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1. 发明专利

JP2521509B2 失效
公开(公告)号：JP2521509B2
公开(公告)日：1996-08-07
申请号：JP2745688
申请日：1988-02-10
申请人： SASABE MINORU , NIPPON KOKAN KK , OOSAKA SANSO KOGYO KK
发明人： SASABE MINORU , IWASAKI KATSUHIRO , HASHIMOTO HIROKICHI , FURUTA CHIKAYOSHI , MATSUSHIGE HARUHIKO , NAGATSUKA TOSHIO
IPC分类号： G01N33/20

2. 发明专利

JPH01203971A PROBE FOR MEASURING SI CONCENTRATION IN MOLTEN METAL 失效
公开(公告)号：JPH01203971A
公开(公告)日：1989-08-16
申请号：JP2745688
申请日：1988-02-10
申请人： SASABE MINORU , NIPPON KOKAN KK , OSAKA OXYGEN IND
发明人： SASABE MINORU , IWASAKI KATSUHIRO , HASHIMOTO HIROKICHI , FURUTA CHIKAYOSHI , MATSUSHIGE HARUHIKO , NAGATSUKA TOSHIO
IPC分类号： G01N33/20
摘要： PURPOSE:To measure the Si concentration in a molten metal speedily with high accuracy by setting the thickness of the coating layer of the Si concentration measuring probe to 30-300mum. CONSTITUTION:An element 1 for measuring the Si concentration in the molten metal which is incorporated in the probe for Si concentration measurement is constituted by forming the coating layer on the entire external surface of a solid-state electrolyte 2 in a one-end closed pipe shape, fixing a reference electrode 4 applied with a reference oxygen potential inside, and leading a lead line 5 out of the reference electrode 4. Then the thickness of the coating layer 3 formed on the surface of the solid-state electrode 2 is set to 30-300mum so as to measure the Si concentration in the molten metal with good reproducibility. Consequently, a measurement failure accident due to the dissolution of the coating layer 3, a probe burning accident, etc., due to a decrease in response are eliminated.

3. 发明专利

JPS62280316A METHOD FOR CONTROLLING CHARGE FOR MELT REDUCTION 失效
公开(公告)号：JPS62280316A
公开(公告)日：1987-12-05
申请号：JP12377986
申请日：1986-05-30
申请人： NIPPON KOKAN KK
发明人： FUKUDA MASACHIKA , TAKENAKA MASAKI , HASHIMOTO HIROKICHI
IPC分类号： C21B11/00
摘要： PURPOSE:To execute operation with a stable secondary combustion rate and reduction efficiency by calculating the kind of an inert gas to be blown, the flow rate of the gas and analysis values of components of an exhaust gas during the reduction in a melt reduction furnace and controlling charge automatically. CONSTITUTION:Ore, carbonaceous material, etc., are charged from a storage hopper 5 through a charging hopper 6 into the melt reduction furnace 1. The inert gas is blown into the furnace from bottom blowing tuyeres 7 and gaseous O2, etc., are blown therein from a top blowing lance 4. The above-mentioned carbonaceous material is thereby burned and the above-mentioned ore is reduced by melting to form the metal 2 in the furnace bottom and slag 3 thereon. The secondary combustion rate in the furnace 1 is periodically calculated in an arithmetic processing unit 11 from the kind and flow rate of the inert gas to be blown into the furnace 1 and the analysis values of the components of the exhaust gas to be discharged through a duct 9 from the furnace throat to an exhaust gas treatment installation 8, as measured by an analyzer 10. The carbonaceous material is automatically charged into the furnace when the calculated value does not attain the prescribed range and the ore is automatically charged therein when the value exceeds said range.

4. 发明专利

JPS5348007A LOADING AND UNLOADING APPARATUS FOR SUBLANCE 失效
公开(公告)号：JPS5348007A
公开(公告)日：1978-05-01
申请号：JP12274776
申请日：1976-10-15
申请人： NIPPON KOKAN KK
发明人： WADA KAN , MATSUO MASAHIRO , HORIUCHI YOSHIHIRO , HASHIMOTO HIROKICHI
IPC分类号： C21C5/46 , C21C5/00 , F27D21/00 , G01K1/14 , G01K13/12 , G01N33/20
摘要： PURPOSE:To reduce time required for loading and unloading probe by carrying out change of probe in parallel with cutting of new probe through combination of probe-taking out apparatus, probe-storing and cutting apparatus, and probetransferring apparatus.

