青海快3

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铬铁合金厂固体废弃物跳汰回收处理效果

责任编辑:巩义三久 发表时间:2016-06-19 16:15

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  世界上很多国家对固体废弃物中六价铬含量的限制也相当严格,以防止固体废弃物中盐类或有害物质浸出,造成土壤碱化和地下水污染。因此,回收利用铬铁合金厂固体废弃物青海快3对资源利用和环境保护都具有重要意义。

  从外观上看,高碳铬铁渣呈灰黑色,部分工厂产生的渣呈暗绿色和铁锈红色,其质地坚硬,抗压强度在100-200MPa之间,破碎起来十分困难。 有研究表明,该渣经水浸后易于粉碎,其堆密度约为1.2-1.7mg/cm³,密度为2.35kg/m³。铬铁合金烟尘一般分为粗烟尘和细烟尘两类,由旋 风除尘器收集的烟尘颗粒尺寸较大,呈黑色。而由布袋除尘器捕集的烟尘呈浅灰色,颗粒细小,极易凝聚成团。铬铁合金细烟尘的平均粒度在0.7-13.2μm 之间,水分含量较低(约为1%),比表面积很大,当其浸入水中时呈碱性。此外,由于细烟尘中含可溶性盐类,遇水即部分溶解,这意味着堆放或填埋这些烟尘会 导致土壤碱化。和细烟尘相比,粗烟尘的平均粒度大约为80μm,水分含量更低,浸人水中时呈强碱性。