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1. 发明专利

JPS6439310A METHOD FOR PROTECTING REFRACTORY IN BLAST FURNACE 失效
公开(公告)号：JPS6439310A
公开(公告)日：1989-02-09
申请号：JP19475987
申请日：1987-08-04
申请人： NIPPON STEEL CORP
发明人： TOKUNAGA MASAAKI , ASAI KENICHI , TOMIYASU MASAHARU
IPC分类号： C21B7/06
摘要： PURPOSE:To prevent development of abnormal erosion and to restrain progress of the erosion by packing mud containing TiO2 into an iron tapping hole near the eroded part in furnace bottom and sticking the TiO2 in the mud to the eroded position. CONSTITUTION:At the time of plugging the iron tapping hole 4 near the eroded position 5 in the furnace bottom 2 and lower side wall part 3 of the blast furnace 1, the muds 6 adding TiO2 content are packed with a mud gun 7 at plural times. Together with the wall making action of the mud 6, by sticking the TiO2 in the mud 6 to the eroded position 5 as high m.p. compound, the refractory in the blast furnace is protected. As the TiO2 content adding in the mud 6, ilmenite, sorel flux, iron sand, etc., is used. By this method, additional quantity of the TiO2 can be saved. Further, the operation is stabilized and the deterioration of the quality of molten iron can be prevented.

2. 发明专利

JPS63109124A PRODUCTION OF SINTERED ORE 失效
公开(公告)号：JPS63109124A
公开(公告)日：1988-05-13
申请号：JP25289686
申请日：1986-10-24
申请人： NIPPON STEEL CORP
发明人： TOKUNAGA MASAAKI , NOMIYA YOSHITAKA , OKAMOTO KENICHI
IPC分类号： C22B1/20
摘要： PURPOSE:To improve low-temp. reduction degradation index (RDI) and to improve and stabilize the quality over the entire part of a sintered layer by obliquely charging a raw material for degrading RDI onto an upper layer of a pallet, sintering the material, disintegrating and sieving the ore after sintering and circulating and charging the under size. CONSTITUTION:The raw material for degrading RDI such as easy melting Robe River ore is obliquely charged to the upper layer of the pallet of a sintering machine and is sintered. The calcination is thereby executed at the decreased amt. of forming the melt and the degradation of RDI is prevented in the upper layer where air permeability is good and the calcination temp. is low. The compounding ratio of the RDI degrading raw material is low and RDI can be improved in the lower layer where the air permeability is poor and the temp. is relatively high. The sintered matter after the sintering is disintegrated and sieved and the under size after the sieving is adequately circulated and charged to the upper layer and the lower layer. Since the returns are subjected to heat history, the degradation of RDI is obviated and the sintered ore having good quality is stably obtd.

3. 发明专利

JPS6311607A IRON OXIDE SLURRY FOR BLOWING INTO BLAST FURNACE 失效
公开(公告)号：JPS6311607A
公开(公告)日：1988-01-19
申请号：JP15548486
申请日：1986-07-02
申请人： NIPPON STEEL CORP
发明人： ISHIMATSU HIROYUKI , ASAI KENICHI , TOKUNAGA MASAAKI
IPC分类号： C21B5/00
摘要： PURPOSE:To obtain an iron oxide slurry for blowing into a blast furnace which can transport iron oxide stably at a high concn. without increasing blast furnace fuel by constituting said slurry of an aq. dispersion type surface active agent soln. adjusted to a specific viscosity and fine powder iron oxide contg. particles having a specific grain size at a specific ratio or above. CONSTITUTION:The aq. surface active agent soln. having >=100cp, more preferably about 100-1,000cp viscosity and having a dispersion effect is prepd. High- polymer surface active agents such as cellulose, lignin sulfonic acid, alginic acid, and naphthalenesulfonic acid are suitable as the above-mentioned surface active agent. The fine powder iron oxide contg. 10-50wt% particles having

