硼精粉挤压成形焙烧技术分析  

Analysis on boron ore concentrate powder press forming roasting technology

作　　者：吴学英 潘晓杰 

机构地区：[1]凤城市环境监测站,辽宁凤城118100

出　　处：《无机盐工业》2008年第2期36-37,59,共3页Inorganic Chemicals Industry

摘　　要：辽宁凤城地区的硼镁铁矿属低铁低硼的贫杂矿,三氧化二硼质量分数仅7.90%,三氧化二铁质量分数仅30.65%。因此以硼镁铁矿为原料生产硼酸盐产品,常常是先选出铁精矿后,含硼尾矿再加工成粉状硼精矿。而碱法加工硼矿石生产硼砂,必须对硼矿石进行焙烧,以提高三氧化二硼的活性。目前硼精粉的焙烧尚无工业化装置,多数企业将其弃之外排,造成了资源的大量浪费和环境污染。介绍了硼精粉的生产现状;对沸腾焙烧、回转窑焙烧、闪速焙烧和机械化立窑焙烧进行简评;重点介绍了硼精粉挤压成形焙烧技术。立窑焙烧不仅提高硼的活性,而且运行成本低,投资少、见效快,值得推广。The ludwigite in Fengcheng of Liaoning Province belongs to low - iron and low - boron low - grade mixed ore. Its mass fraction of boric oxide is just 7.90% and ferric oxide is only 30.65%. Therefore, iron ore concentrate was usually separated at first, and then boron - containing tailings was processed into boron ore concentrate powder when using ludwigite as raw material to produce borate products. However, if using boron mineral to produce borax by alkali method, it must be roasted so as to increase the activity of boric oxide. So far, there is not any industrial plant for boron ore concentrate powder roasting. Most of the enterprises just throw it away, which cause big waste and environmental pollution. In this paper, the present production status of boron ore concentrate powder was introduced ; boiling - bed roasting, rotary kiln roasting, flash roasting and mechanical shaft kiln roasting were briefly described;and boron ore concentrate powder press forming roasting technology was introduced in detail. Shaft kiln roasting not only increases the activity of boron, but also has the advantages of low running cost, small investment and quick returns etc.. So it is worth popularizing.

关 键 词：硼精粉 挤压成形 焙烧 机械化立窑 活性 

分 类 号：TQ128.1[化学工程—无机化工]