The atomization of black liquor with splashplate nozzles was studied experimentally. A black liquor spray rig was built for the experiments. Water, glycerol, and mixtures of water and glycerol were first used in testing of the spray rig. Two different black liquors were used in the experiments, one from softwood pulping and the other from hardwood pulping. The maximum flow rate of the liquor was 1 500 l/h.