4. SY-BL energy saving alum billet heating furnace is an equipment which is necessary for alum profile factory and alum profile company. 铝型材短棒加热炉SY-BL SY-BL节能铝棒加热炉是一种铝型材生产厂家及铝型材企业必备的铝材生产装置。
5. This paper studies preparation method of potassium sulfate using ferrous sulfate (a by-product of titanium white) and potassium chloride as material by ferric potassium alum conversion method. 以钛白副产绿矾和氯化钾为原料,采取硫酸铁钾转化法制备硫酸钾。