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    • 24. 发明申请
    • STEEL PRODUCTION WITHOUT PLANT-SITE CARBON DIOXIDE EMISSION
    • 钢生产,无植物二氧化碳排放
    • WO2018083433A1
    • 2018-05-11
    • PCT/GB2017/000149
    • 2017-10-14
    • WARNER, Noel A.
    • WARNER, Noel A.
    • C21C5/56C21C7/10F27B3/02F27B3/04F27D7/06F27D11/04
    • C21C7/10C21C5/562F27B3/02F27B3/04F27D7/06F27D11/04Y02P10/216
    • Use of an electric arc furnace (EAF) with graphite electrodes is incompatible with zero CO 2 emission. EAF usage is challenged by proposed new technology employing generic melt circulation, in which no plant - site carbon dioxide is emitted during scrap melting and subsequent continuous refining. The electrical input is estimated to be less than 150kWh/tonne for processing shredded scrap to near net shape product. For continuous steelmaking from contaminated scrap, zinc elimination at atmospheric pressure is straightforward. For copper and tin desorption from contaminated molten steel scrap, continuous, evaporation under vacuum, paralleling the commercially established vacuum dezincing of the molten lead carrier medium in the melt circulation loop attached to the condenser of a former UK zinc-lead blast furnace is strongly advocated. A case is made for water cooling in final steel product continuous casting to be replaced by heat recovery employing a liquid metal coolant.
    • 使用具有石墨电极的电弧炉(EAF)与零CO 2排放不相容。 电弧炉的使用受到采用通用熔体循环的新技术的挑战,其中在废钢熔炼和随后的连续精炼过程中不会排放工厂现场的二氧化碳。 据估计,用于处理碎废钢至近净成型产品的电气输入量低于150千瓦时/吨。 对于污染废钢的连续炼钢,大气压下的锌清除非常简单。 对于来自受污染的废钢的铜和锡解吸,在真空下连续蒸发,与在英国前锌铅高炉的冷凝器附近的熔体循环回路中商业上建立的熔融铅载体介质的真空脱锌并列 。 一种情况是在最终钢材连铸中用水冷来替代采用液体金属冷却剂的热回收。
    • 25. 发明申请
    • RESISTANCE ANNEALING FURNACE FOR ANNEALING A METAL WIRE, STRAND, STRING, WIRE ROD OR STRAP
    • 电阻退火炉,用于退火金属线,STRAND,STRING,线或条
    • WO2015063749A3
    • 2015-07-23
    • PCT/IB2014065798
    • 2014-11-04
    • SAMP SPA CON UNICO SOCIO
    • AFFATICATI ARTEMIOCONTE ROBETO
    • C21D9/56C21D9/62F27D11/04F27D19/00H05B3/00
    • C21D9/525C21D9/56C21D9/563C21D9/62F27D11/04F27D19/00H05B3/0009
    • A resistance annealing furnace for annealing a metal wire, strand, string, wire rod or strap having at least two electric axes (5-7) provided with respective pulleys (8-10) to convey the metal wire (2) and a DC voltage generator (14) suppliable with an AC voltage (Uac) to generate an annealing voltage (Uann) applied between the two electric axes (5-7) so as to provoke the annealing due to Joule effect. The DC voltage generator (14) has active supplying means (19) supplied with the AC voltage (Uac) so as to generate an intermediate DC voltage (Udc), a pulse width modulator (20) to transform the intermediate voltage (Udc) into a first PWM voltage (Um1) with the same amplitude, a voltage transformer (21) to transform the first PWM voltage (Um1) into a second PWM voltage (Um2) with a smaller amplitude, and a voltage rectifier stage (22) to transform the second PWM voltage (Um2) into the annealing voltage (Uann).
    • 一种用于对具有至少两个电轴(5-7)的金属线,线,线,线材或带的退火的电阻退火炉,所述至少两个电轴(5-7)设置有相应的带轮(8-10)以输送金属线(2)和直流电压 发生器(14),其供应有AC电压(Uac)以产生施加在两个电轴(5-7)之间的退火电压(Uann),以引起由于焦耳效应引起的退火。 直流电压发生器(14)具有提供有交流电压(Uac)的有源供电装置(19),以便产生中间直流电压(Udc),脉冲宽度调制器(20)将中间电压(Udc)变换成 具有相同幅度的第一PWM电压(Um1),将第一PWM电压(Um1)变换为具有较小振幅的第二PWM电压(Um2)的电压互感器(21)和用于转换的电压整流器级(22) 第二个PWM电压(Um2)变为退火电压(Uann)。