| 摘要 |
PURPOSE:To obtain a soil modifying fertilizer by forcedly passing a slag wool through the mesh of a punched steel plate while strongly pressing to give a calcium silicate fertilizer a soil modifying property by using a blast furnace slag as a raw material. CONSTITUTION:The slag wool made of the blast furnace slag as it is or cut and broken is forcedly passed through the punched steel plate 3 (e.g. hole of about 4mm is provided on a cylinder) while strongly pressing. As a result, the granulated soil modifying fertilizer is obtained. |
