Gulu la bauxite

Bauxite, yomwe imadziwikanso kuti bauxite kapena bauxite, imapangidwa makamaka ndi aluminium oxide ndipo imakhala ndi zonyansa. Bauxite ili ndi mawonekedwe ovuta kwambiri ndipo ndi liwu lodziwika bwino la mitundu yosiyanasiyana ya aluminiyamu ya hydrous yokhala ndi magwero osiyanasiyana a geological.

Malinga ndi ntchito bauxite, izo anawagawa zitsulo kalasi, mankhwala kalasi, refractory kalasi, akupera kalasi, simenti kalasi, etc. Ntchito kupanga zipangizo refractory, mtundu uwu wa bauxite amatchedwa refractory kalasi alumina. Bauxite clinker yokhala ndi ma ratios oyenerera a AL2O3/Fe2O3 ndi AL2O3/SiO2 imagwiritsidwa ntchito kusungunula alumina.

1. Kutentha kwakukulu kwa refractory, kukhazikika kwamphamvu kwa kutentha, komanso kusang'amba. Aluminium mullite mchenga ndi aluminium-silicon-based product. Pambuyo calcination, refractoriness ake ndi matenthedwe kugwedera bata ndi zazikulu kwambiri kuposa mchenga quartz ndi kristalo gawo kapangidwe wopangidwa ndi single crystal silikoni. Simanyowetsedwa mosavuta ndi zitsulo zamadzimadzi kuti apange kusungunuka kochepa, komwe kungagonjetse mchenga wa quartz wokhala ndi coefficient yayikulu yowonjezera kutentha ndi zokolola zochepa panthawi ya condensation, zomwe zimapangitsa kuti pakhale zoperewera monga kutsika kwapansi kulondola ndi kumamatira mchenga.

2. Zosiyanasiyana tinthu gradation, bwino kupuma. Mchenga wa Foundry umadulidwa ndi mphero ya Raymond ndikusakaniza molingana ndi momwe tinthu tating'onoting'ono tating'onoting'ono timene timatulutsa kuti utoto ukhale wabwino. Kuphatikiza apo, zinthu zopangidwa ndi mphero za mpira, tinthu tating'onoting'ono tomwe timapangidwa ndi mphero za Raymond timayendetsedwa bwino, ndipo gawo la bauxite clinker ndi lasayansi kwambiri.

3. Zovalazo zimakhala ndi kuphatikizika kwakukulu, kulimba kwambiri komanso kugwetsa kosavuta. Zopaka zosiyanira zosiyanasiyana zimagwiritsa ntchito zinthu za aluminiyamu-silicon clinker, zotayidwa thovu bauxite clinker ufa wabwino, malinga ndi magawo osiyanasiyana a tinthu kuchokera mkati. Kuphatikizana kuchokera ku zabwino kupita ku coarse kumapangitsa kuti pakhale mgwirizano wapamwamba pakati pa zokutira; pamene kuwonjezera ❖ kuyanika mphamvu ndi kukokoloka kukana kuteteza mavuto monga kugwa, ndi zosavuta demould. Ndipo bauxite mullite ndi chinthu chosalowerera ndale, ndipo bauxite clinker ingagwiritsidwe ntchito ngati zomangira asidi ndi alkali.