SU1484369A1 - Method of ore benefication - Google Patents

Abstract

The invention relates to the enrichment of ores or industrial wastes and m. used to produce commercial ore from tails of ferruginous quartzites. The goal is to increase iron recovery from ferruginous quartzites containing aluminosilicates and phosphorus. On the territory of the tailings, dry areas are isolated and contoured. Grooves are applied to the contoured surface. Then the grooves are filled with an aqueous mixture of true quicksand of 60-65% with organic matter of 0.2-0.5%, for example, fish meal. The array is periodically moistened through the grooves. As a result of the activity of microorganisms, changes in the properties of the products that make up the enrichment tails array and the transformation of silicates into gel-like colloidal structures of true quicksand occur. With a weak permeability of the strata, the true flume is fed into the wells drilled in the array of the tailings. In a water-saturated environment, the accumulation of gels and bubbles of gaseous products of the vital activity of microorganisms, which cause an excessive pressure in the liquid phase of the rock and make the soil light. Under the influence of gravity, iron minerals are separated from true quicksand. 3 hp f-ly.

Description

The invention relates to methods for the beneficiation of ores or production wastes and can be used to obtain commercial ore from tailings of ferruginous quartzites.

The purpose of the invention is to increase iron recovery.

On the territory of the tailings, dry areas are isolated and contoured. Grooves up to 15 cm deep are applied to the contoured surface. Then, the grooves are filled with an aqueous mixture of true 60–65% water with 0.2–0.5% organic matter, such as fish meal. The array is periodically moistened through the grooves. As a result, the activity of microorganisms; The swarm in the true quicksand changes the properties of the products that make up the enrichment tailings array, containing aluminosilicates and a small amount of phosphorus. In this case, the activity of microorganisms is limited to the supply area of nutrients, which within 2-5 years turn silicates into gel-like colloidal structures of true quicksand.

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With a weak permeability of the layers leaching agent is fed into the wells.

Gels and bubbles, gaseous products of vital activity of microorganisms accumulate in water-saturated dispersed rock, which cause excessive pressure in the liquid phase of the rock and make the soil easy to lift.

Under the influence of gravity, iron minerals are deposited, which are deposited in the lower part of the array of processed tailings, and the colloidal substances of the true quicksand are displaced onto the surface of the iron mineral layer, because flux density is less than the ore fraction. In this regard, iron minerals are easily separated from the carbonate layer, i.e. true quicksand.

Example. The method is carried out at a tailing dump, the area of which is 6 km2. On the dry part of the tailings there are two sections of 1 km2 each, where the layer of stocked tails is the maximum value. The boundaries of dry areas from the dams of the tailings dam are located at a distance of 0.5 km. The boundaries of these sections from one another are also located at a distance of 0.5 km. Borders plots mark with landmarks. Then, at a distance of 2 m, grooves of up to 15 cm in depth are conducted from one another. An aqueous mixture of true flume (60-65%) with organic matter (0.5-1.0%), for example, fish meal, is supplied to these grooves. This mixture is made in mortar mixers.

For productive work of silicate microbes, there are enough traces of organic matter in the area of their activity. The fish meal, remaining at the bottom of the grooves, systematically nourishes the microbes with organic matter during rain. In the absence of rainfall, water is periodically supplied in summer months (once a month). The microbial area is restricted to the organic supply zone. If necessary, this area may be limited to the driving of sheet piling metal piles.

With a low permeability of tailings, the water mixture is fed into the wells, sampled to a depth of 0.6-0.9 the depth of the reservoir at a distance of 5 m one from the other.

The control of microbial activity is carried out through control wells.

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drilled from one another at a distance of 100 m. Control wells in two marked sections of 200 pieces. After the introduction of microbes, free access to the sites is terminated. Inspection work on the plots is allowed only from airships.

After the silicates are converted into true quicksand and commodity ore is deposited, the upper layer containing quicksands is removed by dredging pumps into ravines or into special areas surrounded by loam dams. The quicksands (true) near the dams, if necessary, can be compacted with an explosive charge explosion. True quicksands can be used as a waterproof material.

Extraction of marketable ore from the site after removal of true quicksand from it is carried out by truck or floating dredgers.

After the commodity ore is removed from the tailings site, it is filled with the tailings of the current production.

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Claims (4)

1. A method of enriching ore, including delineating dry sections of a tailing pond, feeding a leached agent onto the contoured surface and withdrawing the resulting liquid and solid ore phases, characterized in that, in order to increase iron extraction from ferruginous quartzites, IQ containing aluminosilicates and phosphorus on the contoured surface, before leaching agent is applied to it, the grooves are created, the leaching agent is introduced into the grooves, and the contoured surface is moistened periodically, while true quicksand is introduced as leaching agent. 2. A method of pop 1, characterized in that grooves are created on the contoured surface of the tailing dump. 3. A method according to claim 1, characterized in that wells are drilled in an array of storage needles. 4. Method according to paragraphs. 1-3, characterized in that the contoured surface simultaneously with you. fishmeal is added with a scavenger. five 15 0 five