Imvelaphi ye-bentonite "inhlabathi yendawo yonke"
I-Bentonite iyibumba elikhethekile lamaminerali eline-viscosity, ukunwetshwa, i-lubricity, ukumuncwa kwamanzi kanye ne-thixotropy nezinye izici, ukusetshenziswa kuye kwahlanganisa izinto zokuphonsa, ama-pellets e-metallurgical, ama-chemical coatings, imboni yokumba udaka kanye nokukhanya kanye nezolimo emikhakheni ehlukahlukene, kamuva ngenxa yobubanzi bayo. ukusetshenziswa, okwaziwa ngokuthi "inhlabathi yendawo yonke", leli phepha lixoxa ngokuyinhloko ngokusetshenziswa kanye nendima ye-bentonite ekubunjweni.
Ukwakheka kwesakhiwo se-bentonite
I-Bentoniteyakhiwa i-montmorillonite ngokwesakhiwo sayo se-crystal, ngoba i-crystal yayo eyingqayizivele inokunamathela okuqinile ngemva kokumuncwa kwamanzi, ngakho-ke isetshenziswa kabanzi ekubunjweni kwesihlabathi, isihlabathi sihlanganiswe ndawonye ukuze senze amandla amanzi kanye ne-plasticity, namandla omile ngemva kokumiswa.Ngemuva kokuthi i-bentonite isomile, ukuhlangana kwayo kungabuyiselwa ngemva kokwengeza amanzi.
Ukusetshenziswa kwe-bentonite ekubunjweni
Ikhwalithi ye-bentonite ibaluleke kakhulu ekukhiqizweni kwe-castings ekubunjweni, futhi ikhwalithi ye-bentonite inethonya eliseduze ebusweni kanye nekhwalithi yangaphakathi ye-castings.Ukusetshenziswa kwekhwalithi ephezulu ye-bentonite emisebenzini yokuphonsa kuzokwandisa kakhulu amandla, ukuqina kanye nokuphefumula komoya kokusakazwa, ukunciphisa okuqukethwe kwamanzi esihlabathini sokubumba, kuthuthukise ngokuphumelelayo ukuphela kwendawo kanye nokunemba kokusakazwa, futhi kuxazulule izinkinga zekhwalithi evamile ebusweni be-casting. ukubunjwa, okufana nalokhu: ukugeza isihlabathi, ukufakwa kwesihlabathi, imbobo yesihlabathi, isihlabathi esinamathelayo, izimbotshana, izimbobo ezigoqayo kanye nochungechunge lwezinkinga.Ekuthuthukisweni kwezimboni ezisheshayo zanamuhla, i-bentonite njengokulungiselela ubumba ukubumba isihlabathi sokubumba kuseyinto ekhethwayo yokubumba embonini yokuphonsa.
I-Bentonite inezidingo zokusebenza kwezimboni zokusakaza
I-viscosity adhesion ye-bentonite iyisihluthulelo sokulinganisa ikhwalithi ye-bentonite yokuphonsa, okudinga ukuhlanzeka okuphezulu kwe-montmorillonite, usayizi wezinhlayiya ezinhle (95% ngokusebenzisa i-200 mesh sieve), kanye nenqubo yokucubungula i-sodium elungile, ukuze inani elincane lesihlabathi sokubumba. ingathola amandla okucindezela okumanzi aphezulu.
Indima ye-bentonite ekulingiseni
(1) Isetshenziswa njenge-casting molding sand binder
I-Bentonite ine-viscosity enkulu kakhulu, i-plasticity ephezulu, amandla amahle, intengo ephansi, futhi ingenza isihlabathi sokubumba esibunjiweyo sifomeke ngokushesha.
(2) Khulisa ipulasitiki yokubunjwa
Isetshenziswa njenge-casting sand binder material, i-bentonite ingathuthukisa i-plasticity ye-castings, futhi ingavimbela ngokuphumelelayo amaphutha okukhiqiza ama-castings, afana nalokhu: angavimbela ukufakwa kwesihlabathi, ukukhwabanisa, ukuchithwa kwesigaxa, ukuwa kwesihlabathi.
(3) Ukusebenziseka kabusha okuhle kanye nezindleko eziphansi
Ekukhethweni kwamamodeli, sincoma ukusetshenziswa kwe-bentonite eyenziwe nge-sodium-based, ngoba izinkomba ze-sodium-based bentonite zinamandla kakhulu kune-calcium-based bentonite, njengokuthi: ukumelana nokushisa nokuzinza kungenxa ye-bentonite esekelwe ku-calcium.Ngakho-ke, ngisho nangemva kokuba isikhwama se-sodium bentonite sipholiswe ngokuphelele futhi somiswe ekushiseni okuphezulu kakhulu, sisenamandla okunamathela aqinile lapho amanzi engezwa okwesibili, futhi sisengaqhubeka sisetshenziswa njenge-casting molding sand binder. ngenxa yokusebenziseka kabusha okuqinile kanye nezindleko eziphansi, ngakho-ke i-bentonite ye-sodium ikhethwa kuqala njengento ekhethwayo ohlelweni lokuphonsa.
(4) Umthamo mncane, futhi amandla okubunjwa aphezulu
I-Bentonite ine-adhesion eqinile kanye nesilinganiso esincane, ukwengeza i-5% yekhwalithi ephezulu ye-sodium-based bentonite esihlabathini sokuphonsa kunganciphisa kakhulu okuqukethwe kodaka lwesihlabathi esiphonsa, ikakhulukazi amathuba okuba izinto zokumuncwa kwamanzi, umlotha kanye ne-porosity esihlabathini sokubumba kuyoba. kuncishiswe ngokufanele, futhi amandla okulingisa azothuthukiswa kakhulu.
(5) Ukuthuthukisa umkhiqizo kanye nezinzuzo zezomnotho zamabhizinisi asunguliwe
Uma usebenzisa i-bentonite yekhwalithi ephezulu ukukhiqiza ama-castings, okuqukethwe kwe-bentonite okusebenzayo kwe-5% ~ 6% esihlabathini esidala kwanele, futhi i-1% ~ 2% ingangezwa isikhathi ngasinye lapho kuhlanganiswa.Ithani ngalinye le-bentonite yekhwalithi ephezulu lingakhiqiza ukusakaza okungu-10~15 t emugqeni wokukhiqiza owenziwe ngomshini.
Yebo, ukusetshenziswa kanye nendima ye-bentonite ekubunjweni konke kwethulwe lapha, ngithemba ukuthi ungabhekisela kukho uma uqonda i-bentonite, ubumba lwamaminerali angenalutho olunezinjongo eziningi, ekufundeni okujulile.
Isikhathi sokuthumela: Feb-22-2023