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Donnerstag, 5. April 2012

Lubrication Maintenance of Grinding Machines

According to the reason analysis of machine breakdown and the statistical data, the breakdowns resulting from incorrect lubrication account for more than eight percent. As for the fast running mining machines and equipment such as crushing and grinding machines, the lubrication maintenance seems much more important because the machine that has good lubrication maintenance will operate in a better state and in a higher efficiency and it also can extend the service life of the mining equipment. The following is the knowledge about lubrication maintenance about Raymond grinders for your reference:

Improving the lubricating system of the machine is to reduce the friction and wear and tear and improve the working efficiency of the equipment. When choosing the lubricating grease for the devices, several factors such as temperature, speed, workload and environment should be taken into consideration. Generally speaking, the grease is made up of base oil, thickener, stabilizer and additives and other substances. According to the difference of working surface and the working conditions, the maintenance can be divided into fluid moveable pressure, boundary and half liquid film lubrication. The lubricating methods are single and central two types. Usually, the viscosity index, viscosity and temperature coefficient than stick are used for measuring the advantages and disadvantages of the grease. According to its viscosity, it can be divided into heavy, medium and light quality. Professional responsible personnel should regularly, periodically, at fixed point and texture lubricate the Raymond mill.

The form of the commonly used lubricant is solid and oil mist lubricant. The former one refers to the lubricant that makes use of solid powder, film or composite material as the lubrication materials and it can be divided in to soft metals, metal compounds, non-metallic and other inorganic and organic matters these main four types; the latter mainly uses oil and mist lubricating equipment to transform the oil into mist form and transit and spread it into the lubricating parts, and its advantages are effective and high working efficiency, and what is more, it can produce a lot of heat in order to decrease the working temperature of the ball mill and bring with it the grinding materials and light dust particles and reduce the oil consumption.

To meet the trend of modernization development and the needs of international markets competition, our company has been introducing senior management personnel, scientific and research talents, and advanced graduates continually. And we are taking advantages of advanced technology from United States, Germany, Japan and other countries to achieve self-innovation and effective development.

Our company has been adhering to the concept of "people-oriented, customer supremacy, development and innovation". We are able to provide our customers not only the highest quality products at the most favorable price, but also the most reasonable suggestion of equipments, optimum process configuration, and a full range of technical support. In pursuit of bringing customers the most benefits with minimal investment, we have been trying our best to help customers in any case!

Sonntag, 1. April 2012

Optimization of Older and New Mining Machines

A purchaser of a new machine might question the wisdom of optimizing a new machine, but there are many reasons optimization would be beneficial. New commodity machines are reliable, accurate, and well tuned straight from the factory. But the same machine tool purchased by one shop for mold and die making can also be used for high production mill-drill applications, or high accuracy aerospace or medical applications. In order to meet all these requirements and also maintain product standardization, the machines are tuned to “best fit” the variety of applications the machine was designed for. Optimization helps to tailor your machine performance to meet the particular application requirements of your industry. Through specialized tuning and the addition of features, CNC optimization for new machines can capitalize on the mechanical capabilities of your machine. Before attempting the optimization of a new machine tool, check with your machine tool builder to avoid any issues, which may affect your warranty. Also check with your machine tool builder to see if they offer any optimization services.

Older machines are prime candidates for optimization for a wide variety of reasons. Very often these machines are critical to production and costly to replace. As a machine is used, it wears and parts become loose. As a result, an older machine’s tuning and accuracy no longer meets factory specifications. Servo tuning was based on original machine specifications and may be too aggressive for the current machine conditions. This could lead to instabilities, poor surface finish and the inability to achieve machining speeds of which the machine was once capable. Compensations will most definitely need to be readjusted. Accuracy is affected by worn mechanics. Periodic compensation adjustments will keep the older machine’s accuracies to within tolerances. The addition of new types of compensation may be required as your machine ages (e.g., adding bidirectional pitch error or straightness compensation).

Features can be added to the CNC to allow the user to work around some of the mechanical deficiencies of an older machine and still provide optimal performance. Optimization allows your older machine to operate with the best possible performance within its mechanical capabilities. Another consideration for older machines would be a complete CNC retrofit. This should only be considered for machines in good mechanical shape or machines that would be difficult to replace, but the controls and servos—due to their age—are incapable of providing the performance and reliability of which the machine is capable. A thorough assessment of your older machine should be done by a qualified service person before attempting to optimize your machine. Screws, racks and ways need to be in good condition and not excessively worn or damaged. The machine positioning must be repeatable (it does not have to be accurate, inaccuracy can be compensated for, but that inaccuracy must be repeatable every time the machine returns to that position). If your machine is not repeatable, you have a much deeper problem that cannot be compensated for at the CNC level. Do not attempt to optimize a CNC on your own. Seek the advice of your machine tool builder or the CNC manufacturer. Optimization should only be performed by factory trained personnel. With its high quality products such as sand maker and professional Raymond mill, Hongxing Machinery has ascended in the front rank of the world in the exporting of mining equipment.

