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The thickener is a solid-liquid separation equipment based on gravity sedimentation. After the slurry is mixed with the flocculant, it enters the thickener through the central cylinder. The guide plate at the outlet end of the feed vertical cylinder guides the slurry from the feed vertical cylinder to the surroundings. Spread the slurry around. The slurry with a solid content of 10%-20% can be concentrated into an underflow slurry with a solid content of 45%-55% through gravity sedimentation. With the help of the rake installed in the thickener, the thickened underflow slurry can be made from Discharge from the bottom outlet of the thickener. The upper layer of clean water is discharged from the top drain port to achieve mud-water separation. Thickeners are commonly used in mining, metallurgy and other industries to process various minerals, metals and non-metallic materials. In addition, thickeners can also be used in industrial wastewater treatment, environmental protection and othe...

 What is the sand used in water purification systems? The sand used in water purification systems to filter out impurities is often called quartz sand or quartzite sand. Quartz sand is a siliceous mineral that has become one of the important filter media in water purification systems due to its high hardness, strong corrosion resistance, high density and stable chemical properties. What is the role of quartz sand in water purification systems? The quartz sand in the water purification system is mainly used to filter suspended solids, particulate matter and turbid substances in the water to ensure the safety and hygiene of drinking water. Quartz sand has the characteristics of large volume, high porosity, strong pressure resistance, and strong ability to capture pollutants. It can effectively remove impurities in water and make the water clear and transparent. https://www.lzzgmachine.com/service-parts/product-knowledge/what-type-of-sand-is-used-in-water-purification-systems.html

  Artificial sand is generally stored and dehydrated for 3 to 5 days to reduce the water content to within 6% and become stable. The artificial sand and gravel powder content varies depending on the initial moisture content. Generally, the stone powder content is in the range of 10% to 17%. When the initial moisture content of wet sand is 15% to 17%, the dehydration speed is fast within about 48 hours in the initial stage. Generally, the moisture content can be reduced to 8% to 10%. When the moisture content drops to 8% to 10%, it can be reduced to 6%. The dehydration speed slows down significantly around %, generally taking 3 to 5 days. Based on the daily production of 15,000 tons of finished sand and the daily sand consumption of 1 to 15,000 tons, the finished sand warehouse has a storage capacity of 50,000 m2, and the natural dehydration time is about 5 days. Measures to effectively control the  moisture content of artificial sand  in stacking sand bins 1. In the gener...

  Dry sand making is a machine-made sand production process. The raw materials are sent to the crusher through the feeder for crushing. The raw materials are crushed to less than 5 cm and sent to the sand making machine for sand making. After the sand making machine, the raw materials are crushed into sand grains of less than 5 mm and transported. machine to the finished product pile. The production process does not require water. It mainly removes powder through negative pressure in the dust box or positive pressure in the powder separator or a combination of the two. It uses wind to remove powder, so that the powder content of the machine-made sand is low, and the dust will also be removed. Collected as a by-product, dry sand making is suitable for areas with severe water shortages. Dry machine-made sand has many advantages 1. To save water resources, sand plants can be built in areas lacking water resources. 2. The finished product has low moisture content. 3. The process is sim...

 Recently, customer-customized sludge separation equipment was produced and delivered. It was sent to the Xinjiang oil field project site to help the customer’s project construction steadily advance. The R&D personnel of Longzhong Heavy Industry integrated the existing oilfield sludge treatment technology and developed a set of oilfield oily sludge separation equipment based on the actual situation of the customer’s project. The system uses scrubbing machines to fully stir and disperse, centrifugal separation, dehydration recovery and other technical processes to effectively separate the various phases in the oily sludge, truly realizing the four-phase separation of oil, mud, sand and water, and at the same time reaching the relevant national standards. Emission standards also generate economic benefits for enterprises.

Equipment in all aspects of domestic waste incineration slag treatment : iron remover, silo, crushing equipment, magnetic separation equipment, gravity equipment, gravity separation equipment, screening equipment, slag finished product collection tank, sedimentation tank, etc. Utilize the potential energy of gravity, use water as the medium and circulating flow, and set the equipment vertically from high to low; inject water and waste incineration slag into the crusher to form a material flow. Under the action of the gravity flow of the material, it passes through the crusher equipment, gravity equipment, and screening Equipment to obtain slag materials with fine particles, light weight and optimized components. After filtering through the collection tank and sedimentation tank, the dried fine-grained slag products are directly transported to the finished product warehouse; the clean water after sedimentation and filtration is again incinerated with garbage. The slag raw materials are ...

