Technology of SiO2 smelt blast furnace uses a case

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Use Yi Rong of Si of SiO2, simple substance, Al2O3 acid of Yu Qing fluorine, nitric acid, and SiC not the character of acid of fluorine of dissolve Yu Qing, nitric acid, with appearance of dissolve of hydrofluoric acid, nitric acid, filter not filter paper of frit content along with is in porcelain crucible incinerate, calcination, determine with weight law the SiC quantity in iron channel makings. Evaporate at perchloric acid is being added in filtrate the effect that ion of fluorine of fumy eliminate remains analyses to Al2O3, with alkali titration of displacement of salt of precipitation depart, fluorine, EDTA analyses Al2O3 quantity. Determine the result is accurate and reliable, RSD: SiC ＜ 0.

134% , al2O3 ＜ 1.

438% . Blast furnace taphole advocate channel makings reachs the makings that raise channel is the mixture that reachs a few aluminium to simple fireproof stuff is made up and be become by carborundum, its are main chemical composition reachs a few C, SiO2, Si, Fe2O3, TiO2, CaO, MgO to wait for SiC, Al2O3. Carbon of the SiC in using sample, dissociate is not deliquescent the character at hydrofluoric acid, nitric acid, consult relevant document, sample dissolves with hydrofluoric acid, nitric acid after processing, siO2, Si and hydrofluoric acid form SiF4 to volatilize detached, filter with filter paper not carbon of frit content SiC, dissociate, after calcination, determine with weight law SiC quantity. Depart at filtering next perchloric acid is added to evaporate in the filtrate after fumy, remove the effect that leftover fluorine ion analyses to Al2O3, with alkali titration of displacement of salt of precipitation depart, fluorine, EDTA determines Al2O3 quantity. Lend this implementation blast furnace taphole advocate channel makings and the systems analysis of the SiC in the makings that raise channel, Al2O3, experimental result all satisfactory. CNC Milling CNC Machining