SU1514409A1 - Method of back flotation of iron ores - Google Patents

Description

The invention relates to the enrichment of :, minerals and m, b. not use. during the reverse flotation of iron ores. Whole inventions cheaper process for sec. d reduce the total consumption of reagents. (people include the sequential coordination of pulp with a high molecular modifier, a cationic collector and the release of nonmetallic minerals in the foamy iron and iron minerals into the chamber minerals. with respect to 0.3: 1-5.6: 1. The method allows a, to include from the process a deficient nipnance: starch product while reducing its reagent consumption by half.

The invention relates to the beneficiation of minerals and can be used in reverse flotation of iron ores.

The purpose of the invention is to reduce the cost of the process by reducing the total consumption of reagents.

The essence of the described method of reverse flotation of iron ores, including sequential conditioning of the pulp with a high molecular weight modifier and collector, the release of nonmetallic minerals and iron in the foam product into the chamber, is that a mixture of technical lignosulfonates (LSG) and polyacrylamide is introduced into the conditioning with a ratio of 0.3: 1-5.6: 1.

The technology of the proposed method consists in the following.

The pulp of the initial product of sewing solid to liquid is equal to the mixture of LST with no. Pcrp with a ratio of the last 0.3: 1 5,

Beekeeper, then spending! f nonmetallic minerals.

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Example 1. Obtained after a strong enrichment in a strong field of strength — 1 product containing 54% of iron, measured. to a particle size of 90% of the class of 0.044 mm with a solid-to-liquid ratio of 1: 2, and the pulverized pulp obtained was dried with a mixture of LST and polyacrylamide with a ratio of components of 0.3: 1, respectively, and amines from nitroparaffins (AN! 1-2) in amounts of 110 and 550 g / g, respectively.

Then spent the flotation of non-metallic minerals. The result was a concentrate: ν '

iron content '65, 4% at exit

1514409

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74.8% and extraction of iron in concentrate

90.5%.

The proposed method in comparison with the known allows to obtain satisfactory flotation indicators without the use of a scarce food product - starch, and using both anionic (MSTM) and cationic (ANP-2) collectors. The latter is particularly important, since when using a cationic collector, the resulting floto-1 concentrate is better concentrated and filtered. In addition, ANP-2 is not sensitive to the ionic composition of the pulp. This simplifies the process, because it does not require the introduction of an environmental regulator - alkali. All this

four

helps to reduce the total consumption of reagents.

Claims (1)

Claim method The reverse flotation of iron ores, including sequential conditioning with a high molecular weight modifier, a cationic collector and extraction of nonmetallic minerals into a frothy product, and iron minerals into a chamber product, characterized in that, to reduce the cost of the process by reducing the total consumption of reagents, a mixture of process lignosulfonates is introduced into the air conditioning and polyacrylamide at a ratio of 0.3: 1-5.6: 1.