2013年1月13日星期日

Six Steps to Extend Use Time of Vibrating Screen


Vibrating Screen should be run unloaded, we shouldnt feed it until the Vibrating Screen runs smoothly. It cannot be stop until there is no material on the surface of Vibrating Screen.Henan Hxjq machinery co., ltd is a famous manufacture of crushing and screening equipment in china, which is specialize in producing medium-sized and large scale Crusher, Sand Making Machine, Circular Vibrating Screen, Mill, Mobile Crushing Station, etc.
Taking the large scale vibrating screen as the investigative object, researchers utilizes advanced means of vibration testing and dynamics analysis theory, and applies the dynamic design method combining theory modeling with experiment modeling to the dynamic design process of large scale of vibrating machines. Using analysis technology of finite element, the mode parameters and the mode shape of the vibrating screen’s prototype are obtained primarily. Then according to these parameters, design structures are modified elementarily to be used as the design basis of the physics experiment model and the main reference about how to dispose the experiment measuring point.
The correct use and reasonable maintenance of vibrating screen will help to extend the service life of the vibrating screen. Therefore, in addition to correct operation that is in strict accordance with the instructions, the following details also should be paid attention.
1. the operator and the users should learn more about the basic structure and working principle of the vibrating screen, conduct frequent inspections and regular checks, gain experience and collect operating datas and record them.
2. before dismantlin the transportation fixed plate, it is not allowed to open the vibration motor. If the transported fixed plate are not dismantled before the startingup of the machine, it may result in damage to the equipment and vibration motor, even the personal injury.
3. every time the operators start the vibrating screen, they should check the screen to make sure that the screen is pressed and smooth and the beam ring screws are properly tightened. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like flotation separator, Henan Hongxing is always doing the best in products and service.bucket mixer: http://www.hxjqchina.com/product-list_39.html
4. in addition, the operator should carry out the necessary checks, focus on the lubrication of each lubrication point and whether each connection piece is loose and the moving parts are out of nimbleness and ensure the necessary gap between all moving parts and the fixe parts. And after the vibrating screen operates for eight hours, the operator should re-tighten all the fasteners of the equipment.
5. when the vibrating screen is started, it should be in operation without load. After the vibrating screen is in smooth operation, the operator can gradually begin to feeding. Before stopping the machine, the operator should stop feeding. The machine can not be stopped until the materials in the machine are discharged out completely.
6. if there are unusual circumstances when the vibrating screen is in running, there is the need to repair or conduct routine maintenance.
Testing technology of vibration is used to found the experimental model with multiple testing points to obtain the mode parameters and the mode shape of the structure. Based on sufficient analysis of testing data, vibrating displacement field and any other dynamic characteristics are obtained .So the stress field is obtained indirectly. Modifying the model of theoretic analysis and the structural dynamics can be on the basis of these dynamic parameters In this way, the shortage of the traditional static design method can be settled well. In this investigated subject, on the basis of the vibrating screen’s working principle, the kinematics of the materiel on the screen surface and the dynamics of the vibrating screen are analyzed in detail. Consequently technical and structural parameters of the prototype of the vibrating screen can be confirmed. Based on the destroying mechanism of the vibrating screen, the principle of choosing materials for the structural pieces of the vibrating screen and which kind of metal materials is apt to the structure of the vibrating screen are determined.

