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前言沉积型铁矿占我国铁矿石储量的15％,居各种类型铁矿石储量的第二位。其中宁乡式铁矿在我国南方分布十分广泛,多为中型或大型矿床。据初步统计,工业储量约占全国赤铁矿总储量的32％左右,为全国铁矿石总储量的8％。我们曾对宁乡式鲕状赤铁矿、綦江式菱铁矿—赤铁矿等进行了工艺矿物学研究,发现它们具有铁品位低、结构复杂、有害杂质含量高等特征,因而大部分未被充分利用。在本文中仅以宁乡式赤铁矿矿石的研究为例,说明该类型矿石的工艺矿物学特征与其利用途径的关系。宁乡式铁矿矿石被利用的主要铁矿物是赤铁矿,其原生粒度和嵌布粒度均较细,与
Preface Sedimentary iron ore accounts for 15% of China’s iron ore reserves, ranking second in all types of iron ore reserves. Ningxiang iron ore which is widely distributed in southern China, mostly medium or large deposits. According to preliminary statistics, industrial reserves account for about 32% of the total hematite reserves in the country, accounting for 8% of the total iron ore reserves in the country. We conducted a process mineralogy study on the Ningxiang oolitic hematite and the Qiangjiang siderite-hematite, and found that they have the characteristics of low iron grade, complex structure and high content of harmful impurities, and thus most have not been Take advantage of. In this paper, the study of Ningxiang-type hematite ore is taken as an example to illustrate the relationship between process mineralogy and its utilization of this type of ore. Ningxiang-type iron ore ore is the use of the main iron ore is hematite, its primary particle size and embedded grain size are fine, and