One problem facing the current production of mechanism sand is the serious loss of fine sand, some even above 20%. This not only causes loss to the enterprise and environmental pollution, but also affects the sand grading, the fineness modulus is too coarse, and the quality is reduced. Therefore, the importance of fine sand recovery machine is self-evident. However, it is inevitable that many problems will be encountered in production to affect production. So today summarize 12 common faults and solutions for recycling machines. 1. Abruptly reduced or lost sand If it is found that the amount of fine sand recovery is significantly reduced of fine sand during operation, it is necessary to check whether the screen is broken or the bolts fixing the screen are loose. In the face of this situation, the solution is to change the screen or tighten the bolts. 2. Rack vibration After the recycling machine works for a period of time, the bolts on the connecting frame or the bearing seat are loose during constant vibration. The troubleshooting method is to tighten the bolts and check them carefully. 3. Noise at work Noise is because the change in gear pitch caused by gears. The…
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With the gradual reduction of natural sand, the market for mechanism sand has shown great potential and vitality. Especially in recent years, the huge demand in the construction market has promoted the rapid development of the sand and gravel market. Then, compared with river sand, sea sand, mountain sand and other natural sands, what are the advantages of machine sand? What are the characteristics? 1. Exterior Mechanism sand is the sand and gravel material obtained after crushing by professional sand making equipment such as a crusher. Compared with natural sand, it has the characteristics of sharp edges and corners, many needles and rough. River sand is dug directly from the river and is mixed with pebbles and fine sand. These pebbles have been washed by the river for a long time, and the edges and corners are relatively round. 2. Robustness and durability The solid performance of machine-made sand is slightly worse than that of river sand, but it still meets the superior product index of GB / T141684293 standard. There is no problem in the use of ordinary concrete. However, in concrete components that are often subjected to frictional impact, in addition to admixtures, the lime-sand ratio of the…
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Trommel screen is a new type of self-cleaning special screening equipment after electric vibrating screen and common mesh-type drum screen, which can be customized depends on the different actual conditions between different users. Trommel screens are widely used for screening solid materials that less than 300mm, which have lots of advantages, like, high screening efficiency, low noise, non-dust flying, long service life, and easy maintenance. The screening capacity is 30 tons/hour to 1000 tons/hour. Because of its unique structural characteristics, the trommel screening machine effectively solves the shortcomings of other types of screening equipment, such as blockage and screening efficiency, low crusher wear and high energy consumption. Trommel screen working principle The trommel drum screen is through the gearbox type deceleration system to implement a reasonable rotation of the equipment center separation barrel. The central separating cylinder is a screen composed of several circular flat steel rings. The central separating cylinder is installed in an inclined state with the ground plane. When working, the material enters the tube net from the upper end of the central separating cylinder. During the rotating process of the separating cylinder, the fine material is separated from the top to the bottom through the screen…
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Carbon dewatering screen is a high-efficiency dewatering and screening device for fine-grained dry/wet screening, dewatering, desilting, and desliming operations in coal preparation, mineral processing, and other industries. The application of the dewatering screen is at the beginning of the coal industry, and then widely used in the ore industry. So can the carbon dewatering screen really play an effective role in practical production applications? 1. High material dewatering rate According to the physical characteristics of the material, the moisture content of the dehydrated material is 12% -15%, which can be easily transported, loaded into a truck or placed. Dewatering screens are a low-cost solution that can increase the finished sand output of the production line. 2. Customized screen plate reduces costs The dewatering screen can be designed and customized according to the different materials. According to different sizes and different materials of sieve plates, different materials can be screened. Dewatering screens can also be designed with multi-layered screens to facilitate the handling of different materials. Using one dewatering screen for multiple products can reduce the overall footprint of the equipment and reduce capital and operating costs. 3. Equipment collocation is more efficient Dewatering screens are suitable for many applications and…
