公开(公告)号：US20090071379A1

公开(公告)日：2009-03-19

申请号：US12275437

申请日：2008-11-21

Applicant: Chett Boxley

Inventor： Chett Boxley

IPC: C04B14/00 ,  C04B35/64

CPC classification number: C04B18/08 ,  C04B18/021 ,  C04B20/1081 ,  C04B40/0039 ,  C04B2111/0075 ,  Y02W30/92 ,  Y10S106/01 ,  C04B20/023 ,  C04B20/04 ,  C04B22/064 ,  C04B22/10 ,  C04B22/0093 ,  C04B22/142 ,  C04B22/06

Abstract: A process for treating fly ash to render it highly usable as a concrete additive. A quantity of fly ash is obtained that contains carbon and which is considered unusable fly ash for concrete based upon foam index testing. The fly ash is mixed with a quantity of spray dryer ash (SDA) and water to initiate a geopolymerization reaction and form a geopolymerized fly ash. The geopolymerized fly ash is granulated. The geopolymerized fly ash is considered usable fly ash for concrete according to foam index testing. The geopolymerized fly ash may have a foam index less than 40%, and in some cases less than 20%, of the foam index of the untreated fly ash. An optional alkaline activator may be mixed with the fly ash and SDA to facilitate the geopolymerization reaction. The alkaline activator may contain an alkali metal hydroxide, carbonate, silicate, aluminate, or mixtures thereof.

Abstract translation: 用于处理飞灰以使其高度可用作混凝土添加剂的方法。 根据泡沫指数测试，获得含有碳的粉煤灰，并被认为是混凝土不可用的粉煤灰。 将飞灰与一定数量的喷雾干燥灰（SDA）和水混合以引发地质聚合反应并形成地质聚集的飞灰。 地质化的粉煤灰被造粒。 根据泡沫指数测试，地质聚合飞灰被认为是混凝土的可用粉煤灰。 地质聚集的飞灰可以具有小于未处理飞灰的泡沫指数的泡沫指数小于40％，并且在一些情况下小于20％。 可以将任选的碱性活化剂与飞灰和SDA混合以促进地质聚合反应。 碱性活化剂可以含有碱金属氢氧化物，碳酸盐，硅酸盐，铝酸盐或其混合物。