We developed a system suitable for rapidly measuring hydrogen content in magnesium melt employing PLC and controlled circuit by designing hardware and software based on mathematical models.

The results show that electrolyzing SrCl2 and CaCl2 in Mg-Al alloy melt could generate Mg-Al-Sr-Ca alloy directly.

By using fused magnesia and sintered spinel as main materials and sulphite liquor as binders,magnesium compound side gate was researched.

MgO-ZrO2 samples were prepared by fused magnesia and zircon.

In this paper, effect of properties of advanced magnesite-chrome brick on fine powder turning very small, the chromium concentrate powder and fused magnesia powder content, the amount of Zirconium dioxide to be studied identified RH furnace quality magnesite-chrome brick in the best process technique.

For exploring optimum flux structure and achieving biggest profit, the industrial experiment has been done by means of replacing light-burned magnesian limestone by magnesian limestone as magnesian flux under the condition of using lime as calc-flux.

The effect of additions on properties of the dry magnesite refractory was investigated with fused magnesite as main raw materials,microsilica and sintering promoter as additions.

The raw material is made up of fused magnesite particles(particle size 0 to 3 mm),fine fused magnesite powder with the size less than 200 meshes and fine fused magnesia-zirconia s powder with the size less than 320 meshes,polyvinyl alcohol and calcium lignosulfonate liquor being used as the combine.