There is Serious Sand Loss in the Sand Washing Production Line. How to Remedy it?

 As we all know, among the reasonable and environmentally friendly configuration methods of the entire sand making production line, it is a popular trend to equip pulse dust collector and water-washed sand washing machine. In the wastewater of wet sand washing, fine and powdered sand is inevitably lost in the water flow. Each production line loses about 5%-25% of the content. Calculating the loss in a year is also very alarming. If these lost parts are collected back, this part of the profit will also be very considerable. This article shares four methods of fine sand recycling.

Sand washing machine classification

Sand washing machines are divided into wheel sand washing machine and spiral sand washing machine. Wheel sand washing machine is widely used for washing and classifying materials in mining, building materials, chemical industry, transportation, concrete mixing stations and other fields. The sand washing process is a circular motion. Spiral sand washing equipment uses the propelling action of spiral blades to clean soil. Compared with wheel sand washing machines, spiral sand washing machines have a higher cleaning efficiency and better cleaning effects on stones. In the same way, the different specific gravity of sand, mud, and water are used to extract the sand, and the water and mud flow away along the chute.

However, no matter which type of sand washing machine is used, in the process of stirring the water source, most of the sand will inevitably be picked up, and the separation will not be clear and it will flow away along the sink. Then it inevitably caused most of the losses.

Four methods of fine sand recycling

1. Multi-stage sedimentation tank sedimentation method

The sand washing wastewater flows into the sedimentation tank, which is preferably equipped with 3 layers. It will settle layer by layer over time. Since the specific gravity of sand and mud is relatively heavy, they can be separated after a relatively long time.

Of course, this method also has disadvantages. The long-term sedimentation process takes up a large area of the sedimentation tank. In the later stage, manual excavation of sedimented sand and sedimentary mud is required, which consumes lots of time and manpower.

2. Equipped with dewatering screen equipment

Discharge the sand washing wastewater directly onto the linear dewatering screen surface to recover the lost sand.

The disadvantage is that if the raw material contains little or no mud, there will be no problem. However, if it contains too much mud, the last step will be useless and the recycling effect will not be achieved at all. What is recycled is still a mixture of sediment and sand.

3. Fine sand recycling machine device recovery

Drain the sand washing wastewater directly into the lower water tank of the fine sand collector. Use a slurry pump to pump the mixed sand and mud water to the cyclone separator and then discharge it to the screen surface. The fine sand part is discharged along with the screen surface, and the mud and water flow back to the sewer tank, forming a cycle to continuously extract sand from the wastewater.

No other faulty or theoretical problems have been found yet, and this fine sand recycling device is relatively recognized on the market.

Two points should be paid attention to when operating the fine recycling machine: first, do not feed materials when starting up. It is recommended to feed materials after idling for a few turns. This is more reasonable and can also reduce the burden on the equipment; Second, the overall power must be taken into consideration when configuring the transformer. Configure more voltage appropriately to ensure that the equipment can work normally and will not operate at low voltage.

4. Add chemicals

Discharge the lost sand water into the sinking tank, and add a chemical agent that can cause the mud and sand to quickly condense into floc, thereby achieving rapid separation of sand, mud and water. However, this method is mostly used in the coal slime industry to recycle clean and fine coal. Its use in sand and gravel quarries has certain limitations and cannot be popularized for the time being.

What's the Difference Between the Spiral Sand Washing Machine and the Wheel Sand Washing Machine?

 Sand washing is the last process of the sand production line. The quality of the machine-made sand is better and cleaner after being cleaned by the sand washing machine. Therefore, the choice of sand washing machine is also particularly important. There are two types of common sand washing machine: spiral sand washing machine and wheel sand washing machine in the market. What is the difference between these two devices? Which sand washing machine is the best device?

Spiral sand washing machine and wheel sand washing machine are common washing equipment, and the differences between the two are:

1. Different composition structure

The composition of the spiral sand washing machine mainly includes the following parts:

1) Spiral shaft: The spiral blade is fixed on the spiral shaft, and the spiral shaft will drive the spiral blade to rotate.

