SU1084076A1 - Collector for flotation of phosphate ores - Google Patents

Abstract

The use of monoesters Alksh1 (AlKCHtin) of succinic acids and monohydric aliphatic alcohols of the formula R-CH-COOH SI -COOR2 where R, R2 are hydrocarbon radicals with the number of hydrocarbon atoms from 7 to 16, in the form of alkali salts as an collector for the flotation of phosphate ore. . (L 00 4 O O)

Description

The invention relates to the field of mineral processing, namely, the enrichment of phosphate ores by flotation. It is known to use for flotation phosphate from ores of various carboxes containing reagents-gatherers in de mono- and dicarboxylic acids and and derivatives such as halothyclic, sulfonic acids, and others. In the practice of flotation concentration of phosphate ores, technical products are used as such collectors: tall oil acids, synthetic acids obtained by oxidizing paraffinic hydrocarbons of different composition, oil oxidates, technical fatty acids 1, 23, and DL. The disadvantage of these collectors is the low selectivity of action. , especially during the flotation of ores complex in mineralogical composition, such as apatite-carbonate, apatite-silicate, carbonate, which does not allow to obtain high-quality apatite New concentrate It is known to use phosphate ores in flotation, in particular apatite-carbonate-silicate and carbonatites, as a carboxyl-containing collector of the Na-salt of N-alkyl monoamides alkyl (alkenyl) succinic acid CAZ and C5. The specified collector has a high selectivity of action with respect to the flotation of apatite and provides for the production of high-quality apatite concentrates from these ores with increased recovery. A disadvantage of the use of the Na-salt of alkyl monoamides, apkyl (alkenyl) succinic acid as a collector, is a reduced flotation activity and, as a consequence, high flotation costs of 250-450 grams per ton of flotation feed. In addition, the reagent has a relatively high cost, which is largely determined by the high cost of the feedstock, in particular amines. The compounds known are monoesters of alkyl (alkenyl) succinic acids and monohydric aliphatic alcohols, which have been used as defoamers in the manufacture of C6 photo paper. During flotation, monosubstituted esters of alkyl (alkenyl-) succinic acids and monohydric alcohols have not been previously used. The purpose of the invention. is an increase in flotation activity of the collector and a cheaper process by reducing the cost of reagents while maintaining sufficiently high technological parameters. This goal is achieved by the use of alkyl (alkenyl) succinic acid monoesters and monohydric aliphatic alcohols of the formula R-CH-COOH CH-COOR hydrocarbon radicals. with carbon atoms from 7 to 16, in the form of alkaline salts as a collector for the flotation of phosphate ore. Example 1. A non-magnetic fraction of apatitoforsteromagnetite ore from the Kovdor deposit is floated with the following mineralogical composition, wt%: apatite 29, forsterite 53, carbonates 13, mica and other 5; content of 12.5%, MgO 21.3%. The ore is ground to size. -0.3 mm and up to a grade of -0.063 mm 38.6%. Flotation is carried out without desliming in the open cycle. Consumption of reagents at optimum CONDITIONS 51M, g / t: Soda (,) Liquid glass (40%) Monoether alkenyl () - succinic acid and aliphatic monohydric alcohols (C; p), Na-salt OCQ including in the main flotation in control flotation or N-Alkyl (Cio-Ci6) monoamide alkenyl (Cg-C (j) succinic acid, Na-salt including in basic flotation in control flotation 100 The results of forsterite I10840764 flotation of apatite-known and proposed collecting using teles in table.1., table1

44.1 25.83 From the data of Table 1 it follows that about the collector provide close indicators. However, when using the proposed collect, the achievement of these indicators is possible at a lower (by 22%) consumption. Example 2. A non-magnetic fraction of apatite-carbonate silicate ore from the Cebl deposit of the following mineral composition Baj wt.% Is floated: apatite 16.5; carbonates (mainly calcite) 21.2 amphiboles and pyroxenn 24., 7 j phlogopite 14.8j magnetite 13.7 and others (olevin-forsterite, perovskite, sulfides) 9.1. The content of non-magnetic FR is 7.0%. The nematite fraction is ground to a grade of +0.315 mm 4% and -0.063 mm 44%, a class +0.315, mainly phlogopite is separated (yield 4%). Flotation is performed in a closed loop in fresh water.

90.9 41.8 27.03

90.1 The flotation scheme includes the main control flotation, five flow of the concentrate of the main fleet, doflotation of intermediate streams in a separate cycle with the direction of the frothy product to the main part and the chamber flow into the tailings. Optimal consumption of reagents: Soda (Liquid glass (40%) Monoether alkenyl (Co-C) succinic acid and aliphatic monohydric alcohols, Na-salt, including in the main flotation in the control in the doflotation of industrial products or K- Alkyl (C, o-C.) Monoamide alkenyl- (,) amber

acids, Na-salt including in, the main flotation in the control in the doflotation of middlings

Flotation products

As can be seen from Table 2, both reagents provide almost the same performance, the proposed collector exhibits a greater photoelectric activity, which requires less (by 20%) of its consumption.

The proposed collector was tested during flotation of this ore according to the results of flotation of a non-magnetic fraction of apatite-carbonate-silicate ore in a closed cycle in fresh water using the well-known proposed collectors are presented in Table. 2

 Table 2

J. 1

sled above scheme using

recycled water. The consumption of reagents in this case was, g / t:

Soda ()

1500 Liquid glass (40%)

1250 Monoester alkyHH: jf () succinic acid and aliphatic 1084076 alcohols, Na-salt, including as it can be seen from Table 3, the proposed collector is also effective in the flotation condition on recycled water.

In this way; These examples show that when the same relatively high enrichment indistinct values are reached, apatite-carbonate-silicate

15

The use of the proposed collector reagent makes it possible to reduce the consumption rates of the collector by 20-22%, which indicates an increase in the photoactivity of the reagent used and leads to a decrease in the cost of apatite concentrate. 8 in doflotachshi industrial products

Claims (1)

Use of alkyl (alkenyl) succinic acid monoesters and monohydric aliphatic alcohols of the formula to -sn-soon ¹ CH-SOOKA g ² where - hydrocarbon radicals with the number of hydrocarbon atoms from 7 to 16, in the form of alkaline salts as a collector for phosphate flotation · RUD with 5II, 1084076 one