Method for recycling coal ash
The invention discloses a method for recycling coal ash. The method comprises the following steps of: regulating alkalinity of molten converter slag, modifying the molten converter slag, performing rotary pelletization on modified molten converter slag to obtain slag particles and iron shot particle...
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| creator | ZHANG SHENGQIN DENG NENGYUN QIN YUELIN LIU HAO ZHANG QIANYING YANG YANHUA |
| description | The invention discloses a method for recycling coal ash. The method comprises the following steps of: regulating alkalinity of molten converter slag, modifying the molten converter slag, performing rotary pelletization on modified molten converter slag to obtain slag particles and iron shot particles; and performing magnetic separating on the slag particles and the iron shot particles, and enabling the separated slag particles to be in an amorphous state, wherein the amorphous-state slag can be used as cement clinker to produce cement. According to the method disclosed by the invention, a certain amount of a reducing agent and a modifying agent are added into the molten slag discharged from a converter, so that iron in the molten slag is reduced and recycled, and steel slag is modified to be similar with a blast furnace slag component for producing cement; a heat source of steel slag is mainly used for reducing iron oxides in slag and re-constructing a mineral phase of steel slag; and after the modified slag |
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The method comprises the following steps of: regulating alkalinity of molten converter slag, modifying the molten converter slag, performing rotary pelletization on modified molten converter slag to obtain slag particles and iron shot particles; and performing magnetic separating on the slag particles and the iron shot particles, and enabling the separated slag particles to be in an amorphous state, wherein the amorphous-state slag can be used as cement clinker to produce cement. According to the method disclosed by the invention, a certain amount of a reducing agent and a modifying agent are added into the molten slag discharged from a converter, so that iron in the molten slag is reduced and recycled, and steel slag is modified to be similar with a blast furnace slag component for producing cement; a heat source of steel slag is mainly used for reducing iron oxides in slag and re-constructing a mineral phase of steel slag; and after the modified slag</description><language>chi ; eng</language><subject>ARTIFICIAL STONE ; CEMENTS ; CERAMICS ; CHEMISTRY ; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT ; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS ; CONCRETE ; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC ; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS ; LIME, MAGNESIA ; MANUFACTURE OF IRON OR STEEL ; METALLURGY ; METALLURGY OF IRON ; REFRACTORIES ; SLAG ; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE ; TREATMENT OF NATURAL STONE</subject><creationdate>2017</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&date=20170510&DB=EPODOC&CC=CN&NR=106636498A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76516</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170510&DB=EPODOC&CC=CN&NR=106636498A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ZHANG SHENGQIN</creatorcontrib><creatorcontrib>DENG NENGYUN</creatorcontrib><creatorcontrib>QIN YUELIN</creatorcontrib><creatorcontrib>LIU HAO</creatorcontrib><creatorcontrib>ZHANG QIANYING</creatorcontrib><creatorcontrib>YANG YANHUA</creatorcontrib><title>Method for recycling coal ash</title><description>The invention discloses a method for recycling coal ash. 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According to the method disclosed by the invention, a certain amount of a reducing agent and a modifying agent are added into the molten slag discharged from a converter, so that iron in the molten slag is reduced and recycled, and steel slag is modified to be similar with a blast furnace slag component for producing cement; a heat source of steel slag is mainly used for reducing iron oxides in slag and re-constructing a mineral phase of steel slag; and after the modified slag</description><subject>ARTIFICIAL STONE</subject><subject>CEMENTS</subject><subject>CERAMICS</subject><subject>CHEMISTRY</subject><subject>CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS</subject><subject>CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT</subject><subject>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</subject><subject>CONCRETE</subject><subject>GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC</subject><subject>GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS</subject><subject>LIME, MAGNESIA</subject><subject>MANUFACTURE OF IRON OR STEEL</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>REFRACTORIES</subject><subject>SLAG</subject><subject>TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS</subject><subject>TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE</subject><subject>TREATMENT OF NATURAL STONE</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2017</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJD1TS3JyE9RSMsvUihKTa5MzsnMS1dIzk_MUUgszuBhYE1LzClO5YXS3AyKbq4hzh66qQX58anFBYnJqXmpJfHOfoYGZmbGZiaWFo7GxKgBAKw5I90</recordid><startdate>20170510</startdate><enddate>20170510</enddate><creator>ZHANG SHENGQIN</creator><creator>DENG NENGYUN</creator><creator>QIN YUELIN</creator><creator>LIU HAO</creator><creator>ZHANG QIANYING</creator><creator>YANG YANHUA</creator><scope>EVB</scope></search><sort><creationdate>20170510</creationdate><title>Method for recycling coal ash</title><author>ZHANG SHENGQIN ; DENG NENGYUN ; QIN YUELIN ; LIU HAO ; ZHANG QIANYING ; YANG YANHUA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN106636498A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2017</creationdate><topic>ARTIFICIAL STONE</topic><topic>CEMENTS</topic><topic>CERAMICS</topic><topic>CHEMISTRY</topic><topic>CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS</topic><topic>CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT</topic><topic>COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS</topic><topic>CONCRETE</topic><topic>GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC</topic><topic>GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS</topic><topic>LIME, MAGNESIA</topic><topic>MANUFACTURE OF IRON OR STEEL</topic><topic>METALLURGY</topic><topic>METALLURGY OF IRON</topic><topic>REFRACTORIES</topic><topic>SLAG</topic><topic>TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS</topic><topic>TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE</topic><topic>TREATMENT OF NATURAL STONE</topic><toplevel>online_resources</toplevel><creatorcontrib>ZHANG SHENGQIN</creatorcontrib><creatorcontrib>DENG NENGYUN</creatorcontrib><creatorcontrib>QIN YUELIN</creatorcontrib><creatorcontrib>LIU HAO</creatorcontrib><creatorcontrib>ZHANG QIANYING</creatorcontrib><creatorcontrib>YANG YANHUA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ZHANG SHENGQIN</au><au>DENG NENGYUN</au><au>QIN YUELIN</au><au>LIU HAO</au><au>ZHANG QIANYING</au><au>YANG YANHUA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for recycling coal ash</title><date>2017-05-10</date><risdate>2017</risdate><abstract>The invention discloses a method for recycling coal ash. The method comprises the following steps of: regulating alkalinity of molten converter slag, modifying the molten converter slag, performing rotary pelletization on modified molten converter slag to obtain slag particles and iron shot particles; and performing magnetic separating on the slag particles and the iron shot particles, and enabling the separated slag particles to be in an amorphous state, wherein the amorphous-state slag can be used as cement clinker to produce cement. According to the method disclosed by the invention, a certain amount of a reducing agent and a modifying agent are added into the molten slag discharged from a converter, so that iron in the molten slag is reduced and recycled, and steel slag is modified to be similar with a blast furnace slag component for producing cement; a heat source of steel slag is mainly used for reducing iron oxides in slag and re-constructing a mineral phase of steel slag; and after the modified slag</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS LIME, MAGNESIA MANUFACTURE OF IRON OR STEEL METALLURGY METALLURGY OF IRON REFRACTORIES SLAG TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF NATURAL STONE |
| title | Method for recycling coal ash |
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