[Retracted] Application Study of Sigmoid Regularization Method in Coke Quality Prediction

Table 1

The range of content of mixed coal corresponding indicators and the impact on coke production.

Index of mixed coal	Range (%)	Effect
Mt	0 << 8	Bad for processing and transportation, deteriorates thermal stability and thermal conductivity when burning, and reduces the coke yield and extends the coking cycle when coking.
Ad	9 << 10	Leads to sudden drop of the cold state strength, the increase of residue in a blast furnace, and finally production reduction.
Vdaf	24 << 30	The product yield of coking gas and chemical products can be improved by appropriately adding high volatile coal.
St,d	0.6 << 0.7	The sulfur content of pig iron is directly affected by it, and the quality of pig iron is declined.