5. 发明专利

JPS63177052A METHOD AND APPARATUS FOR MEASURING FEO CONTENT OF SINTERED ORE 失效
公开(公告)号：JPS63177052A
公开(公告)日：1988-07-21
申请号：JP927787
申请日：1987-01-19
申请人： NIPPON KOKAN KK
发明人： KOBAYASHI TAKASHI , HASHIMOTO HIROKICHI , INABA MAMORU , KOMATSU OSAMU , SHIMIZU MASAYASU
IPC分类号： G01N27/72
摘要： PURPOSE:To rapidly measure FeO-content on-line with high accuracy without receiving the effect of the voids of a sintered ore, by using a bridge circuit having the coil wound around a measuring cylinder for a reference specimen and that wound around a measuring cylinder for a specimen to be measured respectively provided to one arm thereof. CONSTITUTION:The coil wound around a measuring cylinder 42 for a reference specimen having the reference specimen inserted therein and the coil wound around a measuring cylinder 41 for a specimen to be measured having the specimen to be measured being a sintered ore inserted therein are respectively set to one arm of a bridge circuit and FeO-content is measured from the output of the bridge circuit obtained by utilizing the change in the inductances of both coils. The specimen to be inspected is adjusted to a desired particle size by screening to be set to the measuring cylinder 41 using a specimen-to-be- measured insert mechanism composed of a supply feed conveyor 33, a damper 34 and a sample receiving cylinder 37 transferred by a motor and transferred to a separate discharge conveyor from the receiving cylinder 37 after measurement to be discharged.

6. 发明专利

JPS63100138A METHOD FOR COMPOUNDING SINTERING RAW MATERIAL 失效
公开(公告)号：JPS63100138A
公开(公告)日：1988-05-02
申请号：JP24579286
申请日：1986-10-16
申请人： NIPPON KOKAN KK
发明人： KOBAYASHI TAKASHI , HASHIMOTO HIROKICHI , INABA MAMORU , KOMATSU OSAMU , HATTORI MICHINORI , IWAMOTO MUNETAKA
IPC分类号： C22B1/20
摘要： PURPOSE:To permit operation in such a manner as to optimize a yield and the grade of sintered ore at all times by executing smooth control of a small width in the change of control by utilizing equivocal control and detecting not only the change rate but also the present level of operating conditions. CONSTITUTION:The amt. of the returns to be generated is detected as the level of the returns tank. Said level and the change thereof are respectively evaluated by several equivocal functions. The change DELTAPR of the returns feeding ratio dependent upon the change rate of the returns level is then determined by such equivocal functions and the equivocal control rule. The equivocal functions of the above-mentioned change DELTAPR are weighted by using the condition alphai of the returns level determined from the respective equivocal functions to make the weighted function muPR of the control output and to determine muPR centroild PR' which is determined as a feeding change rate. More specifically, a level value of a level gage of the returns tank is inputted to an arithmetic processing circuit which makes the above-mentioned equivocal control calculation to calculate the change DELTAPR. Raw materials are fed in accordance with the signal from an arithmetic processor.

7. 发明专利

JPS62280320A EXHAUST GAS PRESSURE CONTROL DEVICE FOR REFINING FURNACE 失效
公开(公告)号：JPS62280320A
公开(公告)日：1987-12-05
申请号：JP12378086
申请日：1986-05-30
申请人： NIPPON KOKAN KK
发明人： FUKUDA MASACHIKA , TAKENAKA MASAKI , HASHIMOTO HIROKICHI
IPC分类号： C21B11/00 , C21C5/38
摘要： PURPOSE:To easily permit the effective utilization of the heat energy retained by the exhaust gas of an installation utilizing the exhaust gas and to automate the pressure control of the exhaust gas by controlling the throttling rate of a flow rate controller provided to the exhaust gas outlet of said installation in accordance with the pressure detected at the tap hole of a refining furnace. CONSTITUTION:The exhaust gas of a melt reduction furnace 1 is supplied through a flue 4 made into hermetic structure to a fluidized preheater 3 so that the heat energy retained by the above-mentioned exhaust gas is effectively utilized. A pressure detector 7 having a pressure sensor 8 is disposed to the tap hole 2 of the above-mentioned melt reduction furnace 1 to detect the pressure in the melt reduction furnace 1. The detected pressure is outputted by an output device 9 to a control device 10. The throttling rate of the flow rate controller 5 installed in the exhaust gas outlet of the fluidized preheater 3 is controlled by a driving device 6 in accordance with the detected value of the pressure. The pressure of the exhaust gas is thereby increased and is automatically controlled to the specified pressure.

