Which reasons lead to vertical grinding mill gearings damage?

During vertical grinding mill(raymond mill) working process, we'll suffering gearings damage phenomenon, as replace new gearing is a very troublesome things, so, all users intend to reduce gearings damage condition. Through large amount of experience, we summarized the following relative gearing damage reasons:
1. Vertical grinding mill installation; machinery equipment installation premary period, as many spare parts are new products, it's inevitably suffering some accidents during installation, for old install workers, it's easy to slove all the problems as they have rich experience, but for the novice it not easy to say. Raymond grinding mill gear installation is the same, when using hammer, novice can cotrol efforts and brute force straight tip gear, lead to gear deform; There are some other questions, such as gear installed at an unreasonable position and so on;
2. During vertical grinding mill working process, working without add lubricating oil for a long time or using unreasonable lubricating oil or add oil not enough and so on;
3. Pollution is the worst damage to gear when raymond grinding mill working, so you have to clean gear per certain time, increase gear sealing device property;
4. Exhausted damage is vertical grinding mill gear common damage method. Common exhausted damage reasons: gear overload working for a long time, don't maintenance in time, improper maintenance and aging equipment and so on.
Many more raymond grinding mill informations pls contace us at all times, glad to service for you!

What You Should Pay Attention On High Pressure Suspension Grinding Mill Cylinder Collusion?

1. Before high pressure suspension grinding mill cylinder collusion, you should adjust new and old cylinder, new cylinder both sides surface should through formation process and add "meter" shape support or inner the support ring to make sure collusion quality, reduce welding stress;
2. When high pressure suspension grinding mill cylinder collusion, ring gap distance should more than 300mm;
3. Before replace high pressure suspension grinding mill working cylinder, stop position should be reasonable, the position can  containment cylinder deformation and confirm deformation.

Fully Airflow Crusher Knowledges:

Airflow crusher properties advantages and features:
Airflow crusher slove general crusher high energy consumption, low production capacity disadvantages, is a new generation products, technical properties completely exceed than domestic same products. Main has the following features:
1. Crushing production capacity improved 1 times than general crusher at the same energy consumption;
2. When required output product with uniform size, yield rate improved 1 times than general crusher;
3. Airflow crusher multi-function, can be used as crusher and also can be used as crusher and classifier;
4. Big feeding material size range, the biggest feeding size 5mm;
5. Automatic control, simple operation, stable working, eco-friendly and so on.

Airflow crusher application:
Airflow crusher is widely used in chemical, mineral, grinding material, refractory materials, metallurgy, construction material, ceramic, new material and other dry powder material ultrafine crushing and granule shaping.

Lime Vertical Preheater(Lime Rotary Kiln) System Components:

1. Feeding system: main contain top silo, discharging pipe, discharging methods and structure can make sure safety sealing when feeding materials to preheater, thus, cold air outside can't flow into lime vertical preheater and realize continuous and interrupt feeding by valves help;

2. Lime vertical preheater: it's make sure material preheating to around 900 degree main parts, composed by preheating chamber, suspension device and refractory liner and so on;
3. Material injection device: main contain material injection head, frame and connecting rod parts;
4. Hydraulic system: main contain oil box, oil pump, motor, solenoid valve, hydraulic oil pipe and so on, it's main function: cotrol material injection device, finish material injection task;
5. Bottom feeding chamber: main contain chute pipe, feeding chamber, feeding chute port and so on, it's main function: lead preheated material to rotary kiln to calcine;
6. Frame: main contain column, ring beam and so on, it's main function is supporting preheater top structure.

Know Cement Cooler Advantage&Disadvantage Make It Easier For Using:

Single cylinder cement cooler is one of rotary kiln system and function important cement equipment. Making rotary kiln clinker temperature from 1000-1300degree decreased to 200degree, then improve cement clinker quality and grindability.