4. 发明专利

JPS62250107A OPERATING METHOD FOR BLAST FURNACE 失效
公开(公告)号：JPS62250107A
公开(公告)日：1987-10-31
申请号：JP9265886
申请日：1986-04-21
申请人： NIPPON STEEL CORP
发明人： TOKUNAGA MASAAKI , INOKUCHI KAZUYOSHI , KAWAOKA KOJI , USU CHIKASHI
IPC分类号： C21B5/00 , C21B7/24
摘要： PURPOSE:To exactly know the change of a furnace condition in a method for operating a blast furnace by determining the top end region in a heat preserving zone where the temp. change is significant as points to be measured. CONSTITUTION:A furnace top sonde 1 positioned in the stock line S for raw material, a shaft upper sonde 2 positioned below the same and a shaft middle sonde 3 positioned thereunder are respectively arranged radially in the blast furnace F. The sonde 3 is disposed in the position corresponding to 35-45% of the height of change on the basis of the stock line S in order to make sampling and measuring in the top end region of the heat preserving zone where the positions fluctuates vertically and radially relative to the furnace F. The plural measuring points P1-P6 are provided for the purpose of sampling. The stability of the furnace condition is discriminated by the temp. differences between the temps. measured at said measuring points P1-P6 and the reference temps. to maintain the stable furnace condition.

5. 发明专利

JPS59113105A Continuous treating device for molten slag of blast furnace 失效
标题翻译：连续处理烤炉熔渣装置
公开(公告)号：JPS59113105A
公开(公告)日：1984-06-29
申请号：JP22294882
申请日：1982-12-21
申请人： Nippon Steel Corp , Nittetsu Plant Designing Corp
发明人： OGATA MAMORU , TOKUNAGA MASAAKI , MURAYAMA TSUNEMI
IPC分类号： C21B3/06 , C21B7/14 , F27D3/15 , F27D15/00
CPC分类号： C21B7/14
摘要： PURPOSE:To improve recovery rate of granular pig, to decrease operation in adverse environment and to prevent increase in equipment size by making a vessel for separating pig and slag, which is punched with a tap hole for molten pig in the lower part at a suitable step in the intermediate position of a flow passage for molten slag, freely tiltable in the direction crossing the flow passage direction of the molten slag. CONSTITUTION:Molten slag is run in a molten slag spout 4a and is admitted into a vessel 6 for separating pig and slag, and after the granular pig in the molten slag is settled in the lower part of the vessel 6, the slag is fed through an outflow part 10 for molten slag into a molten slag spout 4b. The granular pig settled in the bottom of the vessel 6 is gathered to molten pig. When the molten pig accumulates to a suitable amt., the vessel 6 is tilted to an upwardly elevating part 14 side by means of a pin gear 12 and gear 13 provided at the end of an arced stage 9 and driven by a driving source. The molten pig is run to a return spout for molten pig through a tap hole 15 and is thus recovered. The vessel 6 is turned over to an upright position after the molten pig is discharged. The molten slag is admitted through the spout 4a into the vessel 6 even during tilting and is run through a discharge part 10 into the spout 4b whereby the continuous treatment is accomplished.
摘要翻译：目的：提高颗粒猪的恢复率，减少不利环境的运转，防止生产用于分离猪渣的容器，增加设备的使用寿命。在熔融炉渣流道的中间位置处，可以沿与熔渣流动方向交叉的方向自由倾斜。构成：熔渣在熔渣出口4a中运行，并进入容器6中以分离猪渣，在熔渣中的粒状猪沉淀在容器6的下部后，炉渣通过用于熔渣进入熔渣排出口4b的流出部分10。沉降在容器6底部的颗粒状猪被聚集成熔融猪。当熔融猪积聚到合适的温度时，容器6通过设置在弧形台9的端部并由驱动源驱动的销齿轮12和齿轮13倾斜到向上升高的部分14侧。熔融猪通过抽头孔15运行到用于熔融猪的回流口，并因此回收。在排出熔融猪后，将容器6翻转到直立位置。即使在倾斜期间，熔渣通过喷口4a进入容器6，并且通过排放部分10流入喷口4b，从而实现连续处理。