Sonntag, 18. März 2012

How Traditional System of Stone Pavement Works

Traditional paving stone system is environmental friendly as grass-pavers allow the filtering through of rainwater. The soil below the ground is allowed to drink and breathe. Rain fall is not allowed to run waste. A traditional paving stone is not only aesthetically appealing and enhances the appeal of the garden landscape and the curb but its strength is treble that of concrete or asphalt. A paving stone never cracks or wears out and it is resistant to skidding. The maintenance cost is minimal; it does not store heat and can withstand seismic undulations without showing cracks. The joints are mortals and thus there are no grouts that will crack or chip. A paving stone is ideal for cold climes because of the improved ratio between freezing and thawing. Allowing for a modest down time, the paving stone can be used as soon as it is installed. The paving stone can be set either by hand or machine and the price are modest.

The best part of shopping for paving stone is that one can go online and view all the various designs, colors and shapes. Most of the traditional paving stone are mortar less and the stones are interlocking. This adds security especially in times of earthquakes when the paving stone moves with the lust lines and thus there are no cracks. The individual paving stone comes in many shapes, sizes and textures the colours being suitable for any décor. The use of traditional paving stone is advantageous to permanently mark parking bays, walking zones for crossing, traffic routes and other areas that need to be identified. With the laying of the paving stone system repair of streets become simplified without requiring shut down of large traffic zones or patchwork ugliness.

If the paving stone system is installed properly then shifting, sinking and buckling does not happen. It is best answer for pathways scheduled for walking, cycling or for heavy traffic like trucks and even fork lifters. Most firms give a lifetime warranty for paving stone used for residences. The pavers come are of different textures smooth but not slippery and slightly coarse for the rustic look. Those with fine texture show up the subtle play of colours and designs.

Concrete on the other hand cracks with the weather and is not proof to earthquakes. The strength of a traditional paving stone is three times more than concrete. These can be easily repaired and hardly requires curing time. Repairs leave no scars unlike concrete. In the case of concrete the choice of colours is limited but with paving stone there is a wide range of customized colour and myriad shapes to suit individual tastes. The non-modular paving stone has the unique ability of spreading the load and tension over wide areas bricement paversdging the action between each separate unit This allows it to bear heavy traffic easily without resorting to the reinforcing it with steel as is done with concrete. The traditional paving stone is the answer to giving the touch of class to the great outdoors driveways and pathways sturdy as well as beautiful. With its high quality products such as hammer crusher, Raymond mill, Hongxing Machinery has ascended in the front rank of the world in the exporting of mining equipment.

New Way Analyzing National Income, Circular Flow

The expenditure method: the total amount of domestic spending by consumers, firms, government and foreigners. National income accounting is the process whereby countries attempt to measure these flows. The result of each the three methods is the gross domestic product. An examination of the national income accounts gives an insight into the economy. In reality the households do not spend all their current income. Some is saved. This represents a leakage from the circular flow. In addition to the consumer spending, firms also carry out investment spending. This is an injection to the circular flow of income Biz/auricular flow of income, as it does not originate from consumers current income.

The Virtual Developing Country is a case study of Zambia. There are a series of field trips available looking at different circular flow of incoming issues connected with economic development. This trip is the Copper Tour and this page looks at the Circular Flow of Income. The circular flow of income is a model of the economy showing flows of goods and services and sectors of production between firms and households. In the absence of government and international trade this model shows that households provide the sectors of production for firms who produce goods and services. In return the sectors of production receive sector payments, such as wages, which in turn are spent on the output of firms. This basic flow is shown in the diagram below.

In the real world the government and international trade sectors must also be included. Economic systems are in reality three sector open economies. Consequently there will be additional leakages and injections. Government spending will be injected into the circular flow and taxation will leak from it. Export flows will be injected and imports flows leaked. A full circular flow with leakages and injections is shown below. This model of the economy demonstrates that economic activity is a flow. In actual ct it can be considered two flows, one of goods and services and a flow of money. The size of these flows is an indicator of the amount of economic activity. The circular nature of the flows means that there will be a number of different ways of measuring the size of the flow. Economists maintain that there are three possible ways of measuring this flow with each way looking at a different part of the circular flow of income. It provides data which governments and external agencies can use in a variety of different ways.  As a leading global manufacturer of crushing and milling equipment, we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete stone crushing station. We also supply individual jaw crusher and Raymond mill as well as spare parts of them.

