公开(公告)号：EP1688400A2

公开(公告)日：2006-08-09

申请号：EP06101260.5

申请日：2006-02-03

申请人： Finnsementti Oy

发明人： Heikkilä, Esa ,  Virtanen, Jorma

IPC分类号： C04B20/10 ,  C04B14/28 ,  C04B28/02

CPC分类号： C04B20/10 ,  C04B14/28 ,  C04B2111/28 ,  C04B20/0076 ,  C04B20/026 ,  C04B20/1025 ,  C04B20/1051 ,  C04B20/1037

摘要： The invention relates to an additive for additive comprising stone powder, in which the particle diameter is 2―1000 µm, which particles are coated with a substantially water-insoluble surface-active coating agent, and the use of the additive and a method for manufacturing the additive. The invention also relates to a method for improving the freeze-thaw durability of the concrete, and a concrete.

公开(公告)号：EP0821656A1

公开(公告)日：1998-02-04

申请号：EP96910049.0

申请日：1996-04-12

申请人： Finnsementti OY ,  KEMIRA PIGMENTS OY

发明人： ERIKSSON, Bo-Erik ,  MATTILA, Harri

IPC分类号： C01G49 ,  C04B22

CPC分类号： C04B22/149 ,  C01G49/14 ,  C04B2111/00112 ,  C04B2111/1081 ,  C04B20/023 ,  C04B22/0006

摘要： The invention concerns a method for treating ferrous sulphate for the preparation of ferrous sulphate hydrate usable for chromium reduction in cement manufacture. According to the invention, sulphuric acid containing ferrous sulphate obtained as a side product from titanium dioxide production and which contains at the most appr. 30 % by weight of sulphuric acid, is neutralized with a CaO-containing material, preferably cement, in an amount sufficient to give a pH-value to the end product which is 1.5 to 5, whereby the reaction temperature is allowed to increase to at the most 120 °C.

公开(公告)号：EP1688400A3

公开(公告)日：2008-12-24

申请号：EP06101260.5

申请日：2006-02-03

申请人： Finnsementti Oy

发明人： Heikkilä, Esa ,  Virtanen, Jorma

IPC分类号： C04B20/10 ,  C04B14/28 ,  C04B28/02

CPC分类号： C04B20/10 ,  C04B14/28 ,  C04B2111/28 ,  C04B20/0076 ,  C04B20/026 ,  C04B20/1025 ,  C04B20/1051 ,  C04B20/1037

摘要： The invention relates to an additive for additive comprising stone powder, in which the particle diameter is 2―1000 µm, which particles are coated with a substantially water-insoluble surface-active coating agent, and the use of the additive and a method for manufacturing the additive. The invention also relates to a method for improving the freeze-thaw durability of the concrete, and a concrete.

摘要翻译： 本发明涉及一种在添加剂添加剂包含石粉，其中，所述粒径为2€•1000微米，所述颗粒涂有基本上不溶于水的表面活性涂布剂，和使用该添加剂的和用于方法 制造该添加剂。 因此，本发明涉及用于改善混凝土的耐冻融性的方法，和一个混凝土。