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  • grindplant 9:35 pm on January 12, 2015 Permalink | Reply
    Tags: limestone, Raymond mill   

    Raymond mill diversified applications in limestone 

    With high-grade calcium carbonate materials abroad, packing into the Chinese market, and promote domestic technological progress, accelerate the rapid growth of China’s deep-processing varieties of limestone, and toward diversification, specialization, fine direction rapidly, expanding to open more applications fields.
    Limestone application:
    1, the most common is the production of Portland cement. After breaking limestone rock crusher, re-entering can reach after raymond mill grinding
    cement raw material requirements.
    2, is used as a filler in the production process of plastics, paints, rubber, paper, ink and so on. Can be processed by Raymond mill limestone powder into 300–3250 project scope, give full play to the role of fillers.
    3, the production of high-grade paper coating grade calcium carbonate products. Fine, superfine and activity of heavy calcium carbonate in the papermaking process is widely used.
    4, production desulfurization absorber. Limestone crushed to 0 ~ 2mm, desulfurization, the final reaction product is gypsum. Machine production of large power plant desulfurization Raymond has been applied by a number of thermal power enterprises, the process equipment mature, high desulfurization efficiency, wide range of applications.
    5, calcined limestone, after carbonation to produce precipitated calcium carbonate products.
    6, for the production of active lime, lime passivation. By lime, limestone calcination active lime production, and post-processing to produce passivated by lime.
    In addition, after the chemical processing of limestone to produce light calcium phosphate, oral calcium, calcium food industry additives, bulking agent, and advanced toothpaste friction agent, feed additives, phosphate, and calcium lactate, calcium gluconate, calcium chloride, calcium carbide (calcium carbide), etc., can be seen from the application of limestone, are required to enter into a powder by crushing after Raymond, and then applied to all walks of life, Raymond deep processing of limestone is significant, while the production of limestone mine in Henan machine Mongolia mill, ultrafine grinder and other equipment the main application object is limestone, limestone accompanied by more industry more enterprise applications, future market machinery equipment Raymond will be broader.

     
  • grindplant 8:32 pm on January 12, 2015 Permalink | Reply
    Tags: dsaf   

    hello,i am gald herer.

     
  • richarder 9:22 pm on January 8, 2015 Permalink | Reply
    Tags:   

    Operating principle of vertical roller mill 

    Mill grinding roller tension by tensioning systems, separators by inverter motor drive, and infinitely variable.
    Is mainly responsible for the polishing of the three pressure roller mounted on the lower frame, by the thrust roller assembly and a hinge member connecting member composition. Three tensioning lever tensioning device produced tensioning frame transmitted by the pressure of three rollers, and then spread the material layer between the roller and the disc, and in the foundation, the tension rod, frame, roller, disc, these components form a force reducer closed annular body. In the vertical roller mill hydraulic system is installed in each of the tensioning rod vibration absorbing accumulator. By the main motor to rotate by the rotational movement reducer disc drive, while the roller is in the friction disc to do around the roller axis of rotation. Disc rotation torque transmitted through the roller frame, and the frame in the circumferential direction of this force to the machine housing.
    Materials produced by DSK1600 three gates and mouth to feed on the disc’s tracks, when the disc rotates, the material is crushed by the rolling motion between roller and tray, is crushed to a certain fineness of the material, with the disc rotation slide outward centrifugal force. The outer edge of the disc has a nozzle ring, where the hot air has a drying capacity, the material drying and blow the top of the finer materials, other materials fall into the larger size of the nozzle ring below the slag discharged from the mouth. By adjusting the nozzle ring at the wind speed, the size can be adjusted amount of slag. Slag discharge port of the material through the lifting device to the mill feeding port material handling involved in the next cycle of the mill.
    Is blown above the material, when it continues to rise to the top of the mill housing provided in the splitter region is separated separator, the separated granular material is passing out of the air flow mill, and coarse unqualified after returning back to the hopper size millstone crushing realization rolling again. Materials generally require grinding into the ground through the updraft and fall and then grinding the cycle several times, in order to achieve a grind fineness of the material.
    Therefore, when using hot gas and drying the wet raw grinding, roll mill would be a highly efficient suspension dryer. One meter above the gas temperature in the wind around the ring has been decreased to 300 ℃ 100 ℃, which is also capable of vertical roller mill grinding MLS3726 one reason climax humidity cement raw material.
    Compared with the ball, the main advantages of vertical cement mill is: a higher grinding efficiency; greatly shorten the process; unit power consumption reduced; abrasive materials under limited pressure.
    Due to the large mill casing, even in the lower flow rate the larger air flow can still be taken when, for this reason, wear and pressure loss caused by the spray ring effect is reduced, resulting in a smaller capacity of the mill can be equipped with a hot air blower .
    MLS3726 similar types of large vertical roller mill grinding using modular replaceable components, namely the roller, directly involved in the grinding disc component is a combination of a number of pieces can be replaced, the grinding member is made of wear-resistant material.

