In today"s industry field of mining machinery, grinding machine is the most widely used equipment as for the miners. If you want to get some benefits from the industry field of mining machinery, you should have some basic but useful knowledge about this series machines. The grinding machine consists of a power driven grinding wheel spinning at the required speed (which is determined by the wheel’s diameter and manufacturer"s rating, usually by a formula) and a bed with a fixture to guide and hold the work-piece. The grinding head can be controlled to travel across a fixed work piece or the work piece can be moved whilst the grind head stays in a fixed position. Very fine control of the grinding head or table position is possible using a venire calibrated hand wheel, or using the features of numerical controls.

With the rapid development of the Chinese economy, the equipment of grinding machine will certainly play a vital role in its project territory. Today"s grinding machine of mining equipment industry has walked through the extensive development moment that relied on the cheap labor advantage and the expense of the environment. Conforming to the trends of low-carbon economy, the grinding machine industry is positively exploring the energy conservation and environment protection development path.

Grinding machine is kind of mining machinery equipment that may be used versatile, expedient and maneuverable, especially Hongxing Machinery’s ball mill machines, they always bring you the optimized characteristics.

In recent years, the grinding machine industry has got a rapid development. During this period, the industry of mining machinery has also so many elite companies came to the fore. There have been many new products and new equipment appeared in the market and showing the strong vitality. Henan Hongxing Mining Machinery Co., Ltd is a professional company which produces the mining equipment. The grinding machines our company produces mainly consists of Medium Speed Trapezium Mill, MTW continental trapezoid mill, SCM Super-micro Mill, Efficient crushing-type mills, Reinforced ultrafine mill, LM series vertical grinding mill and Raymond Mill. They all have the optimized structure, excellent performance, long tool life and easy tool changing. They are always vigorous. Since the establishment of the company, he always being at the forefront of the mill technology and even pushing the Chinese mill technology to the leading stage of the world.

Our company has independent import-export right with a special international market department to deal with exporting affair. We have a professional after-sale service faculty to provide considerate and all-around-way service for the customers. Advanced technology content, high reliability, low operation and maintenance cost have enabled our products to take the leading position in the field. Our products have been exported to more than 130 countries and are widely used in global mining and construction industry. Being innovative and perfect is our incessant pursuit, and also our vigor source of energy and harmony. We will continuously create better products and better services, and always bring more value for our customers.

Market demand is the drive and basis of our endless innovation. Rich technical experience and the application of high technology make our products rank a leading place in the industry in technology content, performance, reliability and maintenance cost, etc. We expect your choice and prepare to provide you with heartfelt service at any time.

In the stone production and manufacturing line, the equipment that is relatively frequently used is crushing machine, of which there is jaw crushing machine used for coarse stone crushing, impact breaking machine used for secondary crushing or heavy stone crushing machine for one-time breaking. Sometimes according to the technical requirement, the production line needs to configure impact breaking equipment. For this reason, in this manufacturing line, most of the maintenance work of the equipment refers to the maintenance work of the crushing devices. Only doing this part of job well can make sure the job of keeping the stone processing line in good condition to go well. Next, we will analyze this part of work from the following three aspects:

(1) Maintenance of bearings:

The bearing part is the most easily broken part, in actual use, the wear is relatively big, so it needs frequent maintenance, only by refueling can increase the service life of the bearings.

(2) Daily maintenance:

It is done in order to make sure the crusher is in good state for technology and can put into operation at any time, reduce downtime, improve the utilization rate of pipe, reduce crusher wear and prolong service life; regular and periodic service is necessary and sometimes it may need to be done with an order. An enterprise should correctly deal with the relationship of use maintenance and repair and only use or repair is not allowed.

(3) Lubrication Aspect:

Often paying attention and timely do the lubrication work to the friction surface can make sure the jaw crusher operates normally and extends its service life. The lubricating grease added into the bearing pedestal should be 50-70 percent of the volume and it should be changed every three months. When changing oil, the technician should use clean gasoline or kerosene to carefully clean the runway of the bearing roller. If the toggle plate touches the toggle plate mat, lubricating grease should be injected before the crusher is operated.

