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Ukususwa kwe-sulfurization kanye nokususwa kwe-nitration
Ubuchwepheshe
Uchungechunge lwekhabhoni esebenzayo lwenziwa ngamalahle akhethiwe kahle kanye namalahle ahlanganisiwe. Ukuxuba impuphu yamalahle netiyela namanzi, ukukhipha izinto ezihlanganisiwe ku-Columnar ngaphansi kwengcindezi kawoyela, kulandelwe yi-carbonization, ukusebenza kanye ne-oxidation.
Sithatha ubuqotho kanye nokuzuza kubo bonke njengomgomo wokusebenza, futhi siphatha wonke amabhizinisi ngokulawula okuqinile nokunakekela.