Production limitation and halts is implemented in cement industry for the G20 summit

The G20 summit will be held soon, to help the activity of “blue west lake”, a number of cement enterprises in Hangzhou has carried out production limitation and production halts. Recently, many cement enterprises in other place also start to implement production limitation to prepare for the holding of the G20 summit. Enterprises of cement industry repair cement equipment and replace parts during this period, which will ensure the safety production and high operation rate during the production period.

CHAENG (Great Wall Machinery) has casting bases and parts assembly bases which are few in number in domestic industry with large machining capacity and large steel casting manufacturing capacity. Thus our company can provide the complete spare parts of cement vertical roller mill at any time, such as roller, millstone, hub, rocker arm and so on; spare parts of cement rotary kiln, such as tyre, big ring gear, riding wheel, hydro-damper and so on; spare parts of cement grinding mill, such as big gear wheel, end cap, hollow shaft, bearing housing and processing and casting of other large steel castings.

Figure: Machine shop

Figure:Steel Casting

CHAENG has an after-sales service team with excellent technology and rich experience, who provides quick response during 24 hours and arrives the site within 48 hours, providing superior parts and services for customers at all times and places.

Spare parts inventory service

CHAENG has nearly 60 years of large rotary kiln, vertical roller mill and ball mill manufacturing experience. Our company is familiar with mill technology on the market, so we can process the spare parts according to the type of mill and drawing of customers.

In order to ensure customers get needed spare parts in a shorter time, CHAENG has launched “deposit storage” mechanism, for which customers need only pay a small fee to store the needed parts, and CHAENG will provide parts spot supplies for customers. Our company will store the spare parts to allow every customer to get the needed spare parts in time and reduce the warehouse cost, maintenance cost, logistical cost and time cost of customers.

CHAENG has focused the production and manufacture of cement equipment for nearly 60 years. Our company can provide host device maintenance, spare part process and project construction for customers. Welcome new and old customers call for details.

The 5th China-Eurasia Expo---CHAENG(Xinxiang Great Wall Machinery) is Ready

The 5th China-Eurasia Expo will be held at Xinjiang International Convention & Exhibition Center, Urumqi, on Sep. 20 to 25, 2016. This expo is held with the Chinese Government Support, and undertaken by the Xinjiang Uygur Autonomous Region and relevant National Ministries and Commissions. It is an international expo with inviting domestic and overseas guests and merchants.

To be Chinese first-class grinding system service provider, CHAENG will attend this exhibition and will blockbuster launch the latest upgrade Industrial Waste Residue 2.0 Grinding System sample case, Large-Scale Cement Complete Equipment, etc. The booth No. is Machinery & Equipment B District-U5. Hope to communicate and cooperate with you.

In order to be well know and good communication with Central Asia clients, CHAENG is much considerate to specially make Russian Display Board, and arrange the Russian translators to provide the clients the one-to-one service.

Since the company establishment in 1958, CHAENG closely developed and cooperated with the clients from Central Asia and other regions. Based on the principle of different countries/regions customers to the most fitting cement equipment,CHAENG hold the management spirit of “building CHAENG by grinding and service ” to build base of “Industry-University-Research Cooperation” with Henan University of Science and Technology and other domestic excellent scientific research institutions. We developed the Cement Powder Grinding outfits with the high efficiency and energy-saving. The multinomial technologies are awarded with National Patent.

Specially, Chaeng Machinery 4.2 X 13 m double tracks cement grinding mill is the first domestic product to fundamentally solve the congeneric products problem of “On account of excess temperature of bearing bush in discharge end, the machine cannot continuous work”. It is awarded with Patent for Utility Models. Patent Number is ZL201020285841.9.

So far, CHAENG have totally produced all kinds of Cement Ball Mill, Rotary Kiln more than 3000 sets, all kinds of Cement/Slag Vertical Grinding Mill more than 200 sets. These products are popular in all over the country, and exported to overseas market including India, Pakistan, Bangladesh, Indonesia, Vietnam, Kazakhstan, Uzbekistan, etc.

