Removal of sand impurities in wet processing

Quartz glass with low content of hydroxyl and high purity and method for preparing the same

RECOVERING SAND, BENTONITE AND ORGANICS FROM FOUNDRY SAND WASTE

Purification of quartz powders by removal of microparticles of refractory materials

Preparation of a quartz glass body in a multi-chamber oven

Method and apparatus for washing and grading silica sand for glass production

PREPARATION OF A QUARTZ GLASS BODY IN A HANGING SINTER CRUCIBLE

Preparation of quartz glass bodies with dew point monitoring in the melting oven

Preparation of an opaque quartz glass body

Preparation of a quartz glass body in a multi-chamber oven

Preparation of carbon-doped silicon dioxide granulate as an intermediate in the preparation of quartz glass

Material processing apparatus

HIGH-PURITY SILICON DIOXIDE GRANULES FOR QUARTZ GLASS APPLICATIONS AND METHOD FOR PRODUCING SAID GRANULES

Froth flotation separation and analysis

Methods for producing crucibles with a reduced amount of bubbles

METHOD FOR PRODUCING A HIGHLY PURE QUARTZ GRANULATE

Production of Glass

LIME GLASS BATCH COMPOSITION

Mixture for the production of an amber glass, amber glass, method for the production of tubes and blanks of tinted bulbs, and tinted bulbs obtained with said glass

Fluorescence observing apparatus and fluorescence measuring apparatus

Process for treating synthetic silica powder and synthetic silica powder treated thereof

Method of making alkali metal silicate glass, feedstock, and glass article formed therefrom

Method for the production of amber glass with reduced sulfur-containing emissions

Low iron silica sand product and method of making same