pfeiffer raw mill

cement mills and raw mills for high throughput rates

cement mills and raw mills for high throughput rates

High throughput rates, permanent plant availability , optimized maintenance concepts features of the MVR mill and the patented MultiDrive enabling Gebr. Pfeiffer to meet the ever rising expectations of the industry. Thanks to the innovative drive and active redundancy, an unintended stop of the grinding process is practically excluded. No matter what type of material has to be ground cement raw material, cement clinker or granulated blast-furnace slag and how different their grindability and abrasiveness may be, the MVR mill ensures throughput rates of a different dimension, around the clock, reliably and on the long term. Forget about downtime. With Pfeiffer you will grind on a grand scale.

An MVR mill may have up to six grinding rollers and up to six drive units. Thus both systems are actively redundant meaning that one or several rollers can be taken out of the system for maintenance work while mill operation continues. The same applies to the independent drive modules of the MultiDrive.

High drying capacity, short dwell time of the material to be ground, and remote control of grinding pressure and classifier rotor speed ensure a fully automatic operation of the MVR mill even with varying raw material characteristics.

Thanks to the geometry of the grinding rollers in combination with their specific suspension, there is always a parallel grinding gap, ensuring a homogeneous compaction of the material to be ground. Moreover, due to the symmetric shape of the grinding roller tires, these can be turned when worn.

Up to six stationary grinding rollers roll on a rotating grinding table. The material is drawn in between the rollers and grinding table and ground by pressure and shear. The required pressure forces are produced by a lever system comprising, among others, a roller arm, along with a hydropneumatic tension system. After being rolled over by the rollers, the material is conveyed to a stationary nozzle ring due to the rotation of the grinding table. Gases (air or hot gas) flow through this nozzle ring, take up the ground and dried material and convey it to the classifier where it is separated by the rotating wheel (rotor) into grits and fines. The grits fall back into the grinding zone whereas the fines leave the classifier with the gas flow for being separated in cyclones or a filter.

Up to six stationary grinding rollers roll on a rotating grinding table. The material is drawn in between the rollers and grinding table and ground by pressure and shear. The required pressure forces are produced by a lever system comprising, among others, a roller arm, along with a hydropneumatic tension system. After being rolled over by the rollers, the material is conveyed to a stationary nozzle ring due to the rotation of the grinding table. Gases (air or hot gas) flow through this nozzle ring, take up the ground and dried material and convey it to the classifier where it is separated by the rotating wheel (rotor) into grits and fines. The grits fall back into the grinding zone whereas the fines leave the classifier with the gas flow for being separated in cyclones or a filter.

Depending on the abrasiveness of the material to be ground and areas to be protected, different wear materials are used on our vertical roller mills. Alloy cast iron as per DIN 1695, hardfaced cast iron or composite materials with high-chromium inserts in ductile base materials: the grinding elements designed by Pfeiffer are made of high-quality materials ensuring a long lifetime. The housings and other mill components, too, are protected against wear with highly wear-resistant steel plates or hardfaced composite plates. Components which are specifically exposed to wear like gas outlet ducts have additional ceramic liners. All this is for optimum protection and short maintenance shutdown.

The highest wear occurs on the wear parts of the grinding elements as is the case with any type of vertical mill. Therefore, ease of replacement and regeneration is a major feature of the mill. The MVR mill has a modern hydraulic system used in operation and for maintenance alike. With this new type of roller suspension, the rollers can be swung out of the mill in a controlled way for ease of replacing the one-part grinding roller tires. The segmented wear parts of the grinding table are replaced, using a lifting device and the maintenance drive. Moreover, the rollers can be swung out separately. Hence grinding operation can be continued while maintenance work is done. The parts concerned can be regenerated both inside the mill and outside. Forget about downtime and maintenance problems! With active redundancy and easy maintenance you are up to date!

coal mill, gypsum mill, clay mill, etc. | pfeiffer mps mills

coal mill, gypsum mill, clay mill, etc. | pfeiffer mps mills

Highest flexibility with constant product quality, individually conceived, suitable for a variety of applications, undergoing constant development: with a number of more than 2800 mills sold, the MPS vertical mill is our proven allrounder. It can be used for the grinding of coal, petcoke, clay, limestone, quicklime and many other materials no matter how different their grindability and abrasiveness may be or whatever fineness or drying degree is required. The MPS mill also grinds, dries, calcines, and classifies gypsum without any problem, all in a single machine, for any fineness requested and considering individual requirements. The MPS vertical roller mill - built to last, reliable and energy-efficient - is the optimum solution when it comes to performing several process steps in one unit.