2) Spiral blade: The spiral blade is located on the spiral shaft, and the sand and gravel materials are cleaned and screened by rotation.

3) Drive device: Drive the spiral shaft to rotate and drive the spiral blade to clean and screen.

The composition of the wheel sand washing machine mainly includes the following parts:

1) Drive device: Drive the wheel barrel to rotate and drive the sand and gravel to rotate.

2) Wheel barrel: Equipped with blades, through the role of rotation and liquid to clean sand and gravel, to achieve the effect of clean and screen.

3) Speed reducer: Reduce the speed of the drive wheel barrel to meet the production needs.

4) Spray pipe: Spray water flow and cleaning agent into the wheel barrel to assist in cleaning and screening.

2. Different application occasions

The spiral sand washing machine is suitable for processing sand and gravel materials with high mud content, strong viscosity, or different particle thicknesses. Compared with other sand washing equipment, the spiral sand washing machine has a simple structure and a stable operation structure, which can effectively solve the problems of large viscosity and high mud content of sand and gravel materials. At the same time, it has the advantages of high-efficient, low energy consumption and a small occupied area.

Wheel sand washing machine is suitable for processing sand and gravel containing a lot of fine powder and weak viscosity, such as river sand, sea sand, etc. Compared with other sand washing equipment, the wheel sand washing machine has the advantages of simple operation, good cleaning effect, wide cleaning range, and environmental protection of energy-saving. At the same time, it can be unattended to achieve continuous operation with high-efficiency production.

3. The Different effects of washing sand

The spiral sand washing machine is suitable for processing relatively small particles of sand and gravel, which can be graded and screened by the rotation and pushing action of the spiral blade.

The wheel sand washing machine's sand washing effect is relatively thorough, which is suitable for processing large particles of sand and gravel. It uses the high-speed rotating wheel to generate strong collision and impact force, which can effectively remove the attached substances on the surface of the sand and gravel materials, and can also realize the separation and classification of sand and gravel materials.

Spiral sand washing machine and wheel sand washing machine have their own applicable scenarios and advantages, can not generalize which is better, the specific choice should be judged according to the actual situation and needs, you can refer to the following aspects:

1. Equipment price and cost of maintenance:

Spiral sand washing machine: The general price of the spiral sand washing machine is relatively high with stable operation, simple structure, easily maintain, durability, high cleaning rate, and less sand loss.

Wheel sand washing machine: The wheel sand washing machine is usually relatively cheap with relatively convenient maintenance. The impeller has a reasonable design, reasonable structure, high cleanliness, large processing capacity and low power consumption. The entire transmission device (including bearings) is isolated from water and water-bearing materials to avoid damage caused by immersion, sand and pollutants. The screen made of wear-resistant materials has a long service life, and there are basically no other wear parts except the screen.

2. Efficiency of work and processing capacity requirements:

Spiral sand washing machine: The working efficiency of the spiral sand washing machine is relatively high. It is mainly suitable for processing fine-grained sand and gravel. It is usually suitable for large and medium-sized production lines or scenes with high processing capacity requirements. Generally, it is tens of tons per hour to hundreds of tons /hour. It is suitable for large-scale or medium-sized sand and gravel treatment projects.

Wheel sand washing machine: The working efficiency of the wheel-type sand washing machine is low, and it can handle fine and coarse sand and gravel. Usually, the processing capacity is smaller. It is suitable for larger production lines or occasions that require high processing capacity from several ten tons/hour to hundreds of tons/hour. It is suitable for handling large and medium-sized sand and gravel treatment projects or large and medium-volume sand and gravel cleaning needs in industrial production.

