In the glass production process, a mixture of sand is cooked at more than 1000 degrees Celsius.
This process is done in a special oven. Because of the dusty raw material, ashes and dust are deposited on top of the oven. This layer acts like an insulation and disrupts the cooling of the oven.
Improper cooling leads to low efficiency and higher fuel consumption, and the floating dust is a health hazard for the operators. The dust can also contaminate the final products (bottles or flat glasses).