High drying capacity, short dwell time of the material to be ground, and remote control of grinding pressure and classifier rotor speed ensure a fully automatic operation of the MPS mill even with varying raw material characteristics.

Three stationary grinding rollers roll on a rotating grinding table. The material is drawn in between the rollers and grinding table and ground by pressure and shear. The required pressure forces are produced by a hydropneumatic tension system. After being rolled over by the rollers, the material is conveyed to a stationary nozzle ring due to the rotation of the grinding table. Gases (air or hot gas) flow through this nozzle ring, take up the ground and dried material and convey it to the classifier where it is separated by the rotating wheel (rotor) into grits and fines. The grits fall back into the grinding zone whereas the fines leave the classifier with the gas flow for being separated in cyclones or a filter.

Three stationary grinding rollers roll on a rotating grinding table. The material is drawn in between the rollers and grinding table and ground by pressure and shear. The required pressure forces are produced by a hydropneumatic tension system. After being rolled over by the rollers, the material is conveyed to a stationary nozzle ring due to the rotation of the grinding table. Gases (air or hot gas) flow through this nozzle ring, take up the ground and dried material and convey it to the classifier where it is separated by the rotating wheel (rotor) into grits and fines. The grits fall back into the grinding zone whereas the fines leave the classifier with the gas flow for being separated in cyclones or a filter.

Three stationary grinding rollers roll on a rotating grinding table. The material is drawn in between the rollers and grinding table and ground by pressure and shear. The required pressure forces are produced by a hydropneumatic tension system. After being rolled over by the rollers, the material is conveyed to a stationary nozzle ring due to the rotation of the grinding table. Gases (air or hot gas) flow through this nozzle ring, take up the ground and dried material and convey it to the classifier where it is separated by the rotating wheel (rotor) into grits and fines. The grits fall back into the grinding zone whereas the fines leave the classifier with the gas flow for being separated in cyclones or a filter.

Three stationary grinding rollers roll on a rotating grinding table. The material is drawn in between the rollers and grinding table and ground by pressure and shear. The required pressure forces are produced by a hydropneumatic tension system. After being rolled over by the rollers, the material is conveyed to a stationary nozzle ring due to the rotation of the grinding table. Gases (air or hot gas) flow through this nozzle ring, take up the ground and dried material and convey it to the classifier where it is separated by the rotating wheel (rotor) into grits and fines. The grits fall back into the grinding zone whereas the fines leave the classifier with the gas flow for being separated in cyclones or a filter.

Three stationary grinding rollers roll on a rotating grinding table. The material is drawn in between the rollers and grinding table and ground by pressure and shear. The required pressure forces are produced by a hydropneumatic tension system. After being rolled over by the rollers, the material is conveyed to a stationary nozzle ring due to the rotation of the grinding table. Gases (air or hot gas) flow through this nozzle ring, take up the ground and dried material and convey it to the classifier where it is separated by the rotating wheel (rotor) into grits and fines. The grits fall back into the grinding zone whereas the fines leave the classifier with the gas flow for being separated in cyclones or a filter.

Three stationary grinding rollers roll on a rotating grinding table. The material is drawn in between the rollers and grinding table and ground by pressure and shear. The required pressure forces are produced by a hydropneumatic tension system. After being rolled over by the rollers, the material is conveyed to a stationary nozzle ring due to the rotation of the grinding table. Gases (air or hot gas) flow through this nozzle ring, take up the ground and dried material and convey it to the classifier where it is separated by the rotating wheel (rotor) into grits and fines. The grits fall back into the grinding zone whereas the fines leave the classifier with the gas flow for being separated in cyclones or a filter.

Depending on the abrasiveness of the material to be ground and areas to be protected, different wear materials are used on our vertical roller mills. The grinding elements are primarily made of alloy cast iron as per DIN 1695, hardfaced cast iron or composite materials with high-chromium inserts in ductile base materials. The housings and other mill components are protected against jet wear with highly wear-resistant steel plates or hardfaced composite plates. Components which are specifically exposed to wear like gas outletducts have additional ceramic liners. All this is for optimum protection and short maintenance shutdown.

