Method for reducing elemental sulfur in gypsum products
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United States of America Patent
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May 23, 2017
Grant Date -
May 4, 2017
app pub date -
Nov 3, 2015
filing date -
Nov 3, 2015
priority date (Note) -
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Abstract
Disclosed are various methods for reducing levels of elemental sulfur within gypsum products such as wall board. Gypsum sometimes includes increased levels of elemental sulfur. Such sulfur can be corrosive and otherwise harmful at elevated levels. The disclosure contemplates reacting the elemental sulfur with copper to copper sulfide. This reaction has the benefit of reducing the levels of elemental sulfur present within the final gypsum product. The copper can be added at any of a variety of locations in the manufacturing process. This is a very efficient method for reducing elemental sulfur in the production of gypsum products.
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