Paste Mixing
Paste Mixing : During the paste-mixing process, lead oxide and water are blended in a mixer to form a thick paste. Diluted sulfuric acid is then added slowly with constant mixing and cooling until the desired paste consistency and density are attained. The sulfuric acid forms lead sulfate, which in addition to expanding the past and giving it greater porosity, supplies a necessary binding cement so that the dry plate can be handled without the loss of significant amounts of material
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