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首页> 外文期刊>Bulletin of Environmental Contamination and Toxicology >Hazard assessment to workers of trace metal content in pyrite cinders
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Hazard assessment to workers of trace metal content in pyrite cinders

机译：对工人进行硫铁矿烧渣中微量金属含量的危害评估

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摘要

Pyrite ores (FeS_2), and mixed sulfides (PbS, ZnS, CuFeS_2), played a significant role in the mining activities of Colline Metallifere (Southern Tuscany, Italy). At the start of the 20 century a plant located near Scarlino (Grosseto, Italy) began to use these law materials in the production of sulfmic acid. The manufacturing processes for sulfuric acid included a roasting step where, at a temperature of 900 deg, sulfides dissociated into a solid fraction (cinder waste) and into a gaseous fraction (SO_2). Then the SO_2 was heated at 200 deg to form SO_3 and subsequently H_2SO_4. Up to 1994, the Scailino plant had been processed up about 2,500 t/d of mixed sulfides and pyrite, and related iron-enriched wastes had been partially used in the metalluigic industry for the iron pellets production: such past plant's activities (currently, elemental sulfur is utilized for sulfuric acid production) generated a heap of now stocked inside the plant's industrial perimeter.
机译：黄铁矿（FeS_2）和混合硫化物（PbS，ZnS，CuFeS_2）在Colline Metallifere（意大利南部托斯卡纳）的采矿活动中发挥了重要作用。 20世纪初，位于斯卡利诺（意大利格罗塞托）附近的一家工厂开始在硫酸生产中使用这些法律材料。硫酸的制造过程包括焙烧步骤，其中在900摄氏度的温度下，硫化物分解为固体馏分（渣渣）和气态馏分（SO_2）。然后将SO_2在200℃下加热以形成SO_3，随后形成H_2SO_4。到1994年，斯凯利诺工厂已处理了约2500吨/天的硫化物和黄铁矿混合品，相关的富铁废物已部分用于冶金工业，用于铁丸的生产：这种过去的工厂活动（目前是硫用于硫酸生产），现在在工厂的工业范围内储备了一大堆。

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