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斜坡炉是高温处理粉状散料体的一种工业新炉型。为了解决赤铁矿粉的磁化(还原)焙烧问题,从1969年起我们着手做模型试验和小型还原焙烧试验,1970年9月设计建成处理能力为5吨/时·台的工业试验炉和与之配套生产的小选厂。经不断调试改进,解决了一系列技术难题,1972年6月正常连续生产,各项技术经济指标稳步上升,截至1975年初,炉子累计运转时间一万小时以上,平均产量5～7吨/时台,热耗40万大卡/吨以下,矿石还原度(FeO/Fe)36～48％。庞家堡鲕状矿焙烧后的磁选指标为:精矿品位60％,金属回收率80％,达到国内同类矿选矿的先进水平。为此,冶金部委托河北省冶金局主持召开斜坡炉鉴定会,认
Slope furnace is a high temperature industrial processing of powder bulk body of a new type of furnace. In order to solve the problem of magnetization (reduction) roasting of hematite powder, we started to make model tests and small reduction roasting tests from 1969. In September 1970, we designed and built an industrial test furnace with a processing capacity of 5 t / The supporting small production plant. After continuous debugging and improvement, a series of technical problems were solved. Normal continuous production was carried out in June 1972 and various technical and economic indicators increased steadily. As of the beginning of 1975, the accumulated operation time of the stove was over 10,000 hours with an average output of 5 to 7 tons / hour , Heat consumption 400000 kcal / ton, ore reduction (FeO / Fe) 36 ~ 48%. The magnetic separation indexes after calcination of Pangjiabao oolitic ore are as follows: concentrate grade is 60% and metal recovery rate is 80%, reaching the advanced level of the same kind of ore dressing in China. To this end, the Metallurgical Department commissioned the Metallurgical Bureau of Hebei Province presided over the slope furnace appraisal will recognize