| 摘要 |
A method for making surface-coated reduced iron includes the step of coating the surface of reduced iron with a tar emulsion. Preferably, the tar emulsion includes at least one hydrocarbon-based material selected from the group consisting of natural petroleum tar, coal tar, pitch, asphalt, liquefied coal, and residual oil from petroleum refining; a surfactant; and water. More preferably, the tar emulsion contains 60 to 80 percent by mass of the hydrocarbon-based material, 0.1 to 1 percent by mass of the surfactant, and the balance being substantially water.
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