以提钒尾渣为主要原料制造的黑瓷远红外辐射板, 具有宽泛的烧结温度、突出的着色作用和优良的成瓷性能, 第四周期过渡金属氧化物的含量大于80％, 辐射率高达0.95, 经过2 000 h 、650 ℃加速老化试验, 辐射率无变化, 黑瓷板表面层不会脱落。通过扫描电镜对素坯板和黑瓷板的断口形貌和显微组织进行观察发现, 素坯板主要由钛铁矿、板钛铁矿和拉长石等矿物组成, 颗粒间呈机械混合状态, 黑瓷板由晶粒、玻璃体和气孔组成, 原料中大部分金属氧化物转移到晶粒中富集, 形成堇青石、锂辉石、锆英石等矿物, 被玻璃体紧密包围, 热冲击性优良, 化学稳定性好, 无毒无害无放射性, 是一种成本低、寿命长、效率高的远红外辐射体。

The black porcelain far-infrared radiation plate, which is made of vanadium slag, has a wide range of sintering temperature, extrusive coloring role and excellent ceramic performance. The content of transition metal oxide in the fouth cycle is more than 80%. The radiation rate was up to 0.95, and after 2 000 hours of 650 ℃ accelerated aging test, the radiation rate does not change, and the surface layer does not fall off. By SEM analysis on fracture morphology and microstructure, the blank plate was composed of ilmenite, board-ilmenite and anemousite, and the particles were mechanically mixed, and black porcelain plate was composed of grain, vitreous body and pore, and most metal oxide in raw material were enriched in the grain, and the formation of cordierite and spodumene, zircon and other minerals were surrounded by vitreous body, which has excellent chemical stability. Non-toxic, harmless, non-radioactive, was a kind of far-infrared radiant of low cost, long life, high efficiency.