COAL ENGINEERING ›› 2016, Vol. 48 ›› Issue (11): 124-127.doi: 10.11799/ce201611035

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Grey-model forecast of coal flotation with sodium silicate

  

  • Received:2015-12-10 Revised:2016-03-14 Online:2016-11-10 Published:2016-12-16

Abstract: Added sodium silicate as depressant in flotation can to reduce the ash content of of concentrate and improve the separation effect. The ash content reduced by 2.13% with sodium silicate 1000g/t. Based on the flotation experimental results and grey system theory, a forecast model GM (1, 1) for coal flotation with sodium silicate was proposed. The precision of the model is high through the checkout by posterior variance examination. The results show that GM (1, 1) is a valid forecast model to estimate the effect of coal flotation with sodium silicate.

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