METHOD OF DEHYDRATION OF CHLOROMAGNESIUM RAW MATERIAL AND A DEVICE FOR ITS REALIZATION Russian patent published in 2005 - IPC

FIELD: nonferrous metallurgy; preparation of chloromagnesium raw material for electrolysis to produce metallic magnesium and chlorine.

SUBSTANCE: the invention is pertaining to nonferrous metallurgy, in particular to preparation of chloromagnesium raw material for electrolysis to produce metallic magnesium and chlorine. The method of dehydration of chloromagnesium raw material includes consecutive dehydration of chloromagnesium raw material in multichamber furnaces of a boiling layer by the chimney gases produced at combustion of a mix of natural gas, air and chlorine in a furnace extension of the furnace and fed through a small angle into the layer; chilling by air of the cavity of the small angle and the bottom of the gas-distributing grate, trapping of the exhaust gases. The furnace gases and air used for chilling in the small angle are fed separately. At that air is used for continuous chilling of the upper part of the small angle above a partition and the heated in the small angle air is fed to mixing with the chimney gases. The device for dehydration of the chloromagnesium raw material includes a multichamber furnace of the boiling layer consisting of the furnace body with branch-pipes for the raw material input and output, withdrawal of a finished product with partitions, forming the cambers, a gas-distribution grate in the form of bottom with holes, with an air-cooled torsion box and the gas-distribution caps in the form of the hollow angle located above the horizontal row of the holes of the bottom, a furnace extension and cyclones. The device in addition has a partition rigidly mounted inside the small angle and dividing it in height into the upper and the lower parts. In the lower part of the surface of the small angle there are windows for outlet of the chimney gases, and the ribs of the small angle are rigidly attached to the bottom. At that the windows of the small angle are placed on the same axis with the holes, and each row of the windows is shifted in respect to each other. The invention allows to increase productivity of the device.

EFFECT: the invention ensures increased productivity of the device.

7 cl, 3 dwg, 1 ex