公开(公告)号：US20080022903A1

公开(公告)日：2008-01-31

申请号：US11491916

申请日：2006-07-25

Applicant: Rakesh Kumar ,  Sanjay Kumar ,  Amitava Bandopadhaya ,  Surya Pratap Mehrotra

Inventor： Rakesh Kumar ,  Sanjay Kumar ,  Amitava Bandopadhaya ,  Surya Pratap Mehrotra

IPC: C04B7/19 ,  C04B7/14 ,  C04B2/10

CPC classification number: C04B28/04 ,  C04B18/141 ,  Y02W30/94 ,  C04B20/008 ,  C04B20/026

Abstract: Accordingly, the present invention provides an improved process for the production of Portland slag cement using granulated blast furnace slag, which comprises: (viii) forming of cement clinker by known process, (ix) ball-milling of cement clinker for a period ranging between 30-60 minutes in dry condition, (x) reducing size of granulated blast furnace slag by any process to obtain the size in the range between 210 to 100 μm for using as feed for attrition mill, (xi) wet milling of granulated blast furnace slag for a period ranging between 5-15 minutes in an attrition mill using granulated blast furnace slag to water ratio in the range of 1:1 to 1:2 and granulated blast furnace slag to grinding bail ratio in the range of 1:5 to 1:15, (xii) removing water from the slurry obtained after attrition milling by known process, (xiii) drying of the obtained slurry by known process, (xiv) mixing intimately of: attrition milled slag obtain in step (vi) in the range of: 50 to 95% by weight ball-milled clinker obtain in step (ii) in the range of: 05 to 45% by weight gypsum in the range of: 01 to 05% by weight for a period in the range of 15 to 30 minutes.

Abstract translation: 因此，本发明提供了一种使用造粒高炉矿渣生产波特兰矿渣水泥的改进方法，其包括：（viii）通过已知方法形成水泥熟料，（ix）水泥熟料的球磨，时间范围 在干燥条件下30-60分钟，（x）通过任何工艺减少造粒高炉矿渣的尺寸，以获得用于磨粉机进料的210至100um之间的尺寸，（xi）造粒高炉的湿磨 在磨粉机中使用造粒高炉矿渣与水的比例在1：1至1：2范围内的炉渣在5-15分钟之间，并将造粒高炉矿渣与1：5至 （xii）通过已知方法磨碎后得到的浆料中的水，（xiii）通过已知方法干燥所获得的浆料，（xiv）密切混合：步骤（vi）中获得的磨碎的炉渣 范围：50〜95重量％ 研磨熟料在步骤（ii）中获得的范围为：05至45重量％的石膏，其范围为：01至05重量％，范围为15至30分钟。

公开(公告)号：US07410537B2

公开(公告)日：2008-08-12

申请号：US11491916

申请日：2006-07-25

Applicant: Rakesh Kumar ,  Sanjay Kumar ,  Amitava Bandopadhaya ,  Surya Pratap Mehrotra

Inventor： Rakesh Kumar ,  Sanjay Kumar ,  Amitava Bandopadhaya ,  Surya Pratap Mehrotra

IPC: C04B7/04

CPC classification number: C04B28/04 ,  C04B18/141 ,  Y02W30/94 ,  C04B20/008 ,  C04B20/026

Abstract: Accordingly, the present invention provides an improved process for the production of Portland slag cement using granulated blast furnace slag, which comprises: (viii) forming of cement clinker by known process, (ix) ball-milling of cement clinker for a period ranging between 30-60 minutes in dry condition, (x) reducing size of granulated blast furnace slag by any process to obtain the size in the range between 210 to 100 μm for using as feed for attrition mill, (xi) wet milling of granulated blast furnace slag for a period ranging between 5-15 minutes in an attrition mill using granulated blast furnace slag to water ratio in the range of 1:1 to 1:2 and granulated blast furnace slag to grinding bail ratio in the range of 1:5 to 1:15, (xii) removing water from the slurry obtained after attrition milling by known process, (xiii) drying of the obtained slurry by known process, (xiv) mixing intimately of: attrition milled slag obtain in step (vi) in the range of: 50 to 95% by weight ball-milled clinker obtain in step (ii) in the range of: 05 to 45% by weight gypsum in the range of: 01 to 05% by weight for a period in the range of 15 to 30 minutes.

Abstract translation: 因此，本发明提供了一种使用造粒高炉矿渣生产波特兰矿渣水泥的改进方法，其包括：（viii）通过已知方法形成水泥熟料，（ix）水泥熟料的球磨，时间范围 在干燥条件下30-60分钟，（x）通过任何工艺减少造粒高炉矿渣的尺寸，以获得用于磨粉机进料的210至100um之间的尺寸，（xi）造粒高炉的湿磨 在磨粉机中使用造粒高炉矿渣与水的比例在1：1至1：2范围内的炉渣在5-15分钟之间，并将造粒高炉矿渣与1：5至 （xii）通过已知方法磨碎后得到的浆料中的水，（xiii）通过已知方法干燥所获得的浆料，（xiv）密切混合：步骤（vi）中获得的磨碎的炉渣 范围：50〜95重量％ 研磨熟料在步骤（ii）中获得的范围为：05至45重量％的石膏，其范围为：01至05重量％，范围为15至30分钟。