Silicates with a high silica content, especially lead or alkaline earth metal silicates, compositions containing them, process for obtaining them and vitrifiable composition, glass obtained, filler and pigment based on these silicates

摘要

the present invention relates to a product comprising a silicate nuoveau metal molar ratio of silica and metal oxide is at least 2, advantageously between 3 and 5.;this product is characterized by the fact that it is not a loss on ignition of between 500 and 900 c significantly and it is amorphous, isotropic.;this may be, in particular, a silicate, silicate of lead is the product of a basis for a new batch.;the present invention also includes a process for the manufacture of iron according to the invention.;this process is characterized by the fact that it is a solution of an alkali silicate, be a solution of a soluble salt and a soluble metal silicate to prepare the way forat least a portion of the alkali oxide in silicate by metal oxide.;the present invention is mainly applied in factory.