Optimizing Yield Comparison of an Iron Ore Fine Grinding Intermediate Grain Size by Orthogonal Test Method and Response Surface Method

Abstract

Abstract: Using the orthogonal test method and response surface method, aiming at the low yield of intermediate easy-to-selection grades of an iron ore grinding product in Shanxi, the single factor test was used to explore the effects of grinding time, grinding concentration and medium filling rate on the yield of intermediate easy-to-selection grades, and the experimental research on optimizing the yield of the fine grinding intermediate grain size was carried out. The results show that the optimal intermediate easy-to-selection grade yields obtained by the orthogonal test method and response surface method are 81.27% and 81.80%, respectively. The optimal grinding condition obtained after optimization by response surface method is as follows: grinding time 14.15 min, grinding concentration 70.80% (mass fraction) and the filling rate 30.50% (volume fraction). This condition is better than the best condition of orthogonal test method, and the response surface method has certain advantages in the influence of the interaction between the analysis factors on the yield of the intermediate easy-to-selection grade. The study clarifies that the response surface method can fully realize the purpose of increasing the yield of intermediate easy-to-selection grades of grinding products, and provide a reference method for similar problems in related factories and mines.

Key words: response surface method, orthogonal test method, fine grinding, intermediate grain size, yield

CLC Number:

TD921⁺.4

PEI Yingjie, XIAO Qingfei, ZHANG Qian, MA Shuai, WU Yukai. Optimizing Yield Comparison of an Iron Ore Fine Grinding Intermediate Grain Size by Orthogonal Test Method and Response Surface Method[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(4): 1304-1311.

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