 

 

 

Dienstag, 13. März 2012

Common Financial Jargon in Mining

In the final part of our Mining Financial Basics series, we briefly cover ten common financial terms you might hear around the mine site. This is the final post in the series, and I hope you’ve enjoyed the series and learnt a little about the financial concepts you’re likely to encounter around a mining operation or mining company head office. To finish off, here’s a brief list of some other common financial terms you might hear:

Earnings Before Interest and Tax – this is the most common measure of what we normally call profit. It is total revenues minus total costs, but excluding the costs of paying interest on borrowings or paying tax. Interest and tax are excluded to basically show the net profit achieved before taking into consideration taxes and finance costs. We exclude interest and tax as these costs are not directly related to how profitable or well performing the operation is. They are more like costs of doing business rather than directly telling us how well we are going. EBIT is the most common form of measuring operational profit.

Earnings Before Interest, Tax, Depreciation and Amortization – another measure of profit. This time it is revenues minus costs, again excluding the costs of interest and tax. This time we also exclude depreciation costs (see below) and amortization costs (see below). Again this is just a different measure for profits taking out some additional measures that aren’t directly related to operational performance (i.e. depreciation is more related to capital assets than how well the business actually did).

Depreciation is basically how much the assets of the business decline in value. For example your car will decline in value over time – if you were a business, the amount by which it declines in value each year could be claimed as a depreciation cost. It is recognised as a cost even though no cash is involved. It is essentially a cost item which recognises how much value the company’s assets have lost each period.

Amortisation is the same as depreciation, except it applies to loss or gain in value of intangible assets of the company. Where depreciation applies to physical capital assets, amortisation applies to intangible assets. Intangible assets are those things a company puts a value on, even though there is nothing that physically exists. Intangible assets include things like the value of goodwill, a brand, deferred tax assets, patents, and capitalised R&D - things that make the company worth more in rotary kiln and dryer machine manufacturing even though you can’t actually see them. Amortisation then is recognising the change in value of these assets as either a cost or revenue to the company, which once again is obviously a non-cash item.

Skill and Experience Requirements of Miner

There are few formal education requirements for new extraction workers, although a considerable amount of job training and experience is needed before workers can perform most duties or advance to more skilled positions. Skilled maintenance and construction workers usually need several years of vocational training in their field, while workers in professional occupations need at least a bachelor"s degree.

Workers in extraction occupations usually must be at least 18 years old, be in good physical condition, and pass a drug test. A high school diploma is not necessarily required, but is usually preferred; some companies also require workers to pass a basic skills test. Most workers start as helpers to experienced workers and learn skills on the job; however, formal training is becoming more important, as more technologically advanced machinery and methods are used. Given the increasing complexity of operations and the sophisticated nature of technology used today, employers now demand a higher level of skill and adaptability, including the ability to work with computers and other more complex equipment. As a result, some employers prefer to hire recent graduates of high school vocational programs in mining or graduates of junior college or technical school programs in mine technology. Such programs usually are found only at schools in mining areas.

Because of the unique dangers in mining operations, workers also need extensive safety training. The Federal Mine Safety and Health Act of 1977 mandates that each U.S. mine have an approved worker training program in health and safety issues. Each plan must include at least 40 hours of basic safety training for new miners with no experience in underground mines, and 24 hours for new miners in surface mines. In addition to new miner training, each miner must receive at least 8 hours of refresher safety training a year, and miners assigned to new jobs must receive safety training relating to their new task. The U.S. Mine Safety and Health Administration (MSHA) also conducts classes on health, safety, and mining methods, and some mining machinery manufacturers offer courses in machine operation and maintenance as well. Increasingly, mines use more high-tech tools for miner training, such as machinery simulators and virtual reality simulators. By simulating actual mine conditions and emergencies, mine workers are better prepared and companies can instantly assess a mineworker"s progress and skills.

As workers gain more experience, they can advance to higher paying jobs requiring greater skill. A mining machine operator"s helper, for example, might become an operator, or a roughneck may become a derrick operator. Due to the extreme environment and critical nature of the work, offshore oil crews generally are more experienced than land crews. Many companies will not employ someone who has no knowledge of oilfield operations on dryer machine and ore beneficiation machine manufacturing to work on an offshore rig, so workers who have gained experience as part of a land crew might advance to offshore operations. Positions are usually filled on the basis of seniority and ability. Miners with significant experience or special training also can become mine safety, health, and compliance officers, whose duties include mine safety inspection.

