Evaluation of selected chemical processes for production of low-cost silicon (Phase III). Silicon material task, low-cost solar array project. Eleventh-twelfth quarterly progress report, April 1--September 30, 1978

Development of a process for producing high-purity silicon by zinc reduction of silicon tetrachloride in a fluidized bed of seed particles to yield a free-flowing granular product is reviewed. Progress in finalizing the design of a 50 MT/year experimental process facility is reported. (MHR)