What is the sand dryer?
Sand dryer, also known as sand drying machine or quartz sand dryer, is a large number of materials to deal with the drying equipment. It features the advantages of reliable operation, operational flexibility, adaptability and large capacity. The river sand dryer is generally suitable for granular materials. Especially for drying sand, river sand, quartz sand and other drying effect, the feature are excellent. River sand dryer also has the strength of the production capacity, wide application, small flow resistance. The operation of the dryer allows a larger range of fluctuations, easy to operate and so on. Commonly used in drying sand, artificial sand, quartz sand, slag, cinder and so on.
The composition of the machine: the roller, the trailer, pinion, the material part, lifter blade, the front roll, reducer, motor, hot air duct, feed chute, furnace and other components. Every part serves their own roles. In addition, according to user needs design, there are some auxiliary equipment, such as a gas furnace, combustion chamber or supporting hoist, belt conveyor, dosing machine, cyclone, fan can be installed.
There are some materials which are suitable for the dryer: sand, mortar, yellow sand, cement, slag, clay, coal gangue, mixture, fly ash, gypsum, iron powder, limestone. In addition, there are some industries applied to this dryer: building materials industry, chemical industry and other heavy- duty industries. In a word: the dryer is mainly used for fly ash, slag, sand, coal, iron powder, ore, blue carbon and other materials drying.
How to work?
The sand is conveyed by the belt conveyor or bucket elevator to the hopper and then fed through the feed pipe through the hopper to the feed end. The inclination of the feed pipe is greater than the natural inclination of the material, so that the material flows smoothly into the sand dryer. The dryer cylinder is a rotating cylinder slightly inclined with the horizontal line. The material is fed from the higher end, the heating medium enters from the lower end, which comes into contact with the material. Then the heating medium and the material flow together into the cylinder. As the rotating material of the cylinder is operated by gravity to the bottom end. Wet material in the cylinder forward movement process, directly or indirectly get the heating body of the heat, so that the wet material to dry, and then at the discharge end by the belt conveyor or screw conveyor. In the sand dryer cylinder wall is equipped with copy board, its role is to take the material and spread, so that the material and air contact surface increased to improve the drying rate and promote the material forward. Heating body is generally divided into hot air, flue gas and so on. After the heating body of the dryer, the cyclone dust is generally required to bring the gas within the material collected. If you want to further reduce the exhaust dust content, but also through the bag in addition to dust or wet dust collector and then put emissions.
1. High economical benefit and low wear rate. Equipment investment is 20% of foreign imports, the use of wear-resistant manganese plate manufacturing, wear-resistant 3-4 times than ordinary steel plate. No leakage phenomenon, completely solve the sealing difficulties.
2. High efficiency. Material initial moisture 15%, the final water to ensure that 0.5-1% below, is the cement plant slag powder, dry mortar production line and other drying products preferred products. Compared with the traditional single-cylinder dryer to improve thermal efficiency of more than 40%.
3. Wide application. Fuel can be applied to white coal, bituminous coal, coal gangue, oil, steam. Can bake 20-40mm below the block material, pellets, powder material.
4. Low occupied. Compared with the single cylinder dryer, the reduction of floor space is about 60%. The reduction of civil construction investment is about 60%, which is easy to install.
5. Easy and simple operation. The materials’ discharge temperature ≤ 60 degrees can be directly in the library, without cooling into the cooling shed. The outer cylinder temperature ≤ 60 degrees, the exhaust gas temperature <120 degrees, dust removal equipment bag length of use more than 2 times. Coal consumption is a single cylinder dryer 1/3, saving 40%, tons of standard coal consumption <9 kg.