The highest wear occurs on the wear parts of the grinding elements as is the case with any type of vertical mill. Therefore, ease of replacement and regeneration is a major feature of the mill. With our proven Lift-and-Swing System, wear parts can be replaced rapidly through one single maintenance door. The grinding rollers and grinding table segments are driven to the maintenance door with the maintenance drive and are swung out of the grinding area. As a result maintenance downtime is reduced and work is easy and safe.

cement mills and raw mills for small to medium throughput rates

cement mills and raw mills for small to medium throughput rates

For the preparation of cement raw material, cement, and granulated blast-furnace slag with small to medium output rates, the MVR mill with conventional drive is the right choice. This mill type is by the way the core piece of our modular ready2grind system. High plant availability and optimized maintenance concepts are the features that make sure the mill meets the ever rising requirements of the industry. In combination with the conventional drive, the MVR mill ensures small to medium output rates, reliably and on the long term.

Up to six grinding rollers may be swung out separately, using only one hydraulic unit for maintenance and operation. This system is actively redundant meaning that operation continues while two or several opposite grinding rollers are taken out of the system.

Thanks to the geometry of the grinding rollers in combination with their specific suspension, there is always a parallel grinding gap, ensuring a homogeneous compaction of the material to be ground. Moreover, due to the symmetric shape of the grinding roller tires, these can be turned when worn.

Thanks to low specific wear rates, high-quality wear materials and sophisticated service concepts, maintenance times of the MVR mill are reduced to minimum which is additionally supported by the active redundancy of the grinding rollers.

High drying capacity, short dwell time of the material to be ground, and remote control of grinding pressure and classifier rotor speed ensure a fully automatic operation of the MVR mill even with varying raw material characteristics.

Up to six stationary grinding rollers roll on a rotating grinding table. The material is drawn in between the rollers and grinding table and ground by pressure and shear. The required pressure forces are produced by a lever system comprising, among others, a roller arm, along with a hydropneumatic tension system. After being rolled over by the rollers, the material is conveyed to a stationary nozzle ring due to the rotation of the grinding table. Gases (air or hot gas) flow through this nozzle ring, take up the ground and dried material and convey it to the classifier where it is separated by the rotating wheel (rotor) into grits and fines. The grits fall back into the grinding zone whereas the fines leave the classifier with the gas flow for being separated in cyclones or a filter.

Up to six stationary grinding rollers roll on a rotating grinding table. The material is drawn in between the rollers and grinding table and ground by pressure and shear. The required pressure forces are produced by a lever system comprising, among others, a roller arm, along with a hydropneumatic tension system. After being rolled over by the rollers, the material is conveyed to a stationary nozzle ring due to the rotation of the grinding table. Gases (air or hot gas) flow through this nozzle ring, take up the ground and dried material and convey it to the classifier where it is separated by the rotating wheel (rotor) into grits and fines. The grits fall back into the grinding zone whereas the fines leave the classifier with the gas flow for being separated in cyclones or a filter.

Depending on the abrasiveness of the material to be ground and areas to be protected, different wear materials are used on our vertical roller mills. Alloy cast iron as per DIN 1695, hardfaced cast iron or composite materials with high-chromium inserts in ductile base materials: the grinding elements designed by Pfeiffer are made of high-quality materials ensuring a long lifetime. The housings and other mill components, too, are protected against wear with highly wear-resistant steel plates or hardfaced composite plates. Components which are specifically exposed to wear like gas outlet ducts have additional ceramic liners. All this is for optimum protection and short maintenance shutdown.

