is put into such a converter into which gas can be introduced from below the bath surface and oxygen blowing is performed so that blowing-out carbon is kept at >=0.05%. At a proper time during oxygen blowing and after the oxygen blowing, an inert gas is introduced from below the steel bath surface, whereby refining under stirring is accomplished. After the refining under stirring, the molten steel is tapped from the converter into a ladle while the inclusion of the converter slag is being suppressed. During and/or after the tapping, Al is added and deoxidation is performed, whereby free oxygen is regulated to

10. 发明专利

JPS5650777A MANUFACTURE OF LONGITUDINALLY SHORT STEEL INGOT 失效
公开(公告)号：JPS5650777A
公开(公告)日：1981-05-08
申请号：JP12505579
申请日：1979-09-28
申请人： SUMITOMO METAL IND
发明人： OKAMOTO SETSUO , MARUKAWA YUUJIYOU , KIGUCHI HIROSHI , KITA YUKIMICHI , KAWASAKI MORIO
IPC分类号： B22D7/00 , B22D7/06 , B22D27/04 , B22D27/06
摘要： PURPOSE:To manufacture a fixed longitudinally short steel ingot without entailing a molding board crack by covering the inside wall of a mold with a heat insulator except a ring-shaped lip part and by specifying the ratios of molding board thickness and molding board weight to poured steel weight. CONSTITUTION:On molding board 1, flat mold 2 is mounted and the inside wall of it is covered with heat insulator 5 except ring-shaped lip part 3 at the inside of the bottom of mold 2. The thickness of molding board 2 should be not less than 350mm., and ratio W1/W2 of molding board weight W1 to poured steeel weight W2 not less than 0.7. Melted steel 4 to be poured into mold 2 is solidified radpidly by molding board 2 and ring-shaped lip part 3, minimizing the leakage of melted metal from the bottom of mold 2. Because of heat insulator 5, solidification from the side wall of mold 2 is prevented and because of heat insulator 6 placed over melted metal 4, that from the top of the melted metal is eliminated, attaining unidirectional solidification from the bottom of mold 2. Thus, the cracking of molding board 1 is prevented and the internal quality of the longitudinally short steel ingot is improved.

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