Johns Manville

Michael William Luka

Mark William Charbonneau

John Wayne Baker

Combustion burner panels, submerged combustion melters including one or more of the panels, and methods of using the same are disclosed. In certain embodiments, the burner panel includes a panel body having a first major surface defined by a lower fluid-cooled portion of the panel body, and a second major surface defined by an upper non-fluid cooled portion of the panel body. The panel body has at least one through passage extending from the first to the second major surface, the through passages accommodating a set of substantially concentric inner and outer conduits. The inner conduit forms a primary passage for fuel or oxidant, and the outer conduit forms a secondary passage between the outer conduit and the inner conduit for fuel or oxidant. A protective member is associated with each set. The burner panels promote burner life and melter campaign length.

Burner panels including dry-tip burners, submerged combustion melters, and methods

A system for controlling the pH of a formaldehyde-free aqueous binder composition used in the manufacture of glass fiber products. Following the formation of an aqueous binder composition, acid is added to the composition to reduce the pH to less than about 3.4. After the acid is combined with the aqueous binder composition, the pH of the composition is measured and then compared within a pre-set set point. The rate of acid addition is then adjusted thereby adjusting the pH of the composition such that the measured pH equals the set point pH. The pH measurement is preferably done before the addition of other additives to avoid interference by those additives.

Control of pH in formaldehyde-free binder systems

A system for controlling the pH of the process water used in conjunction with formaldehyde-free binder composition for glass fiber products. A base solution is introduced into the process water used to coat the glass fibers in the formaldehyde-free binder after the water is extracted from binder coated glass fibers when the pH of the process water in less than about 6.0. The addition of the base solution increases the pH of the process water to a range from about 8.0 to about 6.0 thereby reducing the risk of corrosion when the process water is recirculated.

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Littleton, CO, United States of America

Michael William Luka