Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/75432
Title: Lignosulfonate, anionic surfactants and their mixtures influence on water solutions surface tension and zinc concentrate pressure leaching
Authors: Kolmachikhina, E. B.
Ryzhkova, E. A.
Dmitrieva, D. V.
Sviridov, V. V.
Naboichenko, S. S.
Issue Date: 2019
Publisher: Institute of Physics Publishing
Citation: Lignosulfonate, anionic surfactants and their mixtures influence on water solutions surface tension and zinc concentrate pressure leaching / E. B. Kolmachikhina, E. A. Ryzhkova, D. V. Dmitrieva et al. // IOP Conference Series: Materials Science and Engineering. — 2019. — Vol. 525. — Iss. 1. — 12023.
Abstract: The formation of elemental sulfur during sulfide concentrate pressure leaching leads to the appearance of sulfur-sulfide granules, which significantly reduces zinc dissolution rate. The solution for this problem was the use of surfactants, which prevents the negative effect of molten sulfur, avoiding the granule formation during leaching. Lignosulfonates (waste from the woodworking industry) are most often used as reagents for sulfide concentrate pressure leaching. Influence of individual and mixtures of surfactants on surface tension of aqueous solutions, zinc extraction and size-grade distribution of cakes after sulfide zinc concentrate pressure leaching. Surface tension of aqueous solutions was analyzed by stalagmometric method. Leaching was performed in titanium autoclave in presence of lignosulfonate, sodium dodecylbenzenesulfonate and sodium dodecylsulfate. Solutions after leaching were analyzed on zinc by atomic absorption spectroscopy. Size-grade analysis of cakes after leaching was carried out by laser diffraction particle size analyzer. In this work, synergetic influence was observed of anionic surfactants and lignosulfonate on decreasing of aqueous solutions surface tension. The best results were obtained when LS-SDBS mixture was used, namely in the range of sodium dodecylbenzenesulfonate concentrations 400-600 mg / l. Usage of combined surfactants allowed to achieve high rates of zinc extraction and optimal particle size of cakes after leaching. At Ls and SDBS using zinc extraction was increased from 77,2 % up to 82,8 %, with the bulk of the cake (96,7%) having a particle size of-150 μm. Combined surfactants usage (lignosulfonate and sodium dodecylbenzenesulfonate) can be recommended for applying at pressure leaching of sulfide zinc concentrates. © Published under licence by IOP Publishing Ltd.
Keywords: ABSORPTION SPECTROSCOPY
BIOPHYSICS
EXTRACTION
GRANULATION
LEACHING
MIXTURES
PARTICLE SIZE
PARTICLE SIZE ANALYSIS
SODIUM DODECYL SULFATE
SULFUR COMPOUNDS
SURFACE TENSION
WOODWORKING
ZINC
ATOMIC ABSORPTION SPECTROSCOPY
GRANULE FORMATIONS
LASER DIFFRACTIONS
OPTIMAL PARTICLE SIZES
SODIUM DODECYLBENZENESULFONATE
SULFIDE CONCENTRATES
WOODWORKING INDUSTRY
ZINC CONCENTRATES
CHEMICALS REMOVAL (WATER TREATMENT)
URI: http://hdl.handle.net/10995/75432
Access: info:eu-repo/semantics/openAccess
Conference name: 4th Interdisciplinary Scientific Forum with International Participation on New Materials and Promising Technologies, NMPT 2018
Conference date: 27 November 2018 through 30 November 2018
SCOPUS ID: 85067802017
WOS ID: 000490925000023
PURE ID: 10010808
ISSN: 1757-8981
DOI: 10.1088/1757-899X/525/1/012023
metadata.dc.description.sponsorship: Leaching experiments and grade size analysis were conducted at the expense of the Russian Science Foundation grant (project No. 18-19-00186).
RSCF project card: 18-19-00186
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.