SU982810A1 - Sulphide ore concentration method - Google Patents

Description

; 54) METHOD OF ENRICHMENT OF SULFIDE ORES

The invention relates to the field of mineral processing, in particular to the flotation concentration of sulphide ores.

The known method of flotation of sulphide ore, including sequential conditioning with hydroxamic cysyutami containing 5-6 carbon atoms in the hydrocarbon chain, xanthate and collective flotation of sulfides 1 1}

The disadvantage of this method is the low extraction of useful sulfide minerals, in particular copper and nickel.

The closest in technical essence and the obtained effect to the invention is a method of enrichment of sulfide ores, including conditioning with xanthate, air, fleet, blowing agent and collective flotation of sulfide minerals 2.

The disadvantage of this method is the relatively low recovery of copper and nickel minerals in the bulk concentrate. At the same time, a noticeable increase in the extraction of copper and nickel cannot be achieved even at high costs of collecting (about 400 g / t).

The aim of the invention is to increase the recovery of copper and nickel in the bulk concentrate.

This goal is achieved in that according to the method of enrichment of sulfide ores, including conditioning with xanthogenate, aeroflot, blowing agent and collective flotation of sulfide minerals, injecting talkylhydroxamic acids containing from 7 to 9 carbon atoms in the hydrocarbon chain.

The ratio of alkyl hydroxy 15 self acids, xanthate and aerofloat is from 1: 6.5: 8.5 to 2: 7.5: 8.5.

The results of flotation are not affected by the delivery form of alkylhydroxamic acids. Similar results are achieved when they are supplied in their natural form, in the form of their sodium salts, in the form of an emulsion or a partially saponified emulsion. Optimum technological results are achieved at a ratio of hydroxamic acid: xanthate: aeroFlot from 1: 6.5: 8.5 to 2: 7.5: 8.5.

Claims (2)

The positive 1st effect, which is expressed in the increase of the extraction of copper and nickel, is achieved only with the use of (-J tl ilVl tpG; Xr a G e N T O B:: ic; -iMo Hx KiicjiOT, Butylogog To. And bottles -: Aeroflot Cb: Th,. Comprehended with MCKJDO: components, T-80, SPC, MIBK can be used in a boiler. About achievable displays: GO and aj-hem with 1: 1, with indieagents or their double views / words of low collector cMecef gzlknlgidroksamovy sour indicate the synergistic effect of increasing the collective properties of the triple combination of In this case, as was to be expected in this case, the total contamination of the triple combination of reagents, than; individual reagents, silt, their double mixtures. TaiiHM obr, positive effect during the flotation of sulfide ores, bruising in copper and nickel extraction It is achieved only in the combination of distinctive features consisting in the use of the combination of alkylhydroxamic acids, butyl aeroflot and xanthate as collectors. P :: e. P 1. A portion of ore from the granule within 30 minutes to a grain size of 80% 9.074 mm. The density of the pulp was. The pulp was cocciated. For 5 min with alkylhydroxamic acids with a carbon-hydrogen radical length of 7 to 9 carbon atoms in the form of a 4% solution of nat steering salts at their consumption of 10 g / t, and the charge at 1 mV with butyl nsalgogenat , butyl aeroflot and at their expenses 75 g / t, 85 g / and 32 s / t cooiBGTCTEeHHo (the ratio of collectors is 1: 7.5: 8.5). Next, provo-D5ILI col1; effective flotation of sulphides for 10 minutes. Then control flots were carried out. For this, the pulp was again conditioned with hydrocaMOBbLMii acids in the form of a 4% aqueous solution of patrium salts at a flow rate of 5 IVT, - then for 1 min from the bottle, m xanthate, butyl aeroflot, and T-66 at their flow rates 30 r / Tf 35 g / t and 16 g / t, respectively. The time of the control flotation was 10 min. Extraction of copper and nickel into the collection concentrate was 92.85 and 89.02% corresponding to €; nno. EXAMPLE 2 Experimental conditions are analogous to example 1, but the consumption of reagents; in collective flotation - alkyl hydroxamic acids 20 g / t, butyl xanthate 65 g / t, butyl aeroflot 85 g / t, T - 66 32 g / t (ratio 2 t b, 5; 3, 5, 1; in the control float - alkylhydroxamic acid 5 g / t, butyl xanthate 30 g / t, butyl aeroflot 35 g / t, T-66 16 g / t, Not extracted copper and nickel in the collective concentrate - 93.02 and 89.13%, respectively. Example 3. The conditions of the experiment in example 1, but the consumption of reagents: -in collective flotation - alkyl hydroxamic acids 35 g / t, butyl xanthate 50 g / t, butyl aeroflot 85 g / t (ratio 3.5: 5: 8, 5), T-6 6 32 g / t; - in the control flotation - alkyl hydroxamic acids 10 g / t, butyl xanthate 25 g / t, butyl aeroflot 35 g / t, T-66 16 g / t. Extraction of copper and nickel 91.65 and 89.42%, respectively. Example 4. The conditions of the experiment of example 1, but the consumption of reagents; -to the collective flotation - alkylhydroxamic acids 50 g / t, butyl xanthate 35 g / t, butyl aeroflot 85 g / t (ratio 5: 3 , 5:; 8,5), T-66 32 g / t, -E control flotation - alkyl hydroxamic acids 20 g / t, butyl xanthate 15 g / t, butyl - aeroflot 35 g / t, T-66 16 g / r s Extraction of copper and nickel in rough call The objective concentrate was 91.97 and 89.95%, respectively. Example 5. The conditions of the experiment of example 1, but the consumption of reagents: - in collective flotation - alkyl hydroxamic acids 70 g / t, butyl xanthate 15 g / t, butyl aeroflot 85 g / t (ratio 7: 1.5:: 8.5 ), T-66 32 g / t; in the collective flotation - alkyl hydroxamic acids 25 g / t, butyl xanthate 10 g / t, butyl aeroflot 35 g / t, T-66 16 g / t. Extraction of copper and nickel in the collective concentrate was 90.68 and 88.67%, respectively. Thus, the proposed method makes it possible to increase the extraction of 0.5–2.5% copper in a collective concentrate and nickel by 0.5–1.5% with a constant content. In addition, the total consumption of reagents is lower than the total consumption of the combination of aeroflot and xanthate. Claim 1. Method of sulphide ores enrichment, including conditioning with xanthate, aeroflot, blowing agent and collective flotation of sulphide minerals, characterized in that, in order to increase the recovery of copper and nickel in the collective concentrate, alkylhydroxamic minerals are introduced into the conditioning. chains from 7 to 9 carbon carbon. 2. The method of Claim 1 is also distinguished by the fact that the ratio of alkyl hydroxamic acids, xanthate and ae ofoflot is from 6.5 to 8.5: 2 to 7.5: 8.5. Sources of information taken into account in the examination of 2810 1. USSR Author's Certificate for Application I I 2920639/03, l. In 03 D 1/02, 1980. 2. Dudenkov S.V. et al. Fundamentals of the theory and practice of the use of flotation reagents., M., Nedra, p. 290, 1968, (prototype.