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    Agent and process for desulfurizing molten metals
    1.
    发明授权
    Agent and process for desulfurizing molten metals 失效
    脱硫熔融金属的代理和工艺

    公开(公告)号：US4988387A

    公开(公告)日：1991-01-29

    申请号：US485960

    申请日：1990-02-27

    申请人： Hermann Schrodter ,  Albert Braun

    发明人： Hermann Schrodter ,  Albert Braun

    IPC分类号： C21C1/02

    CPC分类号： C21C1/025

    摘要： An agent for desulfurizing molten metals, in particular molten iron, comprises a CaC.sub.2 /CaO crystal blend with a maximum of 62% by weight of CaC.sub.2, gas-evolving substances and 0 to 44% by weight of metallic magnesium as the components.For desulfurizing molten metals, in particular molten iron, using this agent, either the mixture comprising both the CaC.sub.2 /CaO crystal blend and gas-evolving substances, and the magnesium, are fluidized separately and the two fluidized products are combined immediately before they enter the melt, or the CaC.sub.2 /CaO crystal blend, gas-evolving substances and magnesium components are fluidized together and the fluidized product is introduced into the melt.

    摘要翻译： 用于脱硫熔融金属，特别是铁水的试剂包括CaC 2 / CaO晶体共混物，其中最多含有62重量％的CaCl 2，气体放出物质和0至44重量％的金属镁作为组分。 为了使熔融金属，特别是铁水脱硫，使用该试剂，包括CaCl 2 / CaO晶体共混物和气体逸出物质的两者的混合物和镁分别流化，两个流化产物在进入 熔融或CaC 2 / CaO晶体共混物，气体逸出物质和镁组分一起流化并将流化产物引入熔体中。

    Process for the manufacture of desulfurizing agents for crude iron or steel melts
    2.
    发明授权
    Process for the manufacture of desulfurizing agents for crude iron or steel melts 失效
    制造粗铁或钢熔体脱硫剂的方法

    公开(公告)号：US4368071A

    公开(公告)日：1983-01-11

    申请号：US222086

    申请日：1981-01-02

    申请人： Albert Braun ,  Willi Portz ,  Georg Strauss ,  Hans-Martin Delhey

    发明人： Albert Braun ,  Willi Portz ,  Georg Strauss ,  Hans-Martin Delhey

    IPC分类号： C21C1/02 ,  C21C7/064 ,  C21C7/076 ,  C21C7/02

    CPC分类号： C21C1/025 ,  C21C7/0645

    摘要： The present invention relates to a process for the manufacture of desulfurizing agents containing 1-6% by weight of chemically bonded water, based on calcium oxide-containing calcium carbide, for crude iron and steel melts. To this end, a molten mixture of calcium carbide and calcium oxide with a CaO content of 20 to 80% by weight is produced, which is allowed to solidify into a block. Next, the block which still has an average temperature of more than 400.degree. C., is rough-crushed to particles with a size of less than 150 mm and calcium oxide is added to the comminuted mixture, which still has a temperature of at least 400.degree. C., in accordance with the CaO content desired in the end product. The mixture is finally ground in the presence of air or nitrogen with a moisture content of from 5 to 20 g/m.sup.3 (at 1.013 bar and 273.15 K) at temperatures below 100.degree. C. to particles with a size of less than 10 mm.

    摘要翻译： 本发明涉及一种用于生产含铁1-6重量％化学键合水的脱硫剂的方法，所述化学键合水基于含氧化钙的碳化钙，用于粗钢和钢熔体。 为此，产生CaO含量为20〜80重量％的碳化钙和氧化钙的熔融混合物，使其固化成块状。 接下来，将平均温度超过400℃的块粗粉碎成尺寸小于150mm的颗粒，并将氧化钙加入至粉碎的混合物中，该混合物至少具有至少的温度 400℃，根据最终产品中所需的CaO含量。 在空气或氮气存在下，将混合物最终在低于100℃的温度下在5至20g / m 3（在1.013巴和273.15K）的水分下研磨至尺寸小于10毫米的颗粒。

