CHARACTERIZATION OF NATURAL DIATOMITE BY THERMAL ANALYSIS

Auteurs :  H. MERADI, L. ATOUI, L. KOTBIA, S. BENAYACHE, W. Ghabeche, K. Bedoud, L. Bahloul
Année : 2017
Domaine : Métallurgie
Type : Communication
Conférence: 6th TUNISIAN CRYSTALLOGRAPHIC MEETING
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF : 
Mots clés : diatomite, characterization, DSC, ATG

Résumé : 

Diatomite also called Kieselguhr obtained from the Sig deposit located in thewestward of Algeria, It is important to know the characteristics of diatomite beforeusing it. In this case, characterization was carried out by chemical, thermal analysisand scanning electron microscope. The results show that crude kieselguhr is formedof several components and in particular silica, alumina and calcium carbonates. It hasa extremely fine grained and highly absorbent material due to porosity over 72% andhas honeycomb like structure. The results obtained by simultaneous analyses,Differential Scanning Calorimetry (DSC) and Thermogravimetry (TGA) for calcineddiatomite at different temperature, showed the loss of mass when the temperature isincreased and revealed that the diatomite has four mass losses and showed differenttransformation (exothermic and endothermic) at different temperature.