On Sep. 20 to 25, 2016, CHAENG will take the latest R&D achievement to appear in The 5th China-Eurasia Expo. Welcome to discuss and cooperation.

Raw Mill / Slag vertical roller mill technology innovation

Powder concentrator is one of the most important part of slag vertical roller mill (hereinafter referred to as “slag vertical mill”), the function of which is to make qualified finished product after grinding enter into the precipitator through outlet piping of body by steering flow while semi-finished particle (over the specified size) will be threw out and sink under gravity. After leaving the scope of centrifugal force, they will be collected by a collector to return to the mill for grinding once again. Steering flow is formed through wind board, which make the mixture of powder and air from vertical rise to tangential flow and the fineness of the finished product depends on the clearance between wind boards, the angle of the wind board and the speed of the rotor.

1. Facing problems

Traditional wind board is fixed and nonadjustable. The controlled access of the fineness of the finished product produced by the slag vertical mill equipped with such wind board is single and the variety of the grinding materials is limited. The article will introduce a new type adjustable wind board, which make the controlled access of the fineness of the finished product diversified and easy to operate. And can also grind different kinds of materials to make the mill production diversification and bring the users more economic benefits.

Tangential to adjust the wind board or enhancing the rotor speed will produce more fine finished product after separation while reducing the rotor speed or radial direction to adjust the wind board will produce more coarse product; similarly, there is different situation when grind different materials and the fineness of the finished product needed is also different, all which can be settled by technical proposal mentioned above.

2. Improvement plan

Structure diagram of traditional fixed wind board is showed in figure1.

Figure 1: Structure of traditional fixed wind board

Clearance b between wind boards and self-angle α of the wind board in figure 1 are fixed value. Thus, only by adjusting rotor speed or roller pressure can achieve the different fineness of the finished product, which cannot produce the high fine finished product with high energy consumption and serious wear at the same time.

Structure diagram of new type adjustable wind board is showed in figure 2.

Figure 2: Structure of new type adjustable wind board

In figure 2, the new type adjustable wind board is weld on the core shaft of the wind board, and the adjustment to all wind board device can be achieved through the adjustment to core shaft of wind board by adjusting handle and then change the clearance value between wind boards. When the fineness of the finished products meet the requirements, fix the position of the wind board and record the figure on the dial to realize the serialization of fineness value of different kinds materials corresponding to the value of the wind board position.

Specific fixed approach diagram of new type adjustable wind board is showed in figure 3, which is that weld the fixed support to the core shaft of the wind board and after adjusting the wind board, make fixed bolt through the hole on the fixed support and screw it in one of the screwed hole adjusting the position on fixed block (weld on the body on the spot). The advantage of the fixed way is that lock nuts above the wind board will not be loose by the vibration of slag vertical roller mill and cause the position shift of one of the wind board. In addition, screwed hole adjusting the position on fixed block realize the adjusting function of the wind board and make the clearance value between wind boards adjustable.Figure 3: Fixed approach diagram

Figure 3: Fixed approach diagram

3. Reforestation effect

Currently, the equipment has been used on a 5.6m slag vertical roller mill of a building material company in Tangshan at the end of 2013. By adjusting the new type wind board reasonably, vertical mill can achieve or even surpass the design production when grind different kinds of materials. The using effect is good.

CHAENG Will Meet You at the 21st Arab International Cement Conference & Exhibition

Arab International Cement Conference & Exhibition is the largest professional cement exhibition and conference in the Middle East. The 21st Arab International Cement Conference & Exhibition will be held at Abu Dhabi on November 16-18, 2016. At the appointed time, CHAENG (Great Wall Machinery) will attend AICCE with China Building Material Group, China National Material Group, Hefei Cement Research and Design Institute and Nanjing Cement Design Institute. Booth number of CHAENG is H11.

