Feed Material for Producing Flint Glass using Submerged Combustion Melting
A vitrifiable feed material for producing flint glass by way of a process that uses submerged combustion melting includes a base glass portion, an oxidizing agent, and a decolorant. The base glass portion includes an SiO 2 contributor, an Na 2 O contributor, and a CaO contributor to provide SiO 2 , Na 2 O, and CaO, respectively, to a glass melt when melted therein. The oxidizing agent may be a sulfate compound in an amount ranging from 0.20 wt % to 0.50 wt % as expressed as SO 3 based on the total weight of the vitrifiable feed material, and the decolorant may be selenium in an amount ranging from 0.008 wt % to 0.016 wt % or manganese oxide in an amount ranging from 0.1 wt % to 0.2 wt % based on the total weight of the vitrifiable feed material.
1 . A vitrifiable feed material for producing flint glass by way of a process that uses submerged combustion melting, the vitrifiable feed material comprising:
a base glass portion that includes an SiO 2 contributor, an Na 2 O contributor, and a CaO contributor to provide SiO 2 , Na 2 O, and CaO, respectively, to an agitated glass melt when melted therein;
a sulfate compound in an amount ranging from 0.20 wt % to 0.50 wt % as expressed as SO 3 based on the total weight of the vitrifiable feed material; and
selenium in an amount ranging from 0.008 wt % to 0.016 wt % or manganese oxide in an amount ranging from 0.1 wt % to 0.2 wt % based on the total weight of the vitrifiable feed material.
2 . The vitrifiable feed material set forth in claim 1 , wherein the base glass portion further includes an Al 2 O 3 contributor.
3 . The vitrifiable feed material set forth in claim 1 , wherein the base glass portion further includes flint cullet.
4 . The vitrifiable feed material set forth in claim 3 , wherein the flint cullet constitutes up to 80 wt % of the base glass portion.
5 . The vitrifiable feed material set forth in claim 1 , wherein the sulfate compound includes sodium sulfate.
6 . A vitrifiable feed material for producing flint glass by way of a process that uses submerged combustion melting, the vitrifiable feed material comprising:
a base glass portion that includes an SiO 2 contributor, an Na 2 O contributor, and a CaO contributor to provide SiO 2 , Na 2 O, and CaO, respectively, to an agitated glass melt when melted therein;
an oxidizing agent; and
selenium in an amount ranging from 0.008 wt % to 0.016 wt % or manganese oxide in an amount ranging from 0.1 wt % to 0.2 wt % based on the total weight of the vitrifiable feed material.
7 . The vitrifiable feed material set forth in claim 6 , wherein the oxidizing agent is a sulfate compound.
8 . The vitrifiable feed material set forth in claim 7 , wherein the sulfate is present in an amount ranging from 0.20 wt % to 0.50 wt % as expressed as SO 3 based on the total weight of the vitrifiable feed material
9 . The vitrifiable feed material set forth in claim 7 , wherein the sulfate compound is sodium sulfate.
10 . The vitrifiable feed material set forth in claim 6 , wherein the base glass portion further includes an Al 2 O 3 contributor.
11 . The vitrifiable feed material set forth in claim 6 , wherein the base glass portion further includes flint cullet.
12 . The vitrifiable feed material set forth in claim 11 , wherein the flint cullet constitutes up to 80 wt % of the base glass portion.