The transformation of kaolinite into metakaolinite by thermal activation to obtain highly active aluminosilicate is commonly known. In addition kaolin, the high content in coal mining waste another potential source for obtaining an precursor, thereby protecting environment and adding value industrial wastes. this paper, kaolinite-based ash slime (KAS) was calcined at temperatures ranging from 4...

The building industry is a major contributor to climate change since it emits massive amounts of greenhouse gases. As result this research, cement composite brick with partial substitutes and waste material was developed. fresh formula mixture hardened concrete were tested for physical, mechanical, thermal properties ensure that the assumptions true. In study role zaolite, metakaolinite microme...

Most of calcium silicate hydrate or calcium aluminosilicate hydrate, CS(A)H, and related phases are relevant to Cement industry and have potential as geothermal well sealants as well as autoclaved construction materials. The CS(A)H system is highly complex and is comprised of crystalline to amorphous phases with variable composition that build up a wide family of phases, which are interesting f...

Abstract Kaolin is widespread as a result of the alteration in San José Sn-Ag deposit located Oruro, Bolivia. This study presents chemical, mineralogical and thermal characterization kaolinitic deposit, which necessary to determine their optimal applications. Mineral phases these white silty materials were determined by X-ray diffraction (XRD) are quartz, kaolinite, K-feldspar, muscovite, illit...

South African discard coal fines and K2CO3 blends were heated in a laboratory-scale rotary kiln to produce ashes for H2SO4 leaching tests. The optimized conditions of 6.12 mol.dm3 (M) H2SO4, solid liquid ratios 1:5 1:10, 8o°C 8 hours used. was added increase the dissolution efficiency K. objective determine if Al present metakaolinite (Al2O3.2SiO2), Al, K, Ti alumino-silicate glasses, rutile (T...

Inorganic polymers were synthesized from dehydroxylated aluminosilicate clay (metakaolinite) condensed with sodium silicate in a highly alkaline environment. The thermal treatment of aluminosilicate materials causes changes in their structure with an increase in the amorphous phase. For that kind of structural change XRD analysis is not appropriate, so those changes are currently assessed by in...

• Zeolite type A was synthesized from natural resources under mild conditions. Textural properties and crystallinity can be controlled through synthesis Microporosity plays a key role on CO 2 /N /H O selectivies. Under dry conditions, is readily desorbed at moderate temperatures. The presence of water hinders the desorption physisorbed species. In light urgent need reducing atmospheric emission...

Sodium bearing waste (SBW) having a high loading of sodium salts (typical of the SBW stored at Hanford) must be pretreated before it can be incorporated in a hydroceramic waste form. One such method, using thermal decomposition of the nitrate/nitrite ions in the SBW is described. Calcination of the SBW with sucrose and various aluminosilicate sources produced a granular solid that was solidifie...