Single cylinder clinker cement cooler -- solid countercurrent heat exchange equipment, easy operation, reliable process, stable working, high thermal efficiency, without waste gas and dust emissions, rotary kiln cement equipment, upstream and downstream using methods. Cooled air with small volume, the disadvantages: high temperature clinker is difficult to be cooled, as cooling high temperature clinker, heat consumption is big, clinker cooling degree is effected by clinker granule, so, single cylinder clinker cooler will be replaced by grate cooler.

Single cylinder rotary kiln clinker cement cooler woorking cylinder average diameter is 2---5 meter, length is 20 --- 50meters, length and diameter proportion is 10 --- 12, incline degree is 3-4%, production capacity is 25 - 35 thousand tons per year, clinker cooler discharge opening temperature is 150 --- 300 degree, high effciency is 55 --- 70%.

How to Maintain Wood Powder Making Machine?

After wood powder making machine working a period of time, there will be some questions, it's not because of wood grinding machine quality problems, it's because the operating methods or some other reasons. According kefan many years wood grinder using experience, achieved a basic solution, hope we can do help for buy wood powder machine clients. If you still have anything not clear, you can contact us at all times, we can give you much more tips:

Wood powder making machine generally fault resolutions methods:
1. Check wood grinding machine raw material fineness. If raw material with too big size or too heavy humidity, then the raw material should be deal with by wood chopper, then outlet material put into wood powder making machine to grind. If raw material with too heavy humidity, it should dry under sunshine then be crushed.
2. If raw material with fineness size, then you should remove three adjust board.
3. Cypriot file room adjustment should match with screening machine, separating final products and semi-manufactured goods. The highest production capacity allocation: 60% final products and 40% semi-manufactured goods.
4. Feeding capacity should be uniform, otherwise, wood powder making  machine motor with overload and reduce wood powder machine using life.

Cement Rotary Kiln Application&Classification:

Cement rotary kiln is calcine cement raw material to cement clinker main equipment, cement raw material through drying, preheating, calcination, cooling and so on process and then form cement clinker.
Cement kiln now can be divided two types: one is kiln cylinder horizontal position(with incline degree) and working, it's called rotary kiln; another one is kiln cylinder is vertical condition working without rotating, it's called vertical shaft kiln.
1. Wet rotary kiln, the process: add water to raw material, making the material slurry with 32-40% humidity. As the raw material is fluidity slurry, so, each raw mterial with good mixing and uniform, so, the outlet clinker with high quality, it's wet rotary kiln production main advantages.
2. Dry rotary kiln advantage is opersite to wet rotary kiln. Dry rotary kiln is making raw mateiral into dry powder with low than 1% humidity, so reduce evaporation water needs heat value.

Rotary Kiln Equipment Relative Knowledge:

Rotary kiln can provide uniform section temperature area and also make sure material at high temperature stay enough time, at the same time, as raw material constantly flip, be heating uniform and finish above working better. Raw material in rotary kiln calcination temperature generally 1200-1300 degree. Heating ways: rotary kiln high temperature radiation heat transfer and kiln wall heat conduction heat transfer.

Our company production rotary kiln system using domestic and foreign advanced hydraulic gear wheel device, using measurement column piston pump with high measurement accuracy, precision speed adjust valve and contact graphite block sealing device. Convenient to operate, reliable using, stable heat process principle, improved rotary kiln working efficiency, compared with the same specification equipments, working efficiency improved 10%, production capacity improved 5-10%, heat consumption decreased 15%.

Cement rotary kiln application: cement rotary kiln is calcine cement clinker main equipment, widely used in cement, metallurgy, chemical industrials. It's composed by cylinder, supporting device, with gear wheel supporting device, transmission device, mobile kiln head, kiln tail sealing device, combustion device, etc. Has features of simple structure, reliable working, working process is easy to control, etc.

Whcih Tips Raymond Mill Should Pay Attention?

