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Lime Kiln/Rotate Kiln/Clinker Kiln Advantage&Application:

Lime Kiln/Rotate Kiln/Clinker Kiln is ideal high standard cement calcination cement factory equipment. Kefan provide you a series of different shape kiln furnace include mesh belt kiln,rotate kiln, channel kiln, shuttle kiln, push board kiln, etc; has features of simple structure, stable working, wearable, high efficiency. If you are looking for reliable working lime kiln or rotate kiln or clinker kiln, please don't hesitation to contace us!

The Relationship Between Cement Rotary Kiln And Cement Production Line:

Cement production line(cement production factory) is combined with a series of cement equipments. The production line main contain crusher, raw material prehomogenizing, homogenizing, preheat decomposition, cement clinker calcination and cement powder package processing.
Cement equipment main machines: cement equipments include cement rotary kiln, cement rotary kiln cyclone preheater, grate cooler, etc.

Rotary Kiln Heat Consumption Reasons Analysis:

Active lime rotary kiln calcination process with bad environment, if the temperature overheat, rotary kiln woking will suffering unstable hot impact, frequently temperature change lead to thermal fatigue, these are kiln liner hot damage reasons, the followings are kefan analysis rotary kiln hot damage reasongs:
1. Overheat:
Rotary kiln inner heat load too high, heat load exceed higher than soften temperature. Kiln surface can't form. Refractory brick will lost kiln surface protection for a long time, brick eutectic impurities will melt under high temperature, cold front layer migration direction will penetrate dense layer, leave heat surface loose porous. Loose porous heat coat without brush, collision and impact and heat fatigue, easy to damage.
2. Heat impact:
Kiln unstable surface and unnormal kiln operation, especially refractory brick will easy suffering heat impact and damage. Kiln surface suddenly collapse, lead to refractory brick surface temperature instant soar, even nearly 1000degree, frequently start and stop kiln will produce thermal stress among bricks. Once exceed brick structure strength, weakness structure parts expending deepen, then crushed the brick. With kiln surface disappear, make the brick sustained damage.
3. Heat fatigue:
Reduce rotating merger rotary kiln liner surface temperature material layer, expose flame temperature. For example rotary working speed 2r/min, this periodic temperature lift to 90000 times every month. Each elevator temperature range is 150-200 degree. Through many time brick surface heat fatigue phenomenon, combine with other damage factors, make the refractory brick spalling damage.

Rotary Kiln Combustion Device Introduction:

Combustion device: 1.When using coal powder as rotary kiln fuel, according to rotary kiln different model match two channels, three channels or four channel different coal injection burning device, has features of burning full, lively and vigorous flame, good  stiffness, won't damage kiln surface, easy maintenance, low maintenance charge, key parts adopts anti-temperature ceramic parts, reliable working, low cost,etc; 2.Coalgas combustion system combined by gas burning port, control valves spare parts; 3. Combustion system has other reliable&safety measures, such as automatic blow and swept, emergency shut-off etc.

How To Choose Rotary Kiln Refratory Materials?

Refractory materials are used in linings for furnaces, kilns, incinerators and reactors.
General refractory brick material is aluminosilicate clay, thus, when rotary kiln working, the main compounds are silica&alumina inner the kiln. Certainly, siliceous bricks can bear rotary kiln highest temperature parts. However, in order to avoid chemical erosion, you need a special refractory brick to calcine dolomite, magnesite, chromite and so on.

What's The Difference Between Vertical Shaft Kiln & Rotary Kiln?

Rotary kiln is a round shape cylinder with refratory material liner, working with low rotary speed, used for calcination cement clinker equipments. It has a certain inclined degree, installed on many pair of supporting legs, driven by motor or hydraulic pressure, making the cylinder rotating at a certain speed scope. Raw material feeding from top port(kiln tail) to bottom port(kiln head). Fuel blowing to the kiln from bottom port, produce flame, calcination the raw material to clinker. Gas exhaust from kiln tail. Rotary is the main equipment in cement industrial. Cement industrial has different production method and different type rotary kiln, according to raw material making methods, it can be divided to dry type production and wet type production. 1. Wet type rotary kiln: using wet method produce cement, feeding water into the raw material making it become humidity 32-40% slurry. As preparing a slurry having fluidity, so, it's better for raw material mixing uniformly, has advantage of outlet calcination clinker with high quality. 2. Dry type rotary kiln: crush the raw material to dry powder, with generally less than 1% humidity, so, compare with wet type rotary kiln, no need heat valuable to evaporation steam. But fluidity is worse than slurry, so, with bad raw material mixing & inhomogeneity.
Cement vertical shaft kiln has two types: general vertical shaft kiln and mechanical vertical shaft kiln. General vertical shaft kiln working process: manual feeding material and manual discharging products or mechanical feeding material and manual discharging products. Mechanical vertical shaft kiln is continous working, it's quality and working efficiency is better than general vertical shaft kiln. According to construction technology requirements. Small cement production factory using mechanical vertical shaft kiln, replace general vertical shaft kiln progressively. We have already researched new generation vertical shaft kiln, completely control by computer, LED shown each property index and convenient to operate. Compared with organic shaft kiln, energy-saving, high efficiency, low cost. Now the capacity can reach about 45t/d, but the organic vertical capacity is about 20t/d by the same heat valuable. Outlet products can be tabular corundum, mullite, spinel, calcium aluminate cement, etc.

Rotary Kiln Play The Following Roles During Production Process:

Rotary Kiln Play The Following Roles During Production Process:
1. Rotary kiln is an inclined rotary cylinder( inclined degree 3-5%), raw material moving from high port(kiln tail) to low port(kiln head), so, it's a transport equipment.
2. Rotary kiln is a combustion equipment.
3. Rotary kiln has heat exchange function.
4. Rotary kiln has chemical reaction function.
5. Rotary kiln also has degradable waste utilization function.
Details please checking our website for info!

Application of Energy-saving Ball Mill(Henan kefan mining machinery Co.,Ltd.)

Energy-saving ball mill widely used in ore benefication industrial, construction and chemical industrials, divided into dry type and wet type grinding type. According to different discharging type, there are two type: grid ball mill and overflow ball mill.
Visit website for much more informations please!
http://ballmill-kf.com/product/energy-saving-ball-mill.html

How To Daily Maintenance Dry Type Energy-saving Ball Mill:

Energy-saving ball mill is the key equipment for second crushing. It has dry type and wet type. Nowadays, dry type energy-saving widely used in production line and it's daily maintenance is a regular task, as the maintenance directly effect on ball mill working efficiency and using life.
Besides, to find out the problems, avoid hidden danger happens, make sure ball mill normal high speed working, in addition to daily maintenance, we should also stop working regularly. Such as important spare parts details checking like main bearings, working cylinder, reducer per month. According to defect condition, order of priority, then make maintenance plan appropriate.
Then, how to daily maintenance dry type energy-saving ball mill, the followings are the detail analysis:
1. After ball mill continue working for one month, release out all the lubricating oil, carry out thorough cleaning, replace much more oil. Then combine middle repair, add some oil for amost six months.
2. Checking each lubrication points lubrication condition and oil level at least per 4 hours.
3. When ball mill normal working, main bearings lubrication temperature up scope should less than 55 degree.
4. Ball mill normal operation, transmission bearings and reducer temperature up range should less than 55 degree, the max scope is 60degree.
5. Large and small gear should make sure stable transmission, no noise, make gap adjustment when necessary.