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1. 发明专利

JPH01127611A METHOD FOR PLUGGING IRON TAPPING HOLE IN BLAST FURNACE 失效
公开(公告)号：JPH01127611A
公开(公告)日：1989-05-19
申请号：JP28377487
申请日：1987-11-09
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： KANEKO KENICHI , HIRANO JUNKICHI , YAMAZAKI SADAYUKI , YAMANE TOSHIO , KAWAKAMI TATSUO
IPC分类号： C21B7/12
摘要： PURPOSE:To improve packing density of mud and to prevent trouble of hole opening by packing the mud into an iron tapping hole, digging large diameter hole to the halfway of monolithic layer in the furnace of the mud during burning this and again packing the mud in the large diameter hole. CONSTITUTION:The mud 3 is packed with a mud gun in the ordinary method into the iron tapping hole 2 penetrating the furnace wall 1 in a blast furnace. During burning this mud 3 (e.g. about 5-10min), the hole 8 of large diameter (about 60-100mmphi) is dug to the halfway of the monolithic layer 5 in the furnace of the mud 3 by using a drill 4 and the mud 3' is again packed in there. By this method, the mud 3' can be surely packed in every corner of the large diameter hole 6 and the packing density is improved. Successively, at the time of tapping molten iron, the hole 2a of small diameter (about 38-60mmphi) is dug to the muds 3', 3 with drill bit, etc., to open the iron tapping hole 2.

2. 发明专利

JPH01127612A METHOD FOR PLUGGING IRON TAPPING HOLE IN BLAST FURNACE 失效
公开(公告)号：JPH01127612A
公开(公告)日：1989-05-19
申请号：JP28377587
申请日：1987-11-09
申请人： KAWASAKI STEEL CO , KAWASAKI REFRACTORIES CO LTD
发明人： KANEKO KENICHI , HIRANO JUNKICHI , YAMAZAKI SADAYUKI , YAMANE TOSHIO , KAWAKAMI TATSUO
IPC分类号： C21B7/12
摘要： PURPOSE:To improve packing density of mud and to prevent trouble of hole opening by packing the mud into an iron tapping hole, digging large diameter hole to the halfway of the furnace wall of the mud during burning this and again packing the mud in the large diameter hole. CONSTITUTION:The mud 3 is packed with a mud gun in the ordinary method into the iron tapping hole 2 penetrating the furnace wall 1 in a blast furnace. During burning this mud 3 (e.g. about 5-10min), the hole 5 of the large diameter (about 60-100mmphi) is dug to the halfway of the furnace wall 1 of the mud 3 by a drill 4 and the mud 3' is again packed in the large diameter hole 5. By this method, the mud 3' can be sufficiently and surely packed in every corner of the large diameter hole 5 and the packing density is improved. Successively, at the time of tapping the molten iron, the penetrating hole 2a of small diameter (about 38-60mmphi) from the large diameter hole 5 to the muds 3', 3 with drill bit, etc., to open the iron tapping hole 2.

3. 发明专利

JPH06330117A METHOD FOR OPENING TAPPING HOLE IN BLAST FURNACE 失效
公开(公告)号：JPH06330117A
公开(公告)日：1994-11-29
申请号：JP12121593
申请日：1993-05-24
申请人： KAWASAKI STEEL CO
发明人： MASUMOTO SHINICHI , HIRANO JUNKICHI
IPC分类号： C21B7/12
摘要： PURPOSE:To enable the selection of the optimum drill, metallic rod, etc., in accordance with blast furnace condition by evaluating tapping information till the previous iron tapping of a tapping hole in the blast furnace in each evaluating section and deciding the opening hole vol. in the tapping hole based on the tapping condition at the previous time obtd. by this evaluation. CONSTITUTION:The tapping holes in the blast furnace are opened in order by using the drill and the metallic rod in a hole opening machine. At this time, the tapping information till the previous tapping of the tapping hole in this blast furnace is divided into eight items composed of a tapping velocity pattern, initial stage slag balance, max. remaining slag quantity in the tapping, slag balance at the time of completing the tapping, necessary time of starting slagging, slag stopping caused by clogging of the hole (two or more times) and tapping velocity after three times, etc., made to form the pattern in each item and made to form the table for evaluating sections. Successively, the previous iron tapping condition is applied to the evaluating sections in the above table. Based on the condition grasped by this information, by considering this information in each item, the diameters of the drill and the metallic rod fitted to the hole opening machine matched to the blast furnace condition are selected.

4. 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.

5. 发明专利

JPH04198411A METHOD FOR CONTROLLING MOLTEN IRON TAPPING HOLE IN BLAST FURNACE 失效
公开(公告)号：JPH04198411A
公开(公告)日：1992-07-17
申请号：JP32824690
申请日：1990-11-28
申请人： KAWASAKI STEEL CO
发明人： OGAMI MASAMICHI , HIRANO JUNKICHI
IPC分类号： C21B7/14
摘要： PURPOSE:To restrain molten iron tapping mixing gas, to extend molten iron tapping interval and to reduce the number of the molten iron tapping times, etc., by boring neiborhood of inner part of a molten iron tapping hole and mud material part in a furnace developing crack, etc., with the deterioration in the blast furnace larger than the ordinary method and pouring the mud material into the obtd. space part. CONSTITUTION:In inner part of molten iron tapping opening 2 arranged at side wall in the blast furnace body 1, the molten iron tapping hole 3 shown with the dotted line is arranged, and the mud material 5 is packed into the inner part of molten iron tapping hole 3 and to position from neighborhood of tip part to the furnace bottom 6. This mud material 5 part is opened in about 80-300mm diameter by using oxygen, etc., to the neighbor position at the very limit where the molten iron is not spouted out to dig the space part 7, and the mud material is buried into the space part 7 with a mud gun, etc. By this method, the part, where ordinarily the mud material is deteriorated and crack is developed and the gas is spouted, is sealed with the mud material 5 and the spout of gas is prevented.

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