配煤对煤灰熔点和水煤浆性能影响的研究

Research on the effects of coal blending on the ash fusing point and coal water slurry

配煤可以显著降低高灰熔融性煤的灰熔点 ,降低或免去添加助熔剂 ,配煤灰熔点变化并不是两种煤的灰熔点加和值 ,配煤的灰成分具有加和性。添加适当的助熔剂是高灰熔融性煤的配煤制浆的较佳选择。利用淮南煤配煤制浆可以有效提高难成浆煤种的制浆浓度 ,一般可以提高 3%～ 5 %。

Ash fusion point of high ash fusible coal can be reduced effectively by coal blend technique.The change of ash fusion point for two blended coal is nonadditivity.The ash fusion points are influenced largely by coal ash components.The addition of proper flux to high ash fusible coal is a good choice for preparing coal water mixture. The effects of coal blending on the features of coal water slurry are nonadditivity.It can effectively improve the concentration of coal water slurry,generally 3～5%,for coals which have difficulty in preparing slurry.