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Limestone sand washing plant is a common process of sand washing and removing impurities, which is often composed of sand washing equipment, sand making equipment, crushing equipment and feeding and conveying equipment. The specific equipment configuration of the production line should be selected according to the actual production needs of users. The equipment of sand washing plant under different processing capacity and different granule shape requirement ratio is different. Generally, a complete set of limestone sand washing plant will contain sand washing machine, screening machine, dehydration screen, fine material recovery system, conveyor belt, tail water treatment system. In addition, if the raw material with large particle size, the crusher, sand making machine, and other equipment are needed to equipped for the material crushing and sand-making before the start of sand washing equipment. Limestone sand washing plant process Take the limestone sand washing plant equipped with crusher, sand making machine, sand washing machine, belt conveyor and other equipment as an example. The specific washing process is as follows: the stone is evenly sent to the jaw crusher by the vibrating feeder for rough breaking, and the coarse broken material is sent to the impact crusher by the belt conveyor for fine crushing. The resulting fine…
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Rotary drum sand washing machine is currently very effective sand and gravel washing equipment. The drum sand washing machine uses mechanical principles to clean the raw stone while ensuring the quality requirements of the project, and ensuring sufficient productivity to meet the stone supply of the concrete mixing station. And has been widely used in sand quarries, mining, building materials, transportation, chemical industry, water conservancy and hydropower, concrete mixing stations and other industries. The rotary drum sand washing machine is mainly used for black, non-ferrous metallurgical mines, iron and steel, metallurgy, chemical industry, building materials, minerals, mixing, washing, separation, desliming and other difficult-to-wash large ore, to improve the process of mineral processing indicators. The washing efficiency can reach about 98%, and the processing capacity is large enough to meet large productivity. This combination is currently the most effective method for difficult-to-wash ore. Main features 1. High integrity With the exception of finished product stockpiles and belt conveyors, all systems are integrated into a single integrated frame, which not only ensures the integrity of the equipment but also leaves room for proper maintenance and inspection. It is convenient for storage at the construction site or for transportation on-site and is convenient…
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Sand washing equipment HS code is 847410 0000. HS code system is a scientific and systematic international trade commodity classification system. It adopts a six-digit code, which is applicable to the tariff, statistics, production, transportation, trade control, inspection, and quarantine, etc. At present, more than 98% of the global trade volume USES this list, which has become a standard language of international trade. The following are some commonly used HS codes for mining equipment are listed. Mining machinery HS Code Sand washing equipment Bucket/wheel sand washer 8474100000 Screw/spiral sand washer 8474100000 Sand washer accessories 8474900000 Screen machine Vibrating screen 8474100000 Trommel screen 8474100000 Dewatering screen 8474100000 Tailings dewatering screen 8474100000 Sand recycling system 8474100000 Wastewater treatment Mining thickener 8474100000 Filter press 8474100000 Vibrating feeder Vibrating feeder 8474100000 Crusher Jaw crusher 8474209000 Impact crusher 8474209000 Cone crusher 8474209000 Hammer Crusher 8474209000 Roll crusher 8474209000 Sand making machine 8474209000 Flour mill vertical mill 8474209000 Ramon mill 8474209000 High pressure mill 8474209000 Coarse mill 8474209000 Ultra-fine mill 8474209000
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Trommel screen is a very widely used machine for gravel and sand Philippines that adopts sorting technology, which is mainly driven by the vibration of the motor to carry out screening, classification. And the classification accuracy is high. Stones of different specifications are screened out by different meshes and dropped into the belt conveyor and sent to the finished product yard. Trommel drum screen is widely used for the screening of various solid materials with a particle size of less than 300, and the screening capacity is 20 tons / hour to 300 tons / hour. Currently trommel screen is suitable for the classification of large and small stones in the quarry, and the separation of soil and stone powder, and the separation of sand and stones in the sand yard; coal industry, used for separation of lump coal and pulverized coal, washing coal; chemical industry and beneficiation industry, used for classification of large and small lumps and separation of powdery substances. The maximum product under the screen is less than 100mm, the middle is 10-50mm, and the thinnest product is less than 3mm. The barrel of the trommel screen is generally divided into several sections, depending on the specific…
