SU1553605A1 - Method of erecting tailing dumps in mining deposits - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to hydraulic engineering. The purpose of the invention is to increase the utilization efficiency of soluble salts contained in tailings. During the development of salt deposits, pulp is fed along the pulpline 4 to the map 1 of the alluvium. Then, the deposited tails are mixed in the settling pond with 6 pressure jets and the saturated salt solution is dropped from there. Stirring the tails and dissolving the salt is first carried out with water jets until the settling pond is filled, then with the pulp produced before the formation of a saturated salt solution. The pulp flow is regulated by the calculation formula. 2 hp f-ly, 1 ill.

Description

The invention relates to hydraulic construction, and in particular to methods for the construction of tailings during the development of lake salt deposits.

The purpose of the invention is to increase the utilization efficiency of soluble salts contained in tailings.

The drawing shows the scheme of the alluvium tailings.

On the map 1 of the alluvium with the bank 2, there is a water discharge well 3 On the border of the map 1 there is a slurry pipe 4 of the pulp feed. In the process of washing in the tailings, a flat 5 is formed, and near the spillway well 3 - a settling pond 6.

The pump installation 10 through the valve 11 and the flexible pipe 12 is connected to the pipeline 13 clean water. The flexible pipe 12 provides the movement and rotation of the flow in the sump pond to scour the plum around the perimeter of the sump. Pipeline 13 is connected to a pumping installation, which supplies water from the sump 15 to the pumping installation 10.

The suction system of the pumping unit 10 through the valve 16 is connected to the suction pipe 17 of the pulp intake from the sump pond.

The method is carried out as follows.

In the course of work on the slurry pipeline l, the pulp enters the tailing pond on an alluvium map 1. Salt particles contained in the pulp, silt, sands (tails) are deposited on the flush map and form a solid. At the same time, pumping units I and 10 supply water from the catchment basin 15 to the jetting unit 8. The amount of water supplied is regulated depending on the concentration of the slurry entering the sump.

The flow of water is regulated in accordance with the formula:

Q6 n rnase-- -k,

1 Akase

where kQn is the change in the flow rate of the pulp entering the sump, m3 / h, the change in the content of non-)

dissolved salt in the pulp, fractions of a unit; dNaCg- density of salt,

kg / m3, аКаСЈ Solubility of cooking

salts in water, kg / me; with K - the safety factor of water flow.

A jet of water from the jetting machine 5 is used to wash out the platelet 5 along the perimeter of the tailings storage, stir the deposited tailings on the platform and in the pond 6. At the same time, the valve 11 is open, and valve 16 is closed. With

stirring the tails with water leads to an intensive dissolution of salts (useful component) containing-; with tails. Water and pulp are supplied to the tailings storage facility before the settling pond is filled. In order to avoid dropping the unsaturated solution (for technical purposes for the production of salt, a saturated solution is necessary) close the valve 11, simultaneously turn off the pump unit Uf and open the valve 16, thereby supplying the unsaturated solution to the monitor 8 from the pond 6 using suction pipe 1.

The tailings are mixed by pulp until the solution is saturated, after which the pumping unit 10 is turned off and the sludge solution is drawn into the tailings, after which the light

Lenten saturated solution is returned to technological production.

Claims (2)

1. A method of erecting tailings during the development of mineral deposits, including the supply of pulp through the pipeline to the dumped area, mixing the deposited tailings in the settling pond with pressure jets, characterized in that, in order to increase the efficiency of utilization of soluble salts in tailings, simultaneous feeding of pulp and fresh water into the settling tank before it is filled with the dissolution of salts in the process of mixing the tailings, first with water jets, and then with jets of the obtained pulp until a saturated solution is formed, followed by sludge and returning its technological needs. 2. The method according to claim 1, wherein t and the fact that, in order to optimize the dissolution processes, the flow rate of the water & Q6 is adjusted in accordance with the formula bQ, p LrmaSG; g K "ACE 0 five H Masé where & Qn - the change in the flow rate of the pulp entering the sump,, change in the content of undissolved salt in the pulp per unit time, unit fraction j density of salt, solubility of table salt in water, kg / m3} the safety factor of water consumption, taking into account filtration, evaporation, entrainment. So Method according to paragraphs. 1 and 2, it is ensured that water and pulp are supplied to the monitor by means of an additional hydrotransport system located outside the tailings pond. NaCE  Ha ce k