青海大柴旦石棉成浆性试验研究

Experimental Study on Asbestos Pulping Performance of Dachaidan in QingHai

本文对青海大柴旦石棉原矿进行了物理化学性能检测,选用磺化琥珀酸双-2-乙基己酯钠盐(快T)、甲基纤维素等表面活化剂对石棉进行表面改性,研究了改性剂种类、添加量、水棉比、浸泡时间等对其成浆性能的影响。试验表明:当水棉比为10∶1、石棉纤维浸泡时间为8h、快T用量为10%时,石棉成浆的粘度值为300mPa.s,成浆性能较好。

Physical and chemical properties of raw asbestos of Dachaidan in Qinghai were tested.The surfactant,such as sulfonate 2-ethylhexyl sodium,methyl cellulose and the like,were selected as asbestos surface modifiers.The influence of modifiers,addition,the ratio of water to asbestos,and immersion time on pulping performance of asbestos were studied.Through a lot of experiments,it is showed that the ratio of water to asbestos is 10：1,the immersion time is 8 hours and the addition of sulfonate 2-ethylhexyl sodium is 10%,viscosity of asbestos pulp is 300mPa·s and the pulping performance of asbestos pulp is optimum.