Raymond mill suitable for all kinds of ore powder making, coal powder making, such as raw material ore, gypsum ore and other material fine powder process. In order to make user know much more about how to using raymond grinding mill, kefan introduce you raymond grinding mill some maintain methods:
1. In order to make raymond mill normally working, you should make "raymond mill safery operation" rules to make sure raymond grinding mill safety and long life using as well as you should have necessary checking tools and grease and relative spare parts;
2. During raymond mill using process, there should be some people responsible for custody it, operator should have operation technical level.
3. After raymond grinding mill using a period of time, you should check it and replace grinding roller and grinding ring wearing parts;
4. Fineness adjustment. According to raw mateiral size, hardness, humidity, density, outlet products with different size, you can adjust top analysis machine, high speed, high fine degree, low speed, low fine degree. Improve outlet product size fine degree, raymond mill production capacity will decrease;
5. Raymond mill grinding roller and grinding ring scrap limit is min liner thickness less than 10mm;
6. After raymond mill grinding roller device working over 500hours, you should replace grinding roller, clean scrool bearings and replace wearing parts.

Airflow Crusher Structure and Classification and Features:

Airflow crusher together with cyclone separator, dust collector, blower composed a set of crushing system.

During our country industrial application, airflow crusher mainly classified into the following types: flat type airflow crusher, fluidized-bed spray type airflow crusher, circulation tube type airflow crusher, etc.

Airflow crusher features:
a. Outlet products size can be adjust from 2um to 45um, good grain shape, and uniform final products size;
b. Crushing raw material without meida under low temperature, speciall suitable to crush thermosensitive, low melting point and volatility materials;
c. Airflow crusher is easy to disassembly and clean, smooth inner wall;
d. The whole system closed crushing, less dust emission, low noise, clean and environmental during airflow crusher production process.
e. Using program control system, simple operation.

Pulverizer Fault Resolution Methods:

1. Prevent using hammer slam and damage pulverizer spare parts at output shaft;
2. Prohibited turning handwheel handle when pulverizer stop working;
3. Pulverizer motor using N32 high zinc alkaline type high level anti-friction hydraulic oil, reducer using 401 general lubricating oil, you mustn't use other type oil to replace;
4. Add oil after pulverizer using 3000hours, the second time add oil is the time after pulverizer working another 500hours, later, add some oil per pulverizer working 1000hours.

Active lime rotary kiln technical date knowledge:

According to different raw materials, rotary kiln can be classified into cement rotary kiln, metallurgy chemical kiln and lime rotary kiln.

Lime rotary kiln(active lime rotary kiln, lime kiln) main used to calcine steel factory, ferroalloy factory active lime and dolomite.

Key equipments: vertical preheater, rotary kiln, vertical cooler, combustion device, etc.

Main process: raw material conveying system, active lime calcination system, coal powder making system, final production conveying system, etc.

Complete active lime rotary kiln production equipments features:
1. Stable working, high efficiency, high production capacity, high quality products;
2. With energy-saving and eco-friendly system: using waste gas high efficiency exchange heat stepless, install sealing and dust collector at each contact, low heat consumption;
3. Active lime rotary kiln high efficiency and energy-saving;
4. High resource utilization;
5. High quality key equipments and high degree automatic.

How Could Wood Powder Machine Output Products Size Be Adjusted?

1. Outlet products size can be adjust from 30mesh to 300 mest, production capacity and fineness according to materials different density will appear some difference. Wood powder machine main motor can be replaced according material fineness and production capacity;
2. Wood powder machine installed airflow controler, the airflow capacity can be adjusted to ideal condition for continous production;
3. There is a fineness analysis machine inner wood powder machine, adjust to clients needs size, fixed bolts then production.

How To Do Cement Rotary Kiln Preheater Daily Maintenance?

During clients operating cement rotary kiln preheater, it can not afford to avoid the following daily common operating problems:
1) Raw materials with incorrect humidity, to solve this problem, the simplest method is control and adjust cement preheater properties, then add or dry relative amount of water;
2) Ring beam appear loose phenomenon. The way to solve the problem is tighten the bolts at a certain condition. But too tight will lead to accident easily.
3) Feeding filter will appear riding port piercing condition easily;
4) You should pay attention to cement preheater vibration.
There is no trivia during industrial production, working according to relevant rules and regulations, to make sure safety production and pleasant work!

