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The main pollution sources of lead-zinc ore dressing plants include dressing wastewater and tailings sediment. Dust in the crushing and screening workshop and noise generated by large equipment such as crushing and grinding. The wastewater from lead and zinc mines is the main source of pollution, which includes wastewater from mining farms and wastewater from beneficiation plants. Concentrator wastewater includes: tailings water, concentrate overflow water, accident water, dressing plant flushing water, tailings pond seepage water, etc. There are different classification methods for wastewater treatment, but in principle, it can be divided into three categories: physical treatment, chemical treatment and biological treatment.

Polyurethane sieve plate is mainly used in industries: coal washing plant, coking plant, mine, river dredging, metallurgy, petroleum, etc. Advantages of polyurethane sieve plate (1) According to the shape of the material, the rubber sieve plate and screen can be designed with different hole shapes. (2) The rubber sieve plate and screen are light in weight, which is convenient for on-site loading and unloading. (3) The rubber screen and screen have greater resistance, which can reduce noise.

 The trommel is a common equipment for organic fertilizer screening. It is mainly used for the separation of finished products and returned materials, and can also achieve product classification, so that the products can be evenly classified. The trommel is a new generation of self-cleaning screening equipment. Screening of solid materials. It has the advantages of high screening efficiency, low noise, small dust, and convenient maintenance. Compost: various kinds of orange stalks, fallen leaves, grass, animal and plant residues, human and animal manure as raw materials, mixed with each other in proportion or mixed with a small amount of soil for aerobic fermentation and decomposing. Retting fertilizer: The raw materials used in retting fertilizer are basically the same as compost, but are fermented under flooded conditions.

The basic component of zirconium sand is zirconium silicate (ZrSiO4), which has a variety of properties suitable for casting raw sand, such as: (1) The surface is smooth, there are few cracks and pits, so the amount of binder consumed is very small. (2) Among all kinds of natural casting sand, its thermal expansion rate is the smallest, and the thermal stability at high temperature is excellent. (3) Not wetted by molten metal. (4) Good thermochemical stability, basically not eroded by metal oxides at the pouring temperature of general casting alloys. https://www.lzzgmachine.com/service-parts/product-knowledge/zirconium-sand-features-and-washing-equipment.html

As high-standard screening equipment, the screening machine can also be used for the screening and grading of raw materials and bean husks in large oil plants, as well as for the screening and grading of large-granular urea in chemical industry, powdery materials or pellet feeds in feed factories. It can also be used for the initial cleaning of raw materials in feed mills and the classification of intermediate products after secondary crushing in large and medium-sized feed mills. In addition, it can also be widely used in food, heavy alkali, large particle urea, small particle urea, ceramsite, zirconia, reduced iron and titanium powder, barite, food and spices, chemical industry, plastics, mining, rubber, wood and Screening and grading of raw materials and finished products in various industries such as plywood, medicine, sugar, mining, and paper. With the development of the market circular economy, screening and screening in the waste plastics industry are increasing day by day, and ...

 Let’s check its ingredients first! Among the mineral particles that make up granite, more than 90% are feldspar and quartz, among which feldspar is the most. Feldspar is often white, gray, and flesh red, and quartz is mostly colorless or off-white, which constitute the basic tone of granite. Both feldspar and quartz are hard minerals that are difficult to scratch with a steel knife. As for the dark specks in the granite, it’s mainly biotite, but also some other minerals. Although biotite is relatively soft, its ability to resist pressure is not weak. At the same time, their weight in granite is very small, often less than 10%. This is the material conditions under which granite is particularly strong. Therefore, sand with high compressive strength can be obtained by using granite sand. source: https://www.lzzgmachine.com/solutions/why-does-granite-machine-made-sand-have-high-strength.html

 1. When choosing, you should pay attention to the following two points : (1) If the power of the vibration motor is too small. The phenomenon of “small horse-drawn cart” will appear, causing the vibration motor to be overloaded for a long time. Its insulation is damaged due to heat, and even the vibration motor is burned. (2) If the power of the vibration motor is selected too large, the phenomenon of “big horse-drawn trolley” will appear, the output mechanical power cannot be fully utilized, and the power factor and efficiency are not high, which is not only unfavorable to users and the power grid, but also cause power waste.

The abrasive wear failure of the blades of the spiral sand washer is a common phenomenon in the sand washing equipment. The reason for this phenomenon is that the blades have been rubbed by materials for a long time and have been strongly impacted during the cleaning process, especially some larger particle sizes. The sand washing machine has a fast wear speed, and the wear is serious, and the blade surface will affect the normal production requirements of the sand washing machine. There are three main reasons for the failure of the spiral sand washer blade: 1. The external force on the sand washing equipment or the temperature change caused by the material may increase the internal stress of the spiral sand washing machine blade, resulting in carbide cracking. 2. When the spiral sand washing machine adopts the heat treatment method, cracks may occur on the surface of the casting, and continuous cracking may cause the blade to break and fail. 3. If the blade part of the spiral sand wa...

