SU1579562A1 - Method of jigging - Google Patents

Abstract

This invention relates to the enrichment of minerals and can be used in mineral processing plants. The goal is to increase the efficiency of enrichment. The material is introduced into a jigging machine and is divided by density in a pulsating flow of energy carrier on an artificial bed. The latter consists of a mixture of metal shot (MD) and clinker from rolling collective concentrates. The density of clinker is 3000 - 6000 kg / m3. The mass ratio of shot and clinker is from 1: 2 to 1: 9. The average diameter of the clinker grains takes from 0.8 to 1.2 of the average diameter of MD grain. Under the influence of pulsations, the bed mixture is stratified. The heavy mineral particle easily passes through the layer of clinker and is cleaned in the MD layer. A light mineral particle moves along the bed surface composed of clinker grains with tailing.

Description

The invention relates to the field of mineral processing and can be used in mineral processing plants.

The method includes the introduction of material into a jigging machine, separation of material in a pulsating flow of energy carriers on an artificial bed, removal of separation products from a jigging machine, using a mixture of metal shot and clinker from rolling collective concentrates of density 3000-6000 kg / m as a bed the ratio of the fraction to clinker is 1: 2 - 1: 4, while the average grain diameter of the clinker takes from 0.8 to 1.2 of the average diameter of the grain of the fraction.

Example. A bed consisting of metal shot was taken for jigging. Enrichment of ore containing 8-10 g / t gold.

carried out in the jigging machine MOD-0.3. Experimental parameters: bed height 70 mm, ripple frequency 300 1 / min, amplitude 3 mm, feed feed size 62% class minus 0.074 mm, pulp density 54% solid, jigging machine productivity 18 t / m h, flow of undersize water 1, 2 m / m2h

Metal fractions and clinker of different density, 2100-7500 kg / m3, particle size from 0.5 to 2.0 diameters of the shot, were used as the bed. The mass ratio varied from 1: 1 to 1:10 and 10: 1. Jigging parameters are similar to the example.

A clinker of various sizes was prepared by stratifying it by density in heavy liquids: M-45 liquid, Clerichi liquid, Rohrbach liquid. Clinker fractions with a density greater than 5000 kg / m3 are obtained by separating it in ascending streams.

sl VI th sl o y

water in a limited volume, while light grains were removed from this volume. Before each experiment, the clinker and the fraction were scattered into different size classes and a bed of a jigging machine with predetermined ratios of shot grain and clinker. The density of the clinker is determined in the Leschatelier device. 4The pulsating mixture of the bed mixture is stratified, with the lower part of the bed consisting of metal-comb, and the upper part is clinker. A heavy mineral particle easily and with great probability passes through a layer of clinker and undergoes cleaning in a layer of metal shot. The light mineral particle will move along the surface of the rto-stele composed of clinker grains with a tailing tail. Splice mineral grains (grains of useful minerals, such as sulphides, with grit grains, such as quartz) will pass through a layer of clinker and linger on a bed of mineral grains. At the same time, this particle will experience dynamic shocks from the moving part of the bed made up of clinker and from the side of the inactive bed from metal shot. In this case, it is probable that the mineral intergrowths will partially open along the interaction plane, for example, quartz and sulphides. This leads to the fact that a heavy portion of the mineral particle passes down through the bed of metal shot, and it easily rises up and leaves the tails. In addition, at the interface of the shot-clinker, a calm separation zone is formed without significant transport

pulp flows that occur when using a uniform bed. A calm separation zone significantly increases the likelihood of heavy mineral grains entering the concentrate.

Claims (1)

Invention Formula The method of jigging, including the introduction of material into the jigging machine, the separation of material on an artificial bed in a pulsating flow of energy carrier, the withdrawal of separation products from a jigging machine, characterized in that, in order to increase the enrichment efficiency, a mixture of metal shot clinker from rolling collectively concentrates with a density of 3000-6000 kg / m3, in a mass ratio of fraction to clinker from 1: 2 to 1: 4, and the average diameter of the clinker grains is from 0.8 to 1.2 average grain diameter fraction.