Equipment and method for adjusting continuous concentration of low-concentration tailings and intermittent filling of high-concentration slurry

Abstract

The invention discloses equipment for adjusting continuous concentration of low-concentration tailings and intermittent filling of high-concentration slurry. The equipment comprises a thickener and avertical sand silo; the bottom end of the thickener is connected with the top end of the vertical sand silo, and the bottom end of the vertical sand silo is provided with a discharging port for conveying tailings to a stirring device; a thickener underflow thick slurry pump, a flow meter I and a concentration meter I are sequentially arranged between the thickener and the vertical sand silo; a sand silo level indicator is arranged at the top end of the vertical sand silo; a sand silo overflow pipe is arranged on the side wall of the upper end of the vertical sand silo; and a sand silo underflow thick slurry pump, a flow meter II and a concentration meter II are sequentially arranged between the discharging port of the vertical sand silo and the stirring device. The equipment is reasonablein unit time processing capacity, equipment model selection and quantity configuration, and equipment investment is minimized; and feeding and discharging are stable and balanced, the equipment performance of the thickener can be brought into full play, rake pressing accidents are prevented, the service life of the equipment is maintained, and maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of filling slurry, in particular to a device and method for adjusting continuous concentration of low-concentration tailings and intermittent filling of high-concentration slurry. Background technique [0002] In the field of full tailings filling in metal mines, as the particle size composition of full tailings becomes increasingly finer, the low-cost, efficient and reliable concentration of full tailings mortar has become a key technology. From the initial horizontal sand bin to the vertical sand bin, and then to the deep cone paste thickener, the efficiency of tailings treatment is increasing day by day, basically meeting the current needs of tailings filling. [0003] However, this change has also brought some problems. Often only a part of the tailings produced by the concentrator is used for filling operations, and the rest needs to be discharged to approved tailings ponds or other facilities, especial...

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Problems solved by technology

[0006] Due to the improvement of the specifications of the former thickener, its various costs will be greatly increased. What's more, under the current technical conditions, it is impossible to rely on a single device to complete a large-scale processing capacity, so it can only rely on incremental construction, that is, construction 2 or more sets of equipment, the total investment of the project will increase greatly, and it may not be suitable for all mining enterprises; the thickener used by the latter greatly increases the height of the pool body on the basis of the same diameter, which not only increases the cost of materials and processing cost, and as the height increases, the driving torque required becomes larger, and the purchase cost of key components increases significantly. More importantly, the most suitable working condition of the thickener is the balance of in and out, and after adding the storage function, the equipment workers The conditions are constantly changing, greatly affecting the service life of the equipment, increasing the probability of raking pressure and the difficulty of on-site operation

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