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11. 发明专利

JP2001207205A METHOD FOR OPERATING SOLID REDUCING MATERIAL PACKED BED TYPE SMELTING REDUCING FURNACE 失效
公开(公告)号：JP2001207205A
公开(公告)日：2001-07-31
申请号：JP2000013393
申请日：2000-01-21
申请人： KAWASAKI STEEL CO
发明人： MIZUFUJI MASATO , MASUMOTO SHINICHI , TAKAHIRA TAKUYA
IPC分类号： C21B11/02
摘要： PROBLEM TO BE SOLVED: To easily realize the stabilization of furnace operation at a low cost. SOLUTION: The required ratio Y of the quantity of heat at the base surface of furnace casing of the ordinate is the value obtained by dividing the necessary quantity Q1 of heat per 1 m2 of the furnace bottom when the operation is resumed after the furnace is stopped for eight hours by the quantity Q2 of heat supplied per 1 m2 the furnace bottom in ordinary operation and the required ratio 1.0 of the quantity of heat at the base surface of the furnace casing is in the case of Q1=Q2. The quantity Q2 of heat supplied per 1 m2 of the furnace bottom is made proportional to the amount of the produced melt, i.e., the amount of the pig slag recovered from a tap hole. The relation of X and Y is expressed by formulas Y=2.6930-0.45307μlog10(X). Y>=1.0Xmax=5454. From these formulas, the value of Y meeting the amount of tapping (production scale of the furnace) X per day is determined and further, the necessary quantity of heat to the furnace bottom is calculated from the value of Y. The amount of feeding the ferrous scrap into the furnace meeting the necessary quantity of heat is determined and the ferrous scrap of at least this amount of feeding is fed into the furnace.

12. 发明专利

JP2001164306A DEVICE OR CONTROLLING FURNACE OP PRESSURE IN SOLID REDUCING AGENT FILLING TYPE SMELTING REDUCTION FURNACE 失效
公开(公告)号：JP2001164306A
公开(公告)日：2001-06-19
申请号：JP34726199
申请日：1999-12-07
申请人： KAWASAKI STEEL CO
发明人： MASUMOTO SHINICHI , HAMAKI MAKOTO , MIZUFUJI MASATO , TAKAHIRA TAKUYA , AIZAWA KANJI , FUJIMURA TOSHIO , HARA YOSHIAKI
IPC分类号： C22B7/02 , C21B11/02 , C22B19/30 , F27D19/00
摘要： PROBLEM TO BE SOLVED: To provide a furnace top pressure control device in a smelting reduction furnace, with which the equipment cost becomes cheaper than that of the conventional equipment and the working environment in front of the furnace can be kept desirably. SOLUTION: In this furnace top pressure control device in the smelting reduction furnace having multi-step tuyeres for blowing a powdery ray material containing high volatility metal and executing the smelting reduction to a blown powdery raw material to recover the high volatility metal, a pressure gage which is arranged at the furnace upper part of the solid reducing agent filling type smelting reduction furnace or the inlet of an exhaust gas flue and measures the pressure of the exhaust gas, a computing element which compares the measured value with a pre-inputted target pressure range by receiving the measured value of the pressure gage, and a pressure control means which adjusts the opening degree and the number of revolutions, of a damper in an exhauster arranged on the downstream side of a dust collector in this flue so as to keep the above pressure to the target pressure range by receiving the outputted signal from the computing element, are provided.

13. 发明专利

JPH07126722A METHOD FOR MEASURING DEPTH OF IRON TAPPING HOLE OF BLAST FURNACE 失效
公开(公告)号：JPH07126722A
公开(公告)日：1995-05-16
申请号：JP27069193
申请日：1993-10-28
申请人： KAWASAKI STEEL CO
发明人： MASUMOTO SHINICHI , KAMIYA TOSHIO , SHIBAOKA FUMIO , HOSOMI KAZUO
IPC分类号： C21B7/12
摘要： PURPOSE:To measure the boring depth by executing arithmetic processing to number of revolutions of a sprocket connected with a chain for feed. CONSTITUTION:An iron tapping hole 4 of a blast furnace plugged with a mudding material is opened by fitting a drill or a metal rod 2 to a boring machine 3 hung with a guide cell 5 advanced/retreated with an air motor 6 through the feed chain 8 and rotating or impacting. At this time, the number of revolutions per sec of the sprocket 9 connected with the feed chain 8 is measure, and the measured value and the preset value are compared and it is detected that the tip part of the drill or the metal rod 2 penetrates the mudding material, and the arithmetic processing is executed to this detected time and the measured value. In the case of not deciding preset value, the advancing speed per sec of the drill or the metal rod 2 is calculated from the measured value of the number of revolutions of the sprocket 9, and the time required for penetrating the mudding material is detected from the variation of the advancing speed.

14. 发明专利

JPH0734111A METHOD FOR CONTROLLING FIRING OF MUD MATERIAL IN PREOPENING OF BLAST FURNACE TAP HOLE 失效
公开(公告)号：JPH0734111A
公开(公告)日：1995-02-03
申请号：JP18239493
申请日：1993-07-23
申请人： KAWASAKI STEEL CO
发明人： MASUMOTO SHINICHI , HIRANO JUNKICHI
IPC分类号： C21B7/12
摘要： PURPOSE:To adequately control hole openability by driving of a steel rod at the time of executing preopening of a mud material by determining the time since the mud material is packed into a tap hole a before a mud gun is removed to the specific conditions. CONSTITUTION:The mud material 5 is press fitted and packed by means of the mud gun 6 into the tap hole 2 penetrating the wall 1 of a blast furnace. The mud gun 6 is removed in the stage when firing of the mud material 5 progresses to some extent. The steel rod is driven into the mud material 5 and while the steel rod is held penetrated therein, the steel rod is held before the next tapping is started. The pressing time by the mud gun 6 of this time since the mud material 5 is packed into the tap hole 2 before the mud gun 6 is removed is determined according to a relation between the predetermined pressuring pressure on the mud material 5/the extruded amt. of the mud material and the pressing time by the mud gun 6. As a result, the excess and deficiency of the firing according to a change in the amt. of pressurization on the packed mud material 5 are estimated by the press fitting condition of the mud material 5. The firing of the mud material is thus kept constant.

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