CHAENG will attend with its Green updated GRM series vertical mills, ball mill, energy-efficient rotary kilnand the industrial slag grinding new technology. CHAENG look forward to talking with the world first-class enterprises for the bright future of engineering construction.

CHAENG has researched grinding technology nearly 60 years with the business concept of “building CHAENG by grinding and service”. Our company has cooperated with Henan University of Science and Technology and other domestic excellent scientific research institutions to build production and research bases and developed the full set of efficient and energy-saving cement grinding equipment. A number of technology has won the national patent. CHAENG has been one of the leading enterprises in the field of science and technology research and development.

Professional manufacturing and high-end quality. CHAENG always carries out the overseas marketing strategy of localization research and development, manufacturing and marketing and achieves the good results. Up to now, CHAENG has manufactured more than 3000 cement ball mills and rotary kilns and 200 cement and slag powder vertical roller mills covered all kinds of specifications. Products are sold to all parts of the country, even to India, Pakistan, Bangladesh, Indonesia, Vietnam, Kazakhstan, Uzbekistan, etc.

Slag vertical mill feed means to improve the operation rate of transformation

Slag powder is a superior performance of concrete admixtures, more and more applications to the building materials industry, CHAENG slag vertical mill with advanced technology, excellent quality, perfect service system, more value-added services by many building materials production on the favor,Currently, many of the world-renowned enterprises have introduced CHAENG slag vertical mill to produce slag powder production line.

Today, CHAENG for everyone to share technical innovation of large slag vertical mill.
With respect to the ball mill, the vertical mill can better adapt to the high moisture material slag grinding requirements, however, some companies are using is to remove from the pool of slag as a raw material, the moisture content is too high slag vertical mill will not meet, which appears frequently blocking material into the mill downpipe, material bed forming bad problem. If not improve, it will lead slag vertical mill capacity to reduce energy consumption increases, or even damage to the device.
So, how to transform it?
Solution: The original band inclination, directly into the mill feed downpipe to a vertical downpipe, downpipe outlet will move outside the vertical mill, in the discharge port valve is installed in a horizontal screw conveyor. Downpipe into the material through the screw conveyor inlet under the action of the screw conveyor to force the material to the vertical mill, feed downpipe to avoid direct contact with high-temperature gas into the mill and the mill. Although the mill screw conveyor outlet and the high temperature zone of convergence, but the screw conveyor is a continuous conveying machinery, the use of rotary screw of the screw shaft such that raw materials and the relative motion to achieve the purpose of transportation, and can demand, during transportation the complete mixing, kneading to achieve the delivery of materials to eliminate the high moisture material feed valve is clogged compaction problem in the next. Simultaneously canceled downpipe lock valve, self-locking screw conveyor through wind, reducing the amount of air leakage in the mill.
What specific measures is it?
On the side of slag vertical mill housing erection platform directly into the vertical mill of the original valve is removed, the installation of a screw conveyor, the valve is angled to the vertical downpipe, slag after feeding belt conveyor into the vertical down feed downpipe, and through the new installation of screw conveyor into the vertical mill.
With this transformation, slag vertical mill can easily solve the problem of downtime caused by blockage downpipe, can effectively improve the slag vertical mill operating rates, reduce labor intensity of workers' jobs and improve the vertical mill output and lower power consumption.
CHAENG is a large comprehensive service provider mill kiln equipment in China, the introduction of slag vertical mill products using new efficient cage rotor separator to ensure that the finished product than the surface area can be flexibly adjusted in 4000 to 5500c㎡ / g, a single electrical energy consumption does not exceed 30Kwh can achieve intelligent control.

CHAENG Engineering teams according to the specific mining conditions, material characteristics, targeted reasonable, improved technology solutions to help customers solve various technical problems. If the quotes and other technical questions, please consult online or send us an email

GRMS Nickel slag vertical mill grinding process technology and principles

Nickel slag, Blast furnace slag, steel slag grinding process technology, mainly combined ball mill + roller press, pre-grinding roller mill + ball mill grinding, vertical mill grinding. Wherein, GRMS Nickel slag vertical mill grinding process is simple, small footprint, low construction costs, high grinding efficiency,low energy consumption, is the ideal nickel slag, slag, steel slag treatment process.

