rotary vibrating screen strong carrying capacity gf2pgc roller coarse crusher

Just fill in the form below, click submit, you will get the price list, and we will contact you within one working day. Please also feel free to contact us via email or phone. (* is required).

  • 【Double teeth roller crusher】/roller crusher/double roller ...

    Double teeth roller crusher is also called roller crusher. According to crushing granularity, double teeth roller crusher is divided into GF2PGX two roller fine crusher and GF2PGC two roller coarse crusher…

    Get Price
  • 【Tooth roller crusher】/double teeth roller crusher/tooth ...

    The tooth roller crusher is also known as double tooth roller crusher. The tooth roller crusher is mainly used for coal crushing in thermal power plants, thermal power …

    Get Price
  • screening plant rotary vibrating screen

    2021-6-21 Rotary vibrating screen is designed as a high-precision screening machinery. It is composed of vertical motor,and eccentric weight installed at two ends. Dewatering screen consists of screen cloth, vibration exciter, supporting system and motor. It is widely used in. Get Price.

    Get Price
  • lentil ultrasonic rotary vibrating screen

    Ultrasonic vibrating screen, vibrating screen. Ultrasonic Vibrating Screen Describe: Ultrasonic rotary vibrating screen really solves the strong adsorption, strong viscosity, high static, high density, ultrafine powders, and other characteristics of the materials screening problem; ultrasonic vibration screen is non block screen mesh.

    Get Price
  • plastic clay new design vibrating screen - Top Project ...

    We have plastic clay new design vibrating screen,Different to other type screens, the vibromotors of high-frequency screens are mounted on each deck instead of on the screen body. Aggressive vibration is applied within a range of 3600–5000 RPM directly to the screen media, allowing for higher capacity and more efficient sizing when compared with conventional screens

    Get Price
  • advantaged and disadvantages of vibrating screens

    Vibrating Screen Newest Crusher, Grinding Mill, Mobile, disadvantage of vibrating screens 26109,The vibrating screen is a kind of sieving equipment of international advanced level, developed by our pany on the basis of carrying on the advantages of traditional screens and absorbing the outstanding technology from abroadVibrating screens

    Get Price
  • TRF - SlideShare

    2016-3-27 · Types of screens used are vibratory inclined, stationary inclined, vibrating grizzly, vibrating horizontal and rotary. The vibrating inclined screen is the most popular of the screen types, it has proven to be the most reliable screen for aggregate separation. The addition of extra counterweight allows the screen to handle dense, coarse aggregate.

    Get Price
  • Mechanical Components & Precision Engineering Parts ...

    Our Vibrating screens work on the principle of linear displacement of the materials due to unbalance forces generated by two unbalance motors rotating in opposite direction. These screens are basically used to separate coarse materials from fine materials which exit in mixed form.

    Get Price
  • Production Equipments - Gravity Jigging Separator ...

    A multi-frequency Dewatering Vibrating Screen has large capacity and it can be full dehydration. The efficient multi-frequency dewatering screen adopts screen side opening holes, and the water flows out from the hole quickly accelerating the dewatering speed, in addition, it avoids the damage due to water splashed onto the motor.

    Get Price
  • Raymond mill,China Raymond mill--Hongxing Machinery

    2021-3-15 · Raymond mill. The machine is used for grinding the barite, limestone, kaolin, porcelain clay, and slag, etc, below scale 9.3 of Mohs hardness and 280-odd sorts of non-inflammable and non-explosive stuff in the trades of mining, metallurgical industrial, chemical engineering and building material for high fine powder generation and processing.

    Get Price
  • advantaged and disadvantages of vibrating screens

    Vibrating Screen Newest Crusher, Grinding Mill, Mobile, disadvantage of vibrating screens 26109,The vibrating screen is a kind of sieving equipment of international advanced level, developed by our pany on the basis of carrying on the advantages of traditional screens and absorbing the outstanding technology from abroadVibrating screens

    Get Price
  • carbon rotary sieve vibrating screen

    Rotary Vibrating Sieve Rotary Vibrating Screen - Gaofu S49-A Rotary Vibrating Sieve is widely applied in food industry, pharmaceutical industry, metallurgic

    Get Price
  • screen vibrating range - bandrawinefestival.in

    2021-1-20 · 5 Vibrating Screen Common Problems And How To Solve? For linear vibrating screen and high frequency vibrating screen, the poor screening quality may be related to the movement direction of eccentric block, because two groups of eccentric blocks with the same mass need to rotate in self-synchronization and reverse direction to produce a single exciting force along the vibration direction at ...

