用于获得含硫量减少的炭黑粉末的方法

本公开涉及种用于获得含硫量小于0.07％的炭黑粉末的方法。所述方法包括以下步骤：使含硫量为1％至2％的炭黑粉末与碱金属或碱金属的盐在流体介质中、在100℃至350℃范围内的温度下以及在10psig至500psig范围内的压力下反应。已发现的是，利用根据本公开的方法，含硫量大体上从约1.25％的含硫量减少至0.05％的含硫量，从而引起约96％的脱硫。 The present disclosure relates to a process for obtaining carbon black powder with a sulfur content of less than 0.07%. The process includes step of reacting carbon black powder with a sulfur content of 1-2% with an alkali metal or salt thereof, in a fluid media, at a temperature in the range of 100° C. to 350° C. and pressure in the range of 10 to 500 psig. It is found that in accordance with the process of the present disclosure, the sulfur content was reduced substantially from that of about 1.25% to that of 0.05%, resulting in about 96% desulfurization.