1. Increase the rotor speed of the vertical shaft impact sand making machine, increase the linear speed of the aggregate in the crushing cavity (this system is 65m/s), increase the sand formation rate and the stone powder content of the crushed sand, and at the same time reduce the fineness of the sand. number. 2. Adjusting the feed gradation of the vertical shaft impact crusher can greatly improve the sand making effect. 3. The <5mm aggregate produced by the production line system after coarse crushing and medium and fine crushing has a high stone chip content. The process prevents this part of the aggregate from producing finished materials, and allows all the <5mm aggregates after medium and fine crushing to enter the vertical shaft impact crusher for shaping. To control the quality of finished sand. https://www.lzzgmachine.com/service-parts/product-knowledge/how-to-adjust-the-fineness-of-basalt-sand-making.html

Processing raw material: slag after incineration of domestic waste slag treatment in power plant Equipment configuration: shaftless drum screen, armored permanent magnet magnetic separator, jaw crusher, hammer crusher, wet permanent magnetic drum magnetic separator, dehydration screen, jig, shaking table, hanging selection, ball mill, Spiral sand washing machine, trommel screen, leaping screen, eddy current separator, wheel type sand washing and recovery integrated machine, box filter press and other auxiliary equipment. The successful signing of this project will open a new situation of mutual benefit and win-win for both parties. It is hoped that the project will be completed and put into operation as soon as possible, and make greater contributions to the construction and social and economic development of Shangqiu City.

The molding sand suitable for casting that is widely distributed in nature is silica sand , also known as quartz sand. The main mineral composition is quartz, and the main chemical composition is SiO2. Natural silica sand: Due to its different chemical composition and particle size composition, it is used as molding sand and core sand for non-ferrous alloy castings, iron castings and small and medium-sized steel castings. Selected natural silica sand: used for various steel casting molding sand and core sand using organic matter as binder. Artificial silica sand: molding sand and core sand used for precision casting, furnace lining or steel castings.

Mica and quartz are common minerals that play an important role in mineralogy. Although they are both silicate minerals, there are clear differences between them. First, mica and quartz are very different in appearance. One of its distinguishing features is that mica exhibits a layered structure that can be easily peeled off into thin flakes. Quartz, on the other hand, is a uniform crystal with no layered structure. Additionally, mica is usually dark in color, such as black, brown, or green, while quartz is usually clear or white. Secondly, mica and quartz also differ in their physical and chemical properties. The hardness of mica is usually between 2.5 and 4, which is relatively easy to be scratched; while the hardness of quartz is very high, 7, which is a very hard mineral. In addition, mica has good refractive properties and electrical properties, while quartz is an excellent piezoelectric material.

The asphalt stone production line  has a designed stone production scale of 3.3 million tons per year. The complete production line processing equipment includes 2 rod feeders, 2 jaw crushers, 4 cone crushers, 3 vertical shaft crushers, vibration 10 screens and 56 vibrating feeders. Through the controllable and adjustable screening design, the output of materials of each particle size can be adjusted and the particle gradation of the finished stone and the fineness modulus of the finished sand can be controlled. Among them, working condition 1 can produce a total of 6 types of aggregates required for asphalt aggregates: 0-3mm, 3-5mm, 5-10mm, 10-16mm, 16-26.5mm, and 26.5-31.5mm. Working condition 2 can produce It is suitable for 0-5mm, 5-16mm and 16-31.5mm aggregates of general commercial concrete. In addition, for aggregates of 5-31.5mm, you can choose to have plastic surgery or not to produce ordinary aggregates or high-quality aggregates.

