Traveling grate is an equipment which uses exhaust heat and hot air from a annular cooler &rotary kiln to dry green iron pellets, preheating, oxidation of consolidation and then directly feed into the rotary kiln.The powder from the traveling grate is collected to the hopper and reused. Traveling grate is thermal equipment working under high temperatures, so the main parts of the equipment are heat-resistant alloy.
According to different equipment working temperature, material combination and overall process the traveling grate can be divided into DRI pellet traveling rate, oxidized pellet traveling grate and low temperature reduction traveling grate. capacity rangings from 200,000 tons / year to 5,000,000 tons / year.
Our factory started to develop traveling grate relying on the grate national experts by 1996, and the first set of traveling grate is successfully designed and manufactured in 1997 with the capacity of 200,000 tons of oxide pellets grate per year. now It is able to design and manufacture traveling grates with capacity from 100,000 t/a to 5,000,000 t/a. During these 10 years of development of manufacture, installation and commissioning practice, the factory has mastered the heat-resistant material technology, scraper board technology, kiln sealing technology, gear technology, traveling grate bed expansion technology, the whole structure technology installation technology, and troubleshooting techniques and put all these techniques into manufacture, installation and maintenance.
After feeding the pellets to the traveling grate, the unit operations of green ball drying, concentrate dehydration, partial calcination, and partial induration are performed on a traveling grate, whereupon heat transfer occurs in zones of the grate from the cross flow of process gas (hot air) repeatedly passed through the pellet bed in a modified countercurrent fashion.
The traveling grate is comprised of chain that carries the pellets like a conveyor. The difference is that the grate chain allows air to pass through it. The grate chain travels flat and strait. There are several compartments the pellets are exposed to different heat. Once the pellets are discharged into the kiln the grate chain returns underneath. The grate is driven by a motor with gearbox or hydraulic drive. The grate is supported by rollers.
Technical Data(oxidized pelletizing process):
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Jinan Joysun Machinery Co., Ltd., relying on strong technical support, advanced production equipment, excellent processing technology and scientific detection methods, we ensure product quality and delivery time, and provide a fully optimized technical solution according to your requirements. Jinan Joysun Machinery Co., Ltd. for thawing of meat products and seafood, the equipment has stable performance, reliable quality and short thawing time. It is an ideal defrosting equipment for high-tech meat products, made of stainless steel, conforming to food production standard. Welcome new and old customers to inquire. Our international business covers customers all over the world. We have competitive prices and are proud of our excellent after-sales service. The working attitude of the company and the continuous improvement of the innovation concept will lead Tuo Bo and you to step into the brilliant future hand in hand and create a better future.
Through continuous exploration and practice, the company has developed the advantages of low investment, high efficiency, low operation cost, high product quality and convenient control and operation. The microwave frequency thawing equipment with microwave frequency of 915MHz and output power of 20kw-200kw is above. For food processing enterprises such as chain fast food industry in China, food thawing is provided, and the improvement of food thawing technology in China is also renewed. The benefit is not only "farsightedness", but also at the foot of the eyes. According to experts, the traditional food thawing are based on heat conduction method, material surface temperature is higher than the internal temperature in the thawing process, inevitably there will be drop loss, which will increase the business loss. If merchants use microwave dryer, Traveling microwave Grate Dryer for Iron Ore Pelletizing Plant power, material temperature and transmission speed can be used to achieve adjustable linkage, and the overall heating process control advantages can greatly reduce material consumption and improve food utilization. In addition, as the microwave thawing only needs electricity, no need to consume a lot of water, in the low carbon era, this is not lost a recommended fashion trend.
microwave dryer is a new type of environmental protection drying method. When dry, Traveling microwave Grate Dryer for Iron Ore Pelletizing Plant directly to the medium molecules converted into heat, because the Traveling microwave Grate Dryer for Iron Ore Pelletizing Plant penetrating performance of heating medium and at the same time, no need to heat conduction, so the heating speed is very fast, the water content below 30% of the food, the drying speed can be shortened hundreds of times.
microwave dryer advantages of equipment
1, microwave dryer, short, fast
Conventional thermal sterilization is used to transmit heat from the surface of the food to the interior through heat conduction, convection, or radiation. It often takes a long time to get the germicidal temperature. The Traveling microwave Grate Dryer for Iron Ore Pelletizing Plant is the direct interaction between microwave energy and microorganisms such as food and bacteria. The interaction between heat effect and non thermal effect can achieve fast warming and bactericidal action, and the processing time is greatly reduced. The sterilization effect of various materials is usually 3-5 minutes.
2, Traveling microwave Grate Dryer for Iron Ore Pelletizing Plant low temperature sterilization keep the nutrition and traditional flavor The Traveling microwave Grate Dryer for Iron Ore Pelletizing Plant is through special heat and non thermal effect sterilization, compared with conventional thermal sterilization, it can get the desired disinfection effect at relatively low temperature and short time. Practice shows that the general sterilization temperature can reach the effect at 75-80 degrees centigrade. In addition, microwave dryer processed foods can retain more nutrients and color, aroma, taste, shape and other flavors, and have puffing effect. For example, the vitamin C retained in vegetables treated by conventional heat treatment is 46-50%, while that in microwave treatment is 60-90%, while that in conventional heating is 58%, while that in microwave heating is 84%.
3 microwave dryer and Traveling microwave Grate Dryer for Iron Ore Pelletizing Plant save energy Conventional thermal sterilization often has heat loss in the environment and equipment, and microwave is directly treated to food, so there is no extra heat loss. In addition, the conversion efficiency of the electric energy to the microwave energy is in the 70-80%, and the power is generally reduced to 30-50%.
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