Freitag, 9. März 2012

Extend Crusher Working Life with Spare Part Design

At present, the competition of the crusher manufacturing industry market in st1:country-region w:st="on" China is very extensive, including chemical, mining, construction, water conservancy, metallurgy, coal mining, glass and other industries. With the increasing market demand, the service life of the stone crushing equipment determines the efficiency of project, thus in order to meet the demand of mining machinery manufacturers, our company with high chromium cast iron and low whole magic material which increases the life of the crusher product.

1. The jaw plates of jaw type crusher with great usage and wide applications. Our company use the composite technology combines high hardness, high wear resistance of high chromium cast iron and low combined with all magic, in order to improve the wear resistance of the jaw plate. Mainly used for crushing the medium hard materials, the life is a high-manganese steel jaw plates 2.5 times.

2. The spare parts on the material use the high chromium cast iron, in casting process use the controlled solidification techniques; make use of the compound modifier for modification, grain refinement, increased toughness, improve the morphology and distribution of the carbide, so that the carbide growth direction perpendicular to the wear surface. Heat treatment using the optimal heat treatment process, the casting with high hardness, toughness and great impact resistance. In the gravel area, our company developed a large impact crusher flat hammer, by the user testing, the utilization ratio of equipment improved.

3. The spare parts of cone crusher. After three years of research and development, our company constantly improving technology, adjusting the composition, produces a variety of cone crusher liners. Crushing wall, concave using the modified high-manganese steel to product, due to the change of the cavity of the crusher to reduce the wear, the life compared to traditional materials can be increased by 20% to 35%, the price is cheaper than imported spare parts, the range of cost performance increased.

4. The hammer of composite crusher. Hammer handles using the low alloy, high strength and high toughness; hammer use of the wear-resistant materials, give full play to the advantages of two materials, make use of the composite technology to combine the two together, expanding the application scope of high wear- resistant materials, so that increase the working life.

5. The spare parts of hammer crusher. Cement industry commonly used the hammer crusher hammer made of the vanadium-molybdenum alloy which is the high wear-resistant materials. Its refinement, small columnar grain, spherical carbide so that the performance was further optimized.

Mittwoch, 7. März 2012

What Likely Goes Wrong from Professional Eyes?

Conventional wisdom holds that if one has nothing to hide, one has nothing to fear. The increasing ubiquity of unsleeping electronic eyes demonstrates that we all have something to hide, whether or not we believe it. Much of our daily lives could, when scrutinized without context, appear sinister or eccentric. This lesson has been learned the hard way by a still-anonymous (at time of writing) citizen of a town of France’s Maine-et-Loire region. A camera car operated by Google Street View, photographing the burg in question, happened to catch our man urinating in his front garden. The image has subsequently gone viral.

At this point, the only proper response is juvenile tittering, followed by sympathy. Such misfortune could have befallen any of us. Everybody-come on, we’re all grownups here-has taken relief in a location without a roof. In France, it’s indeed a cornerstone of the culture: This is the nation that gave us the purpose-built outdoor convenience called the pissoire impact crusher and professional sand maker. The sensible course for Street View’s inadvertent victim, who wasn’t the first, would have been to sportingly absorb the ribbing of his friends and wait for the online mob to be distracted by the next theremin-playing cat. Instead, incredibly, he has retained counsel and is seeking to force Google to remove the image. No matter that his face is blurred and that no one who didn’t intimately know the town of 3,000 people could possibly recognize him. He also wants €10,000 ($13,115) by way of compensation, which seems a low price to put on dignity, even for that of a Frenchman.

This appears an elementary failure to heed the Streisand Effect-the law which holds that attempting to suppress online information will inevitably result in its widespread dissemination. (The principle is named for Barbra Streisand, whose efforts to remove pictures of her Malibu home from the Internet made it one of the most famous dwellings in California). Perhaps the plaintiff is playing a cannier game. Before Street View’s car drove past, he was just a middle-aged Frenchman; had he not made a fuss, which is what he would have remained. However, in a world limitlessly willing to confer gratifying and profitable celebrity upon unlikely candidates, he might yet parlay this apparently idiotic lawsuit into chat show appearances, a reality show, and a branded range of bathroom appliances. From village idiot to global village idiot. He may not have known it at the time, but he was aiming at the stars.

