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硫酸厂黄铁矿渣综合利用,全国各单位均在进行试验研究,并已炼出各种铸铁及有色金属。本刊前期曾作了调查情况报道,目前已有些厂以黄铁矿渣直接进行磁选烧结高炉冶炼制出合格的铸铁,可磁选出的四氧化三铁曾达60～70%,使高炉焦比下降为1～1.2。现就硫酸生产过程同时制出高磁性黄铁矿渣,进行讨论与说明。一般硫酸厂黄铁矿焙烧常将用过量的空气,使烧渣及粉尘中的铁成为三氧化二铁红粉。如正确控制空气送入量及黄铁矿投料量,按照二硫化铁一克分子,对8/3克分子量
Sulfuric acid plant comprehensive utilization of pyrite slag, all units are conducting experimental studies, and has refined a variety of cast iron and non-ferrous metals. The magazine had made investigation of the situation reported that at present there are some plants to pyrite slag direct blast furnace blast furnace smelting qualified cast iron can be magnetically selected ferrosilicon has reached 60 ~ 70%, so that the blast furnace Coke ratio decreased to 1 ~ 1.2. At the same time on the sulfuric acid production process at the same time made of high magnetic pyrite slag, for discussion and description. General sulfuric acid plant pyrite roasting will often use excess air, the cinders and dust in the iron as iron oxide red powder. Such as the correct control of air delivery and pyrite feed capacity, according to one mole of iron disulfide, 8/3 grams of molecular weight