Efficient recycling device and process for hollow particles in ash residues in ash storing yard and storage yard of power station

Abstract

The invention relates to an efficient recycling device and process for hollow particles in ash residues in an ash storing yard and a storage yard of a power station. The device comprises a crusher, a screw feeder, a mortar stirring tank, a water cement ratio monitoring-feedback-control system, a buffering water tank, a circulating water pump and an ash yard water return pipeline, wherein purifying-grading-upgrading devices are connected to a collection tank and a water return tank. The process comprises the following steps: (1) crushing the ash residues in the ash storing yard and the storage yard of the power station, mixing the ash residues with returned water; (2) carrying out concentration stabilization on high-concentration grout; (3) conveying the high-concentration grout to a distribution-collection tank through a slurry pump and a manual regulating valve; (4) enabling overflow water and bled water in a dewatering bin to automatically flow into a concentrator; (5) enabling a mixture of floating bead particles and water in the collection tank to pass through the purifying-grading-upgrading devices; (6) enabling the overflow water in the concentrator to automatically flow into the buffering water tank; (7) enabling high-concentration residue slurry discharged from the bottoms of the concentrator and the buffering water tank to continuously enter the dewatering bin to be recycled. According to the efficient recycling device and process, the comprehensive utilization level of the ash residues in the storage yard is effectively improved.

Description

technical field [0001] The invention relates to a high-efficiency recovery device and a recovery process for hollow particles, in particular to a high-efficiency recovery device and a recovery process for hollow particles in a power station ash storage yard. Background technique [0002] Fly ash and slag are by-products of thermal power plants. The amount of fly ash produced in my country is huge every year, and the comprehensive utilization rate is low. A large amount of fly ash is accumulated in the ash yard, which not only occupies a large amount of arable land but also pollutes the environment. Therefore, the realization of pulverized coal The comprehensive utilization of gray resources has become an important technical and economic policy in my country's economic construction. It is an important means to solve the contradiction between environmental pollution and resource shortage in my country's electric power production. It is also one of the main tasks that the thermal...

AI Technical Summary

Problems solved by technology

Since the power plant fly ash is humidified, stirred and rolled during the stacking process, and long-term stacking will cause serious ash compaction and other problems, it is difficult to realize continuous and efficient recovery of the hollow particles of the stacking yard on the spot

[0006] To sum up, there is still no ash storage yard ash in

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