Extraction of alumina from industrial waste pollutants for the preparation of blue spinel ceramic materials: Processing and characterization

2021 ◽  
pp. 125400
Author(s):  
H.H. Abo-almaged ◽  
W.H. Hegazy ◽  
M.S. Azmy ◽  
R.M. Khattab
Keyword(s):  
Industrial Waste ◽  
Ceramic Materials ◽  
Materials Processing ◽  
Spinel Ceramic

scholarly journals Use of Industrial Waste for the Optimization of Ceramic Construction Materials

2020 ◽  
Author(s):  
Carlos Galhano ◽  
Pedro Lamas ◽  
Diogo Seixas
Keyword(s):  
Industrial Waste ◽  
Mechanical Characteristics ◽  
Raw Materials ◽  
Bottom Ash ◽  
Construction Materials ◽  
Fine Fraction ◽  
Mineral Resources ◽  
Ceramic Materials ◽  
High Production Rate ◽  
Marble Powder

The massive growth of the ceramic industry and the consequent demand for construction materials worldwide has motivated the search for alternative solutions aimed at reducing the use of mineral / natural resources as the main source of raw materials. One of the strategies frequently adopted by the scientific community is the reuse of industrial waste. It is beneficial not only to reduce the overexploitation of mineral resources but also to reduce the environmental, economic and social impacts resulting from their incorrect disposal/treatment and consequent deposition on land unsuitable or that purpose. Duetoconsiderationssuchasphysico-mechanical characteristics and the high production rate, two different types of industrial waste were selected for this work, ashes resulting from the burning of coal in thermoelectric power plant, commonly known as bottom ash (B), and the Marble Powder (MP). It was intended to test the technological feasibility of the manufacture of ceramic materials produced from clay mixtures containing these two residues. For this purpose, the fine fraction(<63μm)obtained from the sieving of the marbleresidue(MR)and slag(Bf)was used,aswellasacoarsergrainslagfractionrangingfrom63-125μm(Bg). The resulting test samples were subjected to a firing of 950 °C under an oxidizing atmosphere, following a primary drying process. Faced with the standard values, the new ceramic materials obtained from MP have seen their mechanical and porous characteristics decrease and increase, respectively. Atthesametime,althoughtheadditionofBinno way influenced the mechanical characteristics,a significant improvement the porous characteristic was observed. The incorporation of these residues produced a color very close to the original sample material. Keywords: industrial waste, ceramic, construction materials, bottom ash, Marble Powder

The Use of Carbonate Sludge in the Production of Porous Aggregate

2020 ◽  
Vol 24 (6) ◽  
pp. 15-19
Author(s):  
A.V. Kolpakov ◽  
E.S. Abdrakhimova
Keyword(s):  
Industrial Waste ◽  
Liquid Glass ◽  
Glass Composition ◽  
Physical And Mechanical Properties ◽  
Ceramic Materials ◽  
Environmental Safety ◽  
Raw Material ◽  
Material Base ◽  
Carbonate Sludge ◽  
The Russian Federation

The possibilities of obtaining porous fillers based on carbonate sludge and liquid-glass composition are considered. One of the issues of industrial waste disposal is the creation of waste-free technologies. The use of nanotechnology-based carbonate sludge in the production of porous aggregates increases environmental safety. A porous aggregate with high physical and mechanical properties was obtained. The use of carbonate sludge in the production of porous aggregate contributes to: a) recycling of industrial waste; b) environmental protection; C) expanding the raw material base for obtaining ceramic materials for construction. A patent of the Russian Federation was obtained for the obtained method of producing a porous aggregate using a liquid-glass composition.

Acid resistant ceramic materials produced using industrial waste products

1988 ◽  
Vol 45 (1) ◽  
pp. 34-38
Author(s):  
G. G. Gaprindashvili ◽  
M. K. Kekelidze ◽  
L. K. Tedeishvili
Keyword(s):  
Industrial Waste ◽  
Ceramic Materials ◽  
Waste Products ◽  
Resistant Ceramic

scholarly journals Influence of ultrasound assist during combined drying on ceramic materials quality and drying kinetics

2018 ◽  
Author(s):  
Andrzej Pawłowski ◽  
Weronika Trawińska
Keyword(s):  
Mechanical Properties ◽  
Product Quality ◽  
Ceramic Materials ◽  
Quality Parameter ◽  
Materials Processing ◽  
Strength Parameter ◽  
Material Strength ◽  
Drying Rate ◽  
Different Temperatures ◽  
Ultrasound Application

Presented in this article studies show the investigation of ultrasound application as a new method for improvement of ceramic materials processing and their influence on mechanical properties of dried samples. Ultrasound were applied during convective and convective-microwave processes carried out in two different temperatures. Obtained results indicate increase of drying rate due to sonification and what’s more interesting they affect the material strength parameter. The experiments indicate that the effectiveness of ultrasound assist depends on the drying temperature and such dependency is observed mainy when considering dry product quality parameter. Keywords: ceramics; hybrid drying; material strength

scholarly journals Building ceramics based on composition of low-quality clay and slurry

2018 ◽  
Vol 143 ◽  
pp. 02014 ◽  
Author(s):  
Viktoriya Guryeva ◽  
Alexander Doroshin ◽  
Yuliya Andreeva
Keyword(s):  
Mechanical Properties ◽  
Industrial Waste ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Ceramic Materials ◽  
Methodological Framework ◽  
Structure And Properties ◽  
Increasing Demand ◽  
As Effects

At present, there is a trend towards increasing demand for ceramic products with enhanced physical and mechanical properties. This study is aimed at developing scientifically grounded compositions of ceramic products that maximize the use of local low-quality aluminosilicate raw materials and secondary raw materials in brick-making technology. Characteristics of local low-melting clays and industrial waste in the form of drilling slurry with minimum percentage of petroleum product were studied and presented in this paper. Standard methods for determining physical and mechanical properties of bricks, physicochemical and statistical methods of research are used as a methodological framework. The paper shows effects of drilling slurry with an increased content of calcium oxide on the composition, physical and mechanical properties of wall ceramics, as well as effects of composition of low-quality local clays and slurries on the structure and properties of ceramic materials. The modifying role of container glass and its effects on properties of a synthesized ceramic piece were studied and presented.