Natural dehydration of artificial sand. At present, the method and process adopted in natural dehydration of domestic hydropower projects is artificial sand cutting, storage dehydration and artificial sand retrieving separately. Generally, after 3-5 days of storage dehydration, the water content can be reduced to less than 6%. And stable. The content of artificial sandstone powder and the initial water content vary. Generally, the content of stone powder is in the range of 10% to 17%. The water content is reduced to 8% to 10%. When the moisture content is reduced to 8% to 10%, the dehydration speed is obviously slowed down when it is reduced to about 6%. Generally, it takes 3 to 5 days. According to the daily production of 15,000 tons of finished sand and the amount of 1-15,000 tons of sand used per day, the finished sand warehouse has a stockpile of 50,000 m, and the natural dehydration time is about 5 days.

wheel type sand washer Is the processing capacity of the wheel-type sand washing machine suitable for large-scale sand making plants? Because the traditional sand washing machine inevitably causes the loss of a large amount of fine sand during the cleaning process, so that a lot of wealth is also lost. The wheel bucket sand washing machine has a high cleaning height, reasonable structure, large output, and less sand loss during the sand washing process. sand machine. The wheel type sand washing machine has a simple structure, and the impeller drive bearing device is isolated from water and water-receiving materials, which greatly avoids the damage of the bearing due to water, sand and pollutants, and greatly reduces the accident rate. The loss of fine sand and stone powder is very small, and the gradation and fineness modulus of the washed construction sand meet the standard requirements. The wheel bucket sand washing machine has almost no wearing parts except the screen, and has a lon...

  The placer gold ore washing operation includes three processes of crushing, screening and desliming. It is a very important and necessary operation before the placer gold ore is sorted. The reason why this operation is important is that it not only breaks and separates the mud and sand, but also removes the gold particles adhering to the surface of the gravel, and once a large amount of gold-free gravel can be screened out, it can be discarded directly; the general yield can be It reaches 40%-50% of the ore, and at the same time, most of the slime is removed. In placer gold sorting , desliming, like removing large gravels, is also a very important preparatory operation. Materials less than 0.1mm in placer gold generally do not contain gold or contain very little gold. For example, gold less than 0.1mm in placer gold in Hunchun Gold Mine only accounts for 0.15%, while the same-sized ore slime accounts for 13.77% of the original ore sand. This kind of gold smaller than 0.1mm is com...

YK series circular vibrating screen can be used for screening fine sand and coarse sand . The rocks suitable for sand making, such as river pebbles, limestone and granite, go through the crusher and then enter the circular vibrating screen to screen out fine sand (sand with an average particle size of 0.25mm~0.125mm), medium sand (0.5~0.25mm) and coarse sand (1mm~0.5mm). If the customer needs a specific size of sand, you can replace the corresponding type of screen. YK series circular vibrating screen is mainly composed of screen box, screen, vibrator and damping spring. The vibrator is installed on the side plate of the screen box, and the motor rotates through the coupling, which produces centrifugal inertia force and forces the screen box to vibrate. The YK series circular vibrating screen is installed with a seat, and the adjustment of the inclination angle of the screen surface can be realized by changing the position and height of the spring bearing.

Sand and gravel are one of the main components of concrete. Sand and gravel play the role of filling and reinforcement in concrete, and play a vital role in the performance and strength of concrete. Sand and gravel act as a filler in concrete. Concrete is made by mixing cement, sand, stones and water in certain proportions. Sand and gravel have a filling effect between particles, filling the gaps in the cement gel, making the concrete more dense and compact. This filling action helps reduce shrinkage and cracking of the concrete and increases its durability. Sand and gravel enhance the strength and stability of concrete. The particles of sand and gravel form a mechanical connection with the cement gel, which increases the cohesion and compressive strength of the concrete. Sand and gravel can also improve the shear strength and impact resistance of concrete, and increase the stability of concrete. In addition, sand and gravel can also disperse the stress between cement particles and imp...

  1. It is easy to move, and the operation method is adapted to local conditions The construction waste mud dehydrator of Longzhong Heavy Industry adopts a streamlined body and a compact structure design, and compresses various functional equipment on a mobile device. The tire type can freely enter and exit the small work site, and the crawler type is good at climbing and can overcome various problems. It is not limited by the environment of the work site, and the work plan can be formulated according to the site, so as to achieve more and higher income under the premise of controllable costs. 2. Intelligent environmental protection, saving labor and worry, high income Longzhong Heavy Industry Construction Waste Slurry Dehydrator is not simply called a mobile crusher when the processing equipment is placed on a mobile frame. The construction waste mud dewatering machine produced by Longzhong Heavy Industry integrates advanced technologies such as machinery, hydraulic pressure, ele...