    Get Price
  • Ultimate Guide To Ore Washing - JXSC Machine

    2019-10-25 · 2. Vibrating washing screen. vibrating screen product Mine use vibrating screens often adopts double-layer screens for screening medium and fine crushed ore. Add a high-pressure water flushing device on the fixed screening machine. The flushing water pressure is generally 0.2-0.3 MPa, and the water consumption per ton of ore is 1 ~ 2 m3.

    Get Price
  • Hi Power Copper Vibrating Screen - kancelaria-maraszek.pl

    Crusher Amp Amp Screen Mfg Mpanies In Baroda. Woven wire screen anticlogging mesh polyurethane screen anping red star wire mesh mfg company which is founded in 1989 has been devoted into wire cloth and screen media production for 26 years the company owns 18 patented products all of them have been up to eu gb and astm standards the company has acquired certificates of iso 14001 …

    Get Price
  • Gyratory Crusher l Introduce, Working Principle - JXSC Mine

    2021-9-2 · Gyratory crusher is a new type of crusher which can replace fine jaw crusher or cone crusher. The gyratory crushing equipment has a bright future in the mineral processing market. Its working part is a high-speed rotary crushing roller, which is coupled with a pair of curved crushing plates arranged symmetrically on the left and the right to ...

    Get Price
  • Mechanical Components & Precision Engineering Parts ...

    Our Vibrating screens work on the principle of linear displacement of the materials due to unbalance forces generated by two unbalance motors rotating in opposite direction. These screens are basically used to separate coarse materials from fine materials which exit in mixed form.

    Get Price
  • area of a vibrating screen - schroniskogoldap.pl

    SCREEN CAPACITY CALCULATION - VIBFEM VIBRATING SCREEN – CAPACITY CALCULATIONS Throughput per square foot of screen area is the name of the screen game, and n

    Get Price
  • TRF - SlideShare

    2016-3-27 · Types of screens used are vibratory inclined, stationary inclined, vibrating grizzly, vibrating horizontal and rotary. The vibrating inclined screen is the most popular of the screen types, it has proven to be the most reliable screen for aggregate separation. The addition of extra counterweight allows the screen to handle dense, coarse aggregate.

    Get Price
  • Magnetic Separators - Wet Drum Magnetic Separators ...

    Wet Drum Magnetic Separators. Rs 1.4 Lakhs / Unit Get Latest Price. Capacity. 15-120ton/hour. Magnetic Intensity. 1200~400 Gauss. Power. 5.7kW. Wet Drum Magnetic Separators is to recover the maximum amount of ferrous by using the intensity of the permanent magnet.

    Get Price
  • Production Equipments - Gravity Jigging Separator ...

    A multi-frequency Dewatering Vibrating Screen has large capacity and it can be full dehydration. The efficient multi-frequency dewatering screen adopts screen side opening holes, and the water flows out from the hole quickly accelerating the dewatering speed, in addition, it avoids the damage due to water splashed onto the motor.

    Get Price
  • Ultimate Guide To Ore Washing - JXSC Machine

    2019-10-25 · 2. Vibrating washing screen. vibrating screen product Mine use vibrating screens often adopts double-layer screens for screening medium and fine crushed ore. Add a high-pressure water flushing device on the fixed screening machine. The flushing water pressure is generally 0.2-0.3 MPa, and the water consumption per ton of ore is 1 ~ 2 m3.

    Get Price
  • screen vibrating range - bandrawinefestival.in

    2021-1-20 · 5 Vibrating Screen Common Problems And How To Solve? For linear vibrating screen and high frequency vibrating screen, the poor screening quality may be related to the movement direction of eccentric block, because two groups of eccentric blocks with the same mass need to rotate in self-synchronization and reverse direction to produce a single exciting force along the vibration direction at ...

