Research on Improving Quality and Increasing Production in Response to Changes in Ore Properties in Mineral Processing Production
Because of the depletion of mine resources in the Sandaogou Concentrator of Tonggang Huadian Mining Company,the ore supply unit was changed.The ore properties have changed greatly,the ore is difficult to grind and beneficiate,the output and quality of iron concentrate have deteriorated,and the hourly feed volume into the mill has decreased from 78 t/h to 65 t/h,and the grade of iron concentrate has decreased from more than 66%to between 60%and 64%.In order to solve the problem,the Sandaogou Concentrator adopted an attempt to replace the vibrating screen sieve plate with small-sized sieve holes and reduce the ore feed amount in the previous production,but the effect was not good.Therefore,the Sandao-gou Concentrator carried out equipment transformation in the crushing workshop to reduce the particle size of the powder ore,and try to reduce the particle size of the final product of crushing as much as possible.And use a linear vibrating screen instead of a spiral classifier to improve the classification efficiency in the grinding and beneficiation workshop,add a high-frequency fine screen,improve the screening efficiency by increasing the screening area,and use an automatic elutriation magnetic separator instead of a magnetic separation column to improve the concentrate grade.Finally,hourly feed volume into the mill increased to 74.64 t/h,the grade of iron concentrate increased to 66.30%.Through the transformation of the existing beneficiation process equipment,it is possible to improve the quality and increase production under the condition of difficult ore grinding and beneficiation,and meet the requirements of production indicators.
ore propertiesdifficult to grind and beneficiationgradeimprovementproduction capacity
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