As high-standard screening equipment, the screening machine can also be used for the screening and grading of raw materials and bean husks in large oil plants, as well as for the screening and grading of large-granular urea in chemical industry, powdery materials or pellet feeds in feed factories. It can also be used for the initial cleaning of raw materials in feed mills and the classification of intermediate products after secondary crushing in large and medium-sized feed mills. In addition, it can also be widely used in food, heavy alkali, large particle urea, small particle urea, ceramsite, zirconia, reduced iron and titanium powder, barite, food and spices, chemical industry, plastics, mining, rubber, wood and Screening and grading of raw materials and finished products in various industries such as plywood, medicine, sugar, mining, and paper. With the development of the market circular economy, screening and screening in the waste plastics industry are increasing day by day, and ...

method to  slove the blockage of the screw feeder 1. Reasonably select the technical parameters of the screw feeder, such as the speed of the slow screw conveyor should not be too large. 2. Strictly implement the operating procedures to achieve no-load start and no-load parking; ensure that the feeding is evenly continuous. 3. Increase the discharge port or lengthen the end of the trough to deal with the problem of poor discharge or too late to discharge. At the same time, a small section of counter-rotating vanes can also be installed at the end of the material trough at the discharge port to prevent the material from being blocked at the end. 4. Make necessary arrangements for the materials entering the screw feeder to prevent large debris or fibrous impurities from entering the machine and causing blockage. 5. Reduce the lateral size of the central suspension bearing as much as possible to reduce the possibility of material blocking when the material passes through the central b...

  1. Ordinary quartz sand: The surface of ordinary quartz sand seems to have a layer of yellow skin, and some have large particles and strong fire resistance. It is a kind of quartz sand processed by the manufacturer after using natural quartz ore in the production process, such as washing and drying. No impurities can be seen in the quartz sand through the second water treatment filtration. It is the best choice for chemical water treatment. It can block the sundries suspended in the water and maintain the quality and beauty of the water. 2. Refined quartz sand: Refined quartz sand is a mineral made by the manufacturer after carefully selected quartz stone. According to different requirements of users, the range used is also different. But generally the main use of refined quartz sand is in glass products, because refined quartz sand is refractory and precision casting, especially suitable for fireproof glass materials.

Classified according to the strength of the magnetic field, magnetic separators can be divided into weak magnetic field magnetic separators, medium magnetic field magnetic separators and strong magnetic field magnetic separators. At present, the wet drum magnetic separator is the most widely used, and the wearing parts include drum skin, magnetic block, groove bottom, transmission gear, etc. The main reasons for the failure are that large-volume debris enters the magnetic separator, the magnetic block falls off, the performance of the magnetic block is degraded, and the lubrication effect is not good. (1) Large-volume sundries enter the magnetic separator. Large-volume debris enters the magnetic separator, which may scratch the cylinder skin in light cases, or jam the cylinder in heavy cases, causing the equipment to stop; in addition, there may also be holes in the tank body, resulting in ore leakage in the tank body. (2) The magnet block falls off. When the magnetic block in the dru...

 High-quality aggregates (coarse aggregates and fine aggregates, fine aggregates are sand): First, the shape of the particles should be good, and the senses should be good; second, the gradation should be reasonable. Especially for machine-made sand, high-quality machine-made sand products must not only meet the sand requirements of commercial concrete, but also meet the requirements of higher standards for ready-mixed mortar sand (ready-mixed mortar is an inevitable requirement in the future. On-site stirring will be phased out over several years). Reasonable continuous grading can meet the needs of high-quality concrete. Both are indispensable. The fifth condition for the success of the sand and gravel aggregate production line is that the aggregate product of the production line must meet the requirements of soil content. High-quality concrete has higher and higher requirements for soil content. The seemingly simple problem may be the reason for the failure of the project. Ther...

  The sand making machine has a feed particle size of 35-60mm, a production capacity of 12-360t/h, and a finished product particle size of 0-5mm. It is suitable for medium hardness materials such as river pebbles, basalt, pebbles, marble, and perlite. Sand-making processing, and widely used in chemical, building materials, construction, metallurgy, water conservancy and other industries. The impact sand making machine can easily realize the fine crushing and coarse grinding of various metal and non-metallic ores, cement, refractory materials, abrasives, glass raw materials, building aggregates, artificial sand making and various metallurgical slag. The principle is to let the stones collide with each other at high speed in the crushing cavity of the sand making machine, and the fineness of the finished product can be adjusted by adjusting the speed of the sand-making machine equipment.