The river channel sludge filter press is a special equipment, which is used to deal with river channel dredging sludge, lake sludge and sludge brought ashore by cutter suction boats. The equipment adopts the principle of automatic water removal and extrusion dehydration. First, the sludge is introduced into the equipment through a slurry pump, and after pressing and squeezing, the output is clear water and mud cake. This treatment method does not require manual unloading, and the moisture in the mud cake is effectively removed, which can be directly packaged and transported, and the clean water produced can be directly discharged. Automatic processing: The equipment adopts an automatic control system to realize automatic water removal and extrusion dehydration without manual operation, which greatly saves labor costs and time.

Matters needing attention in the phosphate rock flotation process: 1. For raw materials with coarse particle size, sintered membrane flotation method is adopted, the enrichment particle size is -1.17+0.4mm, and the sorting equipment is jet inflatable flotation machine; or boiling bed flotation machine and jig flotation machine are used , The sorting size can reach 3mm. 2. For the selected materials of 0.5 ~ 1 mm, split flow flotation and countercurrent flotation can be used; 3. For fine-grained or ultra-fine-grained phosphate rock or phosphate rock slime, according to the characteristics that the floatability of phosphate minerals, carbonate minerals, and silicate minerals in phosphate rock varies with particle size, there are Trends in graded flotation.

Diatomaceous earth contains a small amount of Al2O3, Fe2O3, CaO, MgO, K2O, Na2O, P2O5 and organic matter. SiO2 generally accounts for more than 80%, up to 94%. The iron oxide content of high-quality diatomite is generally 1~1.5%, and the alumina content is 3~6%. The mineral composition of diatomite is mainly opal and its variants, followed by clay minerals – hydromica, kaolinite and mineral debris. Mineral debris includes quartz, feldspar, biotite and organic matter. The content of organic matter ranges from trace to more than 30%. The color of diatomite is white, off-white, gray and light taupe, etc. It has the properties of fineness, looseness, light weight, porous, water absorption and strong permeability.

Linear vibrating screen When the vibrating motor of the linear vibrating screen is working normally, the two motors run in opposite directions. This must be kept in mind. Only in this way can a linear motion be produced and the material will be pushed forward in a linear motion. If the direction of rotation of the vibration motor is the same, how to adjust it to work properly? As long as the wire sequence of the 3 live wires in a motor is arbitrarily changed to 2 wires, it will be fine.

Aiming at the problem that the sieve hole is easy to be blocked, there are many factors related to the sieve hole penetration rate, including the size and structure of the sieve hole, the size and shape of the material, the layout direction of the sieve plate, and the amplitude of the banana sieve, etc. Therefore, it is necessary to comprehensively consider these factors and optimize the parameters to achieve the optimal screening rate. Reduce the drop between the feed end of the sieve machine and the sieve plate. After raising the position of the feeding end of the sieve machine, the inclination angle of the sieve machine is increased, thereby speeding up the initial velocity of the material movement, enhancing the motion inertia, and improving the sieving rate of the material. However, this solution increases the speed of material movement while reducing the time for the material to stay on the screen surface. For small-sized (below 50mm) materials, it will directly enter the materi...

  The materials in the sand washing machine have been crushed in various ways from granular to powdery with different meshes: the lining plate mainly accepts the force of the impeller, and the wear mode is mainly the conflict between each other, so the surface Both hardness and toughness have certain requirements; the guard plate is mainly due to the friction and wear of material activities, and the demand for impact is not high; all accessories are also subject to corrosion and wear. The impeller exists in the movement of the fine sand recovery machine, and the parabola formed by the falling down crushes the material; the conflict between the impeller and the material, the material and the material, the material and the liner; the mutual crushing caused by the free fall of the material. It can be seen from this that there are many ways of wearing the wearing parts in the sand washing machine. The impeller is mainly caused by falling and friction wear, so there is also a demand for...

