skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Physically absorbable reagents-collectors in elementary flotation

Abstract

Based on the reviewed researches held at the Institute of Mining, Siberian Branch, Russian Academy of Sciences, the effect of physically absorbable reagents-collectors on formation of a flotation complex and its stability in turbulent pulp flows in flotation machines of basic types is considered. The basic requirements for physically absorbable reagents-collectors at different flotation stages are established.

Authors:
;  [1]
  1. Russian Academy of Sciences, Novosibirsk (Russian Federation). Institute of Mining
Publication Date:
OSTI Identifier:
21240337
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Mining Science (English Translation); Journal Volume: 43; Journal Issue: 5; Other Information: TN: Translation of Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 5; 86-95 (Sep/Oct 2007); Related Information: Translation of Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 5; 86-95 (Sep/Oct 2007)
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; FLOTATION; FUEL PARTICLES; REAGENTS; STABILITY; TURBULENT FLOW; COAL; COAL PREPARATION; MINERALS; ELASTICITY; PARTICLES

Citation Formats

S.A. Kondrat'ev, and I.G. Bochkarev. Physically absorbable reagents-collectors in elementary flotation. United States: N. p., 2007. Web. doi:10.1007/s10913-007-0056-9.
S.A. Kondrat'ev, & I.G. Bochkarev. Physically absorbable reagents-collectors in elementary flotation. United States. doi:10.1007/s10913-007-0056-9.
S.A. Kondrat'ev, and I.G. Bochkarev. Sat . "Physically absorbable reagents-collectors in elementary flotation". United States. doi:10.1007/s10913-007-0056-9.
@article{osti_21240337,
title = {Physically absorbable reagents-collectors in elementary flotation},
author = {S.A. Kondrat'ev and I.G. Bochkarev},
abstractNote = {Based on the reviewed researches held at the Institute of Mining, Siberian Branch, Russian Academy of Sciences, the effect of physically absorbable reagents-collectors on formation of a flotation complex and its stability in turbulent pulp flows in flotation machines of basic types is considered. The basic requirements for physically absorbable reagents-collectors at different flotation stages are established.},
doi = {10.1007/s10913-007-0056-9},
journal = {Journal of Mining Science (English Translation)},
number = 5,
volume = 43,
place = {United States},
year = {Sat Sep 15 00:00:00 EDT 2007},
month = {Sat Sep 15 00:00:00 EDT 2007}
}
  • The constantly increasing proportions of fines in the run-of-mine coals sent for cleaning are making it increasingly urgent to intensify the flotation process. Flotation reagents are normally conditioned by mechanical, hydrodynamic, or steam/air methods before use. It was found that ultrasonic conditioning of the reagents promotes the formation of finely dispersed emulsions. In bench-scale experiments using these ultrasonically emulsified reagents, concentrate yields and ash content of the tailings were higher than when standard emulsions were used. 3 references, 3 tables.
  • Flotation concentrate contains reagents which affect the subsequent decarbonization process and products. Derivatographic analysis was applied to selected gas, fat and coking coals, and the results show a clear endothermic effect which reflects the complications introduced by the flotation reagents. Whereas organic reagents promote reactivity in gas coal, they exert the opposite effect in fat and coking coal. 5 references
  • The coking charge includes flotation concentrate, containing a certain quantity of flotation reagents on its surface. An investigation of the effect of these reagents on the properties of coal during thermal destruction (and in the final analysis on the quality of the coke) appears of definite interest in this regard. For the investigation we chose Kuznetsk coal types G, Zh, and K and individual organic compounds of various types, constituting component parts of the most widely used flotation reagents.
  • An attempt was made to determine the relationship of chemical properties of reagents to their flotation activity. The relationship of the destruction of paramagnetic centers of the coal after absorption of the reagents to the dipole moment of the reagents was determined for aliphatic and aromatic compounds as well as compounds having two polar groups. H was determined that this destruction of paramagnetic centers is a good indicator of flotation activity. Flotation activities of various groups of compounds were determined: naphthenes, aliphatic acids, alcohols, esters, ketones, and 1,3-dioxan. Of all the compounds tested, 1,3-dioxan was found to have the bestmore » flotation activity. (JMT)« less