Cement cooler working tips:

Cement cooler description:
Cement cooler material flow from bottom feeding to top discharging to make sure thatmaterial can be fully cooled. Water naturally flows along the shell to realize the material countercurrent flow, keeping high heat exchange rate. Using material spiral lifter to increase the cooling time.

How to choice cement cooler refractory material?
In order to reduce heat consumption, thinning refractory brick liner, decrease material and energy consumption. Cement clinker cooler refractory material should have features of low heat transmission rate, good insulation properties insulation tiles as insulation layer refractory materials:
1. Cement cooler inner refractory brick adopt two layer structure: inner layer is working area, outside layer is heat insulation layer;
2. Material and high temperature air contact working area should adopt clay hard refractory brick.

Cement cooler refractory material choice requirements:
1. High normal temperature anti-pressure strength, can resist longlife working abrasion;
2. Good structure strength and improve anti-corrosion ability from a certain degree;
3. Low heavy firing line change rate, can avoid refractory brick under high temperature condition working process damage because of valume inflate and shrink;
4. Good anti-vibration, can meet cement clinker inner thermal shock, working temperature fast change working features;
5. High refractoriness, good fire resistance;
6. Clay brick with high production capacity, widely usage, good working property and low cost, can completely meet cement cooler working requirements.

Vertical grinding mill working tips:

Vertical grinding mill working principle:
a. Jaw crusher crush raw material to vertical grinding mill required size.
b. The crushed materials are conveyed into a silo, which the material is transported through the electro-magnetic vibrating feeder evenly and continuously into the grinding chamber. The rollers oscillate outward to press the ring because of the centrifugal force and the shovel scoops up the materials, send to the middle between ring and roller to accomplish the grind.
c. After that, the outlet material are carried by the air from the blower into the powder collector(analysis machine) for screening. The fine powers are blow into the cyclone powder collector and are discharge through the discharge opening valve, and the corase materialsafter the screening will be returned back to the vertical grinding mill grinding chamber for regrinding. The airflow system is closely sealed up and circulated under negative and positive pressure condition.

Vertical grinding mill installation tips:
1. Before vertical grinding mill installation, you should take care of the grinding plant and smear rust-proof oil and grease on the vertical grinder surface in order to avoid sun and rain and prevent rust and water of the body. So, you'd better to establish maintenance regime.
2. Choose proper height and installation location according to the foundation drawing. The grinding mill base should adopt mixing concrete. Before being casted the base shall be buried steel. After casted, the base should have 15 days of warranty period.
3. Vertical grinding mill should be equipped with 2 to 3 tons of lifting tools used for installation and maintenance.
4. When the using time is more than 6 months, you should clean and check the transmission device, grinding device, analyzer, and oil pool and so on. Afterchecked, you should add enough grease.

Wood powder machine features, raw materials and start working process:

Wood Powder Machine Features:
High working speed: the machine working with high speed at least 2900r/min.
Reasonable crushing principle: the machine adopts high-speed impact, sharp cutting, interval grinding and flowing grinding to get fine crushing effect.
Advanced design: low investment, low energy consumption and noise; it can also improve the production efficiency and working stable.
Adjustable fineness: the fineness can be adjusted between 20 meshes and 325meshes.
Reasonable and compact structure: the whole equipment is consisted of main host, blower, powder collector and dust collector, etc. It is safe and convenient to operate.
The wood grinder can grind material into powders or granule, fibrous material of different fine degrees(from10-525meshes)the rate reaching100% without slag.

Wood powder machine raw materials:
The machine mainly deal with solid matter in 3 level hardness, such as soft mineral, brittle material, tough materials, fiber material and some material easy to condense into block.
Suitable for: miscellaneous wood powder, bamboo powder, cork powder, polyvinyl chloride (PVC plastic)the tooth material, dyestuff, leather, mica, refined cotton, seawater product, spices, feed, rice shell, peanut shells, nut shell, cavings, pesticides, charcoal, hard foam, fine tires line etc.

