Cement cooler introduction and working principle:

Cement cooler introduction:
Cement clinker cooler is an important part of the kiln system and has a decisive influence on the factory production performance. Good cement clinker cooler has three key indicators characterize: maximum heat recuperation, minimum cooling air flow capacity and unlimited equipments working efficiency.
From cement cooler development history, there are several cycle changes: grate coolers were first introduced by Fuller Company (USA) at around 1930. As its advanced design, the grate cooler became the main using type in the 1950's. As planetary cooler is easy to operate, in the late 1960's, the planetary cooler gained popularity which reached its peak in the 1970's.
Precalcining technical single machine has to increas production capacity, so, grate cooler get the preferred selection again. In the mid 1980's, grate cooler renew design can not only greatly improve the technology, but also has a new position among suppliers side and the new problems has already granully to slove.
Since cement equipment have life cycles of 40 years and more, each kind cement cooler type, no matter planetary, rotary or grate cooler, will remain in operation for many more years.

Cement cooler general working principle:
Cement clinker cooler has the following tasks to fulfil: through clinker and hot air heat exchange realize process internal heat recuperation, reduce clinker temperature to convenient for clinker transport and storage, provide fastest cooling velocity to avoid unfavorable clinker phases and crystal size produce.

Why raymond roller mill can used in kaolin field?

Recently years, with kaolin develop, it is widely used in many other industrials, such as paper making, coating, plastic rubber cable, ceramic, chemical, cement, refractory material and agriculture and so on. Some high new technical industrial has already using big amount of kaolin as new material, even the high temperature resistant ceramic spare parts, also made of kaolin.

Our country has rich kaolin resource, total reserve ore 14.7 one hundred million tons. Kaolin firing process needs too many equipments, but the main equipments is raymond grinding mill, especially high pressure raymond mill, process 400mesh kaolin, general raymond grinding mill can do it, but process 1200mesh kaolin, needs ultrafine raymond mill or high pressure micro-powder mill.

Among raymond mill spare parts, main important three spare parts: pipeline, reducer and main bearing. 1. Raymond roller mill pipeline function is supporting and airflow, high requires of pipeline durable material; 2. According to ideal reduction ratio to select reducer; 3. The most important one is bearings, if using defective products will effect production efficiency.

Cement clinker cooler functions and species:

Cement clinker cooler has two main functions: recycle as much heat as possible from the hot clinker to heat up the air used for combustion, cool the clinker from 1400 degree to temperatures suitable for the subsequent process equipment, general working temperature is from 100 to 200 degree.  
There are mainly two different types cement clinker coolers in operation with the following features:  
Rotating coolers, rotary tube coolers with independent drive or planetary cooler attached to kiln shell, quasi counter-current flow realize heat exchange, cooling air determined by hot air, no waste air, heat exchange determined by condition of internal heat transfer equipment, limited single unit size, planetary cooler is not suitable for pre-calcination technology, practically no new installation built anymore.
Grate coolers, carry out heat exchange through horizontal clinker layer with cold air from grate board. Cooling airflow capacity exceed combustion air requirement airflow capacity can decrease clinker temperatures, but will produce wast air. Modern cooler technology with sophisticated plates and forced aeration systems make combustion air temperatures exceeding 1000 degree. Trend to wider and fewer grates, decrease cooling air and fixed inlets.
Kefan is profession cement equipment supplier, many more informations pls feel free to contact us at all times, detail informations we'll give you best discount!!!

High pressure mill & high pressure suspension mill comparative:

High pressure grinding mill uses a sophisticated high-pressure system, it can extend the equipment operation life, in equal measure to increase the capacity of the grinding equipment.
High pressure grinding mill and high pressure roller mill similarities are high-pressure spring between the roller and plum, which enhances the force between roller and ring. High pressure grinding mill is with high screening rates, reduced material needed to be re-grinded, saving time and energy.
Differences: after high pressure suspension grinding mill starting, the mill roller rotates around the spindle, and scrolls clinging the mill ring under centrifugal force and high pressure spring, and its scroll pressure is 1.2 times of Raymond mill in the equal power conditions. after material entering into the cavity of high pressure suspension grinding mill, material will be grinded by mill roller and mill ring, the grinded powder will be entered into the analysis machine with blower, finally, qualified fine powder will be entered into cyclone powder collector with airflow and be finished products.
Many more technology informations of high pressure mill and high pressure suspension mill please contact us at all times, detail informations we will give you best discount!!!

Which factors can effect wood powder machine production efficiency?

Wood powder machine is high efficiency wood processing equipment, during production process will effect by environment, material and other factors. Has big effect on high effect production. Then what are the factors to effect the wood powder making machine?
1. Raw material hardness. Harder raw material is diffcult for the machine to crush and also will abrasion the machine serious. Lead to wood powder machine working with low speed, low production capacity. So, we should improve technical and purchase new material for the machine using.
2. Raw mateiral humidity. When raw material with much moisture, material will conglutinate on the wood powder machine easily and easy to stoppage during discharging conveying process, lead to wood material grinding ability decrease. So, under the reasonable condition, you should decrease raw material humidity as much as possible.
3. Wood powder machine after crushed products fineness. Higher final products fineness requirements is mean that output finer products need small crushing ability. Then only through improve wood flour machine relative technology and equipment raw material can make sure output final products finess at the same time improve production capacity.
4. Material composition, before wood powder machine crushing process, more fine powder in the raw material will effect the machine crushing ability, as the fine powder will adhere and effect transmission easily. For raw material with too much fine powder, you should screen it in advance.
5. Wood powder machine crushing spare parts(hammerhead, jaw board) more wearable with bigger crushing capacity, otherwise will effect crushing ability.

How to determine raymond mill scrapped standard?

Each equipment has it's specific using cycle time, raymond roller mill as machinery industrial common equipment, after a period of outside working time, often suffering wind and rain will accelerate raymond grinding mill inner some parts abrasion. Raymond mill for sale wearing parts main content blower, motor, reducer, reducer gear, grinding equipment, plum frame, grinding roller and analysis machien and so on. But 90% of them are raymond grinding mill wearing parts when working. If it often working under this condition will lead to the machine often happen faults. The followings are main parts scrapped standards:

1. When raymond grinding mill bearing bush abrasion bigger than 1/3 thickness, you should replace bearing bush.
2. When tooth ring wheel edge twisting degree variable line amount more than 7.5mm, you should replace it.
3. When big tooth ring tooth surface abrasion more than 25% tooth thickness, pinion abrasion low than 30% tooth thickness, it can inverted face using, when abrasion degree achieve 50%, it is scrapped.
4. Two bearing seats process surface should at the same horizontal line, hollow shaft outer surface produce groove, mark, crack, it should be replaced.
Although raymond roller mill has many manufacturers, the spare parts are casted durable materials. But even the strong material has a scrapped day, only when raymond grinding mill production process, make much more maintenance working, when spare parts abrasion to can't do normal working, replace in time, thus to make sure raymond mill production efficiency!