Miner crusher
what attracts more attention is that the proponents of the concepts of "learning ledger" and "ecation blockchain" claim that they can track and record the real-time income of learners, so as to analyze and determine which knowledge, skills, courses or majors can bring more rewards to learners, so as to provide advice and guidance for later learners; Learners themselves can also use the "learning account book" to seek sponsors who are willing to invest in their learning. The principle behind this is that the "learning account book" can track and record the rewards that learners get through each ecation blockchain, so the sponsors can ask for a certain proportion of the learners' income as their return on investment, The protocol between learners and investors is managed by smart contract. Like bitcoin's technology foundation, "learning ledger" is also built on blockchain technology, which means that every ecation blockchain acquired by learners will become an eternal record of knowledge and skills that are constantly increasing and will not be deleted on the "learning ledger"< br /> MOOCS and open ecation resource movement, which are born out of technological innovation, have and will continue to reconstruct the essence, connotation and boundary of ecation in the era of sharing economy, reshape the mission, function and organization mode of ecational institutions in the digital era, and promote the reform of teaching philosophy, content and mode in the teaching environment of technology empowerment. The development and application of blockchain technology has created a new technical basis and practice mode for the reform of ecation and teaching.
1. Calculate I = Dmax / Dmax by the ratio of the maximum particle size of the material before crushing and the maximum particle size of the proct after crushing, where Dmax is the maximum particle size of the material before crushing; dmax― http://www.ysxuankuang.com/cpzx.html - the maximum particle size of the material after crushing
2. The ratio of the effective width of the feeding port and the width of the discharging port of the crusher
I = 0.85b/b
where
b --- the width of the feeding port of the crusher; B --- Crusher & lt; Width of discharge port
0.85 -
ensure the effective width of the crusher gripping the material. The maximum width of discharge port is selected for coarse crusher; Take the minimum width of discharge port for middle crusher
3. Calculate with average particle size
I = DCP / DCP
where
DCP - average diameter of material before crushing; DCP - average diameter of crushed material. The crushing ratio obtained by this method can truly reflect the crushing degree of sand and stone equipment.
as for Vicat, many posts on the Internet have been exposed as scams. Babbitt, a well-known virtual currency information website, has exposed the pyramid selling mechanism of the project:
Dr. ruja ignatova, who is also the founder, boss and COO of Vicat, according to their own description, is a person with rich business experience and outstanding business mind behind the scenes. According to the information on Vicat's website, she received her degree from Oxford University and the University of Constance, and is a former CEO of CSIF, a Bulgarian private investment company
Vicat's official website has her authoritative resume information, but according to the document, the exact information of this person can't be found at all. Ignatova's experience of attending the Harvard Negotiation Course was only mentioned on the website of the Vicat global foundation. Of course, her resume is no longer trustworthy< According to the records on ignatova's website, she graated from Oxford University with a master's degree in law in 2004. The sites in question were edited by WordPress, blogspot and Weebly, and the last two blogs, which are also edited in German, mentioned that she worked after graating from Oxford University in 2004. But the certificate scanned from Vicat's official website points out that she graated only in 2009, not in 2004
we contacted CSIF to confirm whether the Bulgarian private investment company is true or not, but cointelegraph did not receive a reply when editing this article. Sebastian Greenwood and Nigel Allan are involved in the operation of Vicat in various capacities, and they have been involved in fraud before<
Greenwood previously participated in the pyramid scheme organization Unaico. Their activities were warned by the Pakistan securities and Exchange Commission, which referred to their activities as "illegal pyramid schemes" and advised consumers to stay away from the so-called lucrative business advocated by the company
Allan, former chairman of Vicat, also involved in pyramid schemes like Vicat crypto888 and brilliant carbon. According to the communication in January 2015, I saw that Allan and ignatova had a dispute, and ignatova thought he was "betrayal" and "disloyal".
1. Model and specification: ккд— 700 (px-700 / 130) feed mouth 700 mm
2. Feed and discharge particle size: feed particle size: & lt; 550 mm; Ore size: 100-160 mm
3. Type: suspension shaft type
4. Transmission mode: the motor is decelerated by V-belt pulley and connected to the transmission shaft by elastic coupling
5. Maximum lifting capacity of crushing cone: 160mm
6. Eccentricity: upper eccentricity: 21.61mm; Lower eccentricity: 33.37 mm
7. Motor model jr127-8, 130 kW, 735 rpm
8. Shaft speed: 406 rpm
9. Eccentric sleeve revolution, 140 rpm
10. Proction capacity: when the discharge port is 130 mm, the proction capacity is about 300 t / h
11. Lubrication mode: oil pump
12. Overall dimension: 2800 × five hundred and fifty-five × 4415
13. Total weight: 33706kg. 1. Overload operation of equipment is not allowed, such as too much or too large ore feeding, too small ore outlet, etc
2. The maximum lump size of ore feeding should not exceed 80-85% of the width of ore feeding mouth
3. The adjusting gap of the ore outlet should be within the range of 100-160 mm (the crushing cone is 1:3, that is, the crushing cone rises by 6 mm and the ore outlet decreases by 1 mm)
4. It is strictly forbidden for metal iron and other foreign matters to enter the crusher cavity ring operation. If they enter, they should be stopped immediately for elimination. 1. Check whether there is enough lubricating oil in the oil tank, whether the oil quality meets the requirements, and whether the oil filter is not clean
2. Test the oil pump and check whether there is oil leakage in the oil pump and pipeline
3. Whether the oil pressure is between 0.8-1.5kg/cm2
4. Check whether the oil return is not smooth and the oil flow is unstable
5. There is no looseness in the foundation screw of each part of the machine body and the frame interface screw in the frame
6. Whether the screws, pulley and key of the transmission shaft are loose
7. If there are any materials in the crusher chamber, it must be removed before starting
