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帕帕切克先生的文章简要地介绍了原料准备及高炉冶炼技术发展过程。选矿技术着重介绍了利比利亚波恩采矿公司的选矿流程。它的原矿含铁36～39％,在初碎以后混匀、进行中碎与磨矿(采用湿法自磨),因为磁铁矿只有23～30％,其余为赤铁矿(且这部份矿物较粗),因此采用重选—磁选—浮选结合。第一步磨不过细,经螺旋重选,得到精矿作为烧结原料。第二步采用湿法弱磁选(细筛再磨),处理螺旋机后的尾矿。精矿再磨,经浮选后的铁精矿适用于生产球团。根据多年生产实践,建造原矿混料场和原料充分混匀对保证选矿工艺及原料质量具有十分重要意义。帕帕切克先生介绍了带式焙烧机与链篦机——回转窑的优缺点。根据生产实践,圆筒造球机比圆盘机好。造球中使用皂土作为粘结剂效果最好。改进烧结矿质量的主要措施是:混匀、厚料层烧结、延长点火器、在烧结料中配加橄榄岩等。而烧结料的物理与化学均匀性是保证烧结矿质量的最重要条件。在高炉生产方面介绍了联邦德国蒂森公司的情况,指出高炉技术的发展方向:(1)大型化,但应根据具体情况而定;(2)进一步改善原料准备,如整粒、加入粒度波动范围少的球团、在球团和烧结矿中加入橄榄岩等;(3)观察高炉软化区形状;(4)喷煤粉;(5)回收高炉废热等。
Mr. Papacher’s article gives a brief introduction to the preparation of raw materials and the development of blast furnace smelting technology. Beneficiation technology highlights the beneficiation process at the Bonn mining company in Liberia. Its raw ore contains 36-39% of iron. After initial crushing, it is mixed and ground and ground (using wet self-grinding) because the magnetite is only 23-30% and the rest is hematite (and this Part of the coarse ore), so the use of re-election - magnetic separation - flotation combination. The first step is not too fine mill, the spiral re-election, get concentrate as a sintering raw material. The second step using wet weak magnetic separation (fine sieve regrinding), after processing spiral tailings. Concentrate and then grinding, after the flotation of iron concentrate for the production of pellets. According to years of production practice, it is of great significance to construct a raw material mixing plant and fully mix the raw materials to ensure the beneficiation process and raw material quality. Mr. Papacher introduced the advantages and disadvantages of belt roasters and grate-rotary kilns. According to the production practice, cylindrical pelletizing machines are better than disk machines. The use of bentonite as a binder in pelleting works best. The main measures to improve the quality of sinter are: mixing, thick material layer sintering, to extend the igniter, in the sintering material with peridotite and so on. The sintering of the physical and chemical uniformity is to ensure the quality of sinter the most important condition. Introduced the situation of the German Thyssen Company in blast furnace production, pointed out that the development direction of blast furnace technology: (1) large-scale, but should be based on the specific circumstances; (2) to further improve the raw material preparation, such as whole grain, adding granularity fluctuation A small range of pellets, pellets and sinter into the peridotite, etc .; (3) to observe the shape of the blast furnace softening zone; (4) pulverized coal injection; (5) blast furnace waste heat recovery.