Porous glass ceramic composition and method for manufacturing the same
AssigneesUniversità Di Padova, King Abdul Aziz City for Science and Technology
InventorsMohammed A. Binhussain, Paolo Colombo, Enrico Bernardo, Majed A. Binmajed, Mauro Marangoni, Hamad H. Atalasi, Amer M. Alajmi, Abdulaziz Altamimi
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Abstract
The invention provides a porous glass ceramic composition manufactured using conventional raw materials and one or more waste materials, wherein the waste materials are capable of producing glass forming oxides, glass modifying oxides and pore forming oxides. The waste materials are selected from a group that includes cullet, pozzolanic waste and fly ash. The invention also provides a method for manufacturing the porous glass ceramic composition.
Claims21
A method for manufacturing a porous glass ceramic composition, the method comprising:
- grinding each raw material of at least one raw material independently, wherein a raw material of the at least one raw material is selected from a raw material group comprising pozzolanic waste, cullet and clay;
- sieving each raw material of the at least one raw material independently to filter out particles having diameter more than about 90 microns;
- mixing the at least one raw material in response to sieving to obtain a homogenous mixture;
- drying the homogenous mixture to obtain a dried homogenous mixture;
- pressing the dried homogenous mixture;
- and
- firing the dried homogenous mixture at a temperature of about 800 degree Celsius (° C.) to about 1150° C., wherein the temperature is decreased with a rate of about 120° C. per minute to about 40° C. per minute until the temperature reaches 800° C., wherein the temperature is gradually decreased to room temperature for retaining porosity of the porous glass ceramic composition.
A method for manufacturing a light weight porous glass ceramic composition, the method comprising:
- grinding each raw material of at least one raw material independently, wherein a raw material of the at least one raw material is selected from a raw material group comprising pozzolanic waste, cullet and clay;
- sieving each raw material of the at least one raw material independently to filter out particles having diameter more than about 90 microns;
- mixing the at least one raw material in response to sieving to obtain a homogenous mixture;
- drying the homogenous mixture to obtain a dried homogenous mixture;
- dispersing the dried homogenous mixture on an iron plate;
- moisturizing the dried homogenous mixture on the iron plate with water to obtain a moisturized homogenous mixture;
- placing the moisturized homogenous mixture on the iron plate in an agglomerator;
- and
- firing the moisturized homogenous mixture at a temperature of about 600° C. to about 1200° C.
A composition of a porous glass ceramic comprising about 50 wt % to about 70 wt % of silicon dioxide (SiO2), about 5 wt % to about 35 wt % of alumina (Al2O3), about 5 wt % to about 12 wt % of calcium oxide (CaO), about 5 wt % to about 20 wt % of sodium oxide (Na2O), about 0.5 wt % to about 1.5 wt % of titanium dioxide (TiO2), and about 2 wt % to about 10 wt % of ferric oxide (Fe2O3).
Dependencies are inferred from the claim text.