Micron-sized ultrafine iron powder preparation method

Micron-sized ultrafine iron powder preparation method

The invention relates to a micron-sized ultrafine iron powder preparation method and belongs to the technical field of preparation processes of metallic micron-sized ultrafine powder. The preparation method mainly includes: (1) taking scale oxide separated from the surface layer of incineration wast...

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Hauptverfasser: WANG XINGQING, TAN DINGSHENG, TAN BIN, MAO XIEMIN, JI SHANPENG
Format: Patent
Sprache:eng
Schlagworte:
CASTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
WORKING METALLIC POWDER
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creator WANG XINGQING
TAN DINGSHENG
TAN BIN
MAO XIEMIN
JI SHANPENG
description The invention relates to a micron-sized ultrafine iron powder preparation method and belongs to the technical field of preparation processes of metallic micron-sized ultrafine powder. The preparation method mainly includes: (1) taking scale oxide separated from the surface layer of incineration waste iron as a raw material, adding a certain amount of graphite reducing agent and appropriate zinc stearate as process control agents, and fully grinding and crushing the materials in a planetary ball mill, with the ball-milling process parameters being 3-5:1 in ball material ratio, 300-500r/min in ball-milling speed, 8-24h in ball-grinding time, so as to obtain iron oxide powder with the particle size being 32-1.2 microns; (2) after sieving of the iron oxide powder, heating the iron oxide powder in a tubular heating furnace, and feeding mixed gas of hydrogen and nitrogen in the volume ratio of 1:4 with the gas flow of 200-300ml/min prior to reduction at the temperature of 300-500 DEG C for 10-30 minutes so as to obtain iron powder with the particle size being 1 micron finally.
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The preparation method mainly includes: (1) taking scale oxide separated from the surface layer of incineration waste iron as a raw material, adding a certain amount of graphite reducing agent and appropriate zinc stearate as process control agents, and fully grinding and crushing the materials in a planetary ball mill, with the ball-milling process parameters being 3-5:1 in ball material ratio, 300-500r/min in ball-milling speed, 8-24h in ball-grinding time, so as to obtain iron oxide powder with the particle size being 32-1.2 microns; (2) after sieving of the iron oxide powder, heating the iron oxide powder in a tubular heating furnace, and feeding mixed gas of hydrogen and nitrogen in the volume ratio of 1:4 with the gas flow of 200-300ml/min prior to reduction at the temperature of 300-500 DEG C for 10-30 minutes so as to obtain iron powder with the particle size being 1 micron finally.</description><language>eng</language><subject>CASTING ; MAKING METALLIC POWDER ; MANUFACTURE OF ARTICLES FROM METALLIC POWDER ; PERFORMING OPERATIONS ; POWDER METALLURGY ; TRANSPORTING ; WORKING METALLIC POWDER</subject><creationdate>2015</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20150408&amp;DB=EPODOC&amp;CC=CN&amp;NR=104493192A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20150408&amp;DB=EPODOC&amp;CC=CN&amp;NR=104493192A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>WANG XINGQING</creatorcontrib><creatorcontrib>TAN DINGSHENG</creatorcontrib><creatorcontrib>TAN BIN</creatorcontrib><creatorcontrib>MAO XIEMIN</creatorcontrib><creatorcontrib>JI SHANPENG</creatorcontrib><title>Micron-sized ultrafine iron powder preparation method</title><description>The invention relates to a micron-sized ultrafine iron powder preparation method and belongs to the technical field of preparation processes of metallic micron-sized ultrafine powder. 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subjects CASTING
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
WORKING METALLIC POWDER
title Micron-sized ultrafine iron powder preparation method
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