Barrel type drier with processing capacity of 3t/h～5t/h and the water content in ammonium sulfate below 0.

The synthesis process of potassium sulfate with ammonium sulfate recovered from industrial waste and potassium chloride method was studied.

The paper introduces the four kinds of production process of ammonium sulfate,and analyzes and discusses the process features,technology and economic index and equipment selection.

Direct determination of gold in ammonium thiosulfate solution by AAS;

MoO3/γ-Al2O3 catalyst has been presulfided by ammonium thiosulfate.

The isothermal phase diagrams of the system were constructed on the basis of the mass fractions of water,ammonium sulfate and ammonium thiosulfate saturated solution at 298 K.

Study on arsenic removal in the preparation of feed grade zinc oxide by ammonia-ammonium sulfate method;

Study on liquid-solid flotation separation of lead(Ⅱ) by sodium nitrate-ammonium thiocyanate-rhodamine 6G system;

Study on floatation separation of Pd(Ⅱ) with ammonium thiocyanate-tetrabutyl ammonium bromide-water system;

Floatation separation of copper in sodium chloride-ammonium thiocyanate-cetylpyridine bromide system;

In light of the principle of vanadium's valent state change,after samples are dissolved by weak nitric acid,in medium of around 15% nitric acid,the oxidant ammonium persulphate is immediately used to selectively oxidize V~(4+) to V~(5+).

With industrial monomer solution of dimethyldiallylammonium chloride(DMDAAC) as raw material,ammonium persulphate(APS) as initiator and Na_4EDTA as chelating agent,using the methods of adding initiator all at once,graduated increasing of temperature and stepwise initiation and polymerization,the polymerization process of preparing poly-dimethyldiallylammonium chloride(PDMDAAC) was researched.

Poly-dimethyldiallylammonium chloride(PDMDAAC)was prepared by using industrial dimethyldiallylammonium chloride(DMDAAC)aqueous solution with known impurities as starting material,ammonium persulphate(APS)as initiator,without addition of any transferring and terminating agents.