SU1433503A1 - Method of flotation of carbonate-fluorite ores - Google Patents

Abstract

This invention relates to the beneficiation of minerals. The purpose of the invention is to increase the extraction of fluorite and the quality of the concentrate, to reduce energy consumption by eliminating the heating of the pulp, and to improve working conditions by eliminating the toxic reagent from the process. During the wet grinding process, the ore is treated with sodium sulphide and soda ash, and the pulp is conditioned with a calcite depressant and a collector containing fatty acids or their salts in an alkaline medium. At the same time, prior to introduction into the conditioning, the acylated amino acids or their salts are introduced at a ratio, wt.%: Fatty acids or their salts 6-8, acylated amino acids or their salts 92-94. Then, fluorite is floated on circulating water containing from 0.35 to 2.00 g / dm, HCO ions and from 0.40 to 3.00 g / Dm of S0 ions. When carbonate is processed by this method. fluorite ore containing fluorite 34.8%, calcite 10.2%, extraction of fluorite s in concentrate was 82.4% with fluorite content of 92.06%, calcite 0.98% and silicon oxide 2.51%. (L 4 Sdd 00 CL about CO

Description

one

I The invention relates to the beneficiation of minerals, in particular, to methods for the flotation of carbonate-fluorite ores, and can be used in the mining industry.

The aim of the invention is to improve fluorite extraction and quality.

ten

power concentrate, energy consumption reduction

by eliminating the preheating of the pulp, improving working conditions, eliminating from the process a toxic reagent.

In the method of flotation of carbonate-Yuoritic ores, which include processing in the process of wet grinding sulphurous sodium and soda ash in the ratio of 1 g 1, concreting of the pulp from the concentrate of sulfate-alcohol barbs (CBI) and birates, fluorite flotation 2p d t in an alkaline medium on the circulating de containing HCOj ions within

15

so; at

the limits

35-2.0 g / dm, ion

4-3.0 g / dm, in the presence of a mixture

acid or their salts and acyl- 25

baths of amino acids or their salts

and the following ratio, wt.%:

8 - of large 11py acids of their salts and

-94 - acylated amino acids or

n

: salt, without preheating the pulp, without imenepi reagent-depressant of sodium silicate.

; Example 1. A carbonate-fluorite ore was subjected to enrichment one-time from deposits with a content of fi | turopite of 34.8%, calcite 10.2%. Rud4 was ground to a particle size of 90-91% Kjkacca 0.044 mm. Sodium sulphide and soda soda were fed to the crushing for the depression of the rock component and the formation of an alkaline medium. After grinding for three minutes, the pulp was treated with a sulphite-alcohol bardy with chromium added. Further, conditioning was carried out with collectors: GTM 7.6% and AAK 68.2%. Flotation was carried out on factory circulating water with a HCO ion content of 1.45 g / l of ion 80 2.4 g / l at pH 9.75 according to a scheme including basic, control, and five clean-up operations without heating the pulp. The AAK collector except the main one was submitted to the control and to the first three roughing operations. All operations were performed in a laboratory flotation machine. Extraction of fluorite in the concentrate was 82.4% with

0

P

five

five

its fluorite content is 92.06%,. i calcite 0.98% and silicon oxide 2.51%.

Example 2. The carbonate-fluorite ore of the same deposit as in the first example, with a fluorite content of 36.4%, calcite of 7.1%, was subjected to enrichment. The grinding and flotation regime is similar to that described in Example 1. Flotation was carried out on circulating water with HCOj ion content of 0.35 g / l, ion 0.4 g / dm. All flotation operations were carried out in a laboratory flotomachine with a capacity of 1 liter. Extraction of fluorite into the concentrate was 85.13% with a fluorite content of 92.8%, calcite 0.76%, and silicon oxide 2.56%.

Example 3. The same ore was subjected to enrichment as in Example 2. The conditions of the experiment were similar to those of Example 1. GTPM 6.8% was used as a collector and 6 93.2% was used as a collector. Flotation was carried out on obratornoe, water containing ion HCOj

0

35

40

45

0.395 g / dm ion

42 g / dmz at pH 9.2. The collector Talactam-6, besides the main one, was submitted to the control and in the first three clean-up operations. . In this example, the extraction of fluorite in the concentrate was 81.1% with a fluorite content in it of 92.9%, calcite 0.6% and silica 2.71%.

During the flotation experiments, it was found that in the chosen flotation mode, when the HCOj ion in the circulating water is less than 0.35 g / l and the ion is 50, 0.4 g / l, it is impossible to obtain a conditioned concentrate due to the absence of calcite depression.

The content of HCOj ion over 2.0 g / l and ion 80 over 3.0 g / l in the circulating water entering the flotation leads to a change in the reactant mode.

Claims (1)

Invention Formula The method of flotation enrichment of carbonate-fluorite ores, including grinding and processing the raw material of modifier w, conditioning the pulp with a calcite depressor and a collector containing fatty acids or their salts in an alkaline environment, fluorite flotation, characterized in that fluorite and quality, kon3 1A33503 centrate, reducing energy consumption of fatty acids or by eliminating the heating of the pulp and their salts 6-8 improvement of working conditions by excluding acylated aminches from the process of toxic reagent-acid or their salt 92-94 that, before the introduction of the flotation, the collector is carried out on a circulating stink; an aci-de containing from 0.35 to 2.00 g / dm is introduced into the conditioning. lirovanny amino acids or their solionov HCOj and from 0.40 to 3.00 g / dm, with the following ratio, wt.%: ions 80,