Portland cement production process details:

Portland cement clinker ore materials composed by tricalcium silicate, dicalcium, tricalcium aluminate and almandine tetra calcium.

1. Raw material crush and pre-homogenization:
a. Raw material crush:
During cement production process, most raw material needs crush, such as limestone, clay, iron ore and coal and so on.
b. Raw material pre-homogenization function:
Homogenization raw mateirals, reduce quality fluctuation to convenient produce higher quality clinker and stable calcined system; adaptable for sticky wet material; compound different kinds raw material in stack area, create favorable conditions for stable working and improve cement equipment working efficiency; high degree automation.
2. Raw material making process:
During cement production process, produce 1ton portland cement needs at least 3tons raw materials(contain each kinds raw material, fuel, clinker, gypsum, etc), according to the data, cement production line powder grinding needs energy consumption above 60% power of all the factory. Raw material need consumption 30% energy, coal powder grinding consumption 3% energy, cement powder grinding consumption 40% energy. So, to make sure high quality products and energy saving, you should choice reliable powder grinding equipment and reasonable process.
3. Raw material homogenization:
In new type dry cement production line, rotary kiln stable raw material is reliable products prerequisites.
4. Preheat decomposition:
In cement production line, raw material preheat and decomposition is finished by preheater, make raw material completely mix with high temperature hot gas in the kiln, increase gas and raw material contact area, heat transmission fast, high efficiency heat exchange, achieve improve kiln system production efficiency, decrease clinker heat consumption goal.
5. Calcination:
After raw material finished preheat and pre-decomposition in cyclone preheater, the next process is feeding into rotary kiln to calcinate.
6. Powder grinding process:
Cement equipment powder grinding process is the last process and it's also consumption most power process, it's main function is grind cement clinker to the required size.
7. Products package:
In cement production line, outlet products after calcination and powder grinding, has two type loading methods: bag package and bulk.
8. Slag utilization in cement production line:
Raw materials can be utilizated such as red mud, Gangue, flyash, stone coal and so on.

High Pressure Suspension Grinding Mill Widely Used in Cement Production Line:

High pressure suspension grinding mill more and more widely used in cement production line, in new constructed modernization cement production line, coal and raw material powder grinding mill adopt big scale grinding mill occupy majority. Besides, most cemetn clinker and slag powder grinding adopt big scale powder grinding mill. High pressure suspension grinding mill suitable to deal with soft hardness coal, meida hardness cement raw mateiral, high hardness cement clinker and slag and so on.

High pressure suspension grinding mill adopt reliable structure design, match with advanced process, focus drying, powder grinding, powder separating, elevating integration, especially during big scale powder grinding process can completely meet clients needs.

High pressure suspension grinding mill used in modernization cement production line, has a high cycle rate between powder grinding and powder separating space and high efficiency in powder grinding and separating process.

High Pressure Suspension Grinding Mill Exist Less Powder Problem:

As clinker fine crush lead to high pressure suspension grinding mill material bed can't stable working, bad working efficiency, then raw material fine powder content reduced, but how to slove the problem and improve press effect under clinker without improve condition?
It's a general problem exist in domestic cement production factory, our country high pressure suspension grinding mill manufacturer choice bad quality bearings, reducer impact property, in order to protect bearings, reducer, they have to set a stopper between roller, making roller keeping a certain distance. Thus, fine size raw material will straight through roller without press, then lead to bad working effect.
Kefan machinery produce new type high pressure suspension grinding mill adopt high quality anti-impact property bearings and reducer, so, without the above problems.
Many more informations please contact us at all time, we have high pressure suspension grinding mill working site near our factory, welcome your come inspection our factory, sincerely looking forward to cooperation with you!

Rotary Kiln Cement Equipment Structure & Classification:

Rotary Kiln Cement Equipment Structure:
Rotary kiln cement equipment composed by cylinder, gearings, care, gear wheel support device, kiln liner, kiln tail seal, kiln head and combustion device and other spare parts.

