公开(公告)号：WO2019170657A1

公开(公告)日：2019-09-12

申请号：PCT/EP2019/055418

申请日：2019-03-05

Applicant: YARA INTERNATIONAL ASA

Inventor： FRANKE, Wolfram ,  THOMMESEN, Hilde

IPC: C04B40/00 ,  C04B28/02 ,  C04B103/10

Abstract: The present application relates to a setting and hardening accelerator for a cement, mortar or concrete composition, optionally comprising cement replacement materials (CSMs). The accelerator composition comprises an aqueous nitrate solution and an alkaline hydroxide. Particularly, the aqueous accelerator composition comprises between 30 and 55 w/w % of a nitrate salt as a nitrate solution and between 0.02 and 0.1 w/w% of an alkaline hydroxide, which is dissolved in the nitrate solution and, optionally, as a hydroxide precipitate in the accelerator composition, wherein the accelerator composition has a pH of at least 9.0. In case the cement, mortar or concrete composition comprises CSMs, the accelerator composition has a pH of at least 12.0. The application furthermore relates to the use of the accelerator composition according to the present application and to a method for accelerating a cement, mortar or concrete composition by reacting the composition with the accelerator according to the application, in particular at cold temperatures.

公开(公告)号：WO2017077103A1

公开(公告)日：2017-05-11

申请号：PCT/EP2016/076803

申请日：2016-11-07

Applicant: YARA INTERNATIONAL ASA

Inventor： FRANKE, Wolfram ,  THOMMESEN, Hilde ,  CILLUFFO, Giuseppe ,  ROMEGIALLI, Gianluca ,  TORABZADEGAN, Mehrdad

IPC: C01F11/44 ,  C04B28/02 ,  C04B40/00 ,  C04B103/12 ,  C04B111/00

CPC classification number: C04B40/0042 ,  C01F11/44 ,  C01P2004/60 ,  C01P2006/20 ,  C04B28/02 ,  C04B2103/12 ,  C04B2111/00637 ,  Y02W30/94 ,  C04B14/06 ,  C04B20/008 ,  C04B22/085 ,  C04B14/08 ,  C04B18/146 ,  C04B40/0608

Abstract: The invention relates to a solid particulate calcium nitrate composition having particles with an average particle size of between 0.1 and 1 mm and comprising an anti-caking agent, wherein the anti-caking agent consists of a solid particulate silicate with an average particle size of between 0.05 and 750 μm. The invention furthermore relates to a pre-blend binder composition comprising such a solid particulate calcium nitrate composition. Also a dry mortar mix or tile adhesive composition and a dry concrete mix comprising an aggregate and such a pre-blend binder composition. Also a method for producing a solid particulate calcium nitrate composition, the use of a solid particulate silicate as anti-caking agent for a solid particulate calcium nitrate composition and the use of a solid particulate calcium nitrate composition as a setting accelerator for cementitious pre-blend binder composition are disclosed.

Abstract translation: 本发明涉及一种固体颗粒硝酸钙组合物，其具有平均颗粒尺寸在0.1和1mm之间并包含抗结块剂的颗粒，其中抗结块剂由固体颗粒 平均粒度为0.05-750μm的硅酸盐。 本发明还涉及包含这种固体颗粒硝酸钙组合物的预混合粘合剂组合物。 还有一种干砂浆混合物或瓷砖粘合剂组合物和一种干混凝土混合物，其包含骨料和这种预混合粘合剂组合物。 还有一种生产固体颗粒硝酸钙组合物的方法，固体颗粒硅酸盐作为抗结块剂用于固体颗粒硝酸钙组合物的应用，以及固体颗粒硝酸钙组合物作为凝结预混合物的凝结促进剂的用途 粘合剂组合物被公开。