| 摘要 |
<p>Production of high density counterweights comprises the bulk reception of scale, exposure of the scale to free air to eliminate water, mixing the scale with other components, transferring the mixture into molds subjected to high frequency vibrations, introducing and maintaining the molded pieces in a setting tunnel for a predetermined time at a controlled humidity, piling and air-drying the pieces and then stocking the pieces before dispatch. Preferred Features: The mixture used to fabricate the counterweights comprises rolling cement mill scale or blast furnace residues, gravel, water and chemical additives.</p> |
