KLI

Regeneration of used sand with sodium silicate binder by wet method and their core manufacturing

Metadata Downloads
Abstract
Organic binders that are used in sand casting emit high amounts of hazardous pollutants and volatile organic compounds
during the casting process. Inorganic binders do not emit harmful gases and are widely used in aluminum casting processes.
However, there is a paucity of studies on the reuse of waste sand using inorganic binders in casting processes. In the study,
waste sands using an inorganic binder and a powder were recycled via wet regeneration and the effects of residual powder
on regenerated sand were analyzed. The wet regeneration of molding and casting sands was performed by cleaning, followed
by grinding in a 0.2-M KOH solution and then removing the residual binder using water. The molding sand was regenerated
to the same level as the raw sand via the 0.2-M KOH solution followed by water cleaning twice. The casting sand removed
most of the binder via additional water cleaning for the regeneration condition of the molding sand. Although the powder was
completely removed from the regenerated molding sand, the regenerated casting sand remained used powder; the residual
powder had a 78% performance. Thus, the regenerated casting sand was reusable only when adding binder without powder.
Author(s)
김경호박흥석배민아이만식배재호
Issued Date
2021
Type
Article
Keyword
Waste sand · Inorganic binder · Powder · Regeneration · Regenerated sand
DOI
10.1007/s10163-020-01103-5
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9259
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_gale_infotracacademiconefile_A648315701&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Regeneration%20of%20used%20sand%20with%20sodium%20silicate%20binder%20by%20wet%20method%20and%20their%20core%20manufacturing&offset=0&pcAvailability=true
Publisher
Journal of Material Cycles and Waste Management
Location
미국
Language
영어
ISSN
1438-4957
Citation Volume
23
Citation Number
1
Citation Start Page
121
Citation End Page
129
Appears in Collections:
Engineering > Civil and Environmental Engineering
Authorize & License
  • Authorize공개
Files in This Item:
  • There are no files associated with this item.

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.