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一、前言 近年来,从风口向高炉炉内喷入煤粉已日益引起钢铁厂的重视。日本川崎钢铁公司千叶钢厂5号高炉新建了技术先进的煤粉喷吹设备PCI(Pulve-rized Coal Injection),于1984年10月投产。该设备采用气体将煤粉输送至高炉风口,因是气固二相流气力输送,故仪表控制技术起着十分重要的作用。 这套设备不仅能够喷吹煤粉,而且还能单独或混合喷吹铁矿石粉、石灰粉等粉体,此外,也能用
First, the foreword In recent years, from the tuyere blast furnace injection of pulverized coal has been caused by the steel plant’s attention. Japan’s Kawasaki Steel Corporation Chiba No. 5 blast furnace new coal-fired PCI advanced technology equipment PCI (Pulverized Coal Injection), put into operation in October 1984. The device uses gas to send coal to the blast furnace tuyere, because of gas-solid two-phase pneumatic conveying, so instrumentation control technology plays a very important role. This set of equipment not only can spray pulverized coal, but also can be used alone or mixed with iron ore powder, lime powder and other powder, in addition, can also be used