Kefan Machinery Development Process:

Kefan machinery is a professional mining machinery manufactures, established in 1980, in 2008, the company was recognized by the Ministry of Commerce and obtain the right to operate independent import and export of machinery products.

Kefan machinery main products: lime rotary kiln, cement rotary kiln and relative auxiliary equipments such as vibrating feeder, ball mill, jaw crusher, impact crusher, sand maker, vibrating screen, sand washer, raymond mill, high pressure suspension mill, building material free-burning machine, belt conveyor and wood grinding machine, etc.

Equipments sold to Indonesia, Australia, Vietnam, Korea, Russia, Kazakhstan and Africa country.

If you'd like to know more about our products, please feel free to contact us for details.

High Pressure Mill Raw Materials And Advantages:

High pressure mill is short for high pressure suspension grinding mill, it is a new type machine which is used to grind stone to micro powder. Powder grinding mill can be used for processing materials such as limestone, calcite, marble and kaolin, etc.

High pressure grinding mill has the wider application than the jet mill. Compared with other similar products, this machine takes the higher pressure spiral, which can help increase the pressure and production capacity. Has advantages of energy saving, eco-friendly and higher dust collecting efficiency.

6R High Pressure Raymond Grinding Mill Brief Introduction:

6R big scale raymond grinding mill main composed by premary crusher, bucket elevator, silo, automatic feeder and secondary period raymond mill, analysis machine, blower and the final period dust collecting device.
6R big type raymond mill (raymond grinder) is suitable to the grinding and processing of more than 280 kinds of non-flammable and non-explosive materials with hardness less than 7 and humidity less than 6%.
Kefan 6R high pressure raymond mill production capacity improved 10-20% under the same power condition compare with other grinding machine. Roller grinding materials pressure improved 800-1200kg under high pressure spiral press.

Why Rotary Kiln Working Needs Preheating?

Why cement rotary kiln working needs preheating? Because in order to make sure raw material and high quality clinker uniform, so, it's necessary to do preheating operation to make raw material uniform; If raw material with non-uniform crushing or preheating, then any advantaced technical equipment has no significance to rotary kiln.

How To Choose Calcination Active Lime Material?

The basic requirement using rotary kiln calcinated active lime is choosing raw material, then according to the choose raw material limestone property to determain calcination equipment and methods, it's an important guarantee to get qualified products. According to limestone size and impurity content to chose raw material.
There are so many kinds of limestone, such as granule crystallization lime stone, dense lime stone,  porous lime stone, marl lime stone, dolomite, shell, calcareous river pebbles, etc.

Inner Rotary Kiln Each Parts Working Speed Analysis:

Inner rotary kiln material working speed change with different condition, material working speed has relative to air discharging capacity, rotary kiln speed, inner rotary kiln resistance, material liquid and material size and so on.
Calcination area and exothermic reaction area, material working speed is fastest, because this area has large amount of gas outlet, increase material layer porosity rate, make powder material flow property better. As the calcined material area exist with liquid, increased granule angle of repose, so, working speed is slow. As cooling area with collar at rotary kiln inlet port, making material density thickness bigger, then reduce material working speed.

Rational Allocation Rotary Kiln And Calciner Air Flow Capacity:

Rotary kiln and calciner air flow capacity allocation is through kiln tail necking and tertiary air duct  valve open degree to realized. Under normal production condition, you should control oxygen contain about 1%, at kiln tail oxygen contain about 3%. If kiln tail oxygen contain too high, because inner kiln air flow capacity is too big. If kiln tail oxygen contain too low, kiln head with low pressure, lead to coal burning with less temperature point, because inner kiln air flow capacity is too less, can't meet inner air flow capacity requires.

Alumina Production Process Rotary Kiln Installation Sequence:

Rotary kiln calcination equipments is a big scale heavy loading high temperature using in alumina factory, cement factory. Main contain supporting parts, cylinder parts, driving parts. Rotary kiln installation sequence: supporting wheel install(secondary grouting) --- cylinder body install --- large ring install --- pinion & motor & reducer install.