    Get Price
  • Hi Power Copper Vibrating Screen - kancelaria-maraszek.pl

    Crusher Amp Amp Screen Mfg Mpanies In Baroda. Woven wire screen anticlogging mesh polyurethane screen anping red star wire mesh mfg company which is founded in 1989 has been devoted into wire cloth and screen media production for 26 years the company owns 18 patented products all of them have been up to eu gb and astm standards the company has acquired certificates of iso 14001 …

    Get Price
  • merits and demarits of coal vibrating screen Zimbabwe

    2021-4-27 · Merits And Demarits Of Coal Vibrating Screen Zimbabwe. Disadvantages of trommel screens aggregates,when compared to other solutions, like vibrating screens, trommels simply cannot handle the same volume of materials. while rotating, only a portion of the screen is being utilized for sizing. comparatively, the entire screen surface of other material screening solutions can

    Get Price
  • Mechanical Components & Precision Engineering Parts ...

    Our Vibrating screens work on the principle of linear displacement of the materials due to unbalance forces generated by two unbalance motors rotating in opposite direction. These screens are basically used to separate coarse materials from fine materials which exit in mixed form.

    Get Price
  • Mining equipment catalogue

    2021-7-29 · The linear vibrating screen is driven by a double-vibration motor. When the two vibrating motors are synchronized and rotated, the exciting force generated by the eccentric block cancels each other in a direction parallel to the motor axis and is stacked in a direction perpendicular to the motor axis. A combined force, so the movement of the ...

    Get Price
  • area of a vibrating screen - schroniskogoldap.pl

    SCREEN CAPACITY CALCULATION - VIBFEM VIBRATING SCREEN – CAPACITY CALCULATIONS Throughput per square foot of screen area is the name of the screen game, and n

    Get Price
  • TRF - SlideShare

    2016-3-27 · Types of screens used are vibratory inclined, stationary inclined, vibrating grizzly, vibrating horizontal and rotary. The vibrating inclined screen is the most popular of the screen types, it has proven to be the most reliable screen for aggregate separation. The addition of extra counterweight allows the screen to handle dense, coarse aggregate.

    Get Price
  • Magnetic Separators - Wet Drum Magnetic Separators ...

    Wet Drum Magnetic Separators. Rs 1.4 Lakhs / Unit Get Latest Price. Capacity. 15-120ton/hour. Magnetic Intensity. 1200~400 Gauss. Power. 5.7kW. Wet Drum Magnetic Separators is to recover the maximum amount of ferrous by using the intensity of the permanent magnet.

    Get Price
  • Vibrating Screen - Hailstone

    Hailstone vibrating screens are made as compact as possible for maximum screening output through continuous analysis and up gradation. Modular screening media helps for easy replacement and better life span. Advantages of Hailstone screening media are longer wear life, less material carry over, best carrying capacity and easy to handle.

    Get Price
  • screening capacity for vibrating screen

    2021-6-27 · Screening Capacity For Vibrating Screen. dynamics and screening characteristics of a vibrating screen,the results show that the traces of the new designed vibrating screen follow the ideal screening motion. the screening efficiency and processing capacity may .stm-screen two-mass, xl vibratory screen,the stm-screen two-mass, xl vibrating screen from gk is field proven & features high …

    Get Price
  • rotary vibrating screen for ceramic raw materials - INDUSTAR

    Rotary Vibrating Screen For Ceramic Raw Materials Rotary Vibrating Screen For Ceramic Raw Materials 2020511Exquisite porcelain calcining technology is very strict to the requirement of raw materials in the screening process of ceramic materials generally the particles are required to be sieved in a high precision due to the cho of the vibrating ...

    Get Price
  • The Design of Rolling Bearing Mountings - Schaeffler …

    2019-5-24 · 91 Vibrating road roller The vibrations of such road rollers are produced by an eccentric shaft. Operating data Speed of eccentric shaft n = 1,800 min –1; radial load F r = 238 kN; number of bearings z = 4; required nomi- nal rating life L Bearing selection, dimensioning

    Get Price
  • Vibrating Screen Capacity 10 Tons Per Hour

    vibrating screen 10 ton hr cadhousecoza vibrating screen for tons per hour icmeetin vibrating screen of 1 ton cap hour vibrating screen with capacity of tones cahl vibrating screen with a capacity of 50 60 tons it is a vibrating screen the plant capacity is about 80100 ton per Get Price. View Details Send Enquiry

    Get Price
  • Ultimate Guide To Ore Washing - JXSC Machine

    2019-10-25 · 2. Vibrating washing screen. vibrating screen product Mine use vibrating screens often adopts double-layer screens for screening medium and fine crushed ore. Add a high-pressure water flushing device on the fixed screening machine. The flushing water pressure is generally 0.2-0.3 MPa, and the water consumption per ton of ore is 1 ~ 2 m3.

