Easy Maintenance Hydraulic Cone Crusher

Cone crusher

A cone crusher is similar in operation to a gyratory crusher, with less steepness in the crushing chamber and more of a parallel zone between crushing zones. A cone crusher breaks rock by squeezing the rock between an eccentrically gyrating spindle, which is covered by a wear resistant mantle, and the enclosing concave hopper, covered by a manganese concave or a bowl liner. As rock enters the top of the cone crusher, it becomes wedged and squeezed between the mantle and the bowl liner or concave. Large pieces of ore are broken once, and then fall to a lower position (because they are now smaller) where they are broken again. This process continues until the pieces are small enough to fall through the narrow opening at the bottom of the crusher.

A cone crusher is suitable for crushing a variety of mid-hard and above mid-hard ores and rocks. It has the advantage of reliable construction, high productivity, easy adjustment and less cost in operation. The spring release system of a cone crusher acts an overload protection that allows tramp to pass through the crushing chamber without damage to the crusher.

Features Of Hydraulic Cone Crusher:
1. Three kinds of hydraulic protecting parts (protecting oilcan, locking oilcan and hydraulic driving oilcan) not only protect the machinery, but also can deal with troubles without disassembly the parts.
2. Easy operation, reliable performance and can adjust the finished products sizes automatically;
3. The crushing chamber is specially designed according to particles-layer- pressure principle. The special chamber and the suitable rotary speed improve crushing ratio and capacity, so does the cubic product percentage.
4. If something abnormal happens, such as iron is feed into the crushing chamber or there is a jam in the chamber, the machine will lift up the cover and discharging the materials automatically. This eliminates the trouble of stopping the machine to discharge the material by workers, so the maintenance is easier, the cost is lower than spring cone crusher.
5. The Hydraulic Cone Crusher is adjusted by hydraulic device and lubricated by diluted oil. The labyrinth seal eliminates the defect of mixture between water and oil in the traditional spring cone crusher.
6. The mantle and bowl liner are made by high manganese steel. The special design of crushing chamber and particles-layer- pressure protection can decrease the abrasion, make the service time 30%-80% longer than traditional cone crusher.

Playstation Move 101

Starting this week, the Wii won’t be the only game console touting a motion control system. Sony’s Playstation Move hits stores on Sept. 17, bringing a new range of controllers and an accompanying selection of motion-enabled games to the Playstation 3. We've spent some quality time with the system; since we're guessing you've got questions, here are a few answers.

How is this different than the Wii?

In theory, it’s not. This is Sony’s response to the Wii’s success; Microsoft’s, named “Kinect,” will be out later this year.

But Move is considerably more advanced than the four year-old Wii control system. In addition to a suite of gyroscopic motion sensors, Move can employ head-tracking, voice recognition, and positional tracking of the controller. It’s unquestionably more accurate, more sensitive, and more high-tech...but in the end, it’s all about getting you playing games that have you jumping about in front of your TV.

Like the Wii.

What do you need to get started?

At the very least, you’ll need one Move controller -- the one with the colorful sphere on the end -- a Playstation Eye camera, and a Move-compatible game. Coincidentally, that’s exactly what Sony is offering in its main Move bundle, which includes a controller, a camera, and flagship game Sports Champions. If you want to get the most out of the system, though, budget another $50 for a second Move controller. Some games work best with one in each hand, to say nothing of the two-player possibilities.

If you’re the type who has to have everything, Sony’s also selling what it calls a “Move navigational controller," though it’s really just a trimmed-down Playstation pad that fits in one hand. It doesn’t have motion sensing capabilities, but it is just right for controlling games like first-person shooters. There’s also a charging station that’ll fit two Move controllers, although they also charge over USB just like a regular PS3 pad.

How much is it?

The basic Move bundle -- which we recommend, unless you already have a Playstation Eye camera -- costs just shy of $100. Separately, one Move controller retails for $50, while the optional navigational controller is $30. Most of the launch games are $40.

How do you set it up?

It won’t take long: if you can set up a Wii, you can set up Move.

Tuck the camera either above or below your TV, pair the controllers with your PS3, and, uh, you’re done. Every time you play, you’ll have to do a brief calibration dance -- hold the controller up by your shoulder, down by your side, point it at your belt buckle, do the hokey-pokey and turn yourself around -- but that’ll be second nature in no time.

Why does it have a glowing ball on the end?

For starters, because it looks cool. Of course, there's a bit more to it than that.

The camera uses that glowing orb to pin down the controller’s location in 3D space. It lights up when the controller’s in use in a color that will best stand out against the background, which helps greatly with its accuracy. Additionally, some games can flash the ball different colors to give you feedback. One thing to note: if you get your body between the controller and the camera or do anything else that obstructs its view of the glowing ball, you’ll confuse the system.