Wood powder machine start working process:
1. Before start working, you should strictly check whether wood powder making machine each part installation can meet requirements or not, metal material is forbidden fall into the machine, push belt to testing the machine by hand, check whether there are vibration or not.
2. Start sequence: first start blower, then main host; stop working you should first stop main host then blower;
3. Keeping even feeding, feeding size according raw material hardness, hard material diameter should low than 3cm, forbidden metal block feeding into discharge opening.
4. During wood powder making machine working process, blower shouldn't overload, keeping normal working.
5. You should often check blade, grinding board abrasion degree, once there are serious abrasion on the blade, you should replace them in time.

New type raymond grinding mill energy saving and exhaust reduction:

New type raymond grinding mill widely used in mineral, construction material, chemical, metallurgy and other industrial, under final products the same size condition, it's powder production capacity is higher than other series, wearing parts high utilization rate. Under the same raw material and the same size final products condition, wearing parts using life is longer than other mining machinery, high working efficiency and eco-friendly, embodies the concept of raymond grinding mill research and eco-friendly combine.
When new type raymond grinding mill crushing materials, grinder roll tightly rolls on the grinding ring under the action of centrifugal force, thus, when the grinder roll and grinding ring are worn to a certain thickness, it doesn't effect production capacity and fineness of finished products. Grinder roll and grinding ring of raymond mill have long replacement cycle, avoid the disadvantage of ultrafine centrifugal mill wearing prats short replacement cycle.
After improved at the basis of traditional raymond mill design concept, kefan new type raymond grinding mill has reached national environmental protection standard. It's essential to intensify the efforts on energy saving and environmental protection. Under the same materials, service life of raymond grinder is longer that other mining machinery equipment. Kefan vertical grinding mill  has features of long service life, safety and reliable working, high efficiency, clean and environmental protection and so on.

How to tesing lime rotary kiln and choice blower?

Lime rotary kiln airflow supply and blower choice:
No matter mixing burning rotary kiln or gas burning rotary kiln need a certain reliable airflow supply, as any fuel burning should have the following three terms: fuel, air(oxigen) and fire, without any of the term won't be burned. Airflow capacity should calculate according to fuel combustible components oxigen require amount, without enough airflow then without completely burning. So, during blower select, you should calculate at the base of theory also you should according specific furnace and actual experience to select blower, thus, you can get the best effect.
Lime rotary kiln installation testing
1. Rotary kiln should be installed in horizontal concrete foundation, fixed by anchor bolts.
2. The rotary kiln installation should pay attention to the main body should vertical to horizontal direction.
3. After lime rotary kiln installed, checking whether each parts bolts looseness and host door is fastened or not, if not, please fasten.
4. According to the power requirements to configurate the power line and control switch.
5. After inspection, rotary kiln should carry out testing without material load, after normal testing, then it can carry out normal production.

Lime rotary kiln application, structure and auxiliary equipments:

Lime rotary kiln application:
Lime rotary kiln features: simple structure, convenient and reliable control of the production process, less wearing parts, high rates of operation, its not only used to calcine high-grade cement in cement plant, but also widely used in metallurgical, chemical, construction and other industries. Lime rotary kiln produced by our plant has strong structure, stable operation, high-quality products from the kiln and so on advantages, we can also offer advanced efficient shaft preheater, five grade cyclone preheater.
Lime rotary kiln basic structure and main auxiliary equipments:
Lime rotary kiln main composed by rotary kiln cylinder, feeding device, material spreading device, burning device, discharging device, electrical instrumentation control device, dust collecting device and other auxiliary equipments. Different lime kiln with different structure and calcination type, the same working process but big equipment valuable difference. Generally using spare parts: feeding system, material spreading device, air supply device, burning and dust discharging device and so on.