Rotary Kiln Cement Equipment Classification:
According to different heating method, it can be classified to inner heating and external heating;
Inner heating cement rotary kiln raw material and flame & gas straight contact, it can through adjust realize inner furnace oxidation or deoxidation, cylinder wall masonry firebrick, rotary kiln head and tail cover liner is high pressure wearable casting, kiln head and tail cover soft seal the cylinder, can completely eliminate dust and material leakage. It can adopt many supporting wheel to slove, making cylinder length 60meters, max. working temperature is 1600 degree. High production capacity, suitable fuel: liquid gas, natural gas, coal gas, oil, coal powder and coal and so on.
External heating cement rotary kiln raw material and flame & gas can't straight contact, heat resource is between furnace and working cylinder, through heat resistant steel cylinder to transmission heat and heating raw material, furnace liner is refractory fiber, it can save energy. Limited by heating method and cylinder material, generally, working cylinder length is less than 15 meters, heating temperature low than 1200 degree. Low production capacity, suitable fuel: electrical heat, natural gas, oil, coal and so on.

KLG Rotary Kiln Malfuction Process Methods:

KLG rotary kiln is main cement equipment, the main mulfuctions: 1. Riding wheel bearing seat cylinder abrasion; 2. Riding wheel bearing seat and cylinder appear crackle; 3. Rotary kiln tail spit ash; 4. Rotary kiln shooting; 5. Rotary kiln riding wheel bearing seat temperature rised; 6. Rotary kiln knot ring. Today, kefan lead you analysis the first two mulfunctions and process methods:

1. Riding wheel bearing seat cylinder abrasion:
During KLG rotary kiln working process, as riding wheel broken lead to bearing seat cylinder abrasion, when appeared this problem, traditional method can't do effectively repair at the site, lead to enterprise significant losses. Polymer composites with superior adhesion, excellent anti-pressure properties, so it can repair riding wheel bearing seat cylinder abrasion fast, not olny can't effect by welding heat force but also the repaired degree don't limite, avoid the possible wear again.
2. Riding wheel bearing seat and cylinder appear crackle:
KLG Rotary kiln riding wheel bearing seat cylinder or riding wheel bearing seat because unexpected cracking, the reason is that it's casting iron material, of course, traditional method can't repair. Polymer composites with superior adhesion, excellent machinery properties, high quality tolerance to water, oil and other chemical media ability.
If you are interested in our products, please consulting us at all times, glad to service for you!

Before Lime Vertical Cooling Machine Testing Inspection:

Lime vertical cooling machine is lime production line main equipment, it has function of cooling and transmission raw material and it's also the key equipment to recycle heat from active lime calcination system. After installed, you must inspection before lime vertical cooling machine testing:
1. Inner cooling machine: checking whether inner cooling machine leave uncleaned debris;
2. Casting materials and refractory bricks: checking whether casting materials and refractory brick intact or not, whether hanging tiles firm or not, whether casting materials appear covered phenomenon or not;
3. Checking whether each monitoring door strictly closed and leak out or not;
4. Discharging device: whether lime cooling machine working stable or not, whether frequency regulation reliable or not.
Inspect lime vertical cooling machine before testing is an important process of install the machine, it value for you to pay attention. Kefan machinery lime vertical cooling machine has features of simple structure, stable working, easy maintenance, etc. Strength gas-solid heat excharge making active lime cooling fast. This will not only improve the lime activity, but also improve the secondary into the kiln air temperature, recycle heat rate improved greatly.

Which Tips Users Should Pay Attention During Ceramic Grinding Mill Working?

Ceramic grinding mill main spare parts such as transmission device, grinding roller device, central shaft parts and analysis machine oil pool parts. User should clean ceramic grinding mill main parts per six month. After checking finished, user should add enough lubricating oil to each transmission spare parts. During the machine using process, kefan will give you technical guide free charge for a long time. At the same time, you should pay attention to the following tips:
1. In order to make sure ceramic grinding mill normal working, it's necessary to check lubricating oil and relative spare parts;
2. After ceramic grinding mill grinding device working a period time, user should replace grinding roller, clean each scroll bearings and replace relative damaged spare parts in time;
3. During ceramic grinding mill working process, there should be some people responsible for custody the machine and train the operator, make sure they have a certain technical level.
4. After ceramic grinding mill using a period of time, user should checking grinding roller, grinding ring, blade and other wearing spare parts.
In order to meet ceramic grinding mill user needs, the machine should have stable structure, if it should relocation frequency, there is no need foundation, just lay on hard and plat ground, if it needs installation, it's better a concrete foundation.