3. Special working conditions:

Spiral sand washing machine: Under special working conditions, the spiral sand washing machine has a better effect for processing sand and gravel materials containing higher viscosity and cleaning sand and gravel containing organic substances,

Wheel sand washing machine: Under special working conditions, the wheel sand washing machine is more suitable for processing sand and gravel materials with higher humidity and cleaning sand and gravel containing oil-immersed substances, such as petroleum residue and oil sludge.

To sum up, in general, the two have their own characteristics and different use occasions. We recommend that users should consider the specific needs, characteristics of sand and gravel materials, treatment scope, budget and work efficiency when choosing a sand washing machine. Vanguard Machinery is a professional mining machinery manufacturer with excellent equipment and perfect after-sales quality, we can tailor equipment solutions for you to meet your specific needs.

Gratitude and Forge Ahead | Vanguard Machinery Year-end Shipment Guarantee Delivery

If you plow the fields early in winter, the work will be done in the coming year. Although winter is the end of the year, it is also the foundation and prelude to the new year's work. Since the beginning of winter, many sets of equipment in the production plant of Vanguard Machinery need to be delivered centrally. The severe cold in winter cannot withstand the enthusiasm of Vanguard Machinery's people. They show their enthusiasm in their respective positions, work overtime to catch up with the schedule, ensure production, and keep busy. We are rushing to produce equipment and deliver goods to customers in Saudi Arabia, Malaysia, Mongolia, and Thailand in a timely manner. Every process is in an orderly manner, and every link is taken seriously and responsibly, striving to achieve high efficiency and high quality! Come with me to experience the busy scene of delivery in the workshop!

▲We braved the low temperature, wind and snow to pack the 6CX106 crawler-type mobile crushing plant

▲Equipment waiting to be shipped in the dispatching area

▲The 100 T/H cone crusher fixed production line is loaded and shipped.

▲ 150 T/H steel structure crushing production line for container delivery.

▲The goods arrive at the port and head towards the destination!

Vanguard Machinery maintains a long-term and stable cooperative relationship with the port customs brokers of major fleets and port areas and has efficient coordination capabilities, which can enable the goods to safely arrive at the port and port in a short time and be smoothly cleared and released for shipment and loading.

Hot sales bear witness to strength, and quality wins favor. Vanguard Machinery will continue to fulfill its solemn commitment to be responsible for the brand, reputation and customers, maintain strong fighting spirit and pragmatic innovative style, and work with customers to make greater contributions to the development of mining machinery in my country!

AS THE PREFERRED EQUIPMENT FOR SOFT ROCK CRUSHING, WHAT ISSUES SHOULD BE PAID ATTENTION TO WHEN USING THE IMPACT CRUSHER?

The impact crusher is a commonly used equipment in mine crushing. It has the advantages of a large reduction ratio and a good particle shape of the finished product, which is widely used in mines, building materials, roads, railways and chemical industries. When using the impact crusher, it is necessary to pay attention to the correct operation method and safety regulations, follow the operation manual provided by the equipment manufacturer, and regularly check and maintain the equipment to ensure its normal operation and prolong its life.

The following are some suggested references for the correct operation of impact crushers:

1. Material control

(1). Reasonably control the feed

According to the specifications and requirements of the equipment, the feeding amount and speed should be reasonably controlled to ensure the reasonable control of the material and the stability of the feeding amount and avoid overloading the equipment or material accumulation caused by excessive feeding speed and avoid to cause the influence to the load of the impact crusher.

Try to control the uniform distribution of materials in the crushing cavity, avoid excessive concentration in a certain position, make the crushing more uniform, and improve the crushing efficiency and final product quality. The feeding speed can be controlled by adjusting the running speed and feeding volume of the feeding device, and the feeding speed can be precisely controlled by adjusting the parameters of the frequency converter to avoid equipment damage caused by overload operation or excessive feeding.