When it is necessary, or desirable, to operate a gyratory crusher at discharge settings below the minimum standard, the safe procedure is to fit the machine with a reduced throw eccentric. The crusher manufacturer will be able to advise the operator about these special throws for machines of his make.

If a reduced throw eccentric is installed, the capacity at any given setting will drop off approximately in direct proportion to the reduction in throw. In some cases it is possible to compensate, partially at least, for this drop-off by speeding up the machine. Here, again, the manufacturer will be able to advise the operator as to the maximum safe speed for any particular impact crusher of his line.

In the afternoon of July 24, 2010, the competition for the post about metalworking section chief was held in the meeting room of second floor. It was another milestone that Hongxing Machinery enhanced management and innovation for promoting the development of the enterprise.

Metalworking section is only the position in the production line. However, it is an important position for mining machinery industry. With the increasing production order, the members of metalworking section are also increasing constantly. This adjustment aims at improving the work efficiency and enhancing the customers" response time. Meanwhile, it also enhances the staff management, standardizes the work ticket classification, accelerates the inspection and transport of complete work piece, improves the work efficiency, and thus enhances the whole economic benefits of the whole company. We offer not only products with good quality and competitive price, but also top service and solution.

Since it is established, Hongxing Machinery has been enhancing the management ability constantly, increasing the innovation strength and promoting the corporate image. During the unremitting innovation process, our company insists on the idea that customer is the first. Our success depends on the success of customers. Every time, the innovation will bring the tangible benefits for the customers. We believe that we will create a world-class brand in the crushing and screening industry by our creative spirit and professional skill.

We have many technical experts in domestic crushing and screening field, and possess the powerful ability in developing new products. We regard demands of customers as our motility and endlessly develop new products with high performance, which could satisfy the demands of customers and reach the world level

With the rapid development of market home and abroad, our competitive ability enhances continuously, and our products have been broadly applied in the national key projects. In the course of construction of the national expressway network and the large-sale hydropower station, we offer the self-contained crushing plants lots of whole set of crushing and screening production lines, which could offer concrete aggregate of high quality. While expanding the domestic market continuously, our crushing and grinding equipment such as jaw crusher and ore beneficiation has been exported to Russia, Mongolia, Chile, Middle and East Asia, Africa, etc.

We have perfect after-sale service network. After strict train, the after-sale service engineer could offer customer the rapid maintenance service on demand. Moreover, we have our own foundry plant where lots of spare parts of the crushing and screening equipment are manufactured and many stored, which could offer customers spare parts conveniently. We insist on innovating, improving our equipment and enhancing its reliability constantly. We aspire to be the global brand in the crushing and screening field, and we are fully aware that our success is based on the success of our customers.

Sand is one of the key components of concrete and sand pulp, and it is also the fundamental raw material of civil construction and engineering. It can be divided into natural sand and artificial sand. Natural one is formed in nature condition (mainly from rock weathering). Generally, we call it natural for the rock grain size is below 5mm. Artificial one is manufactured sand, which refers to the rock grain size less than 4.75mm which has been processed and screened by crusher machines. The standard one is divided into three kinds of coarse, medium and fine according the modulus of fineness.

Coarse: the modulus of fineness is 3.7-3.1, the average size is above 0.5mm

Medium: the modulus of fineness is 3.0-2.3; the average grain size is 0.5-0.35mm

Fine: the modulus of fineness is 2.2-1.6; the average grain size is below 0.25 mm.

The modulus of fineness is finer, the sand is coarser. The range of modulus of fineness for regular concrete sand is 3.7-1.6. The medium size sand is better. Or you can mix little fine sand to coarse sand, and the mixing proportion is 4:1.

