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    • 2. 发明专利
    • Fluidized bed reducing method of iron ore
    • 铁矿石流化床还原方法
    • JPS6169910A
    • 1986-04-10
    • JP19133084
    • 1984-09-12
    • Kobe Steel Ltd
    • SAEKI OSAMUMORI KENJIONODA MAMORUWATANABE MAKOTOSHINOHARA KATSUFUMIASHINAGA TAKEHIKOIMANISHI NOBUYUKI
    • C21B13/00
    • C21B13/0033Y02P10/136
    • PURPOSE: To prevent the generation of sticking and to execute efficiently reduc tion reaction in a smoothly flowing state by sticking the carbon content consisting of a coal type carboneous material to the surface of fine and granular iron ore then reducing the iron ore by a fluidized bed method.
      CONSTITUTION: The fine and granular iron ore Ore and the pulverous carboneous material C are charged into the 1st fluidized bed furnace 1 and a reducing gas (or inert gas) is blown therein from the bottom to heat the materials to about 400W600°C. The carbon content is thus stuck and deposited at about 3.5W5wt% on the iron ore surface. The carbon-stuck iron ore (C/Ore) is fed to the 2nd fluidized bed furnace 2 where the reducing gas is blown from the bottom to heat the ore to about 900W1,200°C and to reduce the ore. Even if the reaction temp. is increased in this state, sticking does not arise and the reduction reaction progresses smoothly. The reduced iron F obtd. in such a manner is fed together with carbon and oxygen to a melting furnace 3 where impurities are removed from the reduced iron and the molten iron is produced.
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:为了防止产生粘附并通过将由煤型碳质材料构成的碳含量粘附在细粒状铁矿石的表面上,以平滑流动的状态有效地进行还原反应,然后通过流化床还原铁矿石 方法。 构成:将细粒状铁矿石和粉状碳质材料C装入第一流化床炉1中,从底部向其中吹入还原气体(或惰性气体),将材料加热至约400-600度。 C。 因此碳含量被粘附并沉积在铁矿石表面上的约3.5-5wt%。 将碳 - 碳铁矿石(C / Ore)进料到第二流化床炉2中,从底部吹入还原气体,将矿石加热到约900-1200℃,并减少矿石。 即使反应温度 在这种状态下增加,粘附不会发生,并且还原反应进行顺利。 减铁铁 以这种方式与碳和氧一起进料到熔化炉3,其中从还原铁中除去杂质并产生铁水。
    • 3. 发明专利
    • OPERATION OF BLAST FURNACE
    • JPS55100906A
    • 1980-08-01
    • JP738079
    • 1979-01-24
    • KOBE STEEL LTD
    • FUJITA ISAOIMANISHI NOBUYUKITSUTAYA TADAOWATANABE MAKOTOKAWAI TAKAO
    • C21B5/00
    • PURPOSE:To carry out stabilizing operation at a low coke ratio by balancing three factors of an oxygen amt. charged per min. per unit volume of a blast furnace, a charging ratio of ore to coke and a rate of the reduction of the ore by a method wherein crushed ores or deformed pellets are used when the condition of the blast furnace is controlled by the three factors. CONSTITUTION:An oxygen amt. X charged per min. per unit volume of a blast furnace, a charging ratio Y of ore to coke and an average JIS reduction rate of the ore are determined as the factors of furnace heat balance variation, the operation being influenced by the factors. The three factors are composed of three parallel axes, and X, Y and Z valued are scaled. Lines l1 and l2 are drawn between the corresponding values to the factors X, Y and between the corresponding values to the factors Y, Z to form angles theta1, theta2 to the horizontal line. There is a furnace heat stabilizing zone where theta is from 150-210 deg.C when theta=theta1+theta2+180 deg.. In order to stabilize the furnace heat by decreasing the O2-charging value X, increasing the low coke ratio Y and setting theta within the above range, the ores are crushed or deformed pellets are used to increase Z value. By controlling theta within the desired range, the condition of the furnace can be stabilized.
    • 9. 发明专利
    • Desulfurization for carbon material
    • 碳材料的脱硫
    • JPS6181491A
    • 1986-04-25
    • JP20433984
    • 1984-09-28
    • Koa Sekiyu KkKobe Steel Ltd
    • MOCHIDA ISAOMIURA EIJIMORI KENJIONODA MAMORUWATANABE MAKOTO
    • C10L9/04
    • PURPOSE: A carbonaceous material is heat-treated, then subjected to hy drogenative desulfurization to effect high-efficiency and inexpensive desulfurization from coalor oil coke whereby a carbonaceous material of low sulfur content with wide application is obtained.
      CONSTITUTION: The objective carbonaceous material of low sulfur content is obtained by heat-treating a carbonaceous material previously, preferably in an inert atmosphere such as nitrogen gas, at 900W1,000°C for 10W20 minutes or in an active atmosphere containing oxygen and steam at 300W500°C for 10W20 minutes, then effecting desulfurization at 700W1,000°C (e.g., at 750°C in the presence of crushed iron ore).
      COPYRIGHT: (C)1986,JPO&Japio
    • 目的:将碳质材料进行热处理,然后进行脱氢脱硫,从煤油焦炭脱硫得到高效廉价,得到低硫含量的碳质材料。 构成:低硫含量的目的含碳材料通过先前优选在惰性气氛例如氮气中在900-1,000℃下热处理10-20分钟或在含有氧气的活性气氛中进行, 和蒸汽在300-500℃下进行10-20分钟,然后在700-1,000℃下进行脱硫(例如,在碎铁矿的存在下在750℃)。
    • 10. 发明专利
    • Manufacture of uncalcined lump ore
    • 未分类的LUMP ORE的制造
    • JPS5935638A
    • 1984-02-27
    • JP14530482
    • 1982-08-20
    • Kobe Steel Ltd
    • FUJITA ISAOIMANISHI NOBUYUKIWATANABE MAKOTOSHIRIEDA MASAOMORITA YUUJI
    • C22B1/243
    • PURPOSE: To manufacture uncalcined lump ore of superior quality by blending fine hematite or magnetite with a proper amount of fine limonite in accordance with the desired swelling index of product lump ore.
      CONSTITUTION: Uncalcined lump ores are manufactured using fine hematite, magnetite and limonite as starting materials, respectively. When the lump ores are ruduced at 900°C for 1hr, the lump ore of fine hematite shows the highest swelling index, and the lump ore of fine limonite shrinks. Fine hematite or magnetite is blended with a proper amount of fine limonite in accordance with the desired swelling index of product lump ore to control the swelling properties of the lump ore when the fine ores are blended as starting materials. A binder is added to the starting materials, and they are molded into lumps.
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:根据产品块矿石的所需溶胀指数,通过将细小的赤铁矿或磁铁矿与适量的细褐铁矿混合,制造出优质的未煅烧块状矿石。 构成:未煅烧的块状矿石分别以细赤铁矿,磁铁矿和褐铁矿为原料制造。 当矿石在900℃下还原1小时时,细小赤铁矿块状矿石的膨胀指数最高,细褐铁矿的块状矿石收缩。 根据产品块矿石的所需溶胀指数,将细赤铁矿或磁铁矿与适量的细褐铁矿混合,以控制当细矿石作为原料混合时块状矿石的溶胀性质。 将粘合剂加入到起始材料中,并将它们模制成块体。