Patents by Inventor Anca ITUL
Anca ITUL has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11111177Abstract: The present invention relates to a method for manufacturing a binder with high ? belite content comprising the steps: a) providing a starting material by selecting one raw material having a Ca/Si molar ratio of 1.5 to 2.5 or by mixing two or more raw materials to obtain a starting material with the Ca/Si molar ratio of 1.5 to 2.5; b) hydrothermal treatment of the starting material produced in step a) in an autoclave at a temperature of 100 to 300° C. and a retention time of 0.1 to 24 h, wherein the water/solids ratio is from 0.1 to 100 to provide an intermediate product; c) annealing the intermediate product obtained in step b) in a flash calciner at 620 to 630° C., wherein the retention time is 1-30 seconds.Type: GrantFiled: September 12, 2018Date of Patent: September 7, 2021Assignee: HConnect 2 GmbHInventors: Anca Itul, Mohsen Ben Haha
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Publication number: 20200262751Abstract: The present invention relates to a method for manufacturing a binder with high ? belite content comprising the steps: a) providing a starting material by selecting one raw material having a Ca/Si molar ratio of 1.5 to 2.5 or by mixing two or more raw materials to obtain a starting material with the Ca/Si molar ratio of 1.5 to 2.5; b) hydrothermal treatment of the starting material produced in step a) in an autoclave at a temperature of 100 to 300° C. and a retention time of 0.1 to 24h, wherein the water/solids ratio is from 0.1 to 100 to provide an intermediate product; c) annealing the intermediate product obtained in step b) in a flash calciner at 620 to 630° C., wherein the retention time is 1-30 seconds.Type: ApplicationFiled: September 12, 2018Publication date: August 20, 2020Applicant: HeidelbergCement AGInventors: Anca ITUL, Mohsen BEN HAHA
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Patent number: 10065888Abstract: 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.Type: GrantFiled: May 7, 2014Date of Patent: September 4, 2018Assignee: HEIDELBERGCEMENT AGInventors: Dirk Schmitt, Mohsen Ben Haha, Anca Itul, Maciej Zajac, Nicolas Spencer
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Publication number: 20180186695Abstract: The invention relates to a method for binding of carbon dioxide, comprising: providing a starting material which comprises sources for CaO and SiO2 and optionally also Al, Fe and/or Mg, hydrothermally treating the starting material in an autoclave at 50 to 300° C., tempering at 350 to 600° C., and hardening the resulting material with carbon dioxide. The invention further relates to building elements which are obtained by hardening a material according to the method.Type: ApplicationFiled: June 25, 2016Publication date: July 5, 2018Applicant: HeidelbergCement AGInventors: Anca ITUL, Mohsen BEN HAHA, Nicholas SPENCER
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Patent number: 9718731Abstract: 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.Type: GrantFiled: May 7, 2014Date of Patent: August 1, 2017Assignee: HEIDELBERGCEMENT AGInventors: Frank Bullerjahn, Mohsen Ben Haha, Nicolas Spencer, Anca Itul, Dirk Schmitt
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Patent number: 9604879Abstract: 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.Type: GrantFiled: May 7, 2014Date of Patent: March 28, 2017Assignee: HEIDELBERGCEMENT AGInventors: Dirk Schmitt, Mohsen Ben Haha, Anca Itul, Nicolas Spencer
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Publication number: 20160107933Abstract: 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.Type: ApplicationFiled: May 7, 2014Publication date: April 21, 2016Applicant: HEIDELBERGCEMENT AGInventors: Dirk SCHMITT, Mohsen BEN HAHA, Anca ITUL, Nicolas SPENCER
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Publication number: 20160102021Abstract: 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.Type: ApplicationFiled: May 7, 2014Publication date: April 14, 2016Applicant: HEIDELBERGCEMENT AGInventors: Frank BULLERJAHN, Mohsen BEN HAHA, Nicolas SPENCER, Anca ITUL, Dirk SCHMITT
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Publication number: 20160075598Abstract: 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.Type: ApplicationFiled: May 7, 2014Publication date: March 17, 2016Applicant: HEIDELBERGCEMENT AGInventors: Dirk SCHMITT, Mohsen BEN HAHA, Anca ITUL, Maciej ZAJAC, Nicolas SPENCER