公开(公告)号：US09604879B2

公开(公告)日：2017-03-28

申请号：US14787006

申请日：2014-05-07

Applicant: HEIDELBERGCEMENT AG

Inventor： Dirk Schmitt ,  Mohsen Ben Haha ,  Anca Itul ,  Nicolas Spencer

IPC: C04B7/345 ,  C04B22/00 ,  C04B28/04 ,  C04B40/00 ,  C04B7/14 ,  C04B7/26 ,  C04B7/43 ,  C04B28/08 ,  C04B103/12 ,  C04B103/14

CPC classification number: C04B22/0093 ,  C04B7/14 ,  C04B7/26 ,  C04B7/345 ,  C04B7/43 ,  C04B28/04 ,  C04B28/08 ,  C04B40/0028 ,  C04B2103/12 ,  C04B2103/14 ,  Y02P40/148 ,  C04B14/043

Abstract: The present invention relates to the use of a belite calcium aluminate obtainable in a method comprising the following steps: a) providing a starting material that has a molar Ca/(Si+Al+Fe) ratio from 1.0 to 3.5 and a molar Al/Si ratio from 100 to 0.1, b) mixing the raw materials, c) hydrothermal treating of the starting material mixture produced in step b) in an autoclave at a temperature from 100 to 300° C. and a residence time from 0.1 to 24 h, wherein the water/solids ratio is 0.1 to 100, d) tempering the intermediate product obtained in step c) at 350 to 600° C., wherein the heating rate is 10-6000° C./min and the residence time is 0.01-600 min as an accelerator for Portland cement.

公开(公告)号：US10065888B2

公开(公告)日：2018-09-04

申请号：US14787012

申请日：2014-05-07

Applicant: HEIDELBERGCEMENT AG

Inventor： Dirk Schmitt ,  Mohsen Ben Haha ,  Anca Itul ,  Maciej Zajac ,  Nicolas Spencer

IPC: C04B7/43 ,  C04B22/00 ,  C04B28/04 ,  C04B7/345 ,  C04B40/00 ,  C04B7/14 ,  C04B7/26 ,  C04B28/08 ,  C04B103/12 ,  C04B103/14

Abstract: The present invention relates to a method of enhancing the latent hydraulic and/or pozzolanic reactivity of materials, especially of waste and by-products, comprising the steps: providing a starting material containing sources for CaO and at least one of SiO2 and AI2O3 mixing the starting material with water at a water/solids ratio from 0.1 to 100 hydrothermal treating of the starting material mixed with water in an autoclave at a temperature of 100 to 300° C. and a residence time from 0.1 to 24 hours to provide an autoclaved product suitable as supplementary cementitious material.

公开(公告)号：US09718731B2

公开(公告)日：2017-08-01

申请号：US14787024

申请日：2014-05-07

Applicant: HEIDELBERGCEMENT AG

Inventor： Frank Bullerjahn ,  Mohsen Ben Haha ,  Nicolas Spencer ,  Anca Itul ,  Dirk Schmitt

IPC: C04B7/345 ,  C04B22/00 ,  C04B28/04 ,  C04B40/00 ,  C04B7/14 ,  C04B7/26 ,  C04B7/43 ,  C04B28/08 ,  C04B103/12 ,  C04B103/14

CPC classification number: C04B22/0093 ,  C04B7/14 ,  C04B7/26 ,  C04B7/345 ,  C04B7/43 ,  C04B28/04 ,  C04B28/08 ,  C04B40/0028 ,  C04B2103/12 ,  C04B2103/14 ,  Y02P40/148 ,  C04B14/043

Abstract: The present invention relates to a method for producing a binder comprising the following steps: a) providing a starting material, from raw materials, that has a molar (Ca+Mg)/(Si+Al+Fe) ratio from 1 to 3.5, a molar ratio Ca/Mg from 0.1 to 100, and a molar Al/Si ratio from 100 to 0.1, wherein constituents that are inert during the hydrothermal treatment in an autoclave are not taken into account for determination of the ratios, b) mixing the raw materials, c) hydrothermal treating of the starting material mixture produced in step b) in an autoclave at a temperature from 100 to 300° C. and a residence time from 0.1 to 24 h, wherein the water/solids ratio is 0.1 to 100, d) tempering the intermediate product obtained in step c) at 350 to 600° C., wherein the heating rate is 10-6000° C./min and the residence time is 0.01-600 min.