6. 发明专利

JPH01184236A PRODUCTION OF MGO-CONTAINING SINTERED ORE 失效
公开(公告)号：JPH01184236A
公开(公告)日：1989-07-21
申请号：JP725088
申请日：1988-01-16
申请人： NIPPON STEEL CORP
发明人： TOKUNAGA MASAAKI , IKEDA TSUNEO , USU CHIKASHI
IPC分类号： C22B1/20
摘要： PURPOSE:To produce a sintered ore which is uniformly dispersed with MgO and has high strength by using MgO-contg. raw materials such as serpentine and dolomite as a bedding material on a sintering pallet and depositing ordinary sintering raw materials thereon, then sintering the materials from above to below at the time of producing the MgO-contg. sintered ore. CONSTITUTION:The grains, sized 7-30mm, of the MgO-contg. raw materials such as serpentine or green dolomite are used as the bedding material on the endless pallet of a sintering machine and the sintered ore raw materials consisting of powders of iron ore and coke, etc., are deposited thereon, then the upper part is ignited to sinter the coke in the raw materials from the upper part to the lower part in order to produce the molten ore contg. MgO and having a low S content by forming basic slag in a blast furnace as the sintered ore for the blast furnace. The MgO-contg. bedding material are calcined and the part thereof is half fusion-bonded with the sintered ore by the sintering reaction heat of the middle and lower layers in the sintering raw materials. Such sintered raw ore is disintegrated and the high-basicity sintered ore into which the MgO is uniformly incorporated is obtd.

7. 发明专利

JPS63145724A MANUFACTURE OF SINTERED ORE 失效
公开(公告)号：JPS63145724A
公开(公告)日：1988-06-17
申请号：JP29330186
申请日：1986-12-09
申请人： NIPPON STEEL CORP
发明人： TOKUNAGA MASAAKI , NOMIYA YOSHITAKA , OKAMOTO KENICHI , KITAMURA TADAHIKO
IPC分类号： C22B1/16 , C22B1/20
摘要： PURPOSE:To manufacture sintered ore having improved suitability to reduction powdering at low temp., by treating sintered ore with industrial waste water from an iron mill to form a composite film contg. chlorides. CONSTITUTION:Industrial waste water from an iron mill is sprinkled on sintered ore discharged from a sintering apparatus or the sintered ore is immersed in the waste water. By this treatment, a composite film contg. Ca, Mg and Na chlorides, SO4 salts and solid matter in a mixed state is formed on the surface of the sintered ore. Thus, sintered ore having improved suitability to reduction powdering at low temp. is obtd. without lowering the rate of reduction because of the low chloride content. When the resulting sintered ore is used, the operation of a blast furnace is stabilized and the productivity is improved.

8. 发明专利

JPS6157363B2 失效
公开(公告)号：JPS6157363B2
公开(公告)日：1986-12-06
申请号：JP2446480
申请日：1980-02-28
申请人： NIPPON STEEL CORP
发明人： EZAKI KAN , WAGURI SHINJIRO , TOKUNAGA MASAAKI
IPC分类号： C21B5/00

9. 发明专利

JPS5983964A MANUFACTURE OF WATER GRANULATED SLAG 失效
公开(公告)号：JPS5983964A
公开(公告)日：1984-05-15
申请号：JP19517882
申请日：1982-11-06
申请人： SHINNITTETSU KAGAKU , NIPPON STEEL CORP
发明人： TANAKA KUNITOSHI , TOKUNAGA MASAAKI , OKU YASUTAKA , YAMAGUCHI MOTONORI
IPC分类号： C04B5/02 , C21B3/06

10. 发明专利

JPS56123305A OPERATING METHOD FOR BLAST FURNACE 失效
公开(公告)号：JPS56123305A
公开(公告)日：1981-09-28
申请号：JP2446480
申请日：1980-02-28
申请人： NIPPON STEEL CORP
发明人： EZAKI KIYOSHI , KAZUKURI SHINJIROU , TOKUNAGA MASAAKI
IPC分类号： C21B5/00
摘要： PURPOSE:To improve productivity and lower the cost of iron making without accompanying the increase in fuel cost by specifying the temp. at tuyere ends and further specifying the relation between the furnace wall temp. loaded from the root part of the infurnace melt-stuck matter and the max. temp. of the furnace wall in the upper part. CONSTITUTION:In blast furnace operation, the temp. at tuyere ends is kept at >=2,500 deg.C, and the infurnace constitution of (charged iron and steel ore + charged sintered one) weight O/charged coke weight C is controlled to furnace center part > furnace wall part. Thereby, the ventilation resistance in the furnace center part is increased and the lengthening of the melt-stuck zone toward the upper place is prevented. Further, the relation between the furnace wall temp. D loaded from the root part of the infurnace melt-stuck matter and the maximum temp. of the furnace wall S in the upper part is so controlled as to assume S/D

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