Experts Generally Expound Beneficiation Process


Iron ore beneficiation process due to the influence of the ore itself properties and production processing size requirements, secondary fine grinding equipment not cone crusher belong to, iron ore cone machine can provide more small product size, but also in quality of product suitable for a complete set of production line to cooperate.
Before the ore beneficiation process, the beginning stage of the test work is the most difficult. The research on the composition characteristics of the ore materials can help experimenters faster and more safely choose the beneficiation method and process. At the start of the study in the laboratory stage, it is best to adopt the effective methods in industrial production. When the sorting indicators are not satisfying, it is worth the potential of new technology to develop applications.
The first step for processing the ore is the crushing process, grinding process and the related sieving and grading operations. For most of the ore, the purpose for crushing and grinding is to achieve the dissociation of the mineral particles monomer. If the ore needs to be finely ground, any conventional method or process can be used to crush the samples into the feeding size of the laboratory grinding machine. Conversely, if the mineral ore gathers sufficient amount of particles with coarse particle size, the gravity concentration is very necessary. The crushing and grinding processes should adapt to the sorting process. In addition, the over crushing phenomenon should be avoided.
If the useful mineral particles are too coarse and there is great density difference compared with the gangue, you should firstly consider the gravity concentration. The most commonly used gravity concentration equipment is the heavy media beneficiation machine, jigger and the shaker. Only some sand deposits may use the long chute centrifugal concentrator, the cross-flow belt chute and other fine gravity concentration equipments. The entire process is based on the gravity concentration. In addition, in order to reduce the influence of the particle size and choose different devices according to the different granularity, the grading operation is very necessary before the gravity concentration. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like mobile crushing station, Henan Hongxing is always doing the best in products and service.iron ore concentration plant: http://www.crusher-machine.com/n137.html
Flotation can be seen as a universal principle. Almost all industrial minerals can be recovered by flotation. The separation efficiency for the symbiotic mineral is also not comparable. For the ores which are difficult to depend on the gravity concentration, the flotation test should be arranged. The scope of application of magnetic separation is very easy to make a clear judgment according to the magnetism of the minerals and the magnetic tape granularity. For example, the wet weak magnetic field magnetic separation method is mainly used for the recovery of magnetite and the pyrrhotite.
To sum up, the technology indicators and the level of economic indicators of the dressing plant are depending on the crushing process and grinding process. So each beneficiation workers must take seriously the grinding process and grinding equipment to minimize the cost of crushing and grinding.

Crusher is the Most Equipment for Mining Machines


The most caring question of the customers is just the material, efficiency and using life of the impact crusher, and how much economic profit the mining machine can bring in to the customers. so we should pay much more attention to the research of the performance characteristics of the impact crusher, and then the following question is that what kinds of aspects of the impact crusher should be improved at this right minute.
In order to reduce the occurrence of droughts and floods, the China government issued a series of policies and measures to strengthen the protection of the environment in the whole China; meanwhile, make the construction of water conservancy and hydropower engineering according to the specific circumstances to provide not only water, electric energy to the economic construction in the region, but also play a certain part role in local droughts and floods.
Currently, large hydropower projects have been built in China is Three Gorges Project, and the large-scale projects hydropower station in the construction are Xiluodu Hydropower, etc., which will provide support to China's economic implementation as well as play a major role to the protection of droughts and floods in China. Of course, the construction of water conservancy and hydropower project can not do without the support of raymond mill and stone breaker, etc. from the crusher machinery industry. Currently, the mining machinery industry is all in intelligent from design to production, from sales to after-sales service, and the mere role of human is reduced in the production process and replaced by machines and computer. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like China mobile crushers, Henan Hongxing is always doing the best in products and service.cylinder rotary kiln: http://www.crusher-machine.com/n231.html
In order to achieve a breakthrough development, any industry can not be separated from the contribution of science and technology, which naturally includes the mining machinery industry. The mining machinery industry is designed to provide mining machinery industry branch of mechanical equipment, and crusher is the most important branch or classification of mining machinery.Since the birth of the first crusher, people continued to make technical improvements, which directly contributed to the more and more types of crusher industry, more and more advanced technology, and increasing production efficiency.
The manufacturing industry of the impact crusher should strengthen the ability to research on the performance characteristics of the impact crusher in order to produce much more products in one situation of low energy consumption. And at the same time the quality of the finished products made by impact crusher can be higher and higher, which can satisfy the different requirement of the customers at a high level. This is one way to cater to the principle of the state which advocates the demanding for the lower energy consumption and energy saving.