The grain composition of sand refers to proportion. The space cavity of two same-sized is large, and it will be small under the condition of the proportion of two different grainsizes; it will be smaller if there are three kinds. So, the rate of space cavity depends on the proportion of different grainsize. It can save cement consumption, and increase the density and strength of concrete and sand pulp if the proportion is well.

Hongxing Machinery produces a wide range sand maker or we can also call it vertical shaft impact crusher, with the advantage of low consumption, cost effective, the final product size is shaped well and low iron and dust pollution. Its fineness size can be adjusted, so the sand and gravel proportion is well, which is suitable for providing aggregate to highway, railway, civil engineering, dam construction and concrete batching plant.

This machine is a high-efficiency rock crushing equipment with home and international leading level; the machine is developed by introducing the crushing theory and technology from Barmac Company of America and combining the actual situation of sand making. It is widely used for crushing of hard and brittle materials, such as rock, grinding material, refractory material, cement clinker, quartzite, iron ore and concrete aggregate; and it is especially suitable for the sand and sandstone making for construction and road paving.

In 2010, the sales performance in Hongxing Machinery achieves the great success again compared with the corresponding period last year. As the famous crushing and screening manufacturer and system service provider, in order to enhance the popularity of Hongxing brand and the reputation of the products such as construction waste disposal equipment, Henan Hongxing Mining Machinery Co., Ltd makes concerted efforts and works together in the several respects that organization and management, production control, sales training and service specifications in the new year.

What is the most need in 21st century? It is talents. If a company wants to develop, the most important resources and competitive advantages are the talents. In order to get this kind of advantage, our company provides enough development space and invites the person with lofty ideals to join the company. After many selections, the foreign trade department, the domestic trade department, e-business department, technology research and development department, financial department have accepted some new employees.

The issue with many companies today is that their organizations put tremendous effort into attracting employees to their company, but spend little time into retaining and developing talent. A talent management system must be worked into the business strategy and implemented in daily processes throughout the company as a whole. It cannot be left solely to the human resources department to attract and retain employees, but rather must be practiced at all levels of the organization. The business strategy must include responsibilities for line managers to develop the skills of their immediate subordinates. Divisions within the company should be openly sharing information with other sand maker producing departments in order for employees to gain knowledge of the overall organizational objectives. Mining Machinery manufacturing companies that focus on developing their talent integrate plans and processes to track and manage their employee talent.

We all know that teams with the best people can perform at a higher level. We also know that to deliver topline growth even the best people need to be engaged, developed, and rewarded. Leading organizations know that exceptional business performance is driven by superior talent that’s managed with consistent processes. The supplement of new members makes the sales, promotion, design research and development, cost control and other aspects expand further, and the strength is stronger. The centripetal force, coagulative power and combat power reach to a new height. Thus it is predictable that the company will also appear a new vigorous sight. For all staff, it is the common struggling goal that Hongxing Machinery can develop better and faster and become the No.1 mining machinery brand in China in manufacturing hammer crusher.

It is the most difficult period for China mining machinery industry in the 1990s, this industry started to recover after 1999, loss of business out of the predicament, ushered in the development of historic opportunity. But at present, its technological base is weak, since the reform and opening up, as the market for technology to improve the level of product technology the main way, and face of foreign competitors in China"s investments and the grim situation at the same moment. Experts suggest that China should seize the opportunity to accelerate the development, first in research and technical innovation aspects.

There are two aspects of problem for this industry: First, the overall strength is not strong, the majority of enterprises in scientific research, new product development, technological innovation and business management, energy and capital investment are at a standstill. Varieties of domestic machinery products, especially the key to nation-building much-needed equipment can not meet the requirements, and there is a low-tech products, value-added products is not high, unstable product quality, labor productivity is low and so on. Resulting in  manufacturing enterprises, which produced growth and profit growth did not match. Second, product variety, technology, quality, service, etc. problems led to the actual contribution of the mining rate. The metallurgical and mining, for example, currently there are 1180 kinds of equipment used in China to only 26 percent self-sufficiency, and most low-tech and quality is less demanding equipment, and the remaining 74% still need to import. Domestic high-tech equipment, particularly mobile devices, such as TBM, mining vehicles, excavators, scrapers, etc., and there is a large gap between the imported equipment.

