Abstract: In order to study the effects of diluent on the performances of the coatings prepared by converter dust,high solid anti-corrosion coatings were prepared by the converter dust with an average particle size of 59.33 μm.Using benzyl alcohol as the diluent,its effect of addition amount on the properties of the high solid anti-corrosion coatings was investigated.With increase of the diluent content,the viscosity of high sol-id anti-corrosion coatings reduces coupled with the decrease in surface bubble content of the coating film, and the corrosion resistance to salt water for the coating film decreases but its acid corrosion resistance in-creases.When the dosage of diluent is 15%,the coating film is more resistant to acid corrosion.