Verisil^®

Sodium silicate (also called "water glass") is an important, multifunctional chemical additive used in the deinking of waste paper and in bleaching wood-based fibrous materials (e.g. ground wood pulp, TMP, chemical pulp) with peroxide; it is characterized by a good price-performance ratio.

However, when it is used in large quantities, the "standard water glass" may have undesired side effects, e.g. deposits in tanks, tubes, valves and production units.

With the Verisil (waste paper treatment) and the Blancosil (wood pulp bleaching) product lines, Woellner has developed a series of specialized, powerful alkali silicate products. Due to their optimized molecule structure and synergistic combinations with biodegradable additives, these products are much more effective in the process, without producing undesired side effects. They can also be used in smaller quantities than alternative products.

Verisil and Blancosil products offer the following important advantages:

• Trouble-free storage and pumping of the concentrates
• Low tendency to form deposits
• Improved stabilizing effect in peroxide bleaching systems
• Optimized alkali and buffer properties
• Low COD values in the circuit and waste water
• Optimized cost of chemicals

With comprehensive circuit tests and on-site lab tests, our competent technical service supports our partners in the paper industry in developing optimized formulas and processes.

Our list of products gives you an overview of available Verisil and Blancosil products and other additives; individual product descriptions are available on request.

For more information on our customer service for the Verisil products, click here.