Dienstag, 6. März 2012

Introduction to Various Grinding Mills in Mining

A grinding mill is a kind of equipment designed to break a solid material into smaller pieces. There are many different types of grinding mills and many types of materials processed in them. Some grinding mill we often used are ball type mill, Raymond kind mill, high pressure suspension grinding mill, vertical mill and super thin grinding mill. The following are some detailed information about them.

Vertical mill is a kind of advanced mill which adopts top technology domestic and abroad based on many years’ mill experiences. It can crush, dry, grind, and classify the materials. This milling machine can be widely used in such industries as cement, power, metallurgy, chemical industry, non-metallic mineral. It is used to grind granular and powdered materials into powder.

The super thin grinding mill is mainly used in processing powder of mineral materials of metallurgy, building materials, chemical industry, mining, etc. This ultrafine mill can grind non-flammable and non-explosive materials with moisture less than 6% such as Feldspar, calcite, talc, barite, fluorite, rare earth, marble, ceramics, bauxite, manganese ore, iron ore, copper ore, phosphate rock, iron oxide red, slag, slag, activated carbon, dolomite, granite, iron oxide yellow, bean cake, chemical fertilizer, compound fertilizer, fly ash, bituminous coal, coke, lignite, Ling U.S. sand, gold, red mud, clay, Kaolin, coke, coal gangue, porcelain clay, kyanite, fluorspar, bentonite, muddy green rock, leaf wax rock, shale, purple rock, Diego rock, basalt, gypsum, graphite, insulation material, etc.

In order to make the size of molybdenum ore materials as fine as possible before entering into milling machine, the crusher must have an excellent fine crushing capability to reduce molybdenum ore size. To achieve this crushing effect, two grades of jaw crushing machine and one fine crusher (high thin breaker machine) are applied in the crushing process. Two types of jaw crushers are coarse and fine jaw crusher. Tertiary fine crushing machine is the key of the whole production line.

Vibrating molybdenum ore feeder is used to feed molybdenum ore evenly to molybdenum ore crushing and grinding machine. Jaw crusher is used in primary crushing station. It can crush molybdenum ore into smaller sizes. Thus, these small molybdenum ore can be fed into mill such as mill equipment for grinding. Impact crusher is generally used after jaw crusher, and can crush hard stones, not only the molybdenum ore, but also other ores such as copper, bauxite, antimony, Kaolinite, gold etc.

The grinding mill manufactured by our company is of high quality, low price, reliability, easy maintenance and so on. Our grinding mills are designed to bring your operating cost down. If you are interested in any kind of our mill, please feel free to contact us.

GP Series Designed to Meet your Comminution Need

GP Series cone type crusher adopted the first class crusher design and crushing technology. As a result, the GP Series offers a few outstanding features that enable you to work efficiently in any secondary, tertiary or quaternary crushing application. After taking a closer look at the GP Series crusher, you will be sure to find a GP Series cone breaker ideally satisfy your crushing need.

The compact size and low weight contributes to a high crushing performance, making the Nordberg GP Series crushers highly popular world wide. Several thousands of GP Series gyratory crushers are working around the globe today, a testimony to their first-class reliability and versatility.

The whole range of the GP cones enjoy a global Hongxing Machinery pre and after sales product support including process simulation and planning services, and a comprehensive range of OEM wear parts.

The crusher company plans to construct a quarry to satisfy the needs of creating stone materials within Malaysia. Our company supplies the entire crushing plants as well as service.

The complete crushing plant are utilized to crush large rocks into little size or fine sand for construction along with other purposes. The uncooked stones of quarry tend to be mostly lime stones. The project may be the broad heading. The capability of crushing should be up to 800 — 1000 TPH. And its purpose would be to provide the creating aggregates and sands with regard to infrastructure.

Advanced automation, easy adjustment along with a limited number associated with maintenance points help to make the Nordberg Series really friendly for that operator. The automation program helps the operator to obtain the right crusher settings quickly. You need much less human surveillance throughout crushing.

Hydraulic adjustment from the crusher is secure and fast, and can be carried out continuously under mashing load. For support, GP cones could be dismantled completely in the top. Changing of the liners doesn’t need any backing materials because of the machined put on parts.

Continuous research as well as product development has cheated the simple idea of the floating base type design to make sure reliability. The exceptionally large diameter from the main shaft and also the heavy-duty mainframe make sure robustness. Automation is standard of all GP cone crusher, which contribute significantly in order to ensuring the unit’s dependable operation.

For to higher serve Malaysia clients, Hongxing will set up Malaysia office within 2008, if you need to buy jaw crusher or even get cone crusher costs, please contact all of us. We are here to assist your business.

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