Progress in crushing and screening technology

Manufacturers of crushing and screening products have developed a range of new systems to improve product quality. The recent Hillhead show in the UK (British International Engineering Heavy Industry Machinery, Mineral Recycling Machinery and Mining Machinery Show 2014) is the launch of these new products, although manufacturers around the world have been developing new technologies. While the cost of downtime is reduced, production efficiency and wear life are the main goals of innovation.

CDE Global says its new R2500 dry sifter has high throughput and high performance. This stationary primary screen has a processing capacity of 500t/h and is compatible with existing or new cleaning systems. The company claims that the system greatly increases production efficiency, while the electric drive reduces fuel costs and operating noise. The R2500 is suitable for use in locations where a range of difficult materials are processed.

Its main features include an innovative design of a laminated side wall panel on the ProGrade P2-75/R sifter that gives the sifter greater strength, lighter weight and lower power requirements. Zinc plating is a standard, a dot screening machines designed to reduce the weight, more energy transfer to ensure that the material to achieve a more efficient screening. The ProGrade P2-75/R Screener is an integral part of the CDE product spectrum for the R2500, M2500 and M4500. Field physical testing verified the results of the finite element analysis. The R2500 screening machine was also physically tested on CDE's professional Pro Grade test facility equipment.

In terms of material handling, McCloskey's new stacker is more flexible and increases productivity. The TF80 and WF80 models can be quickly adjusted from 0° to 29°, are mobile and easy to transport. These devices improve material handling and material stacking operations, operate at 0° flat, achieve lower material build-up, and achieve flow-controlled, non-blocking, bottleneck-free and bridge-free material output operations. The radial shaft and hinge points of the wheeled WF80 ensure that the hopper remains fixed during operation. The tracked TF80 engine has a power of 75 kW and is highly mobile, with hydraulic folding for quick installation. In addition to the high-capacity feed hopper (up to 17.3m), the 2014 model uses a 1.2m wide, 24.4m long heavy-duty conveyor belt and a 1.2m wide heavy-duty feeder.

RM International calls its RMV550GO! It is versatile and can be used for several crushing operations on a single unit. The machine combines the technology of a cone crusher and a vertical shaft impact sander (VSI) to become a fully mobile gravel and gravel equipment. It can use waste to produce sand or gravel or to process hard rock to produce recycled aggregate. RMV550GO! The production capacity of 0-4mm sandstone using 8-16mm waste aggregate is about 50t/h; the production capacity of 0-32mm aggregate using 70-200mm hard rock is about 140t/h. In addition, the company also offers RMMTS2010 crawler belts, which can replace wheel loaders and reduce user costs. The machine can be stacked up to 8m and can be transported in low-level trailers to stack a variety of materials.

Sandvik has introduced a range of new systems for the mining industry, including crushing, screening units and breakers. The C1531 primary crusher and C1532 secondary crusher represent a new generation of modular horizontal impact (HIS) crushers featuring high performance and good appearance; modular design helps reduce component costs and the same components Used in the Price3HIS series; downtime is also lower than other equipment. Users can use these devices to complete the replacement of the crushing bin parts within 15 minutes, compared to the previous generation, which takes 2 hours. Rowan Dallimore, the company's impact crusher product manager, said: "We can change the crushing bin according to product demand."

The design of the crushing bin can achieve an efficient crushing ratio. The stepless adjustable hydraulic curtain is used to prevent the unbreakable material from entering the crushing cycle; the rotating shaft and the breaking hammer have large inertia, and the crushing performance is optimized. The self-sharpening hammer design can be The feed is cut more effectively; the safety interlock structure prevents the crusher from being accidentally opened during operation; the design can also raise the curtain and clear the blockage without stopping the machine.

CI531 can handle materials up to 1m in size, throughput 400-700t / h, weight 27.75t; CI532 maximum feed size 350mm, throughput 250-400t / h, weight 29.65t.

The QS331 is a compact, mobile secondary cone crusher suitable for use with the company's CS430S cone crusher. The quality of QS331 is high, the size of the feed port is almost twice that of the traditional cone crusher, and the maximum feed size is 360mm. A spokesperson said: "You are entering the field of jaw crushers , thanks to the crushing bin configuration, the machine can handle fine aggregates."

