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1Cr18Ni9Ti 钢渣中除有一般渣样的成分外,还有大量的铬和钛,有时还有氟,并且随着冶炼期和冶炼工艺的不同而变化很大。特别是前期渣样,有的Cr_2O_3达40%,M O_2,TiO_2达10%。这些试样不仅难于分解,而且用一般分离手段还很难将干扰元素一次除去。采用 Na_2O_2+Na_2CO_3熔融,三乙醇胺强碱溶液浸取,在水杨酸存在下,加碳酸铵煮沸,再加钛铁试剂,使钙镁形成碳酸钙和氢氧化镁沉淀,与硅、铁、铝、铬、锰、钛、氟、硫、磷等元素分离,沉淀溶解后就可用 EDTA 滴定钙镁。手续简单,铁矿及一般渣样同样适用。
In addition to the usual slag-like composition of the 1Cr18Ni9Ti steel slag, there is also a significant amount of chromium and titanium, sometimes fluorine, and varies greatly with the smelting and smelting processes. In particular, the early slag samples, some Cr_2O_3 up to 40%, M O_2, TiO_2 up to 10%. These samples are not only difficult to disassemble, but also difficult to remove interfering elements in a single step by common means of separation. Na 2 O 2 + Na 2 CO 3 melt, leaching with triethanolamine strong base solution, adding ammonium borate in the presence of salicylic acid, adding titaniferous reagent to precipitate calcium and magnesium into calcium carbonate and magnesium hydroxide, mixing with silicon, iron, aluminum , Chromium, manganese, titanium, fluorine, sulfur, phosphorus and other elements of separation, the precipitate can be dissolved EDTA titration of calcium and magnesium. The procedure is simple, iron ore and general slag samples also apply.