Drying furnace using waste heat of the firing process in the manufacture of high-strength mortar sand as a firing process and the recycling of sludge generated during the manufacturing process as a cement raw material

摘要

The present invention relates to a drying furnace using waste heat from the firing process in manufacturing sand for high-strength mortar through the firing process and recycling the sludge generated in the manufacturing process as an auxiliary material for cement, and more particularly, converts waste concrete from construction waste into recycled aggregate. For high-strength mortar in the calcination process by drying sewage sludge and sludge with a moisture content of 70% or less by using the waste heat of the calcination process generated during the continuous calcination process, such as stone dust, aggregate, ores, which are by-products generated during recycling or production of sandstone and aggregate. It relates to a drying furnace using waste heat from the calcination process to supply sand as fuel and raw material during manufacturing, to manufacture sand for high-strength mortar, and to recycle sludge generated during the manufacturing process as an auxiliary material for cement. The present invention provides recycled aggregates of 5 mm or less supplied from the raw material tank, domestic and industrial wastes crushed to a size of 25 mm, dried sewage sludge using waste heat from the kiln, and sludge with a moisture content of 70% or less in the process of supplying, pulverizing and transporting Including the primary rotary kiln kiln and secondary combustion furnace for firing, recycled aggregates of 5 mm or less supplied from each raw material tank, domestic and industrial wastes crushed into 25 mm size, and dried sewage sludge using waste heat from the kiln , In the process of calcining sludge having a moisture content of 70% or less and supplying it to a loader mill and a separator, supplying combustion chamber waste heat to the secondary combustion furnace to dry sewage sludge and sludge having a moisture content of 70% or less; installing a heat dissipation pipe connected to the combustion gas inlet pipe receiving the waste heat to provide drying heat, and then connecting the combustion gas exhaust pipe to the front end; It consists of a dry chamber tank in which a driving gear is installed in the outer diameter and a sewage sludge supply screw is connected to receive sewage sludge; The heat sink connected to the heat sink is installed at an interval of 50 to 200 mm in any one of round, oval, and long hole shapes, and is installed between the combustion gas inlet pipe and the combustion gas exhaust pipe, so that the total cross-sectional area of the combustion gas inlet pipe is equal to or It is characterized in that a plurality of larger heat dissipation tubes are formed and installed so as to be inclined upward from the center of the drying chamber tank.