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由于引进外国新技术加以消化与创新,日本钢铁工业在世界上处于领先地位。现以冷却壁技术实例说明。20年来,日本高炉炉龄由6年左右提高到10年以上。(1985与1986年达10年以上),日本高炉平均炉龄示于表1。高炉内反应复杂,是长期连续运转的超高温、高压反应器,炉龄受设备与操作的影响。如设备方面要保持炉壳、炉衬、冷却装置等的正常状态,工艺操作也是保护设备不可欠缺的措施。导致高炉大修的主要原因有二,一是炉缸炉底严重损坏,二是炉身下部
As the introduction of new foreign technologies to digest and innovate, the Japanese steel industry in the world in a leading position. Now the example of cooling wall technology. In the past 20 years, the blast furnace age in Japan has been raised from 6 years to over 10 years. (1985 and 1986 for more than 10 years), the average blast furnace age in Japan shown in Table 1. The reaction in the blast furnace is complex, and it is an ultra-high temperature and high pressure reactor which is continuously operated for a long time. The furnace age is affected by equipment and operation. Such as equipment to keep the furnace shell, lining, cooling devices, such as the normal state, process operation is also an indispensable measure to protect equipment. The main reasons leading to blast furnace overhauls are two, one hearth furnace bottom serious damage, the second is the lower part of the shaft