The rotary kiln is widely used in power plant engineering. And the kiln coating is introduced here.
The forming for kiln coating has many influencing factors. There are three main factors. 1 The chemical composition of materials: The kiln coating is the outcome of liquid phase to solid phase. If there are more aluminous and ferruginous composition, it is easier to forming the kiln coating. But if one kind of aluminous and ferruginous composition is much, it is difficult for the forming of kiln coating. 2 The temperature of flame: If the temperature is too low, it is difficult to form the kiln coating. If the temperature is too high, the kiln coating could form but it is easy to drop out. 3 The shape of flame: The short, and broad flame is erodent to the kiln coating. And the long flame is beneficial to form the kiln coating. But the heat will be scattered. In the course of operating, the users should pay attention to the flame shape and flame location and strictly supervise the production. And the functions of kiln coating has the following items. 1 It could protect the firebrick from high temperature and chemical attack. 2 It could store the heat, reducing the heat loss and increasing the heat efficiency of rotary kiln. 3 The rough surface of kiln coating could reduce the flow speed and prolong the reaction time of materials. If you want know more information about rotary kiln, please kindly pay attention to our blog.
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The stacker reclaimer is one large-scale and power-driven conveying machinery with tall frame, which make it easy to be influenced by wind. In order to fix the equipment after stopping work, the anchoring device and rail clamping device are used to avoid the slippage resulting from wind. When the stacker reclaimer is travelling, the rail clamping device is opened under the spring force. When the stacker reclaimer stops, the rail clamping device is closed under the force of heavy punch. The number of travelling car for driving is different according to the different type of the stacker reclaimer. The rotating device has high requirements on adjusting the speed. In general, dc drive system and ac variable frequency speed regulating are adopted. For example, the rotating device realizes the continuously viable of the boom through planetary reducer of two Y225-8 TH,22KW variable-frequency motor. The rotating speed of large car is 0.0525~0.099r/min, with ±110°of rotating degree. The main motor delivers power through three-phase automatic air switch. The transducer gets the power from power grid through alternating current contactor 2C1. The luffing mechanism of stacker reclaimer is mainly used to adjust the height of the boom to coordinate with other devices to meet the related requirements when reclaiming and stacking materials.
In some projects, the stacker reclaimer may coordinate with apron feeder, screw conveyor, crushing machines to complete the materials handling process. And the checking of conveyor components, feeder parts and related parts is very important. The stacker reclaimer is a high efficient equipment for the continuous loading and unloading of large bulk materials in modern industry. The stacker reclaimer has two types including portal stacker reclaimer and bridge stacker reclaimer.
The portal bucket wheel stacker reclaimer has a portal metal framework and adjustable crane span structure. The belt conveyor used as stacking materials is set beside the portal beam. And the tripper car moving along the portal frame is also set on the conveying line of belt conveyor. The bucket wheel is installed on the car which moves with crane span structure. When stacking materials, the materials are threw to the stock ground through belt conveyor on the materials ground, tripper car, belt conveyor used for stacking materials. Through the movement of portal frame and belt conveyor, the materials could form materials pile with certain shape. When reclaiming materials, the car travelling horizontally and bucket wheel reclaim the materials continuously. The bridge bucket wheel stacker reclaimer has no tall portal frame. The bridge frame is fixed without function of rising and falling. There is no belt conveyor used for stacking materials and tripper car. There is claw fixed on the car. When the car moves, the craw moves along the end face of the material pile, which make the top materials glide. The craw also could make the materials glide on average. The automated warehouse used at present has many varieties, which could meet the requirements of the merchants in many fields, such as mobile racking, disconnect-type, integral type, unitary type and etc. The merchant could select the suitable automated warehouse according to the actual demand, work environment, and used space.
The future trend of automated warehouse is the various application in many fields such as chemical industry, logistics warehousing system, medical treatment, automobile, machinery, electronic industry, tobacco industry, clothing industry and etc. And it will be used in more fields in the future. The other trend of automated warehouse is the superiority in the performance, which could promote the utility rate of space and further help reduce the wasting of resources. The usage of automated warehouse could promote the production efficiency, efficiency of operation, management level and etc. This kind of automated warehouse could make the whole process reach a coherent condition. In the future, the automated warehouse will be improved. More better automated house will be created. The modern people will get more benefit from the automated warehouse. The belt conveyor is widely used in the EPC companies. And the belt conveyor design is very important to influence the performance of the belt conveyor.
The deviation of the conveyor belt is the common problem during the operation of belt conveyor. The adjustment is very important, which could influence the production of coal and maybe damage the equipment. When the deviation of the belt occurs, we should judge the cause of deviation. After confirming the cause, we should take measures to solve the problems and make the equipment run in normal conditions. If some belts are off tracking inward and other belts are off tracking outward, we should seek the suitable method to adjust the belt. When adjusting the belt, we could move the idler forward along the belt. We should adjust the belt from the point of tracking. If the adjustment of idlers has reached the limit, we could add the number of idlers(only bearing bed). If the upper layer belt deviates in one side and sub-layer belt deviates in another side, this may result from large diagonal deviation. In this way, this could jack up the equipment frame, which makes the pressure of idler average. The belt in operation with load doesn't deviate, while it deviates without load. It is very common in hanging segment. If possible, we could reduce the tensity of belt and increase the height of equipment frame. As we all know, the belt conveyor components also could influence the performance of the whole conveying process such as stacker reclaimer, apron feeder, crushing machines, screw conveyor,and other segments of the whole project. So we also need to guarantee the quality of conveyor components. The mining equipments have many applications. And the structures of these machines are also complicated.