How well does it work?

Remarkably well. If you’ve been disappointed by the Wii’s sensitivity with sword-fighting games like Red Steel, Sony’s system is what you’ve been waiting for. Compared to the Wii, it’s seriously impressive how sensitive Move is to even the smallest of motions. There’s no perceptible lag, and none of that characteristic wobbliness of the cursor you see on the Wii. In short, Move is the real deal; it delivers on the promise of motion control in a way the Wii has never managed.

ball mill

Rugby Cement – ball mill drive shaft recovery0comments

Following a journal failure on a 40-tonne/hour cement ball mill at RMC’s cement plant in Rugby, Metalock Engineering UK, Coventry orbitally machined the badly scored shaft to clean up enabling a new white metal bearing to be fitted and the mill returned to production with minimum disruption.

The Rugby Works ball mill had been operational for over 35 years and was due for replacement, indeed the new machine was on order, but the journal failed before the new mill was due for delivery. The mill is the last on the production line and blends and grinds clinker and gypsum together with other additives to make cement. As production could not be suspended until the new mill arrived, the Rugby Cement management team called in Metalock to discuss the situation and a possible solution.

Metalock’s recommendation was to orbitally machine the 1200mm diameter, 600mm long journal and remove sufficient material to clean up the shaft. This was accepted and following removal of 3mm from the diameter, the mill was re-assembled using a new white metal bearing to suit the revised shaft dimension.

Orbital machining involves having the cutting tool revolve around a stationary shaft. To achieve this at Rugby Cement, the inner bearing ring of the orbital turner was attached to a temporary bearing housing on the ball mill casing with the outer bearing supported on a temporary shaft extension. The rotating cutting tool head was driven via a hydraulic motor.

Orbital turning is just one of the services Metalock offers as part of its on-site machining capabilities. Others include milling, grinding and boring, all using specialist portable machine tools that the company has designed and built. This latest application demonstrated Metalock’s ability to provide solutions in emergency situations and enable a customer to resume production quickly and efficiently.

Commenting on the Metalock operation Julian Ward, Plant Maintenance Engineer at Rugby said that they knew the mill was reaching the end of its life but hoped it would remain in production until the new one arrived. “It didn’t, but Metalock’s expertise helped us out of a spot and got us back into production with minimum delay and disruption”, he added.

In a typical ball mill orbital turning operation the inner bearing ring of the orbital machine is attached to a temporary bearing housing on the ball mill casing with the outer bearing supported on a temporary shaft extension.

White House Defers To Pelosi On Tax Cuts

President Obama’s aides say the White House is trying to take a step back and let Democratic leadership figure out the best way to handle the question of the Bush tax cuts.

The president made his preference clear, and he’ll keep helping the Democrats on the stump with the rhetorical definition of their party versus the Republicans. A White House aide said it’s possible Obama might talk about the tax cuts issue during his Cabinet meeting scheduled for tomorrow.

Democrats are huddling tonight with members to see what sort of bill they could support so close to the critical midterm elections.

An administration official said the legislative affairs team is consulting with Speaker Nancy Pelosi’s office to be of assistance where they can. The aim is to craft a bill which helps vulnerable Democrats but exposes the Republicans, the aide said, adding that’s not as easy as it sounds.

When Freshman Rep. Gerry Connolly, for example, says he’d be okay with a temporary extension of the tax cuts for the middle class and the rich, that complicates things, the aide said. (Connolly (D-VA) represents one of wealthiest districts in the nation. He’s said he gets Democrats’ arguments about just the middle class, but he also wants to help his own constituents.)

But the White House aide said word on Capitol Hill is that Democratic staffers are trying to come up with something that puts more spin on the ball, perhaps by creating a new tax bracket for millionaires. “They are trying to figure out something along those lines,” the aide said.

ball mill 

Jaw crusher design and maintenance Introduction

In the mineral processing equipment inside, crushing machine is mainly used to crush ore preliminary materials, which work environment is bad, therefore its constituent bodies need a certain amount of optimization and enhanced, should have the necessary knowledge in order to maintain efficiency in production to improve and equipment stability.

As the jaw crusher set by the dynamic E and E constitute the work of the chamber formed under enormous crushing force and friction materials, easy to wear bad, in order to protect the jaw, Hongsen Mining moving surfaces E and E be installed wear of the liner, this liner is also known as broken boards. Broken plates are usually made of tooth surface, and broken plates tooth peak angle 90 ° ~ 120 °, its size has been broken by the fragmentation properties of the materials and determined, breaking bulk materials, the angle should be bigger; broken small piece of material, the angle can be smaller. Pitch depends on the product size, usually get about equal to the width of the discharge port, the high gear ratio with the preferred pitch of 1 / 2 to 1 / 3.

