Please wait, while we are loading the content...
Please wait, while we are loading the content...
Content Provider | Bangiya Bijnan Parishad |
---|---|
Author | বন্দ্যোপাধ্যায়, রবিন Bandyopadhyay, Rabin |
Description | অ্যালুমিনিয়াম নিষ্কাশনের প্রধান খনিজ পদার্থ হল বক্সাইট যা পৃথিবীর সর্বত্রই পাওয়া যায়। পৃথিবীর মধ্যে ভারতের বক্সাইট ই সর্বোৎকৃষ্ট। বক্সাইট ছাড়াও একটি অতি সহজলভ্য প্রকৃতিজাত পদার্থ, মাটি থেকেও অ্যালুমিনিয়াম পাওয়া যায়। মাটি থেকে প্রাপ্ত অ্যালুমিনা থেকে দুটি অবাঞ্ছিত পদার্থ যথা সিলিকা ও লোহা দূর করা হয় অ্যাসিড ও ক্ষার পদ্ধতিতে। এছাড়া মাটি থেকে অ্যালুমিনিয়াম নিষ্কাশনের জন্য এক আধুনিক জার্মান পদ্ধতির বিবরণও এই প্রবন্ধে পাওয়া যায়। The main mineral of aluminum extraction is bauxite, which is found everywhere in the world. India has the best bauxite in the world. In addition to bauxite, aluminum is also available from the soil, a very readily available material. Two unwanted substances, such as silica and iron, are removed from the alumina obtained from the soil by the acid and alkali technique. Besides this, a modern German method for the extraction of aluminum from the soil is discussed in the article in detail. |
Page Count | 4 |
File Format | |
Language | Bengali |
Publisher | বঙ্গীয় বিজ্ঞান পরিষদ Bangiya Bijnan Parishad |
Publisher Date | 1951-03-01 |
Publisher Place | কলকাতা Calcutta |
Requires | PDF viewer Plugin |
Access Restriction | Open |
Subject Keyword | বক্সাইট সিলিকা লাইম - সোডা সিনটার পদ্ধতি অ্যালুমিনিয়াম হাইড্রোক্সাইড অ্যাসিড পদ্ধতি Aluminum Hydroxide Acid Method Lime Soda Sinter Method Bauxite Silica Inorganic Chemistry সোডিয়াম সালফেট Sodium Sulfate |
Alternative Title | Mati Theke Aluminium |
Content Type | Text |
Educational Use | Reading Self Learning |
Education Level | Class XI Class XII |
Resource Type | Article |
Subject | Inorganic Chemistry |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
Sl. | Authority | Responsibilities | Communication Details |
---|---|---|---|
1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |