NDLI: Recycling kiln bypass dust into valuable materials

Content Provider	IEEE Xplore Digital Library
Author	Forinton, J.
Copyright Year	2013
Abstract	A new process has been developed for processing chlorine-bypass-dust into new materials that can be sold or used in the cement kiln. Bypass dust is the dust that is rejected from a kiln system in order to lower the chlorine or alkali content of the produced clinker. Many cement plants have routinely landfilled this dust over many years. The strategic concept of "zero waste" is the basis for this system, but other smaller reasons also exist for its development: · The landfill disposal costs are high in some areas. · Bypass dust, which is typically wasted, has a unit cost of 20-30% of the cost per ton of producing clinker - depending on the cement making process type - and this cost can be recuperated. · For environmental reasons it may be beneficial to reduce the landfill area within the overall plant site area. · An increase in alternative fuels may cause an increase in bypass dust that needs to be extracted, thereby, causing higher disposal specific production costs. · The sales price of salt runs at approximately 350 USD/t which is potentially a new income stream for the plant. The dust reduction system is made up of the following sections: 1. Washing of bypass dust with water; 2. Filtration to obtain a salt solution (brine); 3. Chemical treatment (purification and conditioning of the brine); 4. Evaporation of this clean-neutralized brine to obtain the alkali-salts. The products of the system are: 1. Raw meal, low in alkalis and chlorine, that can be directly used as kiln feed. 2. High purity salts that can be used for food, de-icing roads, or making fertilizer. 3. Heavy metals sludge that can be treated separately to obtain valuable metals. A pilot plant has been installed with positive results and now the first industrial-sized plant is under construction.
Sponsorship	IEEE Ind. Appl. Soc.
Starting Page	1
Ending Page	6
File Size	433362
Page Count	6
File Format	PDF
ISBN	9781467355520
ISSN	21559155
e-ISBN	9781467355537
DOI	10.1109/CITCON.2013.6525279
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-04-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Kilns Metals Water resources Chemicals Production Materials Filtration
Content Type	Text
Resource Type	Article

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

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