| 摘要 |
An existing apparatus for reducing pH concentration of recycled aggregate and construction waste soil through dry ice has a Z shape at the bottom, can perform a pH reduction process only one time, has difficulty in mass production without a continuous process, and needs additional equipment in the continuous process, thereby increasing installation costs. In order to resolve problems that dry ice is not mixed well with recycled aggregate and construction waste soil and pH reduction rate of the recycled aggregate and construction waste is remarkably reduced, an apparatus for reducing pH concentration comprises: a rotary hopper (100); a sealed distributor (200), a pH mixer module (300) with the wide upper part and the narrow lower part, a polygonal aggregate container (400), a bucket elevator (500) for vertical transfer of aggregate, a dry ice generator (600), a horizontal transfer conveyor (700), and a micom part (800). The apparatus enables mass production of pH-reduced recycled aggregate and construction waste soil through a continuous process including vertical movement and distribution; distributes the recycled aggregate and construction waste soil to reduce pH concentration by the pH mixer module with the wide upper part and the narrow lower part, which has an empty space; reduces pH concentration of the recycled aggregate and the contruction waste soil by stirring reactants for neutralization several times to pH 8.6-9.8 or less, thereby improving pH reduction rate to 80%. |
