sodium sulphide वाक्य

Pulps for paper . quantity determination of sodium sulphide in pulp liquors for papermaking
A new method was introduced in this paper : the practability of adopting sodium sulphide instead of hydrogen sulphide for colorific agent has been studied and determinated the optium test condition
Abstract : in order to comprehensively recover the valuable metals , it ' s necessary to use the method of removal of impurity of sodium sulphide in ammonium molybdate production with high tungsten and low potasium molybdenum concentrate . the process of comprehensive utilization of this slag was related