The quartz sand dryer is a rotary drum dryer . It is generally suitable for granular materials, and it can also be used to dry sticky paste materials or materials with high water content by partially mixing materials. Especially for drying sand, Wantai sea sand dryer | dryer has excellent drying effect. The advantages of the river sand dryer are large production capacity, wide application range, small flow resistance, large fluctuation range allowed in operation, and convenient operation. Advantage Wide range of applications can be used in chemical industry, coal washing, sand, kaolin, clay ore drying. Excellent configuration, the machine is mainly composed of rotary body, lifting plate, transmission device, support device, sealing ring lamp, etc. High working efficiency and stable performance. The thermal efficiency of the three-cylinder dryer reaches 80%. It has high temperature resistance, and can quickly dry materials with high temperature hot air.

 High-purity quartz sand tailings purification process The treatment of quartz sand tailings should follow the basic process of crushing, roughing, calcining, water quenching, grinding, magnetic separation, pickling, cleaning and drying. The crushed quartz sand tailings are roughed to remove obvious impurities, and then mixed with sodium oxide solids for calcination. After calcination, the quartz sand is showered and quenched to crack the quartz sand and remove the normal sodium silicate on the surface. The quartz sand tailings are then pulverized using the ball mill equipment using a wet grinding process, followed by magnetic separation, pickling, cleaning, and drying in sequence. The treatment of high-purity quartz sand tailings is actually based on the basic process of quartz sand purification, combined with the characteristics of quartz sand tailings itself, the purification production process has been adjusted, and the purification of quartz sand tailings has been better reali...

  Bucket sand washer is common used sand washing machine for artificial sand. FEATURES 1. It can realize the cleaning, impurity removal and dehydration of the finished sand. 2, can eliminate excess particles of bad sand. 3. The bearing and water are separated to avoid damage to the machine due to rust. 4. Set up sedimentation tank, add flocculant, water source can be recycled after clarification. 5. The transmission device repeatedly realizes the feeding, the screen can be adjusted, the maintenance is simple, convenient, and the cost is low. 6. Strong air tightness, it can be used to clean coarse sand or small powder such as stone powder.

High-purity quartz sand tailings process The treatment of quartz sand tailings should follow the basic process of crushing, roughing, calcining, water quenching, grinding, magnetic separation, pickling, cleaning and drying. The crushed quartz sand tailings are roughed to remove obvious impurities, and then mixed with sodium oxide solids for calcination. After calcination, the quartz sand is showered and quenched to crack the quartz sand and remove the normal sodium silicate on the surface. The quartz sand tailings are then pulverized using the ball mill equipment using a wet grinding process, followed by magnetic separation, pickling, cleaning, and drying in sequence. The treatment of high-purity quartz sand tailings is actually based on the basic process of quartz sand purification, combined with the characteristics of quartz sand tailings itself, the purification production process has been adjusted, and the purification of quartz sand tailings has been better realized. Increase its ...

Drum screen is a special screening equipment developed for building materials, metallurgy, chemical industry, mining and other industries. It overcomes the clogging problem of circular vibrating screen and linear vibrating screen when screening wet materials, and improves the output of the screening system. And reliability, it is widely used in the separation of sand and gravel in the sand and gravel field, as well as the size and particle size classification and lump powder separation in the chemical industry and mineral processing industry, and is favored by customers. 1. The noise problem caused by the loosening of equipment bolts Solution: Retighten bolts or other fasteners; 2. The wrong direction of rotation caused by the wrong connection of the motor power cable Solution: replace the power cable in the junction box; 3. The problem of delay in starting the click caused by overload of the motor or excessive conveying capacity Solution: readjust the delivery volume; 4. Insufficien...

 The process of cleaning silica sand is crushing, washing/, magnetic separation, acid leaching, washing, dehydration, and drying. water washing Washing sand recycling machine working principle. After the natural silica sand is classified and filtered by the screening equipment, the qualified products flow into the spiral sand washing machine through the launder or the pipeline. It is fully cleaned, soaked and broken by a screw mixer (for larger muddy and extra-large effect), sandstone is fully separated from impurities and mud. Fine sand and muddy water are deposited in the tail of the spiral washing, and the recovery of fine sand is achieved through a concentration and recovery device. Then the coarse and fine sand enters the wheel washing machine at the same time for secondary cleaning to achieve complete separation of the sediment.

