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In the process of roasting zinc; low melting point, easy to produce scarring phenomenon of roasting furnace.

碳：含量較多時，在焙燒過程中發(fā)熱很高，爐溫不易控制，還要消耗較多的氧，生成一氧化碳或二氧化碳，影響轉化。

Carbon: content of more, a high fever in the roasting process, temperature is not easy to control, but also consume more oxygen, to generate carbon monoxide and carbon dioxide effect of invert.

鈣、鎂碳酸鹽：硫鐵礦石中的鈣、鎂碳酸鹽脈石(白云石、方解石)使硫鐵礦在焙燒過程中分解出二氧化碳氣體，稀釋了爐氣中二氧化硫的濃度。同時，氧化鈣和氧化鎂還吸收部分二氧化硫形成硫酸鈣和硫酸鎂，降低了硫的利用率，使設備的生產能力下降。而且新形成的鈣、鎂硫酸鹽殘留在硫鐵礦石的燒渣中，影響綜合利用。

Calcium and magnesium carbonate: sulfur iron ore in the calcium and magnesium carbonate minerals (calcite and dolomite) make the pyrite in the roasting process of decomposition of carbon dioxide gas, dilution of the concentration of sulfur dioxide in the gas stove. At the same time, calcium oxide and magnesium oxide also absorb some of the sulfur dioxide to form calcium sulfate and magnesium sulfate, reducing the utilization of sulfur, so that the production capacity of the device decreased. And the new form of calcium, magnesium sulfate residues in the pyrite slag, the impact of comprehensive utilization.

在制造二硫化碳人造纖維時，硫鐵礦石中的瀝青和砷是有害雜質。

In the manufacture of carbon disulfide in man-made fiber, asphalt and sulfur in iron ores is harmful impurities.

在造紙工業(yè)中，制亞硫酸鹽紙漿的硫不能含硒，因為硒會使紙發(fā)黑。

In papermaking industry, sulfur can not sulfite pulp containing selenium, because selenium will make black paper.

在制造火柴和炸藥時，硫中不能含微量的二氧化硅雜質，因為二氧化硅會妨礙燃燒。

In the manufacture of matches and explosives, sulfur can not contain trace amounts of silicon dioxide impurities, because the silica will hinder the combustion.