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conferenceseries
.com
Volume 6
Research & Reviews: Journal of Material Sciences
MatSciEngg 2018
October 15-17, 2018
October 15-17, 2018 Helsinki, Finland
31
st
Materials Science and Engineering
Conference: Advancement & Innovations
Elaboration of new types, environmentally safe fire-extinguishing powders and establish the conditions of
extinguish optimum and effective use of such powders
Lali Gurchumelia
1
, Murman Tsarakhov
1
, Tengiz Machaladze
1
, Salome Tkemaladze
2
and Feliks Bejanov
3
1
R Agladze Institute of Inorganic Chemistry and Electrochemistry, Georgia
2
Tbilisi State University, Georgia
3
G Tsulukidze Mining Institute, Georgia
T
heaimof thepresented investigation is thedevelopment of technology forproductionof novel, halogen-free, environmentally
safe, highly efficient fire-extinguishing powders based on local mineral raw materials which does not require modification
with expensive, halogen-inclusive, hydrofobizing additives, providing low-cost production of fire-extinguishing powders in
comparison with imported analogues. The optimal dispersity was selected in such way, that caking capacity is minimal and
a homogeneous action of combustion products on the flame as well as a heterogeneous inhibition of combustion process
must take place. The evaluation of powder efficiency is carried out with consideration of the both effects. Experimental data
confirm that the developed fire-extinguishing powders are characterized with high performance characteristics, as well as
high fire-extinguishing capacity. At the same time it should be noted that the efficiency of the obtained powders is practically
the same as of standard imported powders, but do not contain any halogens, is environmentally safe and 1.5-2 times cheaper
than the imported analogues. For obtained powders, the conditions of extinguish optimum and effective use of powder are
stated. Optimum extinguishing condition means the selection of optimum intensity of powder supply into seat of fire when
minimum consumption of powder provides fire extinguishing in minimum time. Thus, in order to determine optimum
conditions of extinguishing it is necessary to study the dependence of powder specific consumption and extinguishing time to
supply intensity. For our powders optimum condition of extinguish is the powder supply intensity I-0.6-1.0 kg/m2sec to fire
center when powder specific consumption does not exceed G=0.8-1.2 kg/m2. Therefore, we can surmise that the use of fire-
extinguishing powders of our preparation is possible at extinguishing of all types of fires over ground, as well as, underground
constructions and does not need additional antiseptic measures.
Biography
Lali Gurchumelia is a Chemist, Doctor of Technical Sciences. She has worked with TSU Rafael Agladze Institute of Inorganic Chemistry and Electrochemistry
(Georgia). Her research interests are in chemical science, chemical engineering, ecological engineering and ecological biotechnology. She has 55 publications,
including in the infactactatorial journal-12. Currently she is the Manager of the grant# 216770- New type fire-extinguishing powders and foam-suspensions based on
local mineral raw materials. She has also participated in many international conferences and congresses such as Nürnberg, Germany; Toledo, Spain; New Forest,
UK; Montreal, Canada; Istanbul, Turkey; Elenite Holiday Village, Bulgaria; Rome, Italy; Paris, France; Yerevan-Vanadzor; Tbilisi, Georgia and Ureki, Georgia.
l_gurchumelia@yahoo.comLali Gurchumelia et al., Res. Rev. J Mat. Sci. 2018, Volume 6
DOI: 10.4172/2321-6212-C5-026