The perfect balance of powerful, low installation cost and easy movable asphalt mixing plants was developed by Alltech Research & Design team. Alltech plants are skid-mounted so it saves RCC foundation work cost.
Each new technology proudly presented by Alltech is a value for the world in the name of Energy-saving & the environment. In addition to our efficient products in asphalt technology, short reaction times, excellent development competence & state-of-the-art production facilities characterize our company.
At an asphalt mixing plant, the aggregate material is stockpiled according to grain size and type. This material is usually loaded into the individual hoppers by a wheel loader. The minerals are dispensed via dosing belts (normally frequency-controlled) onto the collecting belt below, specific to the recipe. In this way, a corresponding cold feed recipe is generated on the collecting belt. The material is then transported to the dryer drum via this collecting belt.
Yifan Crusher has a unit to get your business goals done effectively, efficiently, and reliably. No matter what the industry or the application, Yifan offers assistance to help you choose and maintain the best size and type of plant for your business goals.
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Sand casting is a mold based net shape manufacturing process in which metal parts are molded by pouring molten metal into a cavity. The mold cavity is created by withdrawing a pattern from sand that has been packed around it. With sand casting process,Fly foundry could make sand castings with materials of Steel, iron, Aluminum.
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Mar 15, 2016 · As well known, there are several modalities to obtain excellent castings, no matter whether made of cast iron, steel, or aluminium. Among the most diffused methods, it is possible to list processes of sand/resin, green, die-and lost-wax casting, as well as fully different processes like pressure die-casting.
Make your own rock Investigating how loose sediment may be stuck together to form a ‘rock’ Ask a pupil to take a handful of sand and see if it is possible to make a ‘rock’ by squeezing it as hard as possible. (it isn’t!) To become hard rocks, most sediments need to be cemented together. This idea can be tested with a variety of ...
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Historically, iron was produced by the hot-blast method, or later, the anthracite furnace. Either way, the fundamental activity in iron making involved a worker stirring small batches of pig iron and cinder until the iron separated from the slag.
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Jan 14, 2020 · Ironmaking, the first step in making steel, involves the raw inputs of iron ore, coke, and lime being melted in a blast furnace. The resulting molten iron—also referred to as hot metal—still contains 4-4.5% carbon and other impurities that make it brittle.
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Many types of crushed stone: Crushed stone is not a "standardized commodity." It is made by mining one of several types of rock such as limestone, granite, trap rock, scoria, basalt, dolomite, or sandstone; crushing the rock; and then screening the crushed rock to sizes that are suitable for the intended end use.
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Natural sources of iron and manganese are more common in deeper wells where the water has been in contact with rock for a longer time. In coal mining regions of the state, these metals may also occur from both deep and surface mining activities.
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Cast irons include many metals having a wide variety of properties. Although cast iron is often considered a simple metal to produce and to specify, the metallurgy of cast iron is more complex ...
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Making iron  Conversion to steeThe basic raw material for steel manufacture is either the hot metal from the blast furnace, steel scrap or a mixture of both.The proportions of material used vary according to the process and the type of steel required.
The burner used for drying and heating can be operated with Diesel/LDO (Light Diesel Oil/FO (Furnace Oil). During operation, the operator can change the combustible with the help of his controls. Alltech is the only proved manufacturer of asphalt mixing plants developing and manufacturing its own specified burners for less trouble. Here you can learn more about our combustion technology.
The flue gas produced in the dryer drum and other exhaust air from the production process are extracted under vacuum and cleaned in the fabric filter. The flue gas is fed to the pre-separator of the filter together with the water vapour. The coarse particles of exhaust gas are separated in this pre-separator via deflection and by slowing down the flow speed. This coarse filler is fed directly back into the mixing process via screw conveyor. The fine fraction of exhaust gas, known as fine filler, is cleaned in the actual filter housing. The filter cloth gradually becomes clogged with dust particles, so it is periodically deducted by a scavenging air fan. The fine filler generated is collected In the dust collecting trough beneath the filter housing and forwarded via a screw conveyor installed in the trough and subsequently deposited in the reclaimed filler silo.
The actual mixing process takes place in the screening and mixing tower. The materials described in the upstream process arrive at the mixing tower screen via a hot stone elevator. The hot aggregate material is uniformly supplied to the screen’s screening decks. The screen is activated via two unbalance motors, stimulating the screen unit, and thus the screens, to vibrate vertically. The input material is thus divided into the individual fractions and separated according to grain size, stocked in the respective compartments of the hot bin section below.
The mixing and weighing section is one of the core elements of an asphalt mixing plant. This is where the actual mixing process takes place. From the hot bin section the hot material, stocked according to grain size, is dispensed into the aggregate weigh hopper below corresponding to the mixing recipe. The aggregate weigh hopper is mounted on load cells to facilitate the weighing. The individual fractions are weighed sequentially, i.e. the discharge doors open consecutively and dispense the preset quantity of the respective grain into the aggregate weigh hopper. The weighing of the bitumen and the filler is carried out in parallel to the weighing of the aggregate material in the aggregate weigh hopper. The bitumen is weighed in the bitumen weigh hopper and dispensed into the mixer. The required filler is weighed in the filler weigh hopper, which is mounted on load cells, and delivered into the mixer via an inlet screw conveyor.
Both the filler reclaimed from the plant and the imported filler are stored in a filler silo. Only the reclaimed filler is necessary for the basic function of an asphalt mixing plant. There is also the option of storing and using imported filler (foreign filler). The filler then arrives at the mixing tower for further processing via a filler elevator and a screw conveyor.
The bitumen binder is a core component of the asphalt. The different types of bitumen, tailored to its relevant intended use, are stored separately in appropriate thermally-insulated bitumen tanks. These are heated in order to maintain the required temperature of the bitumen, approx. 160 – 180 °C. These days’ bitumen tanks are heated almost exclusively via electricity, with a feasible alternative being tanks also heated by thermal oil. This means that the energy from the hot thermal oil is transferred to the bitumen via heat exchangers. The hot bitumen is removed from the tanks via a pump and conducted to the bitumen weigh hopper via heated and insulated pipelines. The tanks are filled by tanker lorry via a fill pump, through pipelines into the respective tank.
A command cabin for operating personnel is available to control the processes of an asphalt mixing plant. The operating menu for the entire mixing plant is installed in this cabin. From here, all drives can be started in manual mode. Here, all data required for the mixing process is collated and displayed. As well as managing the required recipes and monitoring or implementing the mixing process, operating personnel can also control.