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

A technology of deep cone thickener and disposal method, which is applied in the field of combined disposal of full tailing paste filling and stockpiling, which can solve the problems of increasing construction and maintenance costs of tailings ponds, difficulty in drainage of stope slurry, and serious underground pollution. Achieve the effect of continuous operation of preparation quality, short concentration time and improved safety level

CN104929683BActive Publication Date: 2017-02-01UNIV OF SCI & TECH BEIJING +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-02-01

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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.
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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...

Examples

Embodiment

[0029] A gold mine adopts the upward horizontal filling mining method, and the mining scale reaches 6000t / d, which can meet the ore supply demand of the dressing plant. At present, the mine filling system mainly uses graded tailings gravity conveying for filling, and the filling concentration is 60%-65%. According to the physical properties of the tailings, the filling concentration is obviously low. At the same time, the traditional vertical sand bin is used for the dehydration of the filling aggregate, which makes the slurry concentration relatively low and the underflow concentration unstable. The low filling concentration brings many problems: the filling lime-sand ratio of the gold mine reaches 1:4, and the cement consumption is high; the excess water in the filling slurry causes high dehydration pressure in the stope, and the ultra-fine particles in the tailings and cement blockage Filling the filter cloth of the retaining wall makes it difficult to dehydrate the filling...