The highest wear occurs on the wear parts of the grinding elements as is the case with any type of vertical mill. Therefore, ease of replacement and regeneration is a major feature of the mill. The MVR mill has a modern hydraulic system used in operation and for maintenance alike. With this new type of roller suspension, the rollers can be swung out of the mill in a controlled way for ease of replacing the one-part grinding roller tires. The segmented wear parts of the grinding table are replaced, using a lifting device and the maintenance drive. Moreover, the rollers can be swung out separately. Hence grinding operation can be continued while taking out two opposite rollers at a time. The parts concerned can be regenerated both inside the mill and outside. Forget about downtime and maintenance problems! With active redundancy and easy maintenance you are up to date!

raw mills for all requirements | gebr. pfeiffer

raw mills for all requirements | gebr. pfeiffer

Depending on its deposit and composition, the cement raw material may contain a more or less big portion of water. Especially with high feed moistures, drying is of particular importance because the existing surface moisture has to be evaporated almost down to zero in the raw mill. The thermal energy required for this purpose is made available in the form of hot gases which are drawn through the mill. To handle the large gas flow needed when high moisture rates are involved, a bigger mill housing can be provided. Such measure might also be taken in case the available gases have a relatively low temperature, for example when they come from a heat recovery system.

Almost any plant for the grinding of cement raw material is a combination of machines specially adapted to the particular physical properties of the material to be ground. As our solutions are designed to suit the customers requirements, we can guarantee that our mills work efficiently without any trouble.

Cement raw material is a mixture of different minerals. The mixture must contain a defined ratio of calcium oxide, quartz, aluminum oxide, and iron oxide as required for clinker production. Calcium oxide is contained in various types of limestone but also in marl, shelly limestone, or chalk. To add aluminum oxide to the mixture, clay is used as a rule. Alternatively, bauxite is used but less often. Marl which can be used as a component includes calcium oxide, aluminum oxide, and quartz. The latter is also contained in clay. The required percentage may as well be ensured by adding sand. The iron oxide component is ensured via the iron ore included in the cement raw material mixture.

The cement raw material mixtures are ground, dried, and classified in the Pfeiffer vertical roller mill. For drying the material, hot gases are directed into the mill. Product fineness can be adjusted within a wide range (0.063 to 0.2 mm). The ground and dried product is separated from the process gas in a cyclone collecting system which is followed by the mill fan. Downstream of the mill fan, the gas volume flow is divided: part of it flows back to the mill, the remainder is directed through a dust collection unit and then evacuated from the system. The mill is equipped with an external material recirculation allowing the reduction of pressure loss in the mill. It can also be used for emptying the mill in case of maintenance.

gebr. pfeiffer

gebr. pfeiffer

Gebr. Pfeiffer supplies innovative plant solutions for cement, coal, lime, gypsum and ceramics on which you can rely 100 %. We only give our word if we know we can keep it. And we keep what we have promised. Extremely reliable and with excellent results. For sustainable economic success. What can we do for you?

The contract was awarded not only because of the customers satisfaction with the first mill but also because of the Pfeiffer mill grinding the kaolin much more efficiently than its competitors mills.

The essential modules of all three MVR mills will have the same design and therefore be interchangeable; the advantages in terms of spare parts management and maintenance of the mills will be significant.

In addition to short specialist talks, the two-day event was an opportunity for knowledge transfer between mineral processing specialist Gebr. Pfeiffer and leading figures from various cement companies in India.

As part of the companys expansion strategy to spread grinding plants across the whole of India, Shree Cement will now equip a grinding plant near Pune in the state of Maharashtra with a Pfeiffer mill.

The contract includes the supply and installation from the top of the foundation up. It comprises the complete process equipment, electrical equipment and automation system as well as the complete building on EPC basis.

More than 50 attendees were welcomed, representing clients from all over the MENA region who were given the opportunity to profit from the Pfeiffer experts experiences and to use them for the Pfeiffer mills in operation at their works.

Even though our team is very much looking forward to meeting our business partners in person again, which due to the current situation is not possible, sales, service and all support functions are still available via e-mail, telephone and video chat. Our supervisors and commissioning engineers are also there for you as far as possible and if feasible.

At the end of March, we received an inquiry from the Kaiserslautern District Medical Association as to whether we could pass on protective equipment to doctors in private practice in Kaiserslautern to enable them to continue providing appropriate care for their patients. Of course, we were pleased to be able to do so.

BIGBOSS CEMENT Inc., (BBCI) with a plant located in the province of Pampanga, Philippines has recognized the advantages of this modular plant concept, comprising a 4-roller vertical roller mill, and is of the opinion that ready2grind meets the requirements and provides the highest plant availability.

pfeiffer - cement industry news from global cement

pfeiffer - cement industry news from global cement

Bolivia: Itacamba Cemento SA has awarded its new raw material grinding solution to Gebr. Pfeiffer Inc, a subsidiary of Gebr. Pfeiffer SE. The company's new 2000t/day capacity cement plant will be located in the municipality of Yacuces, Germn Busch Province.

