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    Process for the production of calcium carbide and a shaft furnace for carrying out the process
    2.
    发明授权
    Process for the production of calcium carbide and a shaft furnace for carrying out the process 失效
    用于生产电石的方法和用于进行该工艺的竖炉

    公开(公告)号：US4644557A

    公开(公告)日：1987-02-17

    申请号：US751078

    申请日：1985-07-01

    Applicant: Joachim Ebeling ,  Peter Friedrich ,  Herbert Jekat ,  Walter Lugscheider ,  Ernst Riegler ,  Ernst Zajicek ,  Walter Achleitner ,  Ferdinand Jarema

    Inventor： Joachim Ebeling ,  Peter Friedrich ,  Herbert Jekat ,  Walter Lugscheider ,  Ernst Riegler ,  Ernst Zajicek ,  Walter Achleitner ,  Ferdinand Jarema

    IPC: C01B32/942 ,  H05B7/00 ,  H05H1/00

    CPC classification number: H05B7/00 ,  C01B31/32

    Abstract: In a process for the production of calcium carbide in a shaft furnace, a plasma arc (plasma torch) is generated by the introduction of electric energy with the help of a plasma burner device penetrating the upper cover of the shaft furnace. A counter electrode is provided in the bottom part of the shaft furnace. About the plasma arc or torch, a burden mixture of calcium-oxide and carbon-containing substances is concentrically introduced so as to form a protective mound of solid burden components on the inner wall of the furnace. In order to provide an operationally safe process by using plasma burners, with which both coarse and fine-grain burden components may be employed and with which calcium carbide is obtained in higher yields with an improved utilization of the energy consumed, the burden mixture is used separately as a coarse-grain fraction and as a fine-grain fraction. The coarse-grain fraction is introduced through an annular gap between the furnace wall and the furnace cover so as to form a movable protective mound along the furnace wall. The fine-grain fraction is introduced into the space between the plasma arc and the protective mound. The process gas forming at the reaction emerges through the coarse-grain-fraction protective mound and the annular gap. A shaft furnace includes a refractorily lined furnace wall and an upper cover, through which a plasma burner device and a charging device are guided. A counter electrode is provided in the bottom part of the furnace.

    Abstract translation: 在竖炉中生产碳化钙的方法中，借助穿透竖炉上盖的等离子体燃烧器装置，通过引入电能产生等离子体电弧（等离子体焰炬）。 对置电极设置在竖炉的底部。 关于等离子体电弧或手电筒，同心地引入氧化钙和含碳物质的负担混合物，以在炉内壁上形成固体负荷组分的保护堆。 为了通过使用等离子体燃烧器提供操作上安全的方法，可以使用粗粒和细粒负荷组分，并且以更高的产率获得电石，同时改善了所消耗的能量利用率，使用负荷混合物 分别作为粗晶粒分数和细晶粒分数。 粗粒部分通过炉壁和炉盖之间的环形间隙引入，以沿着炉壁形成可移动的保护堆。 细晶粒部分被引入到等离子体电弧和保护土堆之间的空间中。 在反应过程中形成的工艺气体通过粗粒部分保护堆和环形间隙出现。 竖炉包括一个不透光的内衬炉壁和一个上盖，等离子体燃烧器装置和充电装置通过该上壁被引导。 在炉底部设置对电极。

    Process for cooling and comminuting molten calcium carbide
    3.
    发明授权
    Process for cooling and comminuting molten calcium carbide 失效
    冷却和粉碎熔融碳化钙的工艺

    公开(公告)号：US4508666A

    公开(公告)日：1985-04-02

    申请号：US478893

    申请日：1983-03-28

    Applicant: Wilhelm F. Pietzarka ,  Albrecht Malten ,  Georg Strauss

    Inventor： Wilhelm F. Pietzarka ,  Albrecht Malten ,  Georg Strauss

    IPC: C01B32/942 ,  B29C23/00

    CPC classification number: C01B31/32 ,  C01P2004/50 ,  Y02P20/129 ,  Y10S264/51

    Abstract: The invention relates to a process comprising the cooling and comminuting of molten calcium carbide, wherein a molten stream of calcium carbide is tapped off from a furnace at 1900.degree. to 2100.degree. C., cooled and comminuted. More particularly, the molten calcium carbide is initially comminuted into droplets and the droplets are cooled to less than 200.degree. C. The process can be carried out with the aid of an apparatus comprised of a heatable or coolable feed duct, a nozzle for comminuting the molten stream, and a series of fluidized bed cooling zones.

    Abstract translation: 本发明涉及一种包括冷却和粉碎熔融碳化钙的方法，其中在1900℃至2100℃从熔炉中分离熔融的电石流，冷却并粉碎。 更具体地说，熔融碳化钙最初被粉碎成液滴，并且液滴被冷却到低于200℃。该方法可以借助于包括可加热或可冷却的进料管的设备，用于粉碎 熔融流和一系列流化床冷却区。

    Process for the manufacture of calcium carbide of predetermined quality
    4.
    发明授权
    Process for the manufacture of calcium carbide of predetermined quality 失效
    制备碳酸钙预处理质量的方法

    公开(公告)号：US3771259A

    公开(公告)日：1973-11-13

    申请号：US3771259D

    申请日：1970-07-08

    Applicant: KNAPSACK AG

    Inventor： PORTZ W ,  RITTERSHAUSEN G

    IPC: C01B32/942 ,  C10H21/10

    CPC classification number: C01B32/942

    Abstract: Production of calcium carbide of low gas yield from calcium carbide of higher gas yield. Calcium oxide having a particle size of between 1 and 8 mm is introduced,preferably during tapping, into the melt of such calcium carbide of higher gas yield.

    Abstract translation: 从碳化钙生产较低气体产率的电石产率较高。 引入粒度为1〜8mm的氧化钙，优选在攻丝期间，将这种较高产率的碳化钙的熔体引入。

    Process for making calcium oxide suitable for manufacturing calcium carbide
    8.
    发明授权
    Process for making calcium oxide suitable for manufacturing calcium carbide 失效
    制造适合制造电石的氧化钙的方法

    公开(公告)号：US3104158A

    公开(公告)日：1963-09-17

    申请号：US8878361

    申请日：1961-02-13

    Applicant: WACKER CHEMIE GMBH

    Inventor： EDUARD ENK ,  WOLFGANG LEICHER ,  WALTER SCHINDELIN

    IPC: C01B32/942 ,  C01F11/16 ,  C10H21/16

    CPC classification number: C10H21/16 ,  C01B32/942 ,  C01F11/16

    Abstract: CaO suitable for making CaC2 is produced by causing pulverulent Ca(OH)2, resulting from the manufacture of C2H2 from CaC2 and containin as impurities metallic iron and ion compounds, to fall freely through a magnetic field to remove the said impurities, and then the purified Ca(OH)2 is calcined and sintered to yield CaO. The purified hydroxide may be briquetted with anthracite, e.g. 7%, and calcined to oxide. An example compares separation of iron and ferrosilicon from the hydroxide by allowing it to fall past a magnetic drum, with the prior art operation of allowing the hydroxide to fall on to the drum.

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