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一、前言精料是高炉强化冶炼、实现高产优质低耗的物质基础。烧结矿在炉料中占主要地位,因此改善烧结矿的质量就成为“精料”的主要内容。近年来,国内外都十分重视提高烧结矿的品位,以利高炉节焦增铁。随着钢铁工业的发展,选矿技术的进步,我国的精矿品位在不断提高,由原全铁含量62～63％提高到67～68％,为提高烧结矿含铁品位提供了有利条件,使烧结矿的全铁含量由过去的50％左右提高到54～55％,为高炉精料作出了贡献。
First, the preamble Concentrate is the blast furnace to strengthen smelting, to achieve the material basis of high yield, high quality and low consumption. Sinter plays a major role in charging materials, so improving the quality of sinter becomes the main content of “concentrate”. In recent years, both at home and abroad attach great importance to improving the quality of sinter, to facilitate blast furnace section coke by iron. With the development of the iron and steel industry and the progress of beneficiation technology, the grade of concentrate in our country is continuously improving, increasing from 62-63% of the original total iron content to 67-68%, providing favorable conditions for improving the iron content in sinter, The total iron content of sinter increased from about 50% in the past to 54-55%, contributing to blast furnace concentrate.