Slag, steel slag, nickel slag vertical mill works principle as follows: Nickel slag vertical mill uses two forms of feeding and side feeding centers, vertical mill material from falling into the upper lock valve, slide along the feeding tube straight into the disc on, with the rotation of the disc outward throw, again cutting the vertical scraper means Chute welding scraping, he was thrown into the grinding zone lining on the disc, abrasive surface grinding roll grinding in this region Directly above.
On the disc are roller grinding material, by a small portion of the new material with high moisture and most over-the-mill finished with lower water composition. This is because a large part of the unfinished coarse material separated by the separator is returned, which is the recycle material. The slag discharge auxiliary roller compaction. Main roller rocker arm fixed to the main, a good material layer is configured by pressure grinding. Force by the roller itself weight and hydraulic system pressure generated by the roller and the grind bed friction rotation.
Sensors and buffers for the rocker arm roller installed to prevent direct metallic contact with the disc. Was milled slag particles under the effect of centrifugal force is thrown out and through the ring gauge, where it is the collector loop through the wind increased airflow. Dust and gas mixture flows through the grinding chamber, which was equipped with a vertical mill liner wear of the cylinder surrounded enter welded to the vertical mill separator barrel on the finished separator will be elected.
Through the annular air ring by a vertical mill discharge foreign matters, as well as in case of motility disorders, falls through the annular air ring roller mill cone slag grinding, by installing the disc following board scraper, scrape drain mouth after both the nickel slag discharged from here through the air box into the recycle feed tube slide, grinding again, separator, until a qualified products.

CHAENG(Great Wall Machinery) Nickel slag production line project has been officially launched, can be designed to provide customers with an annual output of 30,0000 to 100,0000 t of nickel slag vertical mill production line.

30t/h coal vertical mill equipment price

Chaeng(Great Wall Machinery) pulverized coal grinding system specifications can be divided into: GRMC17.21 coal vertical mill, GRMC19.21 coal vertical mill, GRMC24.31 coal vertical mill, its production capacity is designed to be divided into: 20t / h, 25t / h, 40t / h to meet a variety of applications on the market in the field of coal-fired boilers, and the pulverized vertical coal mill is the world's leading coal preparation facilities have been highly rated domestic and foreign customers.
First, what is coal vertical mill production process is the full set of equipment?

Figure: coal vertical mill process flow
Second, what's working principle of coal vertical mill ?
coal feed the vertical mill After Rotary feeder , with the rotation of the disc from the center to the edge of the movement, at the same time by the coal vertical grinding mill roll extrusion and grinding. After grinding disc at the edge of the pulverized coal to be brought up from the hot gases into the air ring, the meal back to the disc and then grinding, qualified powder into the hot air from the bag filter after collecting chute transported by air to the library side of the elevator into the finished products. Drying heat generated from the combustion hot stove in the scene. Hot air through a pipe into the mill, the mill after the gas cleaning system by the fan into the chimney, where a portion of the cycle again into the mill through the circulation duct.
Third, What's the technology advantages of coal vertical mill?
1, set the grinding, drying, separator, delivery in one energy efficient.
2, disc shape is conducive to the material after grinding the edge of the disc was promptly thrown into the isolated, reducing over-grinding. High efficiency, low power consumption.
3, coal vertical mill roll grinding machine pulls out, the repair and replacement of wearing parts is very convenient.
4, the roller sleeve symmetrical shape of the tire structure, can be used upside down, long life, low operating costs.
5, the separator for the efficient dynamic - static separator, high efficiency, small resistance.

6, with a limit device can be prevented when no material on the disc and roller disc in direct contact, wear and avoid severe vibration.