     
  • richarder 9:06 pm on January 7, 2015 Permalink | Reply
    Tags:   

    FAQ during use cement vertical roller mill 

    1, the lack of feed
    When they find a lack of storage should stop feeding material, now lose out if continued risk free feed mill, should feed mill equipment and feed, or make the bed thinning attack rumbling sound, causing damage reducer .
    2, the mill is too large oscillations
    (1) feeding uneven, when the vertical roller mill mixes mostly powder, the load factor within the large mill, resulting in thin material on the disc, and the disc with the roller directly touching, forming a vibration mill; when the mill when the mixture more for lump materials, formation pressure grinding roll is not stable, vibration grinding attack. The way to deal with the granularity of the grinding material is stable, appropriate adjustments grinding feed rate or reduce pressure, to ensure the required fineness of the material premise of proper lower separator speed.
    (2) fitting into the mill, view the metal detector, the magnet separator is not working properly.
    (3) causing damage to the kiln exhaust fans or people shaking mill kiln exhaust gas pressure is high, instability and dust concentration Ambassador mill high temperature thereby increasing the mill load moment should increase throttle opening of the cycle, increasing large recirculation flap into the mill, increased mill personnel a negative pressure, so that the mill work balance.
    3, the production capacity of the mill is too low
    Perhaps the reason is: (1) feed rate is low; (2) grinding pressure is low; (3) Goods fineness too fine; low (4) the amount of wind system.
    With a solution for adding the feed rate or add grinding pressure, lower separator speed, increase the amount of exhaust system. Conversely when the mill’s production capacity is too high, way to deal with the opposite.
    4, the pressure is too big mill
    That should cut the feed at the moment, the survey indicates that the pressure equipment. Perhaps the reason to see it: Because the appearance of the transfer failure indication if the main operating parameters within the normal range of the grinding system, notice the appearance of workers to deal with, mill continued.
    Because feed speed control equipment malfunction resulting in excessive feed into the mill, mill current if there is a rising trend, a corresponding reduction in the volume of feed manual operation, the vertical roller mill and increase the total amount of ventilation, ground current is too large, you can quickly a significant reduction in the separator speed, try to prevent overload jump stop grinding, forming a tough start grinding again.
    Department of ring blocking vents disc; if adopted measures to increase the mill ventilation, reduce output no effect, positive pressure into the mill negative, and the mill is still shaking big, should that stop grinding, clean block.
    Air volume is too low or is not stable, adjust the volume to increase ventilation or corresponding cuts the volume of feed, and called live view system with or without a source of air leakage in the mill. Air volume system drastically changed, perhaps by the inner duct or preheater cyclone fouling material formed by the collapse of the grinding system to increase the amount of ventilation, open big into the mill cold.

     
  • richarder 8:49 pm on January 6, 2015 Permalink | Reply
    Tags:   

    Relevant characteristics of vertical roller mill 

    Operating advantages:
    The rollers are in a lifted position when the mill is started, ensuring trouble-free start-up. This eliminates the need for an auxiliary drive. A control system monitors the machinery and facilitates operation.
    Mill arrangement:
    This schematic illustrates a typical grinding installation. The arrangement is very simple and the operation is correspondingly flexible and reliable. To maintain the appropriate temperature in the vertical roller mill circuit. For example to ensure adequate dehydration of the gypsum when grinding cement-the layout is prepared with provisions for recirculation of hot exit gas to the mill inlet. In case the mill feed is wet slag or includes a significant portion of wet additives, addition heat must be provided, for inentance form a heat generator. Otherwise, if the mill feed is very hot, the mill exit temperature controls a damper for cold air intake.
    Nozzle ring bypass system:
    For slag grinding, a specially designed nozzle ring bypass allow the iron particles to segregate through nozzles without airflow and subsequently be removed by a magnetic separator to minimize wear of the mill internals. One mill, many products,The OK mill efficiently grinds blended cements, with a wide range of additives such as slag puzzolana, limestone and fly ash. Its versatility is demonstrated by the ability to switch between a wide variety of mixes, and to vary the particle size to meet individual needs.
    Particle size distribution:
    Example of adjustment of particle sizedistribution when grinding to the sameBlaine surface. The required steepness of the particle size distribution curve is attained by sdjustment of the separatorrotor speed, the vertical roller mill airflow rate and the grinding pressure, in combination with the appropriate height of the dam ring.
    Optimisation of operation:
    Adjustment of mill airflow and grinding pressure for optimisation of the operatinon, including adjustment of the particle size distribution, can be made immediately. Adjustment of the dam ring, however, requires a mill stop, but only for a few hours. Switching between different types of products, for example from portland cement to slag, only requires easily made operating adjustments. Adjustment of the dam ring is not required. However, if the mill is to operate for a long time with one specific product only it may be expedient to adjust the dam ring to optimise the Residue(%)mill for operation with this specific product.