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Sand washer machine layout plan is generally consists of sand washing machine equipment, waste water treatment equipment, waste water treatment equipment, conveying equipment, screening equipment, etc., which can be continuously adjusted, reduced or increased equipment according to specific requirements, treatment process and processing capacity. It brings together decades of experience in designing and providing production lines for customers. Here are some common sand washer machine layout plan 1. Screening+sand washing+dewatering+fines recycling+muddy water purifying+sludge dewatering 2. Screening+sand washing+dewatering+fines recycling 3. Sand screening+sand washing+fine sand recycling machine About sand washing equipment selection 1. For the selection of core sand washing equipment, the upgraded sand washing machine and waste water treatment equipment are recommended. Compared with traditional equipment, such equipment has been greatly improved in terms of sand washing, fine sand recovery, time-production capacity and even energy consumption. Moreover, such equipment is environmentally friendly. 2. For the selection of some auxiliary equipment, such as feeder, shaker, etc., the characteristics of materials must be treated before the purchase, such as: humidity, hardness, granularity, etc. Then according to the actual sand washing production line output value needs to select reasonable specifications of equipment, only in this way can better play its good auxiliary role,…
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Dewatering screen is a piece of special equipment for dewatering sand, gravel, aggregate, minerals, coal slime, etc. It is widely used in sludge recovery, coarse filtration, dehydration and other very fine material recovery processes. The dewatering screen adopts a two-electrode self-synchronizing technology, a universal eccentric block and an adjustable amplitude vibrator. Vibrating dewatering screen working principle 1. High-frequency vibrating dewatering screen adopts flange-type exciter. And driven by two motors for reverse self synchronous rotation, so that the screen body makes periodic reciprocating movements in a linear direction, thereby achieving the purpose of hierarchical dehydration. 2. Rugged construction. The screen frame is connected by high-strength bolts, and the screen surface is composed of arc segments and straight segments. 3. According to the requirements of mechanical structure and process parameters, the vibrator is arranged above the center of gravity of the screen box. With this arrangement, the trajectory of the sieve is elliptical at the input end and circular at the middle, while the output end is still elliptical, that is, elliptical-circular-elliptical motion. Applications 1. Suitable for beneficiation, coal processing, and other industries. 2. Mainly used for fine particle dewatering and classification, slime or tailings recovery. 3. Widely used in dewatering of…
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Dewatering screen is a new type of vibrating screen that uses its multiple frequencies for dehydration. Energy-saving and environmental protection, low carbon, and green meet the requirements of building a sustainable society. The high-frequency dewatering screen is mainly used in the process of tailings dry discharge, etc., and has obvious effects. The dewatering screen is mainly composed of a screen box, screen panel, support system, and vibrating motor. Two unconnected vibrators are driven by the connected shaft to perform the synchronous reverse operation. The centrifugal force generated by the two sets of eccentric blocks is superimposed in the vibration direction and eliminated by centrifugation in the opposite direction, thereby forming a single excited vibration in the vibration direction. Self-synchronizing liquid-lubricated vibrator for vibration. The dewatering screen frame adopts special noise reduction materials and is connected by high-strength bolts to ensure the reliable operation of the screening machine and reduce working noise. The working noise of the whole machine is 85dB (A), which is about the same as that of a similar vibrating screen. The continuous operation of the dewatering screen is very demanding, which is related to the type, material, technical parameters and production environment of the dewatering screen. 1.Based…
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The sand washing plant is a streamlined operation composed of vibrating feeders, screening machines, sand washing machines and other equipment connected by belt conveyors. Driven by urbanization, the construction industry has higher quality standards for construction sand. In order to meet environmental protection requirements, the majority of sand field owners have invested in low water consumption sand washing plant. Low water consumption sand washing plant processing capacity There is a processing tank inside the sand washing machine. By increasing the overflow height of sand and gravel materials or reducing the inclination angle, the processing area of mechanical equipment can be increased, and the working efficiency and production capacity of the bucket sand washing machine can be improved. The adjustment of the diameter of the impeller of the sand washing equipment is related to the screen size of the sand washing machine. In addition, the operation and adjustment of the bucket sand washing machine will also affect the working efficiency of the bucket sand washing machine. From this aspect, the production capacity of the bucket sand washing machine can be adjusted. Good low water consumption sand washing plant performance At the beginning of the design, the sand washing machine combines the specific production conditions of the user…
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