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现代矿业 ›› 2024, Vol. 40 ›› Issue (02): 173-175.
为提高唐山某低锌高炉灰的综合利用率，达到入窑锌粉锌品位6%左右的要求，进行了
旋流器分级分选+螺旋分选机分选试验。试验结果表明：①锌品位1.75%的高炉灰经1粗1精两段旋
流器分级分选，最终可获得锌品位分别为 5.96%、6.27%，锌回收率分别为 47.10% 和 44.21% 的锌粉。
②对产率 15%左右的二段旋流器底流采用螺旋分选机分离铁、炭，螺旋分选机内圈产品铁品位分别
为 47.76%、48.98%，可作为低品位铁产品，或并入底流 1一并开展后续选铁试验；螺旋分选机中圈和
外圈产品铁品位在34%左右，热量值在2 500 cal/kg左右，铁品位和热量均不高，且粒度较细，处理难
度大，没有再处理或作为单独产品的意义。研究确定了较理想的锌回收工艺，可作为开发利用依据
In order to improve the comprehensive utilization rate of a low zinc blast furnace ash in
Tangshan and achieve the requirements of zinc powder into the kiln zinc grade of about 6%，the cyclone
classification separation + spiral separator separation test was carried out. The results show that: ①The blast
furnace ash with zinc grade of 1.75% was separated by one roughing one cleaning two-stage cyclone separa⁃
tion. Finally，zinc powder with zinc grade of 5.96% and 6.27%，zinc recovery of 47.10% and 44.21% were
obtained. ②For the underflow of the two-stage cyclone with yield of about 15%，the spiral separator is used
to separate iron and carbon. The iron grades of the inner ring products of the spiral separator are 47.76% and
48.98%，respectively，which can be used as low-grade iron products or incorporated into the underflow 1 to
carry out subsequent iron separation tests. The iron grade of the middle ring and outer ring products of the
spiral separator is about 34%，and the heat value is about 2 500 cal/ kg. The iron grade and heat are not
high，and the particle size is fine and the treatment is difficult. There is no significance of reprocessing or as
a separate product. The study determined the ideal zinc recovery process，which can be used as the basis for
development and utilization.
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