     
  • Billy D. 11:23 am on January 1, 2015 Permalink | Reply
    Tags: blogs, Facebook, Twitter   

    Why self-hosted blogging is better than Facebook or Twitter 

    On Facebook and Twitter, you get advertising that YOU do not control. On your self-hosted blog, you can choose NOT to run ANY advertising.

    On Facebook and Twitter, every little scrap of date is collected and stored forever to sell to advertisers. On your self-hosted blog, you can be as anonymous as you want to be. And you can choose the same option for readers.

    If you get ticked off at Facebook or Twitter, you do NOT have the option of moving all your content to the other Facebook or Twitter because there IS no other Facebook or Twitter. If you get ticked at the company hosting your blog, you can pack up and move your entire site to a different host.

    Facebook and Twitter can pull your post, or content for that matter, because one person complains about it. Not so with a self-hosted blog. Because if they try that, you can up and move your entire site.

    On Facebook and Twitter you do not own your content. Not yours. On your self-hosted blog, you do. If you are a citizen journalist, you are very concerned about corporate ownership of the media. Facebook and Twitter are corporations.

    You can still get sued over the stuff you post on Facebook or Twitter. Same as a self-hosted site. Because Facebook and Twitter have money, your posts are THAT MUCH more likely to attract lawsuits.

    You can still use Facebook and Twitter to promote your site. Just post links to articles on your self-hosted in status updates and tweets.

    Kim Kardashian and Paris Hilton can sell mentions on Twitter for thousands of dollars. You cannot. You can sell advertisements and collect donations on your self-hosted site.

     
  • Billy D. 11:27 am on December 18, 2014 Permalink | Reply
    Tags: subscriptions   

    On line news is returning to online subscriptions as a way to pay for content 

    From Nieman Lab:

    Harper’s, The New Yorker, the Financial Times, and The New York Times are proving that readers will pay for online access to worthwhile content. Publishers have come to learn, sometimes the hard way, that Facebook and Google wield an unseemly, even dangerous amount of power over their audiences. A publication can be brought to collapse with the tweak of an algorithm, as Metafilter learned last May, owing to such a tweak at Google — whereupon they instituted a subscription/donation model that appears to be working fine. Facebook now consists of a stream of advertisements interspersed with your friends’ wedding and baby photos. Why should this organization have any effect whatsoever on news, politics, or any other serious area of our culture? It should not. There is Upworthy, there is The Huffington Post, there are penny-ante aggregators of every description, flush with venture cash. Apparently Pinterest drives a substantial amount of traffic to news sites now. Considerations of search engine, advertising, and social media optimization are bound to have an increasingly detrimental effect on what the public can read.

    As a reader, I am very eager to pay for better managed, better edited, better looking publications. I do not care to rely on Pinterest, or Facebook, or even Google to learn what I need to know. So it is a great relief to see signs that readers, editors, and publishers are taking back the reins.

     
  • Billy D. 8:52 am on November 10, 2014 Permalink | Reply  

    Advice for citizen journalists: Follow the money 

    Read it HERE.

     
  • Billy D. 10:22 am on November 8, 2014 Permalink | Reply
    Tags: Lens 42   

    New APP aims to make cell-phone citizen journalism more reliable 

    Via NewsOK

    The app, called Lens 42, is one of a number of new ventures launched to help halt the spread of false information on social media — a problem that’s particularly pressing now that 30 percent of U.S. adults report consuming news on Facebook. Increasingly,research shows, people are distinguishing less and less between mainstream and alternative sources of news and information.

    Many companies, like Storyful, Emergent and Grasswire, attempt to debunk or verify stories after they’ve gone viral using a mixture of Reddit-style up-voting, computer algorithms and old-fashioned journalism. Lens 42, however, appeals to those who are posting the news, be they professional journalists or casual observers, to prevent rumors from spreading in the first place.

    Photos taken with the Lens 42 app are automatically watermarked with date, time, and GPS location. The app saves photos anonymously on an electronic map, creating a database of verified pictures that unfolds in real time.

     
  • Billy D. 10:01 am on November 7, 2014 Permalink | Reply
    Tags: Gigaom   

    Authenticity trumps authority 

    From Gigaom:

    There were a number of panels at the Web Summit in Dublin this week that talked about media and journalism, but the one that included VICE News, Time Inc. and Storyful was the discussion that has stuck with me — mostly because of a comment that Storyful founder Mark Little made about the paradigm shift that we’ve seen over the past few years involving real-time social media or “citizen journalism.” Among other things, Little said that “authenticity has replaced authority” when it comes to news, and especially what journalists like to call breaking news.

    That makes for a great sound bite — you can tell that Little used to be a TV correspondent before he started the company — but what does it actually mean? For me at least, it means that many people (not all, of course, but many) are willing to pay more attention to sources of information that they believe are close to an event, rather than to traditional sources of sober, objective second-hand or third-hand information. In this scenario, Twitter and Facebook and Instagram and Snapchat are the platforms that stand to gain, and traditional media like newspapers or even television mostly lose.

     
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