scholarly journals Adsorption of lead ions on carbonaceous sorbents of nutshell obtained from secondary raw material

2021 ◽  
Author(s):  
T. Marsagishvili ◽  
G. Tatishvili ◽  
N. Ananiashvili ◽  
N. Giorgadze ◽  
Z. Samkharadze ◽  
...  
Keyword(s):  
Raw Material ◽  
Lead Ions ◽  
Secondary Raw Material ◽  
Carbonaceous Sorbents

Adsorption of Lead Ions on Carbonaceous Sorbents of Nutshell Obtained from Secondary Raw Material

2019 ◽  
pp. 97-100 ◽  
Author(s):  
T. Marsagishvili ◽  
G. Tatishvili ◽  
N. Ananiashvili ◽  
N. Giorgadze ◽  
E. Tskhakaia ◽  
...  
Keyword(s):  
Raw Material ◽  
Lead Ions ◽  
Secondary Raw Material ◽  
Carbonaceous Sorbents

The usage of plastic waste as a secondary raw material for the modification of sandcrete properties

2015 ◽  
Author(s):  
A. Klovas ◽  
M. Daukšys ◽  
L. Venčkauskas
Keyword(s):  
Plastic Waste ◽  
Raw Material ◽  
Secondary Raw Material

Reservoir sediment as a secondary raw material in concrete production

2015 ◽  
Vol 17 (5) ◽  
pp. 1161-1169 ◽  
Author(s):  
Natalia Junakova ◽  
Jozef Junak ◽  
Magdalena Balintova
Keyword(s):  
Raw Material ◽  
Reservoir Sediment ◽  
Concrete Production ◽  
Secondary Raw Material

Processing of waste slag of non-ferrous metallurgy for the purpose of its complex utilization as a secondary mineral raw material

2021 ◽  
pp. 3-9
Author(s):  
A. S. Kolesnikov ◽  
B. E. Serikbaev ◽  
A. L. Zolkin ◽  
G. S. Kenzhibaeva ◽  
G. I. Isaev ◽  
...  
Keyword(s):  
Raw Material ◽  
Secondary Mineral ◽  
Huge Number ◽  
Silicon Iron ◽  
Iron Aluminum ◽  
Heavy Nonferrous Metals ◽  
Complex Utilization ◽  
Calcium Silicon ◽  
Secondary Raw Material ◽  
The Moment

This article provides an overview of the methods of processing slag from welting is given, different approaches and attempts of scientists from a number of countries aimed at processing such slags are considered. In the course of the review it was found that a huge number of the following methods and methods of processing from waelz slag, there is not a single option that has sufficient complexity of processing, and that at the moment are in the dumps toxins from waelz never found its use as a secondary raw material. The elemental chemical composition of the slag from welting, which is represented by compounds of calcium, silicon, iron, aluminum, carbon and heavy nonferrous metals in the form of zinc and lead, is determined. Thus, it is established that for many years, the slags from waelz that have not found their application and are in the dump at the moment continue to have a polluting effect on the environment. Ill. 1. Ref. 63. 

Plutonium: Secondary Raw Material or Radwaste?

1994 ◽  
pp. 149-155
Author(s):  
Evgeniy V. Gai ◽  
Nikolai S. Rabotnov
Keyword(s):  
Raw Material ◽  
Secondary Raw Material

scholarly journals Epoxy resin filled with primary and secondary raw material – useable in agriculture

2014 ◽  
Vol 60 (No. 4) ◽  
pp. 165-171 ◽  
Author(s):  
P. Valášek ◽  
J. Kejval ◽  
M. Müller
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Epoxy Resin ◽  
Filler Particle ◽  
Polymeric Materials ◽  
Raw Material ◽  
Nano Particles ◽  
Inorganic Particles ◽  
Increase Wear Resistance ◽  
Secondary Raw Material

Hard inorganic particles in the interaction with polymeric materials increase wear resistance. Also reactoplastics are suitable for filling with micro- and nano-particles for a purpose of some mechanical properties optimization. The paper compares chosen mechanical properties – hardness, wear resistance and tensile characteristics of epoxy resin filled with artificial corundum with various middle particles sizes and their ratio combination. Mentioned systems can be used in a sphere of the agricultural production at renovation of machine parts, they can serve for creating resistant layers on machines, floors and grillages at the same time. The aim of the carried out experiment is to compare the properties of reactoplastics filled with a primary and secondary raw material and to define an optimum ratio of the filler particle size relating to a given mechanical quality. The artificial corundum was chosen as the primary material, the waste corundum from the process of material mechanical treatment was chosen as the secondary one.    

scholarly journals Promotion of Circular Economy: Steelwork Dusts as Secondary Raw Material in Conventional Mortars

Proceedings ◽  
2018 ◽  
Vol 2 (20) ◽  
pp. 1313
Author(s):  
Angélica Lozano-Lunar ◽  
Auxi Barbudo ◽  
José María Fernández ◽  
José Ramón Jiménez
Keyword(s):  
Construction Industry ◽  
Circular Economy ◽  
Construction Material ◽  
Previous Treatment ◽  
Point Of View ◽  
Raw Material ◽  
The European Union ◽  
Use Of Resources ◽  
Leaching Behaviour ◽  
Secondary Raw Material

Among the actions proposed by the European Union for the implementation of Circular Economy is the use of waste as a secondary raw material (SRM). During the fusion of the scrap, a steel dust is generated, named Electric Arc Furnace Dust (EAFD). The EAFD is composed mainly of potentially leachable heavy metals, so is classified as “hazardous” waste. Around the world, approximately 70% of this waste is deposited in landfills, with a previous treatment through cement-based materials to prevent the metals’ mobility. However, this action is not in accordance with the Circular Economy concept due to the greater use of resources and the loss of deposited metals. The present investigation analyses the use of EAFD as SRM in conventional mortar production for its use as a construction material. Different substitution percentages (25%, 50% and 100%) were used replacing siliceous filler by EAFD. The investigation analysed the behaviour of conventional mortars by tests of workability, compressive strength, water absorption by capillarity and leaching behaviour in granular and monolithic state. The results obtained indicate a slight improvement in mechanical behaviour with the incorporation of EAFD, the reason why its use as SRM in conventional mortars would benefit the construction industry and would encourage the Circular Economy. From an environmental point of view, the mechanisms of Pb fixation should be improved in granular state.

scholarly journals Geophysical investigation of glass ‘hotspots’ in glass dumps as potential secondary raw material sources

2020 ◽  
Vol 106 ◽  
pp. 213-225 ◽  
Author(s):  
Richard Nasilele Mutafela ◽  
Etzar Gomez Lopez ◽  
Torleif Dahlin ◽  
Fabio Kaczala ◽  
Marcia Marques ◽  
...  
Keyword(s):  
Raw Material ◽  
Geophysical Investigation ◽  
Material Sources ◽  
Secondary Raw Material
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