8. Whether the easily worn parts of the engine body (such as broken cone liner and middle frame liner) are seriously worn or cracked
9. Check whether the funnel is blocked or seriously worn
10. Check whether the hand wheel of oil immersed rheostat in electrical part is at zero position
11. Check the contact condition of motor carbon brush
12. It is not flexible to check the distribution box and operating mechanism
13. Check whether the pointer of ammeter is at zero. 1. Operation method of the equipment
(1) before operation, the equipment must be inspected item by item according to the inspection content
(2) start the oil pump first, and start the motor only after the return oil is normal
(3) pay special attention to the sound of motor and crusher when starting, and stop running immediately in case of any abnormality
(4) start feeding after normal operation of the equipment
(5) ore feeding must be stopped when the operation is stopped, and it can only be stopped when there is no ore in the crushing chamber
(6) stop the oil pump feeding
2. Start up operation sequence:
(1) first check whether the oil immersed rheostat is at the zero position and whether the short-circuit switch is open
(2) press the start button
(3) slowly transfer the hand wheel of the oil immersed rheostat to the starting position until the motor reaches the rated speed
(4) close the short circuit breaker
(5) observe whether the indication of ammeter is normal
(6) the motor shall not be started frequently, and generally it shall not be started more than three times continuously
3. Stop operation sequence:
(1) stop feeding before stop, and stop the crusher when all ores in the crusher cavity are discharged
(2) the operator presses the stop button
(3) turn the hand wheel of the oil immersed rheostat back to the zero position and open the short-circuit knife switch
(4) after power failure without notice or shutdown with load, the ore in the crusher cavity must be taken out to facilitate the start-up after power supply
the crusher is used in the coarse crushing stage. Generally, the feed particle size is larger, and the proct particle size is also larger, usually more than 6 mm (- 6 mm accounts for less than 60%). Their basic feature is that the working parts do not contact each other and keep a certain gap. According to the crushing mode and principle, it can be roughly divided into the following four types:
(1) jaw crusher (also known as Laohukou), which is an old and widely used crushing equipment. The crushing action is that the moving jaw periodically approaches and leaves the fixed jaw. Crushing the ore block between the two jaw plates (mainly crushing) and discharging (falling by self weight) is intermittent crushing. According to the movement characteristics of moving jaw, jaw crusher can be divided into simple swing (double toggle plate) and compound swing (single toggle plate)
(2) cone crusher is a continuous crushing equipment. According to the feed and proct size, cone crusher is divided into circular cone crusher and medium and fine cone crusher. According to the length of the parallel belt B (the gap between the moving cone and the fixed cone) of the crushing chamber, it can be divided into standard type, intermediate type and short head type cone crushers
both rotary cone crusher and jaw crusher belong to coarse crushing equipment, but because the cone crusher works continuously, its proction capacity is much larger than jaw crusher when the feeding properties are the same. The standard type and the short head type are used for medium crushing and fine crushing equipment respectively, while the intermediate type is between the two. Generally, it is used as the second crushing equipment when two-stage crushing
(3) impact crusher, which uses the "free" crushing principle of impact force to crush ore, the ore is crushed in the crusher by the impact of impact plate (plate hammer) and impact plate, and the complex effect of multiple collisions between ore. Therefore, the crusher has the advantages of large crushing ratio, high efficiency and less over crushing. It is a promising crushing equipment
(4) roller crusher. The ore is fed into two opposite rotating round rollers (smooth or non smooth) from the upper part. It is drawn into the crushing chamber by the friction between the material and the roller surface and crushed by the roller. The crushed ore is discharged from the gap between the two rollers by gravity. It is mainly used for medium and fine crushing of medium hard and brittle materials.
first of all, the configuration in the figure above is not the same, the simplest configuration is a box crusher, a feeder, a conveyor
and the configuration is a box crusher, a vibrating screen, a conveyor, the price is not the same
Bluestone has many uses and high market value, but it can not be used directly by mining, but can become high-quality sand aggregate after crushing and crushing. There are many crushing equipment used to deal with bluestone, and mobile crusher is mentioned to be convenient, fast, efficient, time-saving and labor-saving_ Stone chipper. There are four or five hundred thousand and one million quoted prices in the market of mobile stone crushers
the current general classification principle of crushing equipment is based on crushing method, mechanical and structural characteristics (action principle). According to this classification, it can be roughly divided into:
1)
jaw crusher, which presses the movable jaw plate to the fixed jaw plate periodically to crush the materials in it. Both jaws are rectangular. According to the swing form of jaw plate, the jaw crusher can be divided into simple swing and complex swing
2)
cone crusher, the material is between the inner and outer cones. The outer cone is fixed, and the inner cone swings eccentrically, so as to crush or break the material sandwiched in it. The present crushers belonging to this category can also be divided into round crushers with sharp and steep cones for coarse crushing, and cone crushers with gentle cone inclination for medium crushing and fine crushing
3)
roller crusher. In the gap between two opposite rotating rollers, the material is mainly crushed continuously, but also ground. The surface of toothed roller has the function of splitting. Belonging to this category can be further divided into smooth roll surface (often known as roller machine) and toothed roll surface
4) impact crusher. The material is broken by the impact of fast rotating moving parts. This category can also be divided into: (1) fast rotating parts mainly hammer, known as hammer crusher; ② The material is broken by a rotating rigid rod rigidly connected to a rotating disc, which is called cage crusher, as well as the past pounder and the recent impact crusher
5)
grinding machine. The material is broken by the impact and grinding action of grinding medium (ball, bar, gravel or ore block, etc.) in the rotating cylinder.