摘要:
研究了表外钛精矿冶炼钛渣时硫的走向,硫在原料和产品中的存在形式。结果表明,冶炼过程原料中27.97%的硫进入铁相,35.74%的硫进入渣相,其余进入除尘灰和烟气中,钛渣中硫的含量为0.64%,半钢中硫的含量为1.2%,进一步利用受到影响。硫在表外钛精矿、钛渣和半钢中均以Fe S的形式存在,钛渣和半钢脱硫难度大、成本高,还会改变钛渣物相结构,影响后续应用效果,通过改变选矿工艺或预先氧化焙烧来降低钛精矿硫含量,可获得低硫钛渣和半钢。
关键词:
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表外钛精矿 /
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钛渣 /
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半钢 /
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硫 /
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走向
Abstract:
In this paper,the trend of sulfur in the process of titanium slag smelting and the form of sulfur in raw materials and products are studied. The results show that 27. 97% and 35. 74% of sulfur from the feedstock turned into metallic iron and slag phases,respectively; and the rest turned into precipitator dust and exhaust gas.The sulfur content of titanium slag and semi steel is 0.64% and 1.2%,Further comprehensive utilization is affected.The most of sulfur present as Fe S in raw materials and products.The desulphurization of titanium slag and semi steel is very difficult and cost high,it will also change the structure of titanium slag phase and influence the effect of subsequent application.In order to obtain low sulfur titanium slag and semi steel,the desulphurization treatment of titanium concentrate should be taken by changing process of ore dressing or oxidizing roasting before smelting of titanium slag.
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