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Production Process


Production process of glass

 

(1) raw materials pre processing. The bulk raw materials (quartz sand, soda ash, limestone, feldspar, etc.) are crushed to dry the wet raw materials, and the iron-containing raw materials are removed to ensure the quality of glass.

 

(2)Preparation of batch.

 

(3) melting. Glass batch is heated in a tank or crucible kiln at high temperature (1550-1600 degrees) to form a homogeneous, bubble-free liquid glass which meets the molding requirements.

 

(4) forming. The liquid glass is processed into products of the desired shape, such as plates, containers, etc.

 

(5)Heat treatment. Through annealing, quenching and other processes, the stress, phase separation or crystallization in the glass can be eliminated or produced, and the structural state of the glass can be changed.