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    • 4. 发明专利
    • Treatment of coolant for cold rolling of steel
    • 钢的冷轧冷却剂的处理
    • JPS59115717A
    • 1984-07-04
    • JP23227482
    • 1982-12-24
    • Daido Steel Co Ltd
    • YANO JIYUNICHIOOTA MASAHIROMATSUSHIMA HIROSHIKOIKE TAKASHI
    • B21B45/02B01D35/06B03C1/032
    • B03C1/032B21B45/0293Y02P70/133
    • PURPOSE:To improve the removing rate of iron component, and to restrain the amount of oil component to be discharged out of the system together with the iron component, by treating a coolant used already in cold rolling of steel material with the aid of an electromagnetic filter, and backwashing the captured iron component, etc. and separating the after backwashing water by centrifuging. CONSTITUTION:A coolant 2 used already in a cold rolling plant 1 of steel is once stored in a tank 3, and the residual part of the coolant 2 is fed to an electromagnetic filter 7 through a valve 6 while returning a part of the coolant 2 as it is to the plant 1 through a valve 5. The residual coolant 2 is magnetically separated at the filter 7 and is used again by circulating it to the plant 1 through a valve 8. The filter 7 is constituted of a vessel 7a having an opening and an exciting coil 7e provided to the outside of the vessel 7a; a laminated filter part 7d, composed of a fine magnetic wire 7c which is held between upper and lower pole pieces 7b, is housed in the vessel 7a. Iron component, etc. captured by the part 7d is backwashed with steam or a pressurized air, etc. at a fixed intervals of time in a separated system consisting of a valve 9, a filter 7, and a valve 10, and the water after backwashing 11 stored once in a tank 12 is fed to a centrifugal 14 to separate it into sludge and the treated water.
    • 目的:为了提高铁成分的去除率,并且通过在电磁铁的帮助下处理已经在钢材冷轧中使用的冷却剂来限制与铁成分一起排出系统的油成分的量 过滤和回洗所捕获的铁组分等,并通过离心分离后反冲洗水。 构成:已经在钢的冷轧设备1中使用的冷却剂2曾经存储在罐3中,并且冷却剂2的剩余部分通过阀6被供给到电磁过滤器7,同时返回一部分冷却剂2 就像在工厂1中通过阀门5一样。剩余冷却剂2在过滤器7处被磁分离,并且通过阀8将其循环到设备1中再次使用。过滤器7由具有 开口和设置在容器7a外部的励磁线圈7e; 由保持在上下极靴7b之间的细小的电线7c构成的层叠过滤器部7d容纳在容器7a中。 由部件7d捕获的铁成分等以蒸汽或加压空气等在由阀9,过滤器7和阀10组成的分离系统中以固定的时间间隔反冲洗, 储存在罐12中的反冲洗11被送入离心机14,将其分离成污泥和处理过的水。