焦炭粉冷固成型用粘结剂的研制

Study on the Adhesive for Cold Consolidation Molding of Coke Powder

探讨了聚丙烯酰胺、葡萄糖、高岭土、AlCl3、腐植酸钠、水溶性苯酚—甲醛树脂和自制的水溶性树脂A (简称为树脂A)等对水玻璃改性的影响。结果表明 ,树脂A使焦炭粉冷固成型的球团的生球和干球强度明显提高。并确定了其较佳配方 :水与水玻璃的重量比为 4∶6 ,其总用量为 1 6 % (占干焦炭粉的重量百分比 ) ;树脂A用量为 0 2 4 % (占干焦炭粉的重量百分比 )。在此较佳条件下 ,所制球团的生球和干球强度 ,与用未改性水玻璃 (其中水与水玻璃的重量比为 3∶7,其总用量为 1 6 %(占干焦炭粉的重量百分比 )所制球团的生球和干球强度 ,几乎相等 。

The effects of modifying sodium silicate with polyacrylic amide,glucosan,kaolin clay,aluminum chloride(AlCl 3),sodium humate,soluble phenol-aldehyde resin and home-made soluble resin A(abbrev.Resin A)on the adhesives for cold consolidation molding of coke powder were studied.The results showed that the cold-bond briquette strength and the dry pellet strength are apparently improved by modified sodium silicate with Resin A,and it was also determined that the better batch formula of the modified sodium silicate with Resin A.A is that the weight percent of Resin A is 0 24%(on the base of dry coke powder weight),the weight ratio of water:sodium silicate is 4∶6 and the total weight percent of water and sodium silicate is 16%(on the base of dry coke powder weight).Strength of the cold-bond briquette and the dry pellet on the condition of the above better batch formula is almost equal to unmodified sodium silicate,which is 3∶7 weight ratio of water and sodium silicate with 16% total weight percent of water and sodium silicate(on the base of dry coke powder weight),but the water resistance and heat resistance of former pellets are better than that of the latters.