Sodium percarbonate were produced by by-product alkali residue of hydrazine hydrate as the material and wet low temperature synthesis crystallization method. 以水合肼副产碱渣为原料,选择湿法低温合成结晶法制备过碳酸钠。
This process has the advantage of high utilization rate of borax and high value-added of by-product comparing with the traditional method. 该方法与传统硼酸生产方法相比具有硼利用率高、副产物价值高等特点。
In this paper, firstly, the formation of by-product caused by surplus residual chlorine of water and its bad effect on human was discussed, as well as existing method of disposing chlorine was compared and discussed. 本文首先从水中过量余氯导致的副产物的形成,以及副产物对人体的危害几个方面进行讨论,并对目前已有的除氯方法进行比较探讨;
And get a by-product: Using inverse interative method, engineer decided times of iterative as a matter of experience. 还得到了一个附产品:工程师用带原点位移的逆幂法(简称反迭代法)解(1)的有限元特征方程时,靠经验确定反迭代次数。
At first, the craft and conditions of the synthesis of micaceous iron oxide with by-product of TiO2-ferrous sulfate by hydrothermal method was studied through experiments. 通过实验,研究钛白副产硫酸亚铁水热法合成云母氧化铁的工艺路线及条件。