System equipment and method for dehydrating and drying ardealite by high-temperature waste heat of regenerated aggregate

Abstract

The invention discloses system equipment and method for dehydrating and drying ardealite by high-temperature waste heat of regenerated aggregate. The system equipment comprises a drying box body and a waste heat recovery device, a telescopic air cylinder is fixedly installed on the side, away from a supporting plate, of a transmission rod, one end of the top of the drying box body is connected with an air heater through a pipeline, and a filter screen is fixedly installed in a moving frame. A driving rod is sleeved with the mounting frame, first cams are fixedly mounted at the two ends of the exterior of the driving rod, second cams are fixedly mounted at the two ends of the exterior of the driving rod, a driving motor is fixedly mounted on the side, away from the drying box body, of the driving rod, and a reset spring is fixedly mounted on one side of the inner wall of a hollow plate. The drying box body and the waste heat recovery device are connected through a ventilation pipe, heat recovered in the waste heat recovery device for regenerating aggregates is introduced into the drying box body, and ardealite in the drying box body is dehydrated and dried by utilizing the recovered waste heat, so that the effect of saving energy is achieved, the energy is fully utilized, and the power consumption of production is reduced.

Description

technical field [0001] The invention belongs to the technical field of dehydration and drying of phosphogypsum, and in particular relates to a system equipment and method for dehydrating and drying phosphogypsum with high-temperature waste heat of recycled aggregates. Background technique [0002] Phosphogypsum is mainly gray-black and gray-white. Phosphogypsum is a solid waste produced in the wet process phosphoric acid process, and its main component is calcium sulfate dihydrate. The composition of phosphogypsum is relatively complex. In addition to calcium sulfate, there are incompletely decomposed phosphate rock, residual phosphoric acid, fluoride, acid insoluble matter, organic matter, etc., among which the existence of fluorine and organic matter has the greatest impact on the resource utilization of phosphogypsum , on the basis of ensuring that the requirements of the process conditions are met, improving the thermal efficiency of these thermal equipment is the key t...

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Problems solved by technology

[0004] The object of the present invention is a system equipment and method for drying phosphogypsum with high-temperature waste heat dehydration of regenerated aggregates, to solve the problem that the existing phosphogypsum drying device proposed in the above-mentioned background technology is not used in the process of use. Waste heat is used for drying treatment, and the moisture contained in phosphogypsum is not filtered before drying, resulting in more energy consumption and low drying efficiency

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