Dedicated Cement Equipment---Cement Preheater

Rotary kiln tail cement preheater using hot smoke preheating preheater inner limestone to around 800 degree then preheated limestone pushed into rotary kiln by hydraulic pusher to calcine.
Cement preheater is a part of finish preheating raw material and replace rotary kiln function, thus, reduce cement kiln length, at the same time, it can change accumulate inner cement rotary kiln preheater materials suspension condition, making raw material completely mixed with outlet kiln exhaust hot air contact area increased, so, high efficiency hot air transmission speed and hot air exchange, lead to cement rotary kiln system production efficiency improved and achieve the goal of decrease low heat value consumption clinker calcination.
In the whole cement factory, preheater can be classified into several preheating chamber, according to different output temperature, each preheating chamber match a set automatic control system hydraulic pushing device, the system can improve relative data PLC control platform, to realize central control chamber centralized control.
Henan kefan machinery is a professional mining machinery manufacturer, has been engaged in rotary kiln exceed 25 years, has rich experience and advanced technology at preheater production, energy saving rotary kiln and preheating effective combine can save energy notable, decrease consumption, improve clients economical profit.

How many advantages of new type raymond grinding mill?

New type raymond grinding mill is kefan machinery introduce from foreign raymond mill industrial new production technical combine with kefan machinery specialist and technician many years raymond mill produce process experience, set all the company people wisdom many years develop and research new generation raymond grinding mill equipment, the vertical grinding mill continue match high pressure spiral, continuation of our company serious of high pressure grinding mill all advantages.
New type raymond grinding mill ancillary equipment can improve powder separator fineness high density separator impeller. Practice shows, under constant speed condition, improve blade density can improve final products fineness, in other words, under final product fineness no need exchange condition, high density impeller has low speed compared with low density impeller, reduced airflow resistance, working with the same power, final products capacity improved more than 50% at the bas of 95type grinding mill; New type raymond grinding mill with bigger production capacity, much more suitable for big scale powder grinding mill project needs; new type raymond grinding mill adopt distribution cabinet match the most advanced electric element, has much more stable property.

Active Lime Rotary Kiln Production Line:

Kefan active lime rotary kiln production line clients' working site:

Active lime is metallurgy, chemical, papermaking and other eco-friendly raw materials. Till now, there are two methods lime making: one is vertical kiln technical, another one is rotary kiln technical. Vertical kiln method lime production with low capacity, demanding fuel, pollute environment. Rotary kiln lime system with kiln tail preheater and vertical cooler features: low energy consumption, high production capacity, suitable for different kinds of fuel, eco-friendly. Disadvantages: 1. Uneven limestone distribution in preheater, uneven heat transmission, low heat efficiency; 2. Low precalcining rate; 3. Vibration vertical cooler adopt many vibrating discharge device discharging at the same time. Effected by different vibrating frequency, it's difficult to realize unifrom discharging, at the same time, under the function of vibration force, block lime is easy to crush, decrease block rate. Besides, the more capacity required of production line, the bigger of the feeding chamber, the more technical difficult of the relative supporting structure and then effect big industrial production development. To deal with the status, kefan research new type active lime rotary kiln system technical. Has the following features: 1. Big production capacity, same quality preheating chamber, new type active lime system technical production line higher 25% production capacity; 2. Rotary kiln tail preheater heat excharge field heat force uniform distribution, high temperature waste gas and limestone heat exchange completely, high waste heat recovery rate, outlet system waste gas temperature low than 240 degree; 3. Higher 5-10% calcium carbonate decomposition rate in the rotary kiln than general production line; 4. Low investment, lower 20-30% than the same industrial.

High pressure suspension mill operation and maintain principle:

High pressure suspension mill outlet products size can be adjusted from 80 mesh to 425 mesh, many products size can be 1500mesh, it's bentonite industrial and limestone powder best choice.

High pressure suspension mill distribution cabinet operation and maintain should be reasonable by special person, checking the distribution cabinet per certain time, keeping meter shown clear, operation hand working flexible, contactor and other part without dust. You should often check whether each spare part contact loose, damage or not. Mearsurement insulation resistance per half a year, you should treatment failure in time.

Maybe, crusher, high pressure suspension grinder, pulverizer same point is can be used in mine, metallurgy, construction material and other industrial. The different point is pulverizer is often used to crush chinese herbal medicine, plastic, paper, fiber and so on.

When clients purchase high pressure suspension grinding mill, you should pay attention to the outlet products size, kefan can help you select the best suitable for you using grinding machine according to your products size requirement. Many more informations, welcome your consulting.

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.