    Agent for desulfurizing crude iron and steel melts, and process for making it
    3.
    发明授权
    Agent for desulfurizing crude iron and steel melts, and process for making it 失效
    用于脱硫粗钢和钢熔体的试剂及其制备方法

    公开(公告)号：US4323392A

    公开(公告)日：1982-04-06

    申请号：US148565

    申请日：1980-05-09

    申请人： Albert Braun ,  Willi Portz ,  Georg Strauss

    发明人： Albert Braun ,  Willi Portz ,  Georg Strauss

    IPC分类号： C21C1/02 ,  C21C7/064 ,  C21C7/076 ,  C21C7/02

    CPC分类号： C21C7/0645 ,  C21C1/025

    摘要： The invention provides an agent for desulfurizing crude iron and steel melts, the desulfurizing agent being based on calcium carbide containing calcium oxide. The desulfurizing agent is produced by admixing a calcium carbide melt having up to 45 weight % of calcium oxide therein with an excess of 3 to 15 weight %, based on the CaO-content of more than 45 up to 80 weight % desired for the final product, of calcium oxide. The resulting mixture is allowed to solidify and cool down to temperatures of 350.degree. to 450.degree. C. Next, the solidified melt is precrushed to material with a size of less than 150 mm. Particles with a size of less than 4 mm are screened off and the remaining material is comminuted, with the exclusion of moisture, to material with a size of less than 10 mm.

    摘要翻译： 本发明提供了一种用于将粗铁和钢熔体脱硫的试剂，脱硫剂是以含有氧化钙的碳化钙为基础的。 脱硫剂是通过将最多达45重量％的氧化钙的电石熔体与过量的3至15重量％的CaO相混合而制得的，所述CaO含量基于最终的所需的45重量％至80重量％ 产品，氧化钙。 使所得混合物固化并冷却至350℃至450℃的温度。接下来，将固化的熔体预先冲洗成尺寸小于150mm的材料。 筛选尺寸小于4毫米的颗粒，将剩下的材料粉碎，排除水分，使其尺寸小于10毫米。

    Process for making agents for desulfurizing crude iron or steel melts
    5.
    发明授权
    Process for making agents for desulfurizing crude iron or steel melts 失效
    制造粗铁或钢熔体脱硫剂的方法

    公开(公告)号：US4400292A

    公开(公告)日：1983-08-23

    申请号：US359229

    申请日：1982-03-18

    申请人： Albert Braun ,  Willi Portz ,  Georg Strauss ,  Hans-Martin Delhey

    发明人： Albert Braun ,  Willi Portz ,  Georg Strauss ,  Hans-Martin Delhey

    IPC分类号： C21C1/02 ,  C21C7/064 ,  C21C7/076 ,  C01B31/32

    CPC分类号： C21C1/025 ,  C21C7/0645

    摘要： The disclosure relates to a process for the manufacture of desulfurizing agents containing 1-6 weight % chemically combined water, based on calcium oxide and carbon-containing calcium carbide, for crude iron and steel melts. More particularly, the disclosure provides for a molten mixture of calcium carbide and calcium oxide containing 20 to 80 weight % CaO to be made from lime and coke; for the mixture to be allowed to cool and solidify into a block; for the solidified block while it still has an average temperature of more than 400.degree. C. to be crushed to particles with a size of less than 150 mm; for the comminuted mixture, which still has a temperature of at least 400.degree. C. to be admixed with a quantity of calcium oxide necessary to establish in the resulting mixture a total content of CaO corresponding to the CaO content desired in the end product; and for the mixture to be gound while intensively mixing it with free carbon and carbonate in the presence of air or nitrogen with a moisture content of 5 to 20 g/m.sup.3 (at 1.013 bar and 273.15 K.) at temperatures below 100.degree. C. to particles with a size of less than 10 mm.