Gebr. Pfeiffer will supply the raw material grinding system, using an MPS 3750 B mill as its key component. Raw material output will be 210t/hr with a fineness of 14% residue on 90. The project scope includes a rotary lock DSZ 1400 R, a raw mill MPS 3750 B, a classifier SLS 3150 B, cyclones AZZ 500 and related engineering and spare parts. Delivery to the Yacuces Plant is scheduled for the second quarter of 2015.

Egypt: Titan Cement has ordered a vertical roller mill of the type MPS 2800 BK from Gebr. Pfeiffer SE, to be set up in production line no. 1 at its Beni Suef plant. The mill is designed for a finished product rate of 40t/hr and will grind coal with a Hardgrove grindability index of 45 to a product fineness of 12% residue 90m, while simultaneously drying it from a maximum 12% feed moisture to a maximum 1% residual moisture by using hot gases from the cement process.

India: Wonder Cement Limited is planning to expand the capacity of its cement plant at Tehsil Nimbahera in Chittorgarh district of Rajasthan. The company has placed an order with Gebr. Pfeiffer for raw meals and coal mills.

India: Wonder Cement, based in Rajasthan, India has placed another order with Germany's Gebr. Pfeiffer SE for the supply of raw meal and coal mills to India. The order was awarded to Gebr. Pfeiffer following positive experiences with identical mills that already operate at Wonder Cement's plant.

Active in the lime and cement industries Wonder Cement is planning to extend its cement plant in Tehsil Nimbahera in the Chittorgarh District. A rotary kiln with a capacity of an approximate 8500t/day will be supplied by the raw mill and coal mill ordered from Gebr. Pfeiffer.

The MPS 5600 B to be installed for the production of 605t/hr of raw meal with a fineness of 1.5% residue on the 212m sieve will be equipped with a 5600kW drive. The coal mill will be produced on an MPS 3070 BK with a capacity of 40t/hr with a product fineness of 2% residue on the 90m sieve. Due to the high abrasiveness of Indian coal, the mill will be equipped with adapted wear protection

Algeria: Germany's Gebr. Pfeiffer SE has won a contract through the Chinese General Contractor CBMI to supply a MVR 6700 C-6 type cement mill and a MVR 6000 R-6 raw mill, both of which will be installed at the Lafarge cement works situated near the Algerian town of Biskra. The cement mill is the second-largest in the world after a mill supplied by Gebr. Pfeiifer to Holcim's Barosso plant in Brazil.

The cement mill, featuring Gebr. Pfeiffer's MultiDrive concept with an installed total drive power of 9125kW, will produce 231-342t/hr of OPC ground to a product fineness of 3700-4800cm/g according to Blaine.

The raw mill, which will come equipped with a conventional drive with an installed power of 6120kW, is designed to grind 680t/hr of cement raw material to a finished product fineness of 12% R 90 m and 460t/hr of limestone to a product fineness of 1% R 150m.

Turkey: Gebr. Pfeiffer SE has received another order from Bolu Cimento Sanayii A.S., Turkey. In addition to the three MPS mills that Bolu Cimento ordered in December 2013 for the Kazan, Ankara Province plant, this order will see Gebr. Pfeiffer supply an MPS 4500 BC mill for the grinding of granulated blast furnace slag, which will be set up at Bolu Province plant. The mill will be identical to the cement mill that will be installed in Kazan.

The mill is designed to reach a throughput rate of 85t/hr of slag, ground to a product fineness of 4500 - 4750cm/g. Gebr. Pfeiffer's scope will include the core components of the mill and classifier as well as the mill gearbox. The required drawings and parts lists for the local manufacture of housing and steel parts as well as documents for quality control will also be produced and supplied.

In Turkey, Bilim Makina has ordered four mills for a cement plant in Elazig. The order covers an MPS 250 BK roller mill with a drive power of 500kW for coal grinding and two safety shut-off dampers. The mill is designed to yield 35t/hr of petroleum coke, with the material being ground to a fineness of 3.5% R90 m. A MPS 5000 B mill will be used for cement raw material grinding. The mill featuring a drive power of 3800kW will be capable of producing 470t/h of cement raw material ground to a fineness of 12% R 90m. Two MPS 5000 BC vertical roller mills will be used for cement grinding. Each of the mills features a drive power of 4400kW and will grind 200t/h of Ordinary Portland Cement with a specific surface of 3400cm2/g acc to blaine. All four mills are scheduled to be delivered in the spring of 2015.

