초록 ▼

A process of forming glass balls by treatment of particulate vitreous material and a second material comprising carbon material and a carbonated salt. The process is carried out at a temperature, for the particular particulate vitreous material, which corresponds to a viscosity of from about 106 to

A process of forming glass balls by treatment of particulate vitreous material and a second material comprising carbon material and a carbonated salt. The process is carried out at a temperature, for the particular particulate vitreous material, which corresponds to a viscosity of from about 106 to about 103.5 poises with mixing and agitation. The apparatus includes a furnace having a tube (4) adapted to rotate about an horizontal or inclined axis, delivery means (10, 12, 14) to the tube for the materials to be treated, and heating means (8, 20) for heating the tube and the bed of material from both an external and internal location.

대표청구항 ▼

Process of making balls from particulate vitreous material comprising: (a) mixing carbon in a free state and a substantial portion of a carbonated salt, said carbonated salt capable of decomposing under heat in the presence of carbon at a temperature, for said particulate vitreous material, correspo

Process of making balls from particulate vitreous material comprising: (a) mixing carbon in a free state and a substantial portion of a carbonated salt, said carbonated salt capable of decomposing under heat in the presence of carbon at a temperature, for said particulate vitreous material, corresponding to a viscosity of from about 106 to about 103.5 poises, and (b) both mixing and agitating both said particulate vitreous material and mixture of (a) at said temperature whereby said particulate vitreous material takes a spherical shape by action of surface tension.