DUSHANBE, October 4, 2010, Asia-Plus — Russian company, Sofo, will supply additional equipment to Tojikcement (Dushanbe cement plant) for installation of a coal-powered rotary kiln, the Tojikcement deputy director Muzaffar Hakimov told Asia-Plus.
According to him, Sofo is expected to send the equipment to Tajikistan within the next few weeks. Specialists from Chinese company, Jun Hao (phonetically spelled), will install the kiln, the deputy director said.
We will recall that one of six rotary kilns at the Dushanbe cement plant shifted to coal was expected to be introduced into operation in July but the launch was postponed until the end of the year for technical problems.
The project for shifting of one the plant’s rotary kilns from natural gas to coal has been designed in cooperation with Chinese company, Jun Hao. One kiln conversion will come to approximately 7 million somoni (some US$1.6 million) and all plant’s rotary kilns will be shifted to coal gradually, during several years.
The Dushanbe cement plant has four large rotary kilns with capacity of 600 tons cement per year each and two small rotary kilns with capacity of 300 tons each.
Cement kilns are used for the pyroprocessing stage of manufacture of Portland and other types of hydraulic cement, in which calcium carbonate reacts with silica-bearing minerals to form a mixture of calcium silicates. The cement kilns are the heart of the cement production process: their capacity usually defines the capacity of the cement plant.
