SU1603031A1 - Method of producing silling-up composition - Google Patents

Abstract

The invention relates to the mining industry and is intended for the preparation of a hardening filling mixture (C). The goal is to reduce the cost of C by reducing the flow rate in the e-mail while ensuring normal strength and timing of the laying. In the thickener 1, the enrichment tails are thickened and fed to the storage bin 2. In the preparation of the backfill C, the enrichment tails are fed at metered flow to the mixer 4 and their dynamic viscosity is measured using an analyzer 5. The obtained viscosity value is fed to the control unit 6, which gives a corresponding signal to the feeder 7. It dispenses the flow rate to the user depending on the value of the dynamic viscosity of the enrichment tails. 1 il.

Description

The invention relates to the mining industry and can be used in the development of mineral deposits with the laying of the goaf.

The purpose of the invention is to reduce the cost of the filling mixture by reducing the flow rate of the charge while ensuring the standard strength and timing of the setting of the bookmark.

The drawing shows a flow chart for the preparation of a filling mixture.

The scheme includes a thickener 1, a storage bin 2 for enrichment tailings, a bunker 3 with a holding (cement), a mixer 4. At the outlet of the bunker 2, an analyzer 5 of tails is connected to the control unit 6 of the feeder 7.

As the thickener 1 can be applied, for example, plate. The functions of the analyzer 5 are performed by any rotational viscometer, for example, PB-8. The control unit 6 can serve as a control computer, e.g. MS-27-02, regulating the voltage supplied to the rotary feeder 7. This varies its rotational frequency.

The method is carried out as follows.

After the wet enrichment process waste goes to thickener 1, where it is dehydrated and then stored in bunker 2. With continuous laying, bunker 2 is also continuously discharged. The discharge is passed through analyzer 5, where the dynamic viscosity value is taken. Next, the tails enter the mixer 4. The dynamic viscosity index obtained in the analysis is fed to the control unit 6. The values of the normative strength for the application are laid down by the operator.

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masonry and control hardening time. The control unit 6 calculates the current cement consumption by the incoming data and gives a signal to the feeder 7, increasing or decreasing the discharge capacity of the hopper 3. The cement shipped in the required quantity enters the mixer 4, where it mixes with the tails and is brought to the light. Next, the mixture goes to the tab.

Determination of flow rate in the control unit is carried out, for example, by the formula

(/(BUT /

.3.

cement content, m hardening time, days; regulatory strength bookmarks

after time / MPa; dynamic viscosity of tailings, Pa-s;

constants determined experimentally for each enterprise 0

five

0

ti, for example for Dzhezkazgan MMC (, c-0.15; / -0.2).

For a group of companies related to natural conditions, it is possible to do without calculations (by making them once), and the cement consumption can be set outside.

Claims (1)

Invention Formula The method of preparation of the filling mixture, which includes thickening the tailings of the enrichment and displacing them into the thruster by feeding with a metered flow of these components into the mixer, reveals the fact that, in order to reduce the cost of the filling mixture by reducing the consumption of the thrasher while ensuring standard strength and timing of hardening bookmarks, measure the dynamic viscosity of the enrichment tailings entering the mixer, and adjust the metering of the flow rate based on the viscosity value. // skip