Drum dryer is a drying equipment, the use of a wide range of equipment in mining. Divided into direct heat rotary drum dryer and indirect heat transfer drum dryer. Divided into direct heat rotary drum dryer (drying medium in direct contact with the wet material to transfer heat) and indirect heat transfer drum dryer (dry heat required by the tube wall heat transfer in accordance with the wet material drying medium between Indirect passed to the wet material) two. Low indirect heat transfer drum dryer efficiency and structure of complex reasons, very few to choose from, not in this presentation. Direct heat transfer drum dryer, the drying medium in the direction of the flow of material, is divided into two kinds of downstream and upstream. The main part of the direct heat transfer drum dryer for a slightly inclined to the horizontal rotating cylinder. The cylindrical gear, the rotational speed is generally 2 ~ 6r / min, the inclination of the cylinder about its length, typically between 1 ° ~ 5 °. Material from the higher section of the drum into contact with hot air, with the rotation of the cylinder, the material flows under gravity lower end being dried and discharged. Since the drying machine is working under negative pressure, the feed and discharge end seals are used to prevent air leakage. Drying wet material from the belt conveyor or bucket elevator to the hopper, then through feeder hopper through feed pipe into the feed end. Feed pipe slope is greater than the natural inclination of materials, so that a smooth material flow into the dryer. A dryer cylinder is slightly inclined to the horizontal rotating cylinder. Material from the higher end of the added heat carrier from the low-end entry into countercurrent contact with the material, but also heat carrier and the material together and flow into the cylinder. With the rotation of the drum material by gravity to run to one end than the end. Wet material in the cylinder body to move forward the process, directly or indirectly, the heating medium to heat the wet material to dry, then the discharge end by the belt or screw conveyor sent. Contact surfaces in the cylinder body wall mounted copy board, its role is to copy the material up and planted, so that the material and increases airflow to improve the drying rate and to promote material progress. Heating medium is generally divided into hot air, flue gas. Heat carrier through the dryer after the cyclone will generally require gas trapped within the material brought down. To further reduce exhaust gas dust content, but also through the baghouse or wet dust collector and then put emissions of the main features: 1. Multi-modular lifting equipment design and production of dryers in the lifting device system He made many technological innovations, combined with a new multi-lifting equipment, to overcome the traditional dryer "wind tunnel" phenomenon, high thermal efficiency, reduce coal consumption by about 20%. 2. Use for a variety of combustion furnace: boiling hot furnace, grinding coal powder furnace and artificial increase coal stove. 3. The drive gear size can be changed using the pin gear, replacing the traditional steel gears, cost of investment, but also greatly reduces maintenance costs and time. The centralized control system, enabling the central computer monitoring and management of large enterprises. 5, greater production capacity, continuous operation; 6, simple structure, easy to operate; 7, less failure, low maintenance costs; 8, wide application, you can use it dried granular material, those materials are attached to large very favorable; 9, operating flexibility, production allow products on the production of large fluctuation range, will not affect the quality of the product; 10, cleaning easy. Henan Chen million Environmental Engineering Technology Co., Ltd. is a professional production of kiln equipment, large-scale comprehensive joint-stock enterprises broken equipment, screening equipment, sand washing equipment, processing equipment, sand making equipment and drying equipment, the company is located in Zhengzhou, Henan Province City neighborhood, an area of ??50,000 square meters, annual output value reached 80 million yuan, the company has 4500 square meters of heavy industrial plant two, a variety of large and medium-sized metal processing, welding, assembly equipment more than 150 sets maximum lifting assembly capacity of 150 tons, is currently the major professional manufacturer of mining equipment. I engaged in machinery manufacturing for many years, has a very rich and professional experience. Our morning million people will uphold "honesty cast brand, Germany on society," the morning billion company philosophy - will be professional standards and dedication to your service, your satisfaction is our relentless pursuit! ! Henan Chen billion environmental Engineering Technology Co., Ltd. Tel: 13938472091 Fax: 0371-55225891 E-mail: chenyikeji01@126.com Website: http://www.chenyikeji.cn http://www.chenyikeji.net http: // www. cykjshy.com http://www.cykjly.com http://www.cykj168.com http://www.hncygckj.com http://www.chenyikj.com http://www.cyhgj.com http: //www.sfxksb.com http://www.ztxsjx.com http://www.ztslx.com