I. Introduction slag dryer slag dryer is widely used in building materials, metallurgy, mineral processing, chemical, cement and other industries, can be used for drying slag, carbide slag, limestone, clay, sand, quartz sand, slag and other materials. Kefa slag dryer use for a variety of combustion furnace: boiling hot furnace, furnace coal grinding powder and artificial plus two coal stove, dryer works a slag, slag upgrade by belt conveyor or bucket elevator to the hopper, then by feeding hopper feeder through a pipe into the feed end. 2, the slope of the pipe feeding the natural inclination to be greater than the material in order to smooth the material inside the dryer flows into mine. 3, a dryer cylinder is slightly inclined to the horizontal rotating cylinder. Material from the higher end of the join, the heating medium enters from the lower end, into countercurrent contact with the material, but also the heating medium and material together and flow into the cylinder. 4, with the rotation of the cylinder material by gravity to run to one end than at the end. Wet material in the cylinder body to move forward the process, directly or indirectly, the heat carrier to the wet material to dry, then the discharge end by the belt or screw conveyor sent. Contact surface 5, slag dryer cylinder of wall mounted copy board, its role is to copy the material up and planted again, so that the material and increases airflow to improve the drying rate and to promote material progress. 6, after the heating medium through the dryer, will generally require cyclone brought down material trapped within the gas (heating medium is generally divided into hot air, flue gas, etc.). To further reduce exhaust gas dust content, but also through the baghouse or wet dust collector and then put emissions. Third, the slag slag dryer drying equipment production line production line, mainly from the rotary cylinder, the wind equipment, high-speed broken equipment, lifting plate, self-cleaning device, gear, transportation equipment, hot air equipment, gear, support equipment and the composition of the sealing devices and other components. A full set of drying equipment designed, well-made, stable performance, advanced technology, high output, low power consumption, small size, the degree of mechanization advantages. Fourth, the slag dryer specification model and technical parameters: Size (m) processing capacity (t / h) Motor Model → power (kw) reducer Model feed moisture (%) coal calorific value of the fuel moisture content (% ) Weight (T) Φ0.6x6 0.5-1.0 M160M-6 → 3 ZQ200Ⅱ-25 25 ± 5 ≥5500 ≤13 2.9 Φ0.8x8 0.8-2.0 M160M-6 → 4 ZQ250Ⅱ-25 25 ± 5 ≥5500 ≤13 3.5 Φ1 .0x10 1.0-2.5 M160M-6 → 5.5 ZQ250Ⅱ-25 25 ± 5 ≥5500 ≤13 5.6 Φ1.2x10 2.5-3 M160M-6 → 7.5 ZQ350Ⅱ-25 25 ± 5 ≥5500 ≤13 14.8 Φ1.5x14 7-9 Y180L -6 → 15 ZQ400Ⅱ-31.5 25 ± 5 ≥5500 ≤13 17.8 Φ1.5x18 9.5-12 Y180L-6 → 15 ZQ400Ⅱ-31.5 27 ± 5 ≥5500 ≤13 21.2