(2). Avoid excessive material entering the crushing chamber

Ensure that the size of the material meets the requirements of the equipment, and avoid excessive material entering the crushing chamber, so as not to cause material jams or equipment failure. For different types of materials, according to their characteristics and required crushing effects, pay attention to check the uniformity and humidity of the materials, and properly adjust the feeding amount and speed, which can improve the crushing effect and operating efficiency of the equipment.

2. Regularly check the wearing parts

Regularly check the wear of the impact block, liner, flat hammer and other wearing parts, and replace or repair them in time to ensure the normal working condition of the equipment. It is recommended to formulate a reasonable inspection plan according to the frequency of use of the equipment and the working environment and record the maintenance situation so that necessary maintenance measures can be taken in time.

(1). Impact block and liner:

Regularly check the wear of the impact block and liner to ensure its integrity, so as to ensure the crushing effect and the smooth passage of materials. Observe whether its surface is deformed, worn or cracked. If serious wear or cracks are found, it should be replaced or repaired in time. Keeping impact blocks and liners in good condition helps maintain crushing effectiveness and equipment stability.

(2). Flat hammer:

Check the wear degree of the flat hammer and observe whether the flat hammer is blunt, severely worn or cracked. If excessive wear is found, it needs to be replaced or repaired in time. The use of a severely worn flat hammer may result in a reduction in the crushing effect and even equipment failure.

(3). Other wearing parts:

In addition to impact blocks, liners and flat hammer, other wearing parts should be checked regularly to observe their wear and operating conditions. Replace or repair if necessary.

Motor: Regularly observe the running state, temperature and noise of the motor. If found the motor is abnormal heating, noise or vibration, it should be repaired or replaced in time.

Transmission: Check the wear and fastening of the transmission (such as belts, pulleys). Ensure the normal operation of the transmission. If serious wear, looseness or damage is found, it needs to be replaced or repaired in time.

Hydraulic system: Regularly check the oil quality, leakage and pressure of the hydraulic system. Ensure the normal operation of the hydraulic system. If the oil is found to be dirty, leaked or abnormal in pressure, it should be repaired or replaced in time.

Control system: Check the electrical components, wiring and control procedures of the control system. Ensure the normal operation of the control system. If electrical faults, loose wiring, or abnormal control procedures are found, repairs or adjustments should be made in time.

3. Regular maintenance and lubrication

Regularly check the lubrication of the equipment, keep the equipment well lubricated, and regularly add or replace lubricating grease as needed to reduce friction, reduce energy consumption, and prolong the life of the equipment. The following are common lubrication points of impact crusher in general, but the lubrication points and methods of specific equipment may be different. Customers can obtain exact lubrication point locations and suggestions according to the equipment manual or contact the manufacturer. At the same time, pay attention to regular cleaning of the lubricating parts, and ensure the selection of appropriate lubricants and lubricant additions to maintain the normal operation of the equipment and prolong the service life.

(1). Main shaft bearing: The main shaft bearing in the impact crusher is an important lubricating part, which requires regular lubrication, inspection and maintenance to ensure that the grease is always in good condition and the main shaft bearing works normally.

(2). Connecting pins of the back cover: According to the requirements of the equipment, add an appropriate amount of lubricating oil to the appropriate position of the connecting pins. The lubricating oil should be evenly distributed on the connecting pins and the surrounding friction surfaces to ensure that the connecting pins can move freely and run smoothly without abnormal friction or jamming.

4. Observe the operation status of the equipment

Observing the operating status of the equipment is the key to ensuring the normal operation of the impact crusher and discovering potential problems in time. If you notice that the equipment is operating abnormally, you should stop it immediately for inspection and maintenance. The following are some equipment indicators that need to be observed.

(1). Speed: Observe whether the speed of the crusher meets the normal range. Unusually low or high speeds may indicate a malfunction or improper operation of the equipment.

(2). Vibration: Pay attention to observing the vibration of the equipment. Normal slight vibrations are normal, but excessive vibrations may indicate problems with the equipment such as imbalance, wear or looseness.