Domestic Mining Machinery is Under Reform


At present, market competition is getting more and more intense, domestic mining machinery are undergoing a period of adjustment.As we all know, crusher industry is the one of the most important industry in national economy.Therefore, some large enterprises began to change management model and marketing model, set up their own sales team and management team, in order to walk a new path of development.
The jaw crusher is mainly used for rough breaking or middle breaking stage of rigid materials. In recent years, with the development of China's machinery manufacturing industry, the continuous progress of the manufacturing process makes mining machinery gradually showing its intelligent, large-scale and other characteristics. As a professional R & D and heavy equipment manufacturing company of all kinds of crushing and screening equipment, , Hongxing has been committed to intelligent and efficient crushing and screening machine of research and development. The large C Series jaw crusher is the company's new work, which can be used in multiple areas in the industry, and is the well-known large-scale jaw crusher models in the industry.
The cone crusher is the main model in the current beneficiation crushing equipment. Currently, almost all domestic crusher manufacturing enterprises have involved in R & D and manufacturing of cone crusher, which also makes cone crusher showing intelligent, efficient, large, new and other features. Cone crusher plays an important role in beneficiation stage, mainly for coarse crushing and general crushing stage of mineral raw materials. The cone crusher is favored by many mining companies due to its crushing efficiency, unique structure, as well as efficient breaking rate. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like Rotary dryers, Henan Hongxing is always doing the best in products and service.circumgyrate kiln: http://www.crusher-machine.com/n231.html
With the new changes in the economic development and the needs of the industry, crusher manufacturing industry is also undergoing change in China. In recent years, new crusher emerging, for example, the jaw crusher is toward the development of large-scale, intelligent direction, vertical impact crusher is toward functional diversification, expanding the scope of applications, while cone crusher is toward the hydraulic technology, multi-cylinder cone direction, so we can say that China’s crusher manufacturing industry is undergoing new changes.
In the new decade of the Eighteenth CPC National Congress, the government will speed up the infrastructure construction and mining resource investment which will continue to stimulate fast development in all industries. After the financial crisis, China crushing and screening equipment market will keep faster development following current steady steps. Some experts say that in the future, Chinacrusher industry will expand towards one new breakthrough under series of economic strategy from the government.

Perfect Design Features of Flotation Machine


From the discovery of flotation process distribution and comparison, flotation in the applied research of relevant fields presents a shift in the trend, in recent years the hotspots of the mineral flotation applied research are focused on iron ore, coal and bauxite; on the point of process, reverse flotation is a hot, major research for iron ore and bauxite is the flotation drop silicon and improve quality; in addition, the flotation deinking flotation wastewater treatment is the new hotspot in recent years.
Flotation method is the process of sorting mineral particles according to the physical and chemical properties of the mineral surface differences; it is the most widely used ore beneficiation method. Another important use of flotation is to reduce the fine coal ash and remove fine-grained pyrite from coal.
The pulp mass fraction is an important technological factor affects the flotation machine flotation, the main impact has the following aspects:
(1), the recovery rate. Within a certain range, when the mass fraction of slurry is low, the recovery will lower; pulp mass fraction increases, a corresponding increase in recovery. However, the mass fraction of slurry cannot be too large, such as excessively large, the flotation machine is difficult to inflate in the pulp, but makes recovery rate reduce
(2), concentrate grade. The general rule is that the more dilute slurry in the flotation, higher of concentrate grade is; denser of pulp flotation is, the concentrate grade will decrease more. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like Artificial sand washer, Henan Hongxing is always doing the best in products and service.quarry: http://www.crusher-machine.com/n121.html
(3), the amount of reagent. The flotation reagent should maintain a certain quality scores in pulp will have good flotation effect. When the pulp is darker, pharmaceutical mass fraction will correspondingly increase, that is to use fewer agents, the required pharmaceutical quality score can be achieved, and a corresponding reduction in the amount of per t ore of pharmacy. Conversely, if the slurry is more dilute, the dosages will increase.
(4), coarse flotation. The mass fraction of slurry increased, the pulp density also increased, a corresponding increase of buoyancy, which increased the suspending ability of the coarse and the bubble collision opportunities, it is conducive to the coarse flotation.
With the increased demand of resources, ore resources are developing on the development of low-grade or difficult dressing. Flotation hundred years of history prove that flotation in the treatment of low-grade and difficult dressing is unmatched for other beneficiation methods, people will continue to count on the flotation to face the challenges. In this trend, it is expected that the flotation research will remain focused on the development of pharmaceutical and equipment, the study of the special acting and biological agents, large and new flotation machine, flotation column in the broader minerals, flotation application development as well as detection and automatic control of the flotation process is the future study theme.

