黑荆木材硫酸盐法制浆试验研究

An Experimental Study Report on the Pulping of Acacia mearnsiiTimber by Adopting the Sulfate Process

试验对６年生黑荆木材硫酸盐法制浆工艺进行正交试验，得出最佳制浆工艺为：用碱量１５％，硫化度２０％，最高温度１６５℃，保温时间１２０ｍｉｎ，细浆得率５１．６１％，硬度１２．０８Ｋ值，黑液残碱４．７０ｇ／Ｌ，纸浆纤维平均长度０．８４５μｍ，平均纤维宽度１５．８４μｍ，长宽比为５３．３３，接近黑荆木材的纤维形态；利用该纸浆手工抄纸，定量为５．８６ｇ／ｍ２，纸张拉力为３．３４ｋｇ，裂断长度为３８４２ｍ，表明黑荆木材适宜作为造纸的原料。

The orthogonal experiment was performed for the pulping technology of 6- year- old Acaciamearnsii timber by adopting the sulfate process and the optimal pulping technology was ob- tained which was as follows :the alkali amount used was 15%,the vulcanization degree was 20%,the highest temperature was 165℃,the retention temperature time was 120 minutes,the fine pulp obtainment rate was 51.61%,the hardness was 12.08K value and the residual alkalis of black liquor were 4.70g/L.The average length of pulp fibre was 0.845mm,the average width of fibre was 15.84μm and the ratio of length to width was 53.33,which were close to the fibre morpholo- gy of A. mearnsii timber.The fixed quantity was 5.86g/m2 , the pulp tensile force was 3.34kg and the breaking length was 3842m by utilizing the present pulp to manually manufacture paper,which indicated that A.mearnsii timber was suitable as the papermaking material.