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一、矿物原料特点锡是一种银白色金属,具强光泽,相对密度为7.0,熔点低(230℃),硬度为3.75,质软延展性好。锡在地壳中含量仅2×10~(-6)～3×10~(-6)。锡属于亲铜元素组,但在岩石圈上部又具有亲氧和亲硫的两性特征。锡与硫起作用时形成两种化合物:一硫化锡和二硫化锡,它们在高温下具有较强的挥发性。锡与氧也能化合,产生一氧化锡和二氧化锡。虽
First, the characteristics of mineral raw materials Tin is a silver-white metal, with a strong gloss, the relative density of 7.0, low melting point (230 ℃), hardness 3.75, good soft ductility. Tin is only 2 × 10 -6 ~ 3 × 10 -6 in the crust. Tin belongs to the group of pro-copper elements, but possesses the amphipathic features of oxygen and sulfur affinity in the upper part of the lithosphere. Tin and sulfur work together to form two compounds: tin monosulfide and tin disulfide, which have high volatility at high temperatures. Tin and oxygen can also be combined to produce tin oxide and tin oxide. although