| 摘要 |
<p>PURPOSE:To utilize effectively waste as a material substituting for pig iron by mixing shavings of an iron material as a principal component with waste dust such as scraps of a silicon carbide grindstone or graphite powder and by molding the mixture. CONSTITUTION:Shavings produced by cutting an iron material such as cast iron or steel are crushed to <= about 20mm. with a crusher or the like. The crushed shavings as a principal component are mixed with >=1 kind of waste dust such as scraps of a silicon carbide grindstone, graphite powder, coke breeze, dust collected in an electric furnace or collected silicon dust. The waste dust is pulverized to a grain size equal to that of the powder of the shavings before the mixing. <= About 1% org. or inorg. binder is added to the mixture, and the mixture is molded into a spherical shape or the like, dried, and calcined or sintered.</p> |
