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ArticleName Assessment of efficiency of using the polyvinyl alcohols as binder during the briquetting of flotation copper-nickel concentrate
DOI 10.17580/tsm.2016.08.05
ArticleAuthor Ozerov S. S., Portov A. B., Tsymbulov L. B., Mashyanov A. K.

LLC “Gipronikel” Institute, Saint Petersburg, Russia:

S. S. Ozerov, Junior Researcher of Laboratory of Metallurgy, e-mail:
A. B. Portov, Senior Researcher of Laboratory of Metallurgy
L. B. Tsymbulov, Head of Laboratory of Metallurgy


JSC “Kola MMC”, Murmansk Oblast, Zapolyarny, Russia:

A. K. Mashyanov, Chief Production Modernization Manager


Nowadays, Kola MMC started the industrial exploitation of the site of briquetting of bulk copper-nickel concentrate. Process flowsheet foresees the primary dehydration of the concentrate pulp on press-filters, supply of binder (liquid lignosulfonate) and its mixing with the concentrate, drying of obtained mixture, secondary introduction of lignosulfonate and briquette formation on rolling briquette-press. Currently, technical lignosulfonate, used as binder, started to be not the cheap and accessible production wastes, but the highlydemand technical materials, which makes a negative effect on economic part of the production stage. The urgent issue of the briquetting site is the optimization of the consumption of rated materials (binder consumption, in particular). Searches of alternative types of binders are carried out. The investigations were carried out on the rolling press B050 (K. R. Komarek Inc.). Water solutions of polyvinyl alcohols (various grades and manufacturers) were used as binder during the rolling briquetting of bulk copper-nickel concentrate. A key factor, defining the efficiency of using the polyvinyl alcohol as binder, is the polymerization grade: the higher it is, the lower is the consumption of polyvinyl alcohol, required for the qualitative briquettes obtaining. From the other hand, increasing the grade of polymerization of polyvinyl alcohol leads to its viscosity. This, in combination with its low concentration in solution can create certain problems in operation of industrial equipment for the charge preparation to briquetting.

keywords Briquetting, rolling briquette-press, copper-nickel concentrate, polyvinyl alcohol, compressive strength, binder, polymerization grade

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