Work, the broken plate wear rate under the two parts is not the same, lower wear faster than the upper, broken plates in the jaw crusher work, direct contact with materials to withstand the great crushing force and friction materials, broken board lifetime is directly related to jaw crusher efficiency and production costs, therefore, to extend the broken jaw crusher plate life is particularly important. E-board to enhance service life can be broken breaking design, material selection, assembly and use of process improvement and other considerations.

At design time, dynamic E and E of the broken board should be set teeth on the tooth peak valley. Thus, when breaking materials in addition to compression, there are bending and breaking of materials easier. To enhance the life of broken plates, small and medium sized crusher broken down into a board design symmetrical shape, a U-turn immediately after the Department of wear use; large jaw crusher broken board designed a few pieces of each symmetry to be worn exchange use the broken board. Broken plate white cast iron materials can be used. Large white cast iron hardness, good wear resistance, the source is easy and cheap; drawback is brittle, easily broken, short life.

In order to improve the life of broken boards, materials with more than 12% manganese steel manganese better common is ZGMn13. Manganese steel toughness, although the hardness is not high (about 210HB), however, because a cold hardening characteristics, under pressure and will continue to be strengthened, so continue to wear it at work continued to strengthen until the wear and tear can not be used to was scrapped. . Manganese steel casting broken board after going through the tough water treatment, water treatment operations generally tough and quenching the same, that is broken is cast out of manganese steel plate heated to 1000 ~ 1100 ℃ in the water after the rapid cooling. Ren treated water can be uniform microstructure, the microstructure and to fixed to avoid the use of the natural deterioration of the phase change not needed. Manganese disadvantage is more expensive, but life, cost, general considerations, ZGMn13 than the white cast iron long life, low cost.

Assembly, the broken plate must be securely attached to E-board, should be pad level between the two, broken plates and the jaw between the use of soft metal (such as lead, zinc, etc.) for gaskets and bolts tightened. Crusher work, broken plate should not be loosening, or easily broken or worn broken plate, reducing the life of broken plates. Therefore, the assembly must be installed, broken plates, thus extending the life of broken plates.

In the production process, broken plates and materials directly, broken very great, especially when broken material hardness greater, leading to installation of bolts broken plate vibration, nut loose, so that broken plate wear and greatly increase the noise, severe broken off or broken plate to equipment downtime, affecting the normal production. In this situation, just before the start tightening bolts, nuts, can not completely resolve the problems, according to the actual situation on site concrete analysis of concrete, practical ways to methods to solve the problem. For example, you can use spring anti-vibration device to resolve broken loose at work in the loose board, thus prolonging the life of broken boards and improve efficiency.

Specific approach is to use spring anti-loose bolts and self-made compact device, which from the inside spring cover, spring, spring cover is composed of outside, to wear the device in the bolt tightening nut, nut because spring is compressed to a certain degree, have a very strong vibration effect produced by the tremendous force of the bolt broken loose by the spring tension automatically power up, so loose bolts Bu Zhiyu, thus extending the life of broken plates, to increase productivity. In short, the process can be used for specific situations to find ways to solve specific problems, to prevent the broken plate loosening, wear increased, broken, etc., thus extending the life of broken plates, reduce costs and enhance efficiency.

Best Colleges 2011

This year, Harvard University regained sole possession of the top spot in U.S.News & World Report's Best Colleges 2011 rankings of national universities. Last year, Harvard and Princeton University tied for first, but Princeton fell to second in the 2011 rankings of these large, research-oriented institutions. Williams College can once again boast that it's the nation's top-ranked national liberal arts college —a category of schools that place a higher emphasis on undergraduate education—as it ranked a spot ahead of fellow Massachusetts liberal arts school Amherst College for the second consecutive year.

More from USNews.com:

Full National Universities Rankings List

New Sites Empower Students to Create Their Own Scholarships

College Rankings: Premium Content

This marks the 27th year that U.S. News has published college rankings. Though the top-ranked schools garner much acclaim, the rankings aren't produced simply to benefit students who are considering attending institutions like Harvard and Williams. U.S. News uses its array of college data to provide insight to students of various academic and socioeconomic backgrounds. There is a list of the best schools for B students, rankings of historically black colleges and universities, as well as rankings of the most diverse national universities. And though the worst of the financial crisis seems to have passed, finding value in the increasingly expensive world of higher education is still one of the most important — if not the most important —factors in choosing a school. To meet that need, U.S. News has compiled best value lists for national universities and national liberal arts colleges, which rank schools based on the average cost of attending — after need-based grants are taken into account — relative to their academic ranking.