The assembled hydraulically-adjusted CSS adjustment system optimizes production and compensates for lining wear. The unit is equipped with an automatic tilt sensor on the crushing chamber for controlling the feed rate, which limits the operator's operation to increase or decrease the output. .

In addition, the company also released the 5011 breaker for the first time, which was designed with the 3288 and 4099 breakers. These three breakers use a new working principle to meet specific applications to increase productivity and suitability. The 5011 breaker weighs 4.75t and is suitable for 43-80t excavators. It is between the 4099 and 7013 models in the Rammer Large Range range. The flexible working characteristics highlight the concept of variable stroke. The long-stroke structure is equipped with a low impact frequency for handling hard materials such as granite and reinforced concrete, while the short-stroke structure is equipped with a high impact frequency for softer materials such as limestone . At the same time, the standby shock protector selector avoids sparks in the operating mode. The company claims to have a long working life and the crushing machine can be attached to the assembly company Ram lubeI or Ram lube II lubrication system to reduce maintenance.

Stelex construction equipment introduces a new quick-fit HT152R cylinder screen. The company claims that the HT152R is suitable for equipment that is highly mobile, handles large stone sizes, has high tonnage throughput, and requires fast installation. Reducing installation time is important for short-term rental projects or for moving cylindrical screens with minimal effort on site. The device has a new support frame design that automatically extends to the working position, and the cylindrical screen chassis can be lifted by a crane. Once the legs are extended, the cylinder screen is ready for work. The HT152R can process 600mm blocks at a rate of 300t/h with a mesh size up to 300mm. The sieve drum has two separate parts, which are bolted together to produce two different sizes of products, while the oversized material is sent to the tail of the sieve drum. Screens are designed and machined to meet specific requirements for handling a wide range of different materials. The heavy-duty feeder has a capacity of 5.2m3 and can be fed from the rear or side by an excavator or loader. The feed falls on the feeder and the reciprocating oscillating feeder pushes the material into the screen at a specified rate. The speed of the sieve drum can be adjusted to suit different feed materials, and the environmental conditions or the position of the work site can be changed. The treated material is collected under the equipment and the oversized material is collected at the end of the cylinder screen.

The Terex Mineral Processing System (MPS) introduces the new MJ47 primary jaw crusher module, designed specifically for large mining or contractors who require fixed equipment and do not want to be as complex as conventional equipment. The MJ47 module has a rugged 914mm~1219mm TerexJaques ST47 jaw crusher. Other features include Terex's simple 1.3m~7.3m heavy duty double deck bar vibrating feeder, large capacity truck unloading hopper and unloading conveyor. This modular product line includes several previously designed fixed and semi-fixed crushers and screens. The simple modular product spectrum facilitates installation and operation, and the designed modules are matched in size and work together. All Terex MPS modules are bolted together in the field and require very little field connection.

Its sister company, Terex Cleaning Systems (TWS), introduced the AggreScrub 150 cleaning system, the new larger AggreSand 206 cleaning system and the AggreSand 165 cleaning station. AggreScrub150 is designed to work independently or in conjunction with AggreSand devices. AggreSand150 is highly efficient and can handle viscous materials efficiently. These materials cannot be rinsed or screened. Modular design, ease of maintenance and versatility make it easy to install and service. The unit also includes a new mesh frame design for easy assembly and support of wash plates, waste drain screens, two flushing splints, grading screens, integrated sewage pumps and pumps.

The Aggresand206 cleaning unit is a large version of the AggreSand 165 with a maximum throughput of 400t/h. Modular design increases productivity and has the same new features as AggreSand165 cleaning equipment. Thanks to the pre-joining and positioning of the components, full assembly is achieved, meaning easier transportation and quick installation; independent sprinklers and man-machine interface control systems for high efficiency and high productivity; other features include rotary venting Tanks and centrifugal pumps, as well as sensors throughout the machine, provide operators with information on water pressure, rotary feed pressure and power consumption.

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