Method of Manufacturing Colored Chalk
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United States of America Patent
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May 9, 2019
app pub date -
Oct 29, 2018
filing date -
Oct 29, 2018
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Abstract
A method of manufacturing colored chalk. The method for manufacturing colored chalk includes preparing a colorant, combining the colorant with a volume of water, adding magnesium carbonate to the combination of water and colorant until a paste is formed, mixing the paste until the paste is homogenous, heating the paste in a kiln until the water is removed, and grinding a mass of colored magnesium carbonate into a powder having a desired fineness. In some embodiments, the colorant includes iron oxide, charcoal, or camellia sinensis leaves.
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