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鲕(以下均用拼音字母er代替)er状赤铁矿是我国重要铁矿资源之一。它虽然一般储量不大,但分布较广,可做为中小型矿床来开采。er状赤铁矿是一种原生的沉积矿,一般品位比较高(40～50％Fe)。在过去高炉炼铁对入炉原料要求较低的情况下,这种矿石往往做为富矿处理,开采出的矿石不经过选矿直接入炉冶烁。现在,高炉的利用系数不断提高,焦比不断降低,因而高炉对入炉原料的品位不断提出更高的要求。目前,er状赤铁矿,不进行选别难以达到高炉对入炉原料的品位要求。 er状赤铁矿由于其结构、构适上的特点,是一种极为难选的矿石。首先,如欲使这
Oolong (the following are used in pinyin letter er instead of) er-like hematite is one of China’s important iron ore resources. Although it is generally small reserves, but widely distributed, can be used as small and medium deposits to mining. Er-like hematite is a native sedimentary deposit, the general grade is relatively high (40 ~ 50% Fe). In the past blast furnace ironmaking raw materials into the lower requirements of the case, the ore is often treated as a rich ore, ore mining directly after the ore without dressing Mercury. Now, the utilization factor of the blast furnace continues to improve, the coke ratio continues to decrease, so the blast furnace continuously puts forward higher requirements on the quality of the raw material into the furnace. At present, er-like hematite, without sorting difficult to achieve blast furnace into the furnace raw material grade requirements. Er-like hematite is an extremely difficult ore because of its structure and structure. First of all, if you want to make it