    Get Price
  • Dwg Vibrating Screen - atlantikwallarchief.nl

    2021-3-27 · The vibrating screen is a kind of sieving equipment of international advanced level developed by our company on the basis of carrying on the advantages of read more autocad drawing of vibrating screen vibrating screen design autocad drawinggrinding mill china vibrating screen in dwg bibliocad vibrating screen to select particulate matter.

    Get Price
  • Mechanical Components & Precision Engineering Parts ...

    Our Vibrating screens work on the principle of linear displacement of the materials due to unbalance forces generated by two unbalance motors rotating in opposite direction. These screens are basically used to separate coarse materials from fine materials which exit in mixed form.

    Get Price
  • TRF - SlideShare

    2016-3-27 · Types of screens used are vibratory inclined, stationary inclined, vibrating grizzly, vibrating horizontal and rotary. The vibrating inclined screen is the most popular of the screen types, it has proven to be the most reliable screen for aggregate separation. The addition of extra counterweight allows the screen to handle dense, coarse aggregate.

    Get Price
  • Belt Conveyor manufacturers and suppliers

    Belt conveyor is a kind of machine that transfers the material continuously. The belt works under the effect of frictional force. It is not only the component to transfer the material, but also the components to transfer the force. EMCC belt conveyor is advanced and simple in structure, easy to m...

    Get Price
  • Hi Power Copper Vibrating Screen - kancelaria-maraszek.pl

    Crusher Amp Amp Screen Mfg Mpanies In Baroda. Woven wire screen anticlogging mesh polyurethane screen anping red star wire mesh mfg company which is founded in 1989 has been devoted into wire cloth and screen media production for 26 years the company owns 18 patented products all of them have been up to eu gb and astm standards the company has acquired certificates of iso 14001 …

    Get Price
  • TRF - SlideShare

    2016-3-27 · Types of screens used are vibratory inclined, stationary inclined, vibrating grizzly, vibrating horizontal and rotary. The vibrating inclined screen is the most popular of the screen types, it has proven to be the most reliable screen for aggregate separation. The addition of extra counterweight allows the screen to handle dense, coarse aggregate.

    Get Price
  • (PDF) Rotary Backer - ResearchGate

    only. The cylinder is fitted with perforated screen plates, lifting shelves, deflectors and a. refuse plow. The size of the scre en plate perforations deter mines the maximum product size of. the ...

    Get Price
  • Production Equipments - Gravity Jigging Separator ...

    A multi-frequency Dewatering Vibrating Screen has large capacity and it can be full dehydration. The efficient multi-frequency dewatering screen adopts screen side opening holes, and the water flows out from the hole quickly accelerating the dewatering speed, in addition, it avoids the damage due to water splashed onto the motor.

    Get Price
  • Magnetic Separators - Wet Drum Magnetic Separators ...

    Wet Drum Magnetic Separators. Rs 1.4 Lakhs / Unit Get Latest Price. Capacity. 15-120ton/hour. Magnetic Intensity. 1200~400 Gauss. Power. 5.7kW. Wet Drum Magnetic Separators is to recover the maximum amount of ferrous by using the intensity of the permanent magnet.

    Get Price
  • Organic Gold Screening Equipment Vibrating Screen

    Vibrating Screen,Vibrating Screen Machine,Sand Screening. Vibrating Screen Introduction. The vibrating screen is a kind of sieving equipment of international advanced level, developed by our company on the basis of carrying on the advantages of traditional screens and absorbing the outstanding technology from abroad.It is widely used for .

    Get Price
  • Vibrating Screen - Hailstone

    Hailstone vibrating screens are made as compact as possible for maximum screening output through continuous analysis and up gradation. Modular screening media helps for easy replacement and better life span. Advantages of Hailstone screening media are longer wear life, less material carry over, best carrying capacity and easy to handle.

