A joint disposal method of full tail paste filling and stockpiling based on deep cone thickener

Abstract

The invention relates to a total-tailings paste filling and stockpiling combined treatment method based on a deep-cone thickener. A combined treatment system is composed of a one-stage or multi-stage pump station, the deep-cone thickener and a two-segment horizontal stirring device. The deep-cone thickener is arranged near the multi-stage pump station. A continuous feeding and discharging mode is adopted for achieving the continuous concentration process, and the two functions of filling and tailings stockpiling are both taken into consideration. In the running process of a filling system, total tailings of a concentration plant are completely thrown into the deep-cone thickener through the one-stage or multi-stage pump station. When filling is needed, deep-cone bottom flow is pumped to the two-segment stirrer through a mortar pump and is mixed with cement, and qualified paste is prepared and flows to or is pumped to a stope. When filling is not needed, the bottom flow is pumped by a plunger pump to a tailings pond by means of the pump station, and stockpiling of paste is performed. The method can well solve the filling problem of a gob and the stockpiling problem of tailings at the same time, filling cost is greatly reduced, the strength of filling bodies is improved, discharge of the tailings is reduced to the maximum extent, and meanwhile tailings paste is discharged.

Description

technical field [0001] The invention relates to the technical field of tailings paste treatment, in particular to a method for combined disposal of tailings paste filling and stockpiling based on a deep cone thickener. Background technique [0002] In 2012, the State Administration of Work Safety and other five ministries and commissions clearly stipulated in the "Guiding Opinions on Further Strengthening the Supervision and Management of Tailings Ponds" that new metal and non-metallic underground mines must demonstrate whether the filling mining method can be used, and give priority to implementation Fill mining method. Under this condition, the application proportion of filling mining method in mines is increasing continuously, and its technology has also been developed rapidly in recent years. [0003] With the application and development of backfill mining technology, low-concentration graded tailings cemented backfill can no longer meet the safety, environmental protec...

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Problems solved by technology

Field practice has also proved that low-concentration filling slurry will cause a series of problems such as clogging of retaining wall filter screen, difficulty in drainage of stope slurry, serious downhole pollution, high cement consumption, segregation and stratification of filling body, etc. The use of tailings ponds will also increase the construction and maintenance costs, resulting in surface environmental pollution

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