(3). Noise: Pay attention to the noise level generated by the equipment. Sudden increases in noise or unusual noises may indicate that equipment components are worn, damaged, or in need of lubrication.

(4). Temperature: Regularly check the temperature of each part of the equipment. If a spot is unusually hot, it could indicate friction, poor lubrication, or other problems.

(5). Feed and discharge conditions: Observe the smoothness and uniformity of material feed and discharge. If a blockage, poor flow, or unevenness occurs, stop the machine immediately to check the cause.

(6). Current and voltage: Regularly monitor the current and voltage of the equipment to ensure that it is within the normal working range. Unusual current or voltage fluctuations may indicate an electrical fault or power supply problem.

The above are some suggestions for the use and maintenance of the impact crusher. In actual operation, it needs to be carried out according to the specific model of the equipment and the operation manual provided by the manufacturer. Before operating the impact crusher, be sure to master the operation guide of the equipment, and operate in strict accordance with relevant safety standards and regulations.

If you encounter problems or need more technical support, you can contact Vanguard Machinery directly, and we can provide you with professional suggestions and solutions.

How is the Limestone Crushing Production Line Configured? -Vanguard Machinery Tech

 Limestone is a common raw material for machine-made sand and gravel. The hardness is generally 3 on Moh's hardness, which is medium hardness. It is widely used in construction, industry, metallurgy and other fields. The commonly used crushing equipment for limestone crushing production lines are hammer crusher, cone crusher, and impact crusher, etc. Usually in order to improve the output and quality of the limestone sand, the production line also needs to be equipped with conveying equipment, control systems, dust removal devices and other auxiliary equipment to ensure the continuous and efficient production of the limestone.

Here are a few of Vanguard customer's project situations for the limestone crushing production line, for your reference:

1.Mobile crusher:

(1). 100 T/H Mobile Crushing Plant in Shandong

Configuration:VPE Mobile Cushing Plant + VPF Mobile Cushing Plant

Material:Limestone

Capacity:100 T/H

(2).150 T/H Mobile Crushing Plant in Anhui

Configuration:VPM-3 Combined Mobile Impact Cushing Plant VPM-3 FX1315

Material:Limestone

Capacity:150 T/H

2.Stationary crusher:

(1). Sand and gravel production line in Russia

Configuration:6CX96 jaw crusher, 2YA1860 circular vibrating screen, PF1214 impact crusher, ZSW3896 vibrating feeder, belt conveyor.

Material:Limestone

Capacity:100-150 T/H

(2).200 T/H stone crushing production line in Guizhou

Configuration:ZSW4211 feeder, PE750*1060 jaw crusher, PF1315 impact crusher, 2 sets of 1860 vibrating screen

Material:Limestone

Capacity:200 T/H

In summary, the configuration of the limestone production line will be affected by the hardness of the material, brittleness, capacity and other factors and variables. According to the different material characteristics and production requirements, different production lines can be used. For example, for limestone with high hardness, poor brittleness and high capacity, the following production lines can be used: vibrating feeder, jaw crusher, impact crusher (heavy hammer crusher), circular vibrating screen; For limestone with moderate hardness, good brittleness and medium capacity, the following production lines can be used: vibrating feeder, jaw crusher, circular vibrating screen; For limestone with low hardness, strong brittleness, and small capacity, the following production lines can be used: vibrating feeder, hammer crusher, small-scale hammer crusher and vibrating screen. Of course, the production needs of different enterprises will also be different, and it needs to be adjusted according to the actual situation. At the same time, in the process of production line matching, it is also necessary to comprehensively consider factors such as cost, production efficiency and product quality to ensure that the expected production goals can be achieved in the end.

Vanguard Machinery is a professional manufacturer of mining machinery and equipment mainly engaged in the production of crushing and screening and supporting equipment, with more than 50,000 square meters of modern standard phone plant and the industry's top equipment processing and manufacturing capabilities, focus on details, adhere to quality, complete equipment models, perfect after-sales service.