To this end, the experts proposed to increase the innovation approach: First, the jaw crusher manufacturing industry should be taken with foreign companies and professional design institutes to establish different forms of joint, including the formation of groups, unions, the introduction of technology, introduction of talents, at least to fight in a joint project on the design approach, the first intervention and then increase, so win-win situation.

Second, establish and improve the advantages of professional applications laboratory, product, manufacturing process of applied technology research. Laboratory should be a high start, based on the practical; including test theory and methods, test ore beneficiation equipment and scale, and control and detection technology, if necessary, should be the introduction of foreign advanced technology.

In addition, domestic and foreign institutions of higher learning not only is the technology talent base, but also is the origin of basic theory and experimental research for mining machinery, it must use its power, and take different forms of joint cooperation with them.

Cement manufacturing as a procedure and as a big production line has undergone many phases of makeover in current times.

An integrated cement manufacturing process is that prepares the raw mix, feeds it to the pyro-processing system (kiln), and then grinds the clinker from the kiln system into various cement products. Finished cement is stored in large silos on site or bagged for small quantity use.

Crushing process: The raw materials mainly limestone, clay, coke are crushed in the separate crushers and stored automatically into the respective silos.

Storage and Proportioning: The different raw materials are extracted from the silos in the desired proportion through table feeders and conveyed to raw mill.

Raw Milling: The raw mix is ground into a ball grinder at desired fineness to produce Raw Meal, and transported for Homogenizing.

Blending & Homogenization: The raw meal is homogenized in the blending silos, and is stored automatically into a storage silo for feeding to the kiln.

Palletizing & Burning: The nodules are made into a nodulisor and charged into the kiln for burning. The clinker after discharge is stored in the clinker yard through deep Bucket Elevator.

Clinker/gypsum crushing, storage & proportioning:

Clinker & Gypsum after crushing stored into the hoppers and extracted in the desired proportion with the help of table feeders and transported to the mill Hopper.

Cement Grinding: The clinker & Gypsum mix is ground to produce cement.

Storage & Packing: The cement is stored into the cement silos and aerated, tested and packed for dispatch.

Cement manufacturing plants:

Cement manufacturing plants should be include high efficient separator which has such characteristics as low energy consumption, cooling and drying, high availability, relatively low capital expenditure, high selectivity, and, proper product separation.

Hongxing Machinery is a famous and professional crushing and grinding machines manufacturer in China, and offers various types of crushers, screens and grinding mills for cement manufacturing lines in USA, Russia, Brazil, Kuwait, Pakistan, Ghana, Korea, India, UAE, Bangladesh. The development way depends on the concept and the good product comes out of the good faith. Our company also designs cement manufacturing process according to the layout for cement factories. Hongxing Brand is a "China Famous Brand" for reliable and stable quality. We firmly believe that we can get sincere repayment with our sincere dedication.

Cement Grinding Mill

Cement Crusher

Coal Mill in cement plant

Vertical Cement Grinding Mill in cement plant

Ball mill used in cement industry

Gypsum powder production line

The vertical mill is a kind of mill equipment which is widely used in cement chemicals, coal, electricity and other fields. With the advantages of small footprint, low power consumption, small noise, simple process, layout compact, combined with crushing, drying, grinding, classifying as a whole, it has become the preferred equipment for milling cement raw meal in the modern cement production factories.

The world"s first vertical mill was developed by Loesche Company from Germany, who had the mature design already in the year of 1925. At present, the largest one - LM63．4, has a capacity of 840 TPH, with the millstone diameter of 6.3mm, the power of 5600 KW and is equipped with 4 rollers.

The current abroad manufacturers mainly include Loesehe Company, Fuller Company, UBE Company, FLS Company (Atox Mill), KHD Company (RM mill) and Pfeiffer Company. The domestic manufacturers have a relatively small amount, whose R&D and production are still in the developing level. However, compared with international brands, the domestic brands have some unique characteristics, which are better suited to the domestic market.