2013年1月6日星期日

Detailed Introduction to Stone Crushing Equipment


A full set of concrete crushing equipment mainly includes mobile crushers(also called portable crushers), on-site crushers, and mobile on-site concrete crushers. Hxjq Mining Machinery provides a complete set of portable, mobile on-site and on-site concrete crushing and screening equipment, which mainly involves:
Jaw crusher is mainly used for coarsely crushing the materials and makes preparations for the second crushing. It is suitable for crushing hard and medium- hard materials and not suitable for crushing soft materials. It requires that the water content rate of the materials should be below 10%, otherwise the crushing efficiency will be affected. What should be mentioned is that when the bricks and tiles plants use jaw crusher, two points should be paid attention to. One is that before the materials are sent to the crushing machine, the powder particles should be screened out, thus improving the utility rate of the crushing ability of the crushing equipment. The other one is that when feeding materials to the jaw crusher, the workers should make sure the materials are fed along the width of the materials feeding mouth, and the materials feeding should be even and special materials feeding device can be used when it is necessary. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like magnetic drum separator, Henan Hongxing is always doing the best in products and service.milling equipment: http://www.hxjqchina.com/n123.html
According to the structure, hammer crusher can be divided into vertical, horizontal, single rotor and double rotor type. On the material discharging mouth there is installed fixed screening machine, so that the customers can select the screen with suitable hole diameter in order to control the granularity of the discharged materials according to their own needs. This crushing is suitable for crushing brittle materials but not suitable for hard or sticky materials. The crushing ratio of the single-rotor crushing is lower than that of the double-rotor crushing.
Winnowing hammer crusher is equipped with centrifugal fan on the base of the hammer crusher. With the help of the wind power, it is able to select finer powder materials. It is integrated with powder crushing, elevating and screening and has many advantages such as simple technology and better crushing effect.
In addition, if necessary, we will send professional technical staff to carry out on-the-spot guidance.Our mobile crushing equipment can crush concrete, cinder block, asphalt, brick, limestone, concrete formwork (old catchbasins, concrete pipe, etc.), granite, slag and so on. What’s more, rebar is not a problem, either, as our mobile and on-site concrete crushers can deal with it easily.

Blast Furnace Slag is Produced by Hammer Crusher


Hammer crusher is also used in the ceramic industry, there are certain applications, such as for the crushing of ceramics raw shale. In the working course of hammer crusher, due to the impact and friction materials, which inevitably lead to the wear and failure of the hammer head, liner, grate bars and other parts, the hammer is the most important wear parts, the consumption is great, you need to reserve a large number of spare parts, which not only takes up the funds, but also affects the normal production of enterprises. Therefore, we make analysis for factors that influences hammer wear, and looking for measures to improve the service life of hammer head, which has important practical significance to maintain normal production and improve economic efficiency. The failure of the hammer head of hammer crusher shows on the following aspects: small impact wear and cutting, the combination of erosion wear. Different conditions make different state of wear.
The blast furnace slag is a kind of waste residue that is discharged from the blast furnace when smelting the cast iron. It is a fusible mixture and can be processed with various processing techniques to be precious materials with many purposes.
Now the blast furnace slag has become an excellent energy-saving and environmental-friendly building material and it can be processed as grain slag, slag gravel and swell bead. In addition to be sued for producing cement, as concrete aggregate, road-building material, roadbed material and wall material, it can also be used for producing cast stone, glass ceramics, mineral cotton, ceramics and agricultural fertilizer, so that it is widely applied in many industries such as metallurgy, ship-building, chemistry and construction. To a service-oriented brand integrity, as the professional manufacturer of complete sets of mining machinery, like Magnetic separator, Henan Hongxing is always doing the best in products and service.flotation-cell: http://www.hx-china.com/16.html
As is known to all, the ring hammer crusher manufactured by Hongxing Machinery is very suitable for crushing all kinds of medium-hard brittle materials with weak abradability like blast furnace slag, and what is more, this machine can adjust the gap of the grid section according to the requirement of the customers so as to change the granularity of the discharging materials, thus satisfying the requirements of materials with different purposes. In addition, the ring hammer crusher can be used for crushing fiber structure, elastic and tough broken wood and paper and for crushing the wastes of the asbestos cement in order to collect the asbestos fiber.
Hongxing Machinery is one of the high-tech enterprises in China specializing in manufacturing Raymond mill, crushing equipment and their accessories. In the process of more than twenty years of technical sediment and accumulation, our company ensures the leading position in the mining machinery industry. In accordance with the principle of upright, diligent, grateful and responsibility, our company provides all-round services for our customers home and abroad and helps the better and fast development of the recycle business of the blast furnace slag.
In today’s mining machinery industry, there are many top-ranking enterprises. However, a lot of companies without science and technology research and development team also exist. As a result, when you choose crusher equipment, you must be very careful in the choosing process. Choosing acrusher machine with perfect performance can bring you huge benefits.