Using high-pressure air as a power source to drive abrasive particles to hit objects within a certain range will produce a great impact. The function of the sandblasting nozzle is to spray abrasive particles on the object evenly and efficiently. Sandblasting nozzles can be divided into: straight hole sandblasting nozzle, Venturi sandblasting nozzle , double Venturi sandblasting nozzle, angle sandblasting nozzle Straight hole nozzle: There are only contraction section and straight section inside, the structure is simple and easy to manufacture. This kind of nozzle cannot overcome the vortex phenomenon existing at the inlet end, and the pressure loss is large; the abrasive velocity at the outlet is less than 100m/s under the pressure of 0.7MPa.

Emery is a kind of artificially synthesized silicon carbide, which has good thermal conductivity, stability and wear resistance, so it is widely used in metallurgy, building materials, ceramics and steel industries. How much do you know about its production process? Here is a detailed summary for you: ⑴, raw material crushing Hammer crusher is used to crush petroleum coke to the particle size required by the process. ⑵, ingredients and mixing Batching and mixing is the process of weighing and mixing according to the prescribed formula. The platform is used for batching, and the concrete mixer is used for mixing. The batching and mixing operations of petroleum coke and quartz sand are carried out according to the process requirements. ⑶, silicon carbide electric furnace preparation Electric furnace preparation is to refurbish and reorganize the furnace that was used last time, so as to put it into use again. The work content includes cleaning the bottom material of the furnace, repairi...

In the eastern coastal areas of my country, the population is dense, the economy is developed, and the amount of engineering construction is large. When the supply of river sand resources is insufficient, there is no other sand source to replace (for example, mountain sand or machine-made sand can be used in inland areas), and long-distance Transporting river sand will greatly increase the project cost. Like many foreign countries, in the case of shortage of land sand resources, people began to turn their attention to the local sand source—sea sand. Therefore, the mining and utilization of sea sand in coastal areas is a need for economic development. The United Kingdom, Denmark, Norway, Sweden, Belgium, Canada, Australia, New Zealand, Japan, South Korea, Turkey, India and other countries, as well as my country’s Taiwan region, have many years of history and rich application experience in sea sand application in engineering construction. . In particular, Japan, which is short of river s...

Hydrocyclone is a kind of equipment that uses centrifugal force to separate materials. After research in recent years, it has been widely used in various industries such as mineral processing, coal preparation, and chemistry. 1. Classification in the grinding circulation system: the hydrocyclone can be used for the classification of the coarse sand and overflow of the ball mill, as well as the pre-classification before the grinding operation. The obtained process index is roughly the same as that of the mechanical classifier, and can basically replace the classification machine work. 2. Desliming operation: The hydrocyclone can be used for desliming operations of various metal ore and non-metallic ores, and can achieve the following purposes: as a preparatory operation before the sorting operation, improve the sorting index; Flotation agent; removal of coarse sand in non-metallic ore; final concentrate. 3. Concentration operation: In some processes, because the pulp concentration is to...

  What are the equipments of silica sand washing production line? Silica Sand Washing Production Line in Pakistan. LZZG silica sand washing production line is mainly composed of crushing equipment, feeding equipment, sand making equipment, sand washing equipment and vibrating screening equipment. The crushing equipment generally uses jaw crusher for primary crushing, cone crusher or impact crusher for secondary crushing, feeding equipment is generally vibrating feeder, sand making equipment generally includes silica sand making machine, and can be customized according to the actual situation of the user. A sand washing machine is required,

The production of machine-made sand washing line in Southeast Asia has good profit prospects. River pebbles are hard, wear-resistant, stable in chemical properties, rich in resources, and the composition is very close to natural sand. The produced machine-made sand is not only an ideal green building material, It is also a good choice to replace natural sand. However, the machine-made sand after crushing river pebbles contains a lot of impurities, so it needs to be cleaned to meet the construction sand standard. Sand washing line equipment 1. Raw material: river pebbles 2. Finished product output: 100T/hour 3. The total water volume of the system: ≤100m³/h 4. Solid content of tail water: ≤15% 5. Equipment configuration: 2LZ30-75-1842D double-wheel sand washing and recycling machine, S-3060 trihydrogen purification body, G250-125 box filter press This set of sand washing line has been applied to customers in Indonesia, Vietnam, Laos, Thailand and other countries. If you are interested i...