| 摘要 |
Process for disposing of clay, shale or sand containing earth contaminated with petroleum products from a variety of remediation sites is disclosed. The surrounding contaminated earth to be remediated is first excavated. Then, any clay or shale which is present is separated from the other materials and transported to a site of a cement plant. The non-clay or non-shale material is disposed of in a non-hazardous landfill. At the cement plant, the clay or shale is mixed with other cement precursor raw materials and the mixture is ground to form a cement feed mix. The feed mix is introduced into a rotary cement kiln causing any remaining petroleum product contained therein to be volatilized and burned within the kiln as the cement clinker is formed. The clinker is then ground for the purpose of forming cement free of petroleum product.
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