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    • 10. 发明授权
    • Utilization of deinking by-product in building materials
    • 副产品在建筑材料中的脱墨利用
    • US5496441A
    • 1996-03-05
    • US175119
    • 1993-12-29
    • Hoc N. Tran
    • Hoc N. Tran
    • C04B18/24C04B28/14D21H17/01
    • C04B28/145C04B18/243C04B2111/00603C04B2111/52Y02W30/97Y10S162/09
    • Deinking by-product from wastepaper recycling operations and pulp mill clarifier sludge are incorporated into drywall or other gypsum-based building products, such as building blocks. The deinking by-product or pulp mill clarifier sludge is diluted and mixed with stucco (calcium sulfate hemihydrate). The resulting slurry preferably is subjected to an initial dewatering, following the on-set of hardening of the gypsum, and drywall or other building product is formed from the dewatered material. A significant loading of fibrous material in the drywall sheet or other gypsum product is achieved using the procedure, imparting improved flexural strength to the product. The preferred procedure also may be used to incorporate virgin or recycled wood pulp into the building product.
    • 废纸回收作业中的副产物和纸浆厂澄清剂污泥的脱墨装入干法墙或其他石膏基建筑产品中,如建筑块。 将脱墨副产物或造纸厂澄清池污泥稀释并与灰泥(半水合硫酸钙)混合。 所得到的浆料优选在石膏硬化之后进行初始脱水,并且由脱水材料形成干墙或其它建筑产品。 使用该方法实现了在干墙板或其它石膏产品中显着加载纤维材料,赋予产品提高的抗弯强度。 优选的程序也可用于将原木或再生木浆并入建筑产品中。