论文部分内容阅读
近年来,从石煤中提取 V_2O_5(以下简称石煤提钒)的事业蓬勃发展,经济效益很好。当前,国内外市场,V_2O_5仍然供不应求,开展石煤提钒是个很好时机,抓住时机就大有可为。一、金属钒(V)的优异性能钒属稀有金属,在自然界中分布广,但极分散,与钒共生的矿物种类繁多,但有工业开采价值的却很少。钒主要赋存于钒钛磁铁矿、钒铀矿、石煤和钒酸盐矿之中。金属钒呈银白色,熔点高,可塑性好,具有优良的延伸性、传热性、焊接性、冲击韧性和抗腐蚀性,在常温下化学性质稳定。其同位素衰变期短、具有良好的核物理性能。含钒合金广泛用于机械工业、航空航天工业、核工业和化学工业中。合金钢中加入钒
In recent years, the extraction of V_2O_5 from stone coal (hereinafter referred to as stone coal vanadium) is booming, with good economic benefits. Currently, domestic and foreign markets, V2O5 still in short supply, to carry out vanadium extraction is a good time to seize the opportunity for promising. First, the excellent performance of the metal vanadium (V) Vanadium is a rare metal, widely distributed in nature, but very scattered, a wide range of mineral symbiosis with vanadium, but there is little value of industrial exploitation. Vanadium mainly occurs in vanadium titanium magnetite, vanadium uranium ore, stone coal and vanadate. Metal vanadium silver white, high melting point, good plasticity, excellent elongation, heat transfer, weldability, impact toughness and corrosion resistance, chemical stability at room temperature. Its isotope decays short, with good nuclear physics properties. Vanadium-containing alloys are widely used in the machinery industry, aerospace industry, nuclear industry and chemical industry. Vanadium alloy steel