    摘要翻译： 本公开内容涉及一种用于生产含有1-6重量％化学结合水的脱硫剂的方法，其基于氧化钙和含碳的碳化钙，用于粗钢和钢熔体。 更具体地，本公开提供了由石灰和焦炭制成的含有20至80重量％的CaO的碳化钙和氧化钙的熔融混合物; 使混合物冷却并固化成块; 对于固化块，同时其平均温度大于400℃被粉碎成尺寸小于150mm的颗粒; 对于粉碎的混合物，其仍然具有至少400℃的温度，以与在所得混合物中建立相应于最终产物中所需的CaO含量的CaO的总含量相配合的一定量的氧化钙。 并且在空气或氮气存在下，在低于100℃的温度下，将水分含量为5至20g / m 3（在1.013bar和273.15K）下，将混合物与游离碳和碳酸盐剧烈混合。 到尺寸小于10毫米的颗粒。

    Production of agent for desulfurizing crude iron and steel melts
    6.
    发明授权
    Production of agent for desulfurizing crude iron and steel melts 失效
    生产用于脱硫粗钢和钢熔体的试剂

    公开(公告)号：US4318822A

    公开(公告)日：1982-03-09

    申请号：US149745

    申请日：1980-05-14

    申请人： Albert Braun ,  Willi Portz ,  Georg Strauss

    发明人： Albert Braun ,  Willi Portz ,  Georg Strauss

    IPC分类号： C21C1/02 ,  C21C7/064 ,  C21C7/076 ,  C01B31/32

    CPC分类号： C21C1/025 ,  C21C7/0645

    摘要： The invention relates to the production of an agent for desulfurizing crude iron and steel melts, the desulfurizing agent being based on calcium carbide containing calcium oxide. To this end, a calcium carbide/calcium oxide/starting melt mixture with a CaO-content within the range 20 to 80 weight % is produced from lime and coke and allowed to solidify to a block. While the solidified block still has an average temperature of more than 400.degree. C., it is crushed to particulate material with a size of less than 150 mm. Next, the hot crushed material of at least 400.degree. C. is admixed with a quantity of calcium oxide necessary to have in the resulting mixture an overall content of CaO corresponding to that desired for the final product. The whole is thoroughly mixed and crushed with exclusion of moisture at temperatures higher than 100.degree. C. to particulate material with a size of less than 10 millimeters.

    摘要翻译： 本发明涉及用于脱硫粗铁和钢熔体脱硫剂的脱硫剂，该脱硫剂是以含有氧化钙的碳化钙为基础的。 为此，由石灰和焦炭产生CaO含量在20至80重量％范围内的碳化钙/氧化钙/起始熔融混合物，并使其固化成块。 虽然固化块仍然具有超过400℃的平均温度，但是它被粉碎成尺寸小于150mm的颗粒材料。 接下来，将至少400℃的热粉碎材料与必需的一定量的氧化钙混合，使得所得混合物中的总含量相当于最终产品所需的CaO的总含量。 将整体充分混合并粉碎，将温度高于100℃的水分排除到尺寸小于10毫米的颗粒材料上。

    Desulfurization mixture and process for making it
    8.
    发明授权
    Desulfurization mixture and process for making it 失效
    脱硫混合物及其制备方法

    公开(公告)号：US4395282A

    公开(公告)日：1983-07-26

    申请号：US359228

    申请日：1982-03-18

    申请人： Albert Braun ,  Willi Portz ,  Georg Strauss ,  Hans-Martin Delhey

    发明人： Albert Braun ,  Willi Portz ,  Georg Strauss ,  Hans-Martin Delhey

    IPC分类号： C21C1/02 ,  C21C7/064 ,  C21C7/076

    CPC分类号： C21C7/0645 ,  C21C1/025

    摘要： The disclosure provides mixtures for the desulfurization of metal melts, especially steel and crude iron melts, based on CaC.sub.2 --CaO-crystal blends produced in the fused mass. More specifically, the mixtures contain free carbon and carbonate and have a portion of the CaO in the CaC.sub.2 --CaO-crystal blend hydrated to Ca(OH).sub.2. The disclosure also relates to a process for making the mixtures.

    摘要翻译： 本公开提供了基于在熔融体中产生的CaC 2-CaO-晶体共混物的金属熔体，特别是钢和粗铁熔体的脱硫的混合物。 更具体地说，这些混合物含有游离碳和碳酸盐，并且CaC 2 -C CaO-晶体掺合物中的CaO的一部分水合成Ca（OH）2。 本公开还涉及制备混合物的方法。