减少高炉风口小套破损实践

PRACTICE TO REDUCE DAMAGE OF TUYERE SMALL SLEEVE

唐山国丰钢铁有限公司第二炼铁厂针对炉役后期风口小套破损严重、导致频繁休风的问题,分析了风口小套烧损的类型及损坏机理,采取适当提高炉温、加强原燃料的筛分、发展中心气流与控制边缘气流等措施后,风口小套烧损数量明显减少。

To solve the serious damage of tuyere small sleeve and caused frequently delay during the later pe- riod of blast furnace compaign, the type and mechanism of burning damage of the sleeve are analyzed. With measures adopted： appropriately raising furnace temperature, strengthening screening of raw and fuel materi- als, developing central air flow and controlling marginal air flow, the damage obviously reduced.