8. 发明专利

JPS5912306A Method for measuring thickness of refractory for furnace body 失效
$Method for measuring thickness of refractory for furnace body$
标题翻译：用于测量炉体温度的方法
公开(公告)号：JPS5912306A
公开(公告)日：1984-01-23
申请号：JP12061282
申请日：1982-07-13
申请人： Nippon Kokan Kk
发明人： HASHIMOTO HIROKICHI , INOUE HIDEAKI , HIRATA YOSHIHISA , SHINTANI KAZUNORI
IPC分类号： G01B21/08 , C21C5/46 , G01B7/06
CPC分类号： C21C5/4673 , G01B7/06
摘要： PURPOSE:To detect the thickness of brick for a furnace body accurately without imparing an iron skin or the brick, by continuously measuring the temperature of the iron skin, and measuring the remaining thickness of the brick made of refractory based on the number of peaks of the temperatures during unit time. CONSTITUTION:Refractory 2 is lined on the inner surface of an iron skin 1 of a furnace body. A temperature sensor 3 is embedded in the iron skin 1. The temperature of the iron skin 1 is continuously measured for 24hr. When the remaining thickness of the brick is 300mm. or more, the temperature of the iron skin 1 is approximately constant, and the peak does not appear. When the remaining thickness is 200mm. or more, several peaks are yielded, however when the thickness becomes less than 200mm., the number of the occurrence of the peaks are quickly increased. Therefore, it is found that the peaks occur when the remaining thickness of the brick becomes less than 200mm.. Thus the thickness of the brick of the furnace body can be accurately measured.
摘要翻译：目的：通过连续测量铁皮的温度，并根据峰值数量测量耐火砖制作的剩余厚度，准确地检测出炉体砖的厚度，不用铁皮或砖，单位时间内的温度。构成：耐火材料2衬在炉体铁皮1的内表面上。温度传感器3嵌入铁皮1中。铁皮1的温度连续测量24小时。当砖的剩余厚度为300mm时。以上，铁皮1的温度大致恒定，峰不出现。剩余厚度为200mm时。以上时，产生多个峰，但是当厚度小于200mm时，峰的发生次数迅速增加。因此，发现当砖的剩余厚度小于200mm时出现峰值。因此，可以精确地测量炉体的砖的厚度。

9. 发明专利

JPS6333161A STABILIZING METHOD OF MOLTEN SURFACE IN MOLD FOR CONTINUOUS CASTING 失效
公开(公告)号：JPS6333161A
公开(公告)日：1988-02-12
申请号：JP17570586
申请日：1986-07-28
申请人： NIPPON KOKAN KK
发明人： SUZUKI MIKIO , KITAGAWA TORU , TEJIMA TOSHIO , MASAOKA TOSHIO , NIMURA YOICHI , HASHIMOTO HIROKICHI
IPC分类号： B22D11/10 , B22D11/11 , B22D11/112 , B22D11/115 , B22D11/116
摘要： PURPOSE:To prevent the waving of molten surface in a mold by circumferential magnetic field and induced current and the enclosure of powder, which is not yet melted, and to obtain a cast slab having good quality without enclosure of slag by conducting high frequency current into induction coil arranged just above the mold for continuous casting. CONSTITUTION:The induction coil 11 insulated 12 is arranged just above charged powder 3a at the circumference of continuous casting mold 1. The high frequency current is conducted in the coil 11 and then, by magnetic field and induced current generated in the circumference, the waving of molten surface 2 in the mold is prevented and also the powder, which is not yet melted, on the surface is melted by exothermic generated by the induced current and by intervening uniformly the thin layer of melting powder 3b between the mold 1 and the developed solidified shell 8, the cast slab surface having good quality without any enclosure of slag is obtd.

10. 发明专利

JPS62280322A DEVICE FOR OBSERVING INSIDE OF REFINING FURNACE 失效
公开(公告)号：JPS62280322A
公开(公告)日：1987-12-05
申请号：JP12377886
申请日：1986-05-30
申请人： NIPPON KOKAN KK
发明人： FUKUDA MASACHIKA , TAKENAKA MASAKI , HASHIMOTO HIROKICHI
IPC分类号： C21C5/46 , C21C5/42
摘要： PURPOSE:To always permit the exact observation of the inside of a refining furnace for every heating by inserting and supporting an observation device body which consists of a protective cooling pipe and an objective lens mounted to the top end of an optical fiber inserted into said pipe into the refining furnace through the throat in such a manner that said body can be tilted. CONSTITUTION:The observation device for the inside of the refining furnace is constituted of the observation device body 22 inserted into the refining furnace 21 through the throat and a supporting device to support said body tiltably. The observation device body 22 is constituted of the optical fiber 23 inserted into the protective cooling pipe 24, the objective lens 25 mounted to the top end thereof, protective glass 27 for said lens, a display device 26 for displaying the output taken out by the optical fiber 23 in the form of an image and a controller 28 for the same, a VTR 29, etc. The always exact observation of the furnace inside is thus executed by properly tilting the observation device body 22 to change the observation position in the vertical direction even if the position in the vertical direction of the reaction in the furnace changes.

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