| 摘要 |
Production of phosphorus by reaction of a mixture comprising calcium phosphate, quartz sand and coke. The reaction is effected at 1,300 DEG to 1,700 DEG C by electrical heating in an autogenous bed of fluidized coke. The coke is used in particles with a size of 0.1 to 5 mm, and each of the calcium phosphate, quartz sand and coke components forming the mixture is used in particles with a size of 0.01 to 5 mm. The reduction furnace used in carrying out this process is comprised of a carbon furnace vessel which is fitted with at least one movable electrode projecting into it from above, a refractory heat insulation encapsulating the furnace vessel, at least one raw material inlet, at least one outlet for removal of furnace gas containing phosphorus and carbon monoxide, at least one tapping hole in the bottom portion of the vessel and the heat insulation encapsulating the vessel, for tapping off slag and ferrophosphorus. |
