Jaw Crusher
Great energy conservation, wide adjustment range, low noise and little dust
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Email us[email protected]
Address usZhengzhou,China
Email us[email protected]
Address usZhengzhou,China
In an Indurating Furnace the pellets are loaded on to a travelling grate to a depth of approximately 3060cm where they are preheated typically to 800 9000C before entering a higher temperature stage around 120013500C which in some designs is a continuation of the travelling grate and in others take the form of a rotary kiln
Great energy conservation, wide adjustment range, low noise and little dust
1.5 times or even 2 times larger crushing cavity than that of other crushers, large feeding mouth
With features of reliable structure, high working efficiency and easy adjustment
VSI sand maker, also called VSI crusher, is the major machine for sand making plant.
Ball mill is the key machine to grind the crushed materials. Ball mill machine is widely used to process cement, silicate product, building material, refractory material, fertilizer, ceramics and glass, etc.
On the basis of domestic mills, fote raymond mill is produced. The raymond roller mill enjoys the features of high working efficiency, low energy consumption, small floor space and small cost.
Balls a rotary kiln for indurating preheated pellets and an annular cooler for cooling the fired pellets in t able 151 mour o et al compared the raw material requirements
Rotary kiln iron ore pellet process rotary kilns gratekiln iron ore pelletizing system provides process flexibility features there are two main processes for producing iron ore pellets the gratekiln system and the straight grate system in the straight grate system a continuous parade of grate cars moves at the same speed though the drying induration and cooling
Iron ore pellets induration solutions metal 7 iron ore pellets induration solutions two indurating furnace technologies dominate the pelletizing industry the straight travelling grate and the graterotary kiln technologies therefore plant operation and maintenance department managers pay close attention to energy consumption
Iron ore pelletizing grate kiln system brochure metso goodrich offers iron ore pelletisation plants from a reputed manufacturer in china based on the grate kiln technology the plants are available in capacities from a chain grate system is used for drying amp pre tons per annum the chinese company has already supplied pellet plants in india in the grate kiln process tons to
China kiln rotary kiln find details about china pellet equipment kiln from kiln rotary kiln jiangsu hongda special steel machinery plant co ltd
3 process pellet plant produces pellets using iron ore and additives such as limestone bentonite coke anthracite coal quartzite which are passed through balling discdrum and the green pellets so formed are passed through a furnace either straight grate or rotary kiln to produce high grade pellet which are used in steel
Pelletizing is the process of compressing or molding a material into the shape of a pellet processed taconite pellets as used in the steelmaking industry with a us the raw material is rolled into a ball then fired in a kiln to sinter the particles of drying daily pay burn burn afterburn and cooling in a cooling tower read more
Dec 03 2012 an alternative technology as described for example in us pat no 4168951 issued to drugge or as proposed by metso is to use a rotary kiln for the firing zone of the process instead of a moving grate the initial step of drying is carried out at moderate temperature to allow a gradual release of the moisture in the pellets
Rotary kiln iron ore pellet process res59beeposit formation in the gratekiln process hjalmar lundbohm aug 26 2013 cover picture information kiln in an iron ore pellet production plant the gratekiln process is a challenge for the iron ore pellet productio
14 indurating process the firing of pellets establishes the binding of a simple structure for drying preheating firing and cooling pellets due to its relative ease of operation gratekilncooler process enables all pellets to be uniformly and adequately heathardened by
The gratekiln process has been widely applied for oxide pellet production with the quick development of steel industry in china but ring formation takes place which adversely affects the productivity and properties of fired pellets rotary kiln at high temperature seems a black box and ring formation is difficult to measure directly by
Pelletization process the rotary kiln provides constant mixing of the pellets bringing all the pellets to the same temperature in a straight grate the pellets at the top of the bed are over cooked and those at the bottom are under cooked higher quality means fewer fines better reducibility and
Pellets are dried and partially indurated through multiple cross flow process zones updraft drying downdraft drying tempered preheat and preheat strengthening pellets for processing in rotary kilnaverage bed depth 180 mm no hearth layer required as in straight grate rotary kilnfinal point of pellet induration in grate kiln system
The process principles are the basis for numerous rotary kiln plants and still represent the dominant technology for the direct reduction of lump ore or pellets using coal operates with the widest range of ironbearing materials such as pellets lump ore beach sand
Xh fan y wang and xl chen mathematical models and expert system for gratekiln process of iron ore oxide pellet production part ii rotary kiln process control j cent south univ 19 6 2012 17241727 crossref google scholar
Iron ore pellets play an important role in the raw materials for ironmaking 2 in china the graterotary kiln process is widely adopted to produce iron ore pellets 3 however deposits are
May 01 1987 the rotary kiln the rk is arranged to be fed with sized grainsize adjusted partially dried ore with a reducing agent mixed therein anthracite which had been used as the reducing agent until 1980 was replaced by bituminous coal because of the former being hard to obtain and a
Grate kiln systems metsoprocess overview grate kiln systems consist of three major pieces of equipment the grate the kiln and the cooler the object of the p
Whether using the straight grate process or adding a rotary kiln to make the gratekiln process our products are key to the process to dry and heat the ore pellets a number of fans are used to recycle heat from the kiln after indurating in the kiln cooling fans are used to cool the pellets for handling downstream and fans are used to
Process for indurating dried pellets in a rotary the travelling grate and in others take the form of a rotary kiln once hardened the pellets are cooled ready for use in a modern indurating furnace there are 6 to 7 processing zones updraft drying udd down draft drying ddd preheating ramp firing afterfiring cooling
In the rotary kiln fuel and air are added to cause a reduction of the pellets as they slowly advance by rotation from the first end 15 to the second end 17 of the inclined rotary kiln the hot pellets of reduced material are then transferred to a rotary cooler to reduce the temperature thereof
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At 800 deg c the feo of the magnetite iron ore gets converted into fe2o3 in an exothermic reaction the liberated heat hardens the green balls which is helpful to withstand the tumbling impact due to the rotation of the rotary kiln a circular cooler is used for cooling of the fired pellets flowsheet of grate kiln process is given at fig 3
However the gratekiln system consists of three separate process units connected in series a traveling grate for drying and preheating green balls a rotary kiln for indurating preheated pellets
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Grate kiln systems typically consist of the grate section the kiln section and the cooler section the three combined sections allow for the drying preheating indurating and cooling of pellets features these plants typically produce pellets of a more consistent quality at a
The thermal part of the process where iron ore is sintered to pellets requires very high temperatures and has to be carried out in special kilns one of the equipment options is a combination of a straight grate and a rotary kiln where the pellets are heated dried and oxidized by extremely preheated air and the combustion of coal
During the working process the rotary wood drying machine has little dust and noise furthermore the hot air furnace with the special design can supply the clean hot air for the rotary dryer if you want to make biomass pellets the moisture content of biomass materials is a key part which has an effect on pellets directly when the
Process for indurating dried pellets in a rotary kiln building materials equipment mainly includes cement production equipment activated lime production equipment etc standardized production processes to ensure the smooth operation of equipment and
In the kiln pellets are brought up to final indurating temps rotation of kiln exposes entire pellet bed to heat radiating from the burner resulting in uniform pellet quality the kiln burner utilizes cooler off gas to heat material bed to nominal of 12001340 c completing the slag bonding and mineral bridging to form pellets