    Get Price
  • Conveyor manufacturers and suppliers

    4. Crowned pivot rollers and idler rollers allow center belt run and facilitate belt adjustment 5. Optional rubberized drive rollers ensure optimal transmission of torque. Belt conveyor is composed of rollers and closed conveyor belt. There are two rollers one is for driving conveyor rotating another one is for changing the motor direction of ...

    Get Price
  • High Performance Sand Vibrating Screen - Belt conveyor ...

    With this motto in mind, we have turn out to be amongst probably the most technologically innovative, cost-efficient, and price-competitive manufacturers for High Performance Sand Vibrating Screen - Belt conveyor – Exceed, The product will supply to all over the world, such as: Mexico, Madras, Pretoria, Meanwhile, we're building up and consummating triangle market & strategic cooperation ...

    Get Price
  • gs 5000 gold stryker gold ore impact flail processing rock ...

    khartoum rotary vibrating screen separator 2021-8-7 · Manufacturers and Suppliers of Vibratory Screen, Industrial Rotary Screen, Rotary Valve, Industrial Conveyors, Magnetic Separator, Lumps Breaker, Mumbai, India 09223525016 / 9821328438

    Get Price
  • A review on the advanced design techniques and methods …

    2019-4-1 · In reality, a large vibrating screen, which has a screen surface width of no less than 3.6 m and a screening area of no less than 20.0m 2, usually oscillates with extremely complex dynamic characteristics of the screen body [10,11].As shown in Fig. 2 (b), generally, except for the dominated strong alternating load yielded by two box-type exciters, a large vibrating screen may also withstand ...

    Get Price
  • Crushing, Processing, Grinding & Cement Making Products ...

    Circular vibrating screen is mainly used to screen the dry materials used for metallurgy, coal, ore, etc. ... It makes a combination of two hammer crusher rotor as a whole and uses the two sets of rotor in series. Read More. Teeth roller crusher. Teeth roller crusher is mainly used in coal, metallurgy, mining, chemicals, building materials and ...

    Get Price
  • Crushing, Processing, Grinding & Cement Making Products ...

    Hammer crusher. Hammer crusher is composed of chassis body, rotor, hammer, back liner, sieve, etc.. It is suitable for conduct coarse, medium, fine crushing for materials with the compressive strength less than 180MPa like limestone, coal, gypsum, shale and other types of brittle materials.

    Get Price
  • Dynamic Simulation and Optimization of a Urea …

    2021-8-1 · The optimal control of a complete urea granulation circuit is studied in this work. The dynamic circuit operation is modeled by means of population, mass, and energy balances for the equipment of ...

    Get Price
  • Circular Vibrating Screen India - haagdeko.de

    Circular Vibrating Screen. 2019-10-11circular vibrating screen thinking about wet and dry industrial applications, we offer best quality circular vibrating screen that offers trouble free operations with high productiont offers high precision in screening with low power consumption it has vast application areat is available with good features and low maintenance.

    Get Price
  • catlouge for vibrating screen

    Engineering Data Applications VIBCO. C VIBRATING SCREENS Rule of Thumb: for selfcleaning screen use a vibrator with a centrifugal force (impact) four (4) times the weight of the material plus the weight of the screen NOTE: Coarse and lumpy materials respond best to 3600 VPM (vibrations per minute), powdery and dry materials, 1800 VPM, sticky and wet materials, over 3600 VPM

    Get Price
  • How Heat Transfer In Rotary Dryer

    2018-2-6 Direct-heat rotary dryers can operate on fuel oils natural gas propane or coal. In addition steam-heated clean air and flue gases may be used as a heating medium. Indirect-heat rotary dryers are available in steam tube designs and standard rotary models. When the standard rotary design is used convection heat transfer is employed

    Get Price
  • Crusher Used In Coal Handling Plant - jumualtdorf.ch

    CrusherHammer mill types crusher are generally used in coal sampling unit.See more on coalhandlingplants Coal Handling Plants A Complete Details About CHP Equipments Coal handling plant consists of track hopper,feeders, conveyor system, roller screen, crusher, stacker reclaimer, compressor,dfds system,ttr,pumps etc. get price

    Get Price
  • uganda glass crushing machine copper hydrocyclonesteel

    Stone Crushing Machinery Prices In Uganda. Uganda Small Stone Crusher For Sale Haagdeko Stone crushing machinery prices in ugandaDec 09, 2014 stone crusher plant price india in a stone crusher plant, it include the vibrating feeder, jaw crusher, impact crusher, vibrating screen and so onso when we consider the price, there will be many aspects need to be considered, because different machine ...

