Khibrada Codsiga Boehmite

Boehmite ( {{0}AlO(OH)), macdanta aluminium hydroxide ee muhiimka ah, ayaa si weyn loogu isticmaalaa warshadaha casriga ah sababtoo ah sifooyinka gaarka ah ee jirka iyo kiimikada. Isticmaalka wax ku oolka ah iyo cilmi baarista, waxaan helnay khibrad ku saabsan diyaarinta boehmite, xakamaynta hantida, iyo codsiga, kaas oo lagu soo koobay hoos.

Marka hore, boehmite waxaa lagu diyaarin karaa iyadoo la adeegsanayo habab kala duwan, oo ay ku jiraan hydrothermal, sol{0}}jel, iyo aluminium milix biyo-celin ah. Habka kuleyliyaha ayaa si gaar ah loo jecel yahay sababtoo ah xaaladaha falcelinta khafiifka ah iyo qaab-dhismeedka crystal la xakameyn karo. Ficil ahaan, waxaa la ogaaday in heerkulka falcelinta, pH, iyo waqtiga falcelinta ay si weyn u saameeyaan qaabka crystal iyo cabbirka walxaha boehmite. Tusaale ahaan, daawaynta hydrothermal ee 120-180 digrii caadi ahaan waxay keentaa sare{6} daahirnimo, si fiican{7}}crystalline boehmite. Intaa waxaa dheer, xakameynta pH ee inta u dhexeysa 4-7 waxay gacan ka geysaneysaa xakameynta sameynta wasakh (sida -Al₂O₃), si loo hubiyo nadiifnimada alaabta.

Marka labaad, boehmite, iyada oo ay ugu wacan tahay bedkeeda sare, xasilloonida kulaylka aadka u wanaagsan, iyo firfircoonaanta kiimikaad, waxaa badanaa loo isticmaalaa taageero kiciye, walxaha dahaarka ah ee lithium{0}}kala-soocida baytariyada, iyo horudhaca dhoobada. Goobta baytariyada lithium, dahaarka boehmite waxay si wax ku ool ah u wanaajin kartaa caabbinta kulaylka ee kala soocida waxayna kor u qaadi kartaa badbaadada batteriga. Codsiyada la taaban karo, kala firdhinta isku midka ah ee walxaha boehmite ayaa muhiim u ah waxqabadka kama dambaysta ah. Sidaa darteed, hagaajinta nidaamka slurry leh surfactants ku habboon ama kala firdhiyey waxay si weyn u wanaajin kartaa sifooyinkeeda.

Ugu dambeyntii, boehmite waxaa loo rogi karaa {{0}Al₂O₃ (corundum) heerkulka sare, taas oo ka dhigaysa mid dhexdhexaad ah oo qiimo leh diyaarinta alumina sare{1}. Inta lagu jiro habka calcination, xakamaynta heerka kulaylka iyo heerkulka ugu dambeeya (sida caadiga ah 400-600 darajo si loo ilaaliyo qaab dhismeedka boehmite, halka heerkulka sare uu kor u qaadayo isbeddelka wajiga) ayaa muhiim ah.

Marka la soo koobo, boehmite waxay ku jirtaa boos caan ah oo ku saabsan sayniska agabka iyadoo ay ugu wacan tahay sifooyinka wanaagsan iyo codsiyada kala duwan. Iyadoo la wanaajinayo habka diyaarinta iyo habaynta hantideeda, awooddeeda codsi waa la sii ballaarin karaa, iyada oo siinaya xalal waxtar leh oo loogu talagalay warshadaha la xidhiidha.