Compared with other grinding equipment, this machine has the following features.

1. High efficiency of grinding. Using the principle of material bed’s crushing and squeezing, the material is rolled, cut, impacted in the mills; the airflow in the mill can take the grinded materials out timely to avoid excessively grinded; the materials generally stay in the mill for 2-4 minutes. It has the 165% grinding efficiency as the ball mill and the power consumption can be reduced by 30% or so.

2. High drying efficiency. Hot air spray in from the annular gap with high wind speed; there is a large ventilation cross-section in the mill and the air resistance is very small. The materials with 8% moisture can be dried by the exhaust gas from preheater in the end of kiln. If there is a hot air furnace, the materials with 15%-20% water content will be dried. So it has many advantages over dryer machine.

3. The feeding size can be very large and usually can be up to the length as 5% of the roller diameter. The large ball mill’s feeding size can be up to 150 ~ 200 mm. The equipment has superior technical performance and is of high capacity. It has high rate of operation and lower metal-worn than the ball mill.

4. Strong adaptability to grinded materials. It can be used to grind a variety of materials, such as limestone, sandstones (Si02 90%), coals, cement clinkers, blast furnace slags and so on. No matter the differences of raw material’s easy-grinding or abrasive, the equipment can produce qualified products with different fineness and different specific surfaces just by adjusting the internal structure and operating properly.

5. Simple process and compact layout, lower routine maintenance cost. It can be used as open-air setting and can save 70% construction investment than the ball mill.

The biggest business concern for rock crushing machines operators, undoubtedly, has to be crusher maintenance. Being able to properly run and maintain the rock breaker in order to maximize its life expectancy is an essential prerequisite. This will come from knowing the specifications. Being able to understand how much you can do and how to clean the crusher properly are the keys in extending its service life. Simply knowing when things need to be changed or replaced on the crushers will allow for increased life as well.

The development of crusher industry is quite fast, and there is a vast potential for future development in the heavy industry. At present, the popular and leading crusher in the world mostly develops on the basis of America Newell Corporation. The production and development of crusher are closely linked the scrap steel industry. At the beginning, it only handles the light and thin materials. With the development of recognition about it and the appearance of broken steel’s advantage, various standards’ crusher is developed continuously. The range of application is also more and more extensive. It even can handle the scrapped automobiles and some household appliances.

For increasing the service time of crusher, it is necessary to learn some skills of operational maintenance, so as to accomplish the combination of use and maintenance.

There are some methods of maintenance for crusher as follows:

The first is the preparation work before driving.

●To check jaw plate, bearings, draw bar, supporting plate, spring and triangle belt are in good condition; fasteners are firm; Protective devices are complete; there is no barrier around the moving parts and so on.

●To check the bearings have refueled.

●To ensure no materials are in the crushing chamber before opening the crusher.

The start-up sequence is in turn dust collector, crusher, discharging belt conveyor，charging belt conveyor, vibrating feeder and so on.

●To adjust the feeding quantity of vibrating feeder, and increase from small materials to big materials, it is usually controlled the height of materials is 4/5 of the jaw chamber height. In addition, it should be also noticed that the largest particle size of materials is no more than 4/5 of the feed opening width. What’s more, when the feed particle size is continuous and uniform, the crusher can brings into play its optimal efficiency.

Many problems that would occur can be prevented if employees are trained properly. Employees can be trained on one-to-one basis or through a group session. Group sessions are more advisable if a new technique or process has to be imparted to employees. Employee training program should be designed in such a manner that it keeps in mind each employee"s needs and current skill status. Proper training of employees increases their morale, confident in operating the crusher, their efficiency to work and decreases employee turnover which in turn lead to better working machine and an increase in profit over the long run. Employee training is not a one time job rather it should be done periodically so that each person is well equipped with the correct and updated knowledge of operating and maintenance.