    Get Price
  • rpm for shaft of a copper vibrating screen

    Calculating the G-force of a Vibrating Screen - Wix.com Jul 8 2015 ... w = shaft rotational speed RPM. f = frequency Hz. n = number of poles of the motor. ... 911 Metallurgist Review the screen sizing formula and the effects that each of the above can have ... Carrying Capacity - amount of material a vibratory screen can carry over the ...

    Get Price
  • screening capacity for vibrating screen

    2021-6-27 · Screening Capacity For Vibrating Screen. dynamics and screening characteristics of a vibrating screen,the results show that the traces of the new designed vibrating screen follow the ideal screening motion. the screening efficiency and processing capacity may .stm-screen two-mass, xl vibratory screen,the stm-screen two-mass, xl vibrating screen from gk is field proven & features high …

    Get Price
  • Dwg Vibrating Screen - atlantikwallarchief.nl

    2021-3-27 · The vibrating screen is a kind of sieving equipment of international advanced level developed by our company on the basis of carrying on the advantages of read more autocad drawing of vibrating screen vibrating screen design autocad drawinggrinding mill china vibrating screen in dwg bibliocad vibrating screen to select particulate matter.

    Get Price
  • big capacity ceisogost line vibrating screen

    What is the Screening Capacity of Vibrating Screen per Area. Average ores carrying up to 10% moisture can be screened to 10 mesh without previous drying: beyond that, the vibratory screening should be wet with 3 to 35 ratio of water to ore Approximate Tons thru screen per square foot screening area per 24 hours, wet or dry moisture and screen efficiency Screen Capacity of Crushing Plants ...

    Get Price
  • Mining equipment catalogue

    2021-7-29 · The linear vibrating screen is driven by a double-vibration motor. When the two vibrating motors are synchronized and rotated, the exciting force generated by the eccentric block cancels each other in a direction parallel to the motor axis and is stacked in a direction perpendicular to the motor axis. A combined force, so the movement of the ...

    Get Price
  • DZS Linear Vibration Screen,Mining Equipment,Screen real ...

    The DZS linear vibrating screen is mainly made up of straining box, deck base, screen, vibration motor, bed box of motor, damping spring,support and other parts. Straining box: the straining box is welded by various thickness steel plate, which has a definite strength and rigidity. It is the main component of the DZS linear vibrating screen.

    Get Price
  • merits and demarits of coal vibrating screen Zimbabwe

    2021-4-27 · Merits And Demarits Of Coal Vibrating Screen Zimbabwe. Disadvantages of trommel screens aggregates,when compared to other solutions, like vibrating screens, trommels simply cannot handle the same volume of materials. while rotating, only a portion of the screen is being utilized for sizing. comparatively, the entire screen surface of other material screening solutions can

    Get Price
  • (PDF) Rotary Backer - ResearchGate

    only. The cylinder is fitted with perforated screen plates, lifting shelves, deflectors and a. refuse plow. The size of the scre en plate perforations deter mines the maximum product size of. the ...

    Get Price
  • large capacity vibrating screen for granit

    2021-4-22 · Large Capacity Vibrating Screen For Granit Vibrating screen manufacturer vibrating screening,capacity: ph; material: granite, marble, basalt, limestone, quartz, pebble, copper ore, iron ore and so on; vibrating screen is a number of layers, efficient new shaker. mainly by the sieve box, exciter, suspension devices and motors and other components, reliable structure, strong exciting force, high ...

    Get Price
  • Gs 800 high speed crusher roller

    Gs 800 high speed crusher roller Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Gs 800 high speed crusher roller, quarry, aggregate, and different kinds of minerals.

    Get Price
  • Traylor Lime Kiln Bearings, Rotary Kiln

    Solutions 100T/H Limestone Crushing Line In Switzerland. Main Equipments: PE series jaw crusher, impact crusher, sand maker, raymond grinding mill, vibrating screen and vibrating feeder. 200-350T/H Sand Production Line In Turkey. The 200-350t/h sand production line in Turkey is designed in August, 2014, and put into use in October. .

    Get Price