Process for purifying sodium sulfate and sodium carbonate from alkali furnace alkali ash
The invention discloses a process for purifying sodium sulfate and sodium carbonate from alkali furnace alkali ash. The process comprises the following steps: taking alkali furnace alkali ash as a rawmaterial, adding fresh water or a first nitro-alkali washing solution and a circulating salt dissolv...
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| creator | PENG SAIJUN JIN FUMING |
| description | The invention discloses a process for purifying sodium sulfate and sodium carbonate from alkali furnace alkali ash. The process comprises the following steps: taking alkali furnace alkali ash as a rawmaterial, adding fresh water or a first nitro-alkali washing solution and a circulating salt dissolving mother solution into the alkali ash to dissolve sodium chloride and potassium sulfate in the alkali ash, thickening through a hydrocyclone, carrying out solid-liquid separation to obtain undissolved nitro-alkali containing sodium sulfate and sodium carbonate and a salt dissolving mother solution, and dividing the salt dissolving mother solution into a circulating salt dissolving mother solution and a discharged salt mother solution; adding fresh water and a second nitro-alkali washing solution into the undissolved nitro-alkali, and circularly stirring and washing; carrying out solid-liquid separation to obtain washed nitro-alkali and a nitro-alkali washing solution, wherein the nitro-alkali washing solution is |
| format | Patent |
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The process comprises the following steps: taking alkali furnace alkali ash as a rawmaterial, adding fresh water or a first nitro-alkali washing solution and a circulating salt dissolving mother solution into the alkali ash to dissolve sodium chloride and potassium sulfate in the alkali ash, thickening through a hydrocyclone, carrying out solid-liquid separation to obtain undissolved nitro-alkali containing sodium sulfate and sodium carbonate and a salt dissolving mother solution, and dividing the salt dissolving mother solution into a circulating salt dissolving mother solution and a discharged salt mother solution; adding fresh water and a second nitro-alkali washing solution into the undissolved nitro-alkali, and circularly stirring and washing; carrying out solid-liquid separation to obtain washed nitro-alkali and a nitro-alkali washing solution, wherein the nitro-alkali washing solution is</description><language>chi ; eng</language><subject>CHEMISTRY ; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM ; COMPOUNDS THEREOF ; FERTILISERS ; FERTILISERS CHARACTERISED BY THEIR FORM ; INORGANIC CHEMISTRY ; MANUFACTURE THEREOF ; METALLURGY ; MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05 ; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS ; NON-METALLIC ELEMENTS</subject><creationdate>2020</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=20200717&DB=EPODOC&CC=CN&NR=111422887A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20200717&DB=EPODOC&CC=CN&NR=111422887A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>PENG SAIJUN</creatorcontrib><creatorcontrib>JIN FUMING</creatorcontrib><title>Process for purifying sodium sulfate and sodium carbonate from alkali furnace alkali ash</title><description>The invention discloses a process for purifying sodium sulfate and sodium carbonate from alkali furnace alkali ash. The process comprises the following steps: taking alkali furnace alkali ash as a rawmaterial, adding fresh water or a first nitro-alkali washing solution and a circulating salt dissolving mother solution into the alkali ash to dissolve sodium chloride and potassium sulfate in the alkali ash, thickening through a hydrocyclone, carrying out solid-liquid separation to obtain undissolved nitro-alkali containing sodium sulfate and sodium carbonate and a salt dissolving mother solution, and dividing the salt dissolving mother solution into a circulating salt dissolving mother solution and a discharged salt mother solution; adding fresh water and a second nitro-alkali washing solution into the undissolved nitro-alkali, and circularly stirring and washing; carrying out solid-liquid separation to obtain washed nitro-alkali and a nitro-alkali washing solution, wherein the nitro-alkali washing solution is</description><subject>CHEMISTRY</subject><subject>COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM</subject><subject>COMPOUNDS THEREOF</subject><subject>FERTILISERS</subject><subject>FERTILISERS CHARACTERISED BY THEIR FORM</subject><subject>INORGANIC CHEMISTRY</subject><subject>MANUFACTURE THEREOF</subject><subject>METALLURGY</subject><subject>MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05</subject><subject>MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS</subject><subject>NON-METALLIC ELEMENTS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2020</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZIgIKMpPTi0uVkjLL1IoKC3KTKvMzEtXKM5PySzNVSguzUlLLElVSMxLgQklJxYl5eeBBNOK8nMVEnOyE3MyFdJKi_ISk1Nh3MTiDB4G1rTEnOJUXijNzaDo5hri7KGbWpAfn1pcAFSdl1oS7-xnaGhoYmRkYWHuaEyMGgDAxTpu</recordid><startdate>20200717</startdate><enddate>20200717</enddate><creator>PENG SAIJUN</creator><creator>JIN FUMING</creator><scope>EVB</scope></search><sort><creationdate>20200717</creationdate><title>Process for purifying sodium sulfate and sodium carbonate from alkali furnace alkali ash</title><author>PENG SAIJUN ; JIN FUMING</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN111422887A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2020</creationdate><topic>CHEMISTRY</topic><topic>COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM</topic><topic>COMPOUNDS THEREOF</topic><topic>FERTILISERS</topic><topic>FERTILISERS CHARACTERISED BY THEIR FORM</topic><topic>INORGANIC CHEMISTRY</topic><topic>MANUFACTURE THEREOF</topic><topic>METALLURGY</topic><topic>MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05</topic><topic>MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS</topic><topic>NON-METALLIC ELEMENTS</topic><toplevel>online_resources</toplevel><creatorcontrib>PENG SAIJUN</creatorcontrib><creatorcontrib>JIN FUMING</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>PENG SAIJUN</au><au>JIN FUMING</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Process for purifying sodium sulfate and sodium carbonate from alkali furnace alkali ash</title><date>2020-07-17</date><risdate>2020</risdate><abstract>The invention discloses a process for purifying sodium sulfate and sodium carbonate from alkali furnace alkali ash. The process comprises the following steps: taking alkali furnace alkali ash as a rawmaterial, adding fresh water or a first nitro-alkali washing solution and a circulating salt dissolving mother solution into the alkali ash to dissolve sodium chloride and potassium sulfate in the alkali ash, thickening through a hydrocyclone, carrying out solid-liquid separation to obtain undissolved nitro-alkali containing sodium sulfate and sodium carbonate and a salt dissolving mother solution, and dividing the salt dissolving mother solution into a circulating salt dissolving mother solution and a discharged salt mother solution; adding fresh water and a second nitro-alkali washing solution into the undissolved nitro-alkali, and circularly stirring and washing; carrying out solid-liquid separation to obtain washed nitro-alkali and a nitro-alkali washing solution, wherein the nitro-alkali washing solution is</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM COMPOUNDS THEREOF FERTILISERS FERTILISERS CHARACTERISED BY THEIR FORM INORGANIC CHEMISTRY MANUFACTURE THEREOF METALLURGY MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05 MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS NON-METALLIC ELEMENTS |
| title | Process for purifying sodium sulfate and sodium carbonate from alkali furnace alkali ash |
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