Mechanism analysis of electrochemical preparation of crystalline Ba_(1-x-y)Sr_xCa_yMoO_4 thin films with scheelite-structure;

Barium molybdate(BaMoO_4) films with scheelite-structure were prepared directly on metal molybdenum substrates by using constant current electrochemical technique with emphasizing on the growth characteristics of the films at the early stages.

They are mainly as follows: the crystalline nucleuses formed at the initial stage of the film growth possess the skeleton of the scheelite-structure;the crystalline nucleuses and the crystal granules which are just growing up are all porous,and the crystalline granules have the interstices of the beehive form obviou.

Simulations on the electronic structure and optical properties for the perfect raspite-structured PbWO_4 crystal;

Thermodynamics on soda decomposition of scheelite;

Effect of Carbon, Ferrosilicon and Silicon Carbide on Scheelite Reduction Kinetics;

Researches and applications of scheelite flotation with ZL collector;

Geological characteristics of the Yangjin'gou scheelite deposit of Jilin and its ore genesis;

Geologic features and genesis of the Yangjingou scheelite deposit,Hunchun,Jilin Province;

Geologic features and genetic mechanism of the Yangjingou scheelite deposit,Hunchun City,Jilin Province;

The paper summarizes the latest development of acid process for treatment of scheelite concentrate.

Scheelite that meet the requirement of tungsten leaching can be gained, at the same time, can gain high quality scheelite concentrate.

Flotation test study on the decreasing phosphorus of scheelite concentrate was carried out.

The paper present the pretreatment of scheelite middling with acid, further decrease the accompanying calcium containing carbonate and other harmful impurities, such as: SiO2, P As Fe Mn and Mo.