The National Universities and National Liberal Arts Colleges lists are just two of several sets of rankings that are a part of U.S. News's evaluation of Best Colleges. Regional colleges and universities, which tend to draw heavily from their local area, and tend to have sparse doctoral program offerings, are ranked separately. Villanova University, Rollins College, Creighton University, and Trinity University are the top-ranked Regional Universities — schools that offer degrees up to the master's level and were ranked as "Master's Universities" in the past — in the North, South, Midwest and West, respectively. The top-ranked Regional Colleges — schools that offer bachelor's degrees and were classified as "Baccalaureate Colleges" in previous rankings — are the United States Coast Guard Academy in the North, Ouachita Baptist University in the South, Taylor University in the Midwest, and the United States Air Force Academy in the West.

Though California's public educational system is plagued by financial unrest and budget cutbacks, two of the state's schools are ranked as the top public national universities. The University of California-Berkeley, which is the 22nd ranked national university, is the top-ranked public school, followed by the University of California-Los Angeles. Rounding out the top five publics: University of Virginia, University of Michigan-Ann Arbor, and the University of North Carolina-Chapel Hill.

Though schools at the top of the rankings deserve praise for their sterling academic standards, they shouldn't receive all of the credit. U.S. News asked college administrators to name schools they believe to have made sharp improvements to their academics and campus facilities. Based on the results, U.S. News ranked the top "Up and Comers" across several categories. The University of Maryland-Baltimore County was determined to be the fastest-improving national university and Hendrix College earned top billing for National Liberal Arts Colleges. The best up-and-coming Regional Universities are Wagner College in the North, Elon University in the South, Butler University in the Midwest and Abilene Christian University in the West.

Jorge Antonio/iStockPhoto

1. Harvard University
City: Cambridge, MA

Total Enrollment: 19,411

2010-2011 Tuition and Fees: $38,416

Application Deadline: 1/1

Jeffrey MacMillan for USN&WR

2. Princeton University

City: Princeton, NJ

Total Enrollment: 7,592

2010-2011 Tuition and Fees: $36,640

Application Deadline: 1/1

Jeffrey MacMillan for USN&WR

3. Yale University

City: New Haven, CT

Total Enrollment: 11,593

2010-2011 Tuition and Fees: $38,300

Application Deadline: 12/31

©Columbia University

4. Columbia University
City: New York, NY

Total Enrollment: 24,230

2010-2011 Tuition and Fees: $43,304

Application Deadlin

What is a Ball Mill?

Cylindrical ball mill  is designed with a ball milling system for thermal power plants using conventional materials, it features strong resistance to wear and long service life. Our casting products strictly in accordance with enterprise standards Q/SHT003-1998 production, product quality supervision and inspection by the province to pass the test product, and a number of indicators over corporate standards.
Many types of ball mills, grinding coal by working parts can be divided into three types of speed, that low-speed mill, pulverizers and high-speed mill.
The working principle of ball mill: ball mill is a horizontal cylinder rotating device, outer gear, the two positions, lattice-type ball mill. Material from the feed device into the compound by air evenly into the mill screw shaft first warehouse, the warehouse there are ladder liner or corrugated liner, built in different specification steel balls, steel ball cylinder rotation produces centrifugal force brought to a certain height after the fall, produce severe impact on the material and abrasive. To coarse grinding of materials in the first position after the board by the single compartment into the second warehouse, the warehouse lined with flat lining, steel ball inside, the material to further grinding. Powder discharged through the discharge grate plate to complete the grinding operation.
Purpose and scope of Ball Mill:

Ball mill is a ball mill, is the material being broken, and then smash the key equipment. Coal ball mill can be dry or wet grinding.
Ball mill is broken and ground into a pulverized coal machinery, it is important equipment pulverized coal fired boilers. Coal grinding process is broken and the surface area of coal is increasing process. To add a new surface area, must overcome the binding force between the solid molecules, and therefore the consumption of energy. Coal grinding mill was made of coal, mainly through the crush, crushed and ground in three ways. Process in which crushed the energy consumption of most provinces. Pulverization process is the most cost energy. Various mill in the milling process are both the above two or three ways, but mainly depends on what kind of mill type.
Structural characteristics of Ball Mill:

 Ball mill by the feeding part, discharging the Ministry Rotary Department, the Department of transmission (reducer, small transmission gear, motor, electric control) and other major components. Hollow shaft with steel casting, lining Replaceable, slewing gear hobbing by casting process, the body inlaid cylinder liner wear, has good wear resistance. Ball Mill smooth operation, reliable work.