In Iraq, Sinoma Suzhou Construction, acting as general contractor, has ordered two MVR 6000 C-6 cement mills. The two MVR cement mills will come equipped with a conventional drive with an installed power of 6000kW. They will grind various cement qualities to the required fineness degrees between 3600 - 5500cm2/g depending on the product type, achieving capacities of 132 - 210t/hr. The cement mills are scheduled to be delivered at the end of 2014.

In Malaysia, Sinoma subsidiary Tianjin Cement Industry Design & Research Institute (TCDRI) has ordered one MPS 2800 BK coal mill for YTL Cement. Featuring an installed power of 700kW, the coal mill will be grinding 35t/hr of a sub-bituminous coal with a total moisture content of 25% to a product fineness of 10% R 90m. The delivery of the mill is scheduled for the end of 2014.

US: Gebr. Pfeiffer Inc., the US subsidiary of Germany's Gebr. Pfeiffer SE, has been contracted to supply a new raw material vertical roller mill for the Holcim (US) Hagerstown plant as part of a wider renovation project. The order was placed through KHD Humboldt Wedag, which is the engineering and equipment supplier for the Hagerstown plant modernisation. KHD has been contracted to modify the existing production line to increase the plant's potential production rate to approximately 2400t/day and to comply with the new NESHAP environmental regulations.

KHD's scope of supply begins with modifying the raw material feed system and continues through to the clinker handling system and storage hall. As part of the solution, a new raw material grinding mill, the MPS 3750 B, along with all related engineering services will be supplied by Gebr. Pfeiffer, Inc. The raw material grinding mill includes a rotary air lock with drive, MPS 3750 B mill, an SLS 3150 B high efficiency classifier and includes Gebr. Pfeiffer's patented 'Lift and Swing' technology.

India: Gebr. Pfeiffer SE and its Indian subsidiary Gebr. Pfeiffer (India) Pvt. Ltd have won a contract with Kolkata-based Emami Cement Ltd, which includes four of the latest design of the MVR mill and an MPS mill for coal grinding.

Emami Cement, an enterprise of the private Emami Group of companies, is a newcomer to the Indian cement industry. It operates in many fields of the consumer goods sector and the decision to set up a greenfield cement works in Chhattisgarh and various grinding plants in east India was preceded by a detailed analysis of the market situation.

The order covers an MVR 6000 R-6 roller mill with an installed drive power of 6700kW for raw material grinding. The mill is designed to yield 610t/hr of raw meal, with the difficult-to-grind material being ground to a fineness of 15% R 90m.

Three mills of the type MVR 6000 C-6, which is Gebr. Pfeiffer's current top seller, will be used for cement grinding. Each of the mills features an installed drive power of 6700kW and will be capable of producing 335t/hr of ordinary portland cement (OPC). The grinding plants will also be designed to allow fly ash cement and granulated blast-furnace slag to be ground to a fineness of 3800cm/g according to Blaine and 4000 cm/g according to Blaine, respectively.

While Gebr. Pfeiffer SE will supply the core components of the mills and the gear units from Europe, its Indian subsidiary, Gebr. Pfeiffer (India) Pvt. Ltd, will provide components such as housing of the mills and classifiers, the steel foundation parts as well as the interior parts of the classifiers. In addition, the Indian subsidiary will design the plant layout and advise the customer on the equipment.

US: Lafarge North America has contracted Gebr. Pfeiffer Inc. to supply an MVR vertical roller mill as part of the overall modernisation project underway at the Lafarge Ravena plant located in the Town of Coeymans, New York. The modernisation project will replace the current wet process kiln with a dry line, allowing the plant to cut emissions and also increase its capacity.

A Gebr. Pfeiffer MVR 6000 R-6 will be installed in a complete new line at the plant, replacing two existing raw material mills. The scope of supply will also includes a 5600kW motor, engineering, supply and related services. Commissioning for this project is planned for the middle of 2016.

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