A PRODUCTION SYSTEM OF LOW-ALKALI RECYCLED AGGREGATE

摘要

PURPOSE: A device for producing low-alkali recycled aggregates is provided to prevent leaching water from having a strong alkali property when recycled aggregates contact water for a long time, thereby preventing environment contamination. CONSTITUTION: A device for producing low-alkali recycled aggregates comprises the following units. An automatic sulfuric acid solution supply device supplies sulfuric acid solution of fixed concentration to generate a gypsum component by making a lime component of separated aggregates react with sulfuric acid solution. A reaction tub(200) is depressed downward so that sulfuric acid solution supplied from the automatic sulfuric acid solution supply device is filled in the reaction tub. A transfer conveyor(300) transfers separate aggregates. A screw(420) is installed in a support. A control handle(430) is connected to the top of the screw to rotate the screw. A roller(440) is connected to a lower end of the screw.