Ceramic Brick with High Water Retentivity Prepared from Ceramic Waste and by Products

2006 ◽  
Vol 45 ◽  
pp. 2235-2239
Author(s):  
Toyohiko Sugiyama ◽  
Hajime Nagae ◽  
Kazuo Suzuki ◽  
Kenichi Nakano
Keyword(s):  
Water Absorption ◽  
Industrial Waste ◽  
Bending Strength ◽  
Raw Materials ◽  
Ceramic Materials ◽  
High Water ◽  
Porous Ceramics ◽  
Waste Materials ◽  
Ceramic Brick ◽  
Heat Of Evaporation

Many kinds of industrial waste were examined as potential constituents of ceramic bricks or tiles. The basic physical properties of these materials were measured, such as sintering temperature, water absorption, porosity, density, color, chemical stability and bending strength. Several kinds of sintered ceramics containing large amounts of waste materials were obtained by adjusting the amount of the waste materials added to the ceramics. These were fired at temperatures lower than 1000°C. A lowering of firing temperature results in a reduction of discharge of CO2 on the production process. Ceramic brick with high water retention is expected to mitigate the heatisland phenomenon by the latent heat of evaporation. Porous ceramics were prepared using industrial waste, burned ash and recycled roofing tile as raw materials. The permeability, water retentivity, water absorption, and other properties of the porous recycled ceramics were investigated. The pF value of the ceramics was measured as an indicator of water retentivity. An appropriate method of characterizing water retentive ceramic materials was also discussed based on results of fundamental examination of the ceramics under practical conditions.

scholarly journals Celtniecības keramika, keramzīts un keramiskie sorbenti

2018 ◽  
Vol 35 ◽  
pp. 30-61
Author(s):  
Ruta Švinka ◽  
Visvaldis Švinka
Keyword(s):  
Industrial Waste ◽  
Building Materials ◽  
Raw Materials ◽  
Porous Ceramic ◽  
Ceramic Materials ◽  
Photocatalytic Decomposition ◽  
Ceramic Surface ◽  
Pore Former ◽  
Advantages And Disadvantages ◽  
Clay Pellets

Vēsturiski viena no silikātu tehnoloģijas katedras pamattēmām vienmēr ir bijusi celtniecības materiālu pētīšana un jaunu materiālu izstrāde. Tie ir gan keramikas materiāli, gan materiāli uz neorganisko javu saistvielu bāzes. Ir analizētas un salīdzinātas šo materiālu īpašības: siltuma vadāmība, līdzsvara mitrums, mehāniskās īpašības. Salīdzinātas rūpnieciskos apstākļos un laboratorijā iegūtu dažādu Latvijas mālu keramikas materiālu īpašības un struktūra. Aprakstīta dažu rūpniecisko atkritumu ietekme uz keramikas materiālu īpašībām. Aprakstīta arī jauna keramikas materiāla keramzīta ražošanas tehnoloģija – vienas stadijas paņēmiens, kas ļauj paplašināt keramzīta ražošanai izmantojamo izejvielu bāzi un variēt keramzīta īpašības atkarībā no paredzamā pielietojuma. Pētīta dažādu Latvijas mālu noderība porainu keramisku sorbentu iegūšanai, par poru veidotājiem izmantojot organiskas dabas ražošanas atkritumus. Analizēta keramikas virsmas apstrāde, piemēram, apstarošana ar paātrinātajiem elektroniem un nanodaļiņu pārklājumi, keramikas granulu sorbcijas spējas palielināšanai un noderība fotokatalītiskai organisku piesārņotāju sadalīšanai.Building Ceramics, Expanded Clay, and Ceramic SorbentsInvestigation and development of new building materials historically was one of base research fields in the Institute of Silicate Materials. These are ceramic materials and materials based on inorganic binders. These materials have both advantages and disadvantages. Properties of these materials, such as thermal conductivity, equilibrium humidity and mechanical properties, are analysed and compared. Properties and structure of ceramic materials produced from Latvian clays in the laboratory and industrially were compared. Influence of addition of some industrial waste on the properties of ceramic materials was described. A new technology for obtaining expanded clay pellets was developed. It is a one-step technology that makes it possible to extend the basis of raw materials for production of expanded clay pellets and to produce pellets with different properties depending on the possible practical use. Usefulness of different Latvian clay for the production of porous ceramic sorbents was investigated. Organic industrial waste was added to function as pore former. A treatment of ceramic surface by irradiation with accelerated electrons or coating with nanoparticles was analysed. An increase of sorption activity of ceramic pellets or usefulness for the photocatalytic decomposition of organic pollution was the goal of the aforementioned treatment.Keywords – ceramics, expanded clay, equilibrium moisture, thermal insulation, ceramic granules, sorbents.

Sign in / Sign up

Export Citation Format

Share Document