发明名称 Method For Reducing Elemental Sulfur In Gypsum Products
摘要 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.
申请公布号 US2017121183(A1) 申请公布日期 2017.05.04
申请号 US201514931766 申请日期 2015.11.03
申请人 CertainTeed Gypsum, Inc. 发明人 College John W.;Lee Sang-Ho;Hilton Chris;Kiang Yu-Zhi;Lai Choung-Houng;Glavin George;Ilyashenko Helen
分类号 C01F11/46 主分类号 C01F11/46
代理机构 代理人
主权项 1. A method for reducing of presence of elemental sulfur in a gypsum product, the method comprising the following steps: providing stucco to be used in the production of the gypsum product, the stucco including a level of elemental sulfur; mixing copper into the stucco; allowing the copper to react with the elemental sulfur, the reaction reducing the level of elemental sulfur within the stucco; utilizing the stucco with the reduced level of elemental sulfur in the production of gypsum product.
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