Calcium hydroxide contains impurities and appears gray; how to remove the discoloration? (Seeking help)
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We produce calcium hydroxide, but our product appears gray in color; this is likely due to the presence of impurities. Could someone please advise me on how to remove these impurities or how to decolorize the product so as to increase its whiteness? Thank you! You can also contact me directly; phone number: 13771771767, QQ: 156234423
If it’s impurities caused by limestone, they are very difficult to remove. It is recommended that when producing quicklime, marble with high purity be used as raw material, or cleaned shells can be used instead.