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近年来,国外已有很多国家研究与发展了球团矿生产。我国从1957年开始,进行了大量的研究工作。并于1958～1959年相继将一部分方团矿焙烧窑改建成隧道式球团矿焙烧炉。为改善与提高球团矿的技术经济指标,我们对以下几个主要问题进行了研究与探时。一、球团矿生产的原料准备(一)熔剂的种类1.消石灰适宜用量:在碱度1.0以下时,全用消石灰(20%以下)代替1-0毫米石灰石粉作熔剂,其生球粒度、强度、产品强度等指标均好,且生产率高。当消石灰用量超过10%以上效果减轻。这主要是消石灰亲水性、粘结性好及焙烧时分解所消耗的热量少所致。但消石灰用量过多,
In recent years, many countries abroad have studied and developed pellet production. Since 1957, our country has conducted a great deal of research work. And in 1958 ~ 1959 one after another part of the group ore roasting kiln converted into tunnel-type pellet roaster. In order to improve and enhance the technical and economic indicators of pellets, we conducted research and exploration on the following major issues. First, the pellet production of raw materials preparation (A) the type of flux 1. The appropriate amount of hydrated lime: Alkalinity below 1.0, the whole with hydrated lime (20% or less) instead of 1-0 mm limestone powder as a flux, the ball size , Strength, product strength and other indicators are good, and high productivity. When the amount of slaked lime more than 10% reduced the effect. This is mainly due to the hydrophilicity of hydrated lime, good cohesion and less calorific consumption during calcination. However, excessive consumption of lime,