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　　用于配(pei)重(zhong)(zhong)或(huo)壓重(zhong)(zhong)用的(de)鐵(tie)砂(sha)、鐵(tie)礦(kuang)砂(sha);一般鐵(tie)砂(sha)比(bi)重(zhong)(zhong)為(wei)4.2—7.2(堆(dui)積密度2.5—4.8)之間,客戶都(dou)是以(yi)排水密度(真比(bi)重(zhong)(zhong)即排水密度)來講.不同的(de)配(pei)重(zhong)(zhong)產品需要不同比(bi)重(zhong)(zhong)的(de)配(pei)重(zhong)(zhong)鐵(tie)砂(sha)