Pipe conveyor is a new conveyor transporting bulk materials in the state of sealing, which realizes environmental protection conveying. Pipe conveyor is suitable for complex topography, and could convey materials deviously in the three-dimensional space. Pipe conveyor could simultaneously and bilaterally convey different materials in upstream and downstream channels. The large conveying angle reduces the length of the equipment, land area and costs. For those advantages, the pipe conveyor has a bright market prospect. For the belt conveyor design, tractive effort the belt conveyor design needs is transferred through rubbing action between driving pulley of driving device and conveyor belt. So the friction drive forms. To ensure the transmitting of acting force and traction components' no slipping on the driving wheel, the following conditions must be met. (1) The traction components should have enough tension. (2) There should be certain roughness on the contact surface of traction belt and driving pulley. (3) Traction belt should have an enough surrounding angle on the driving wheel. The belt conveyor usually cooperates with reclaimer or stacker for EPC companies. Then how the bucket wheel reclaimer is made up? Bucket wheel reclaimer mainly consists of bucket wheel gear, hanging stick and top metal structure, boom belt conveyor, lift and tilt mechanism, slewing mechanism, revolving platform, running mechanism, door seat frame, handler's cab, control room, trailer and other devices. Here only a small part of mining equipment are referred to. I f you like this article. Please kindly wait for me renewing contents. The mechanical device of ship loader consists of various parts. During the mechanical transmission, some parts would produce the friction in the contact surface, which results in the damage of the parts and influencing the accuracy and service life of the equipment. It is estimated that 80% of parts are damaged resulting from frictional wear.
In order to reduce friction wear and prolong the service life, the lubricating oil is adopted in the key points of ship loader. The functions of lubricating oil are as follows: 1. reduce the friction: The lubricating oil is added on the friction surface, which reduces the friction coefficient and energy consumption. 2. anti-attrition: The lubricating oil could reduce abrasive wear, surface fatigue wear and adhesive wear. 3. cooling: The lubricating oil could absorb heat and transfer heat, which could reduce the temperature of frictional heat. 4. antirust action: If the lubricating oil lies on the friction surface, the lubricating oil could prevent air, water drop, water vapor, active air, liquid and dust from parts rusting. 5. transfer power: In most conditions, the lubricating oil could transfer the power, such as hydraulic transmission. 6. sealing function: The lubricating oil could form sealing on the surface of the part, avoiding the intrusion of water. 7. cushioning effect: After being battered, the lubricating oil could absorb the impact energy, such as automobile absorber. 8. cleaning: The circulation of the lubricating oil could take away the impurity. The automated warehouse is widely used in many fields at present. In general, the automated warehouse has some relationships with the conveying system such as pipe conveyor and conveyor components. The advantages of automated warehouse are as follows.
This could reduce the cost of labor. As the people bonus disappear, the cost of labor is in the rising trend. In order to promote the informational level, the logistics must link up with the automated production. When the complication of production and logistics reaches to some degree, the labor could not meet the requirements. However, the automated warehouse is the best choice for this situation. he automated warehouse could reduce the godown rent fee and take good advantage of the warehouse space. The tray could be the tool of packaging and storing, which make the integration of inventory and production process. Setting up the automated warehouse is the best choice, the reasons are as follows: The informatization and automation is the development tendency of modern logistics. The logistic has a bright future with less technical obstacle and continuous input. The logistics in the future will use the automated warehouse as the main operation system. Belt conveyor is widely used in the material handling system especially with stacker Reclaimer. There are two types of model selection of belt conveyor. In the first condition, belt conveyor is used along with specific complete equipment. In this case, the possibility of use in the specific condition should be considered. In the other condition, belt conveyor is used as the general equipment. Then the components of belt conveyor should be selected through calculation in order to make sure the belt conveyor can be used in different condition.
There are two phases when designing the belt conveyor. Preliminary belt conveyor design and detail design. In preliminary design, the following input should be supplied. 1.Length of belt conveyor. 2.Installation inclination of belt conveyor. 3.Design capacity. 4.Density of material. The following calculation can be done during preliminary design. 1.Calculation of capacity and belt width of belt conveyor. 2.Calculation of running resistance and belt tension. 3.Calculation of perpendicularity and strength. 4.Calculation of traction and drive power. The advantage of belt conveyor is large capacity and less running resistance. The power consumption of belt conveyor is around 1/3-1/5 of the scraper conveyor. Material is moving along with belt so that less crumbliness can be achieved. Because of the simple structure and manpower saving, belt conveyor and pipe conveyor is widely used in Chinese industries as well as the international. The bucket wheel stacker reclaimer is a high efficient equipment for the continuous loading and unloading of large bulk materials in modern industry. Now the bucket wheel stacker reclaimer has been widely used in ports, docks, metallurgy, cement, coal, steel plants, coking plants, coal storage plants, power plants, coal and other fields for handling bulk materials. The bucket wheel stacker reclaimer use the bucket wheel to relaiming materials continuously and use the belt conveyor installed to convey materials. The bucket wheel stacker reclaimer is a kind of loading and unloading machinery which could travel on the rail.
The bucket wheel stacker reclaimer is a special machinery in bulk material storage yard. It is developed on the basis of bucket wheel excavator. The bucket wheel stacker reclaimer could coordinate with ship unloader, belt conveyor, apron feeder, ship loader to form the materials handling system in storage yard. The operation of bucket wheel stacker reclaimer has a strong regularity and automation. There are manual, semi-automatic and automatic control methods. Bucket wheel stacker reclaimer has boom type and bridge type according to the structure. Some equipment only has reclaiming function. |