党的二十大报告提出“推进新型工业化,加快建设制造强国、数字中国”“提高城市规划、建设、治理水平,打造宜居、韧性智慧城市”。国民经济和社会发展“十四五”规划和2035年远景目标更是强调了“完善城市信息模型平台和运行管理服务平...党的二十大报告提出“推进新型工业化,加快建设制造强国、数字中国”“提高城市规划、建设、治理水平,打造宜居、韧性智慧城市”。国民经济和社会发展“十四五”规划和2035年远景目标更是强调了“完善城市信息模型平台和运行管理服务平台,构建城市数据资源体系,推进城市数据大脑建设,探索建设数字孪生城市”。建筑信息模型(Building Information Modeling,以下简称BIM)通过集成建筑工程物理特征和功能属性,以多维、可视表达的数字化手段,串联起建筑策划、勘察、设计、施工、运营等阶段,实现了建筑全生命周期各参与方共享信息数据。BIM是城市信息模型平台的基本组成单元。展开更多
Coal preparation is an integral part of the coal commodity supply chain. This stage of post-mining, pre-utilization beneficiation uses low-cost separation technologies to remove unwanted mineral matter and moisture wh...Coal preparation is an integral part of the coal commodity supply chain. This stage of post-mining, pre-utilization beneficiation uses low-cost separation technologies to remove unwanted mineral matter and moisture which hinder the value of the coal product. Coal preparation plants typically employ several parallel circuits of cleaning and dewatering operations, with each circuit designed to optimally treat a specific size range of coal. Recent innovations in coal preparation have increased the efficiency and capac- ity of individual unit operations while reinforcing the standard parallel cleaning approach. This article, which describes the historical influences and state-of-the-art design for the various coal preparation unit operations, is organized to distinguish between coarse/intermediate coal cleaning and fine/ultrafine coal cleaning. Size reduction, screening, classification, cleaning, dewatering, waste disposal unit operations are particularly highlighted, with a special focus on the LI.S. design philosophy. Notable differences between the U.S. and international operations are described as appropriate.展开更多
文摘党的二十大报告提出“推进新型工业化,加快建设制造强国、数字中国”“提高城市规划、建设、治理水平,打造宜居、韧性智慧城市”。国民经济和社会发展“十四五”规划和2035年远景目标更是强调了“完善城市信息模型平台和运行管理服务平台,构建城市数据资源体系,推进城市数据大脑建设,探索建设数字孪生城市”。建筑信息模型(Building Information Modeling,以下简称BIM)通过集成建筑工程物理特征和功能属性,以多维、可视表达的数字化手段,串联起建筑策划、勘察、设计、施工、运营等阶段,实现了建筑全生命周期各参与方共享信息数据。BIM是城市信息模型平台的基本组成单元。
文摘Coal preparation is an integral part of the coal commodity supply chain. This stage of post-mining, pre-utilization beneficiation uses low-cost separation technologies to remove unwanted mineral matter and moisture which hinder the value of the coal product. Coal preparation plants typically employ several parallel circuits of cleaning and dewatering operations, with each circuit designed to optimally treat a specific size range of coal. Recent innovations in coal preparation have increased the efficiency and capac- ity of individual unit operations while reinforcing the standard parallel cleaning approach. This article, which describes the historical influences and state-of-the-art design for the various coal preparation unit operations, is organized to distinguish between coarse/intermediate coal cleaning and fine/ultrafine coal cleaning. Size reduction, screening, classification, cleaning, dewatering, waste disposal unit operations are particularly highlighted, with a special focus on the LI.S. design philosophy. Notable differences between the U.S. and international operations are described as appropriate.