The size of the dewatering screen has a great impact on the efficiency of the equipment. Generally, manufacturers have a set of solutions to meet the needs of different customers. There are many shapes of sieve holes in dewatering sieves, common ones are round, square and rectangular. Compared with sieve holes of other shapes, round sieve holes can pass through the sieve holes with the same nominal size. The particle size of the product under sieve is smaller. The particle size of the particles that actually pass through the round sieve holes is only the average size of the particles passing through the square sieve holes of the same size. The effective area of ​​the sieve surface of the rectangular sieve is larger. The production capacity is higher. When dealing with materials with more water, it can reduce the clogging of the sieve surface. . Therefore, when it is required that there is no fine powder in the sieve, strip and flake particles are allowed in the sieve, the material is ...

Rod mill grinding quartz sand has the characteristics of uniform strength, high efficiency and high sand purity. The use of crusher and rod mill together can efficiently produce quartz sand and machine-made sand. 1. The discharge particle size is controllable One of the reasons for choosing a rod mill instead of a ball mill for grinding quartz sand is the particle size of the finished product. For quartz sand grinding, the output particle size is usually between 40 meshes and 120 meshes, so it can be said that the particle size is not very fine. Therefore, we have to choose a rod mill, because the rod mill for grinding quartz sand is in surface contact with the material. 2. Grinding also has a scrubbing function In the purification process of quartz sand, a very important step is scrubbing, to wash off the impurities on the surface of quartz sand, and then select and purify. The use of a rod mill grinding quartz sand to process quartz sand can also play a role in scrubbing to a certai...

Jaw plate , also called tooth plate, is the key wear part in jaw crusher. A set of jaws usually consists of two parts, namely the movable jaw and the fixed jaw. According to the different models of jaw crushers, there are various types and sizes, and they are generally made of high manganese steel. Common aliases: jaw plate (moving jaw plate, static jaw plate), tooth plate, tooth plate, high manganese steel jaw plate, ultra-high manganese steel jaw plate, composite alloy jaw plate, wear-resistant jaw plate, jaw crusher jaw plate .

 White corundum is made from industrial alumina powder, which is smelted in an arc at a high temperature of more than 2000 degrees and then cooled. It is suitable for the manufacture of ceramics, resin-bonded abrasive tools, grinding, polishing, sandblasting, precision casting (corundum for precision casting), etc. It can also be used to manufacture high-grade refractory materials. The code “WA” is consistent with international general standards and national standards.  Most of them are for export, and a certain amount is also supplied to domestic users. White corundum micropowder processing line White corundum powder is hard and brittle and has strong cutting force. It can also be used as catalyst, insulator and precision casting sand. Several precautions should be paid attention to when grinding. 1. Physical and chemical utensils, spark plugs, heat-resistant and anti-oxidative coatings. 2. Due to its high temperature resistance, corrosion resistance, high strength and other ...

In the artificial sand processing production line, because the feed port of the sand making machine is relatively small, generally less than 5 cm, the configuration of the front crushing equipment is often essential. The jaw crusher and hammer crusher are often used equipment in the sand making production line. The jaw crusher can crush all kinds of soft and hard materials, the compressive strength is between 300-500Mpa, such as common granite, quartzite, diabase, river pebbles, iron ore, etc. The content of needle pieces in the discharge is relatively high. Generally speaking, it needs to cooperate with the impact crusher for shaping, so the configuration of jaw crusher + impact crusher is often used. Jaw crusher is often used as coarse crushing equipment in sand production line, followed by impact crusher or cone crusher, and then sand making machine for shaping.

Banana screen is a new type of screening equipment . The screen has large processing capacity and can be used for wet and dry screening to replace conventional inclined screens or horizontal screens. So far, two types of banana screens with single-layer and double-layer screens have been developed, and have been popularized in beneficiation and coal preparation plants. Compared with the conventional screening machine, the main advantage of the banana screen is that when the same area of ​​the screen surface is used, the processing capacity of the material can be greatly improved. The screen has been widely used in mineral processing and coal preparation plants that require increased screening capacity but cannot use large-volume screening machines due to plant space constraints. The working principle of the banana screen is similar to that of the single-layer thin sieve in some respects. The inlet end is an inclined surface, and the rear part is composed of several different inclined s...

The barite processing technology and the method of beneficiation and purification in the processing flow are mainly gravity separation methods. High-quality barite is extracted from barite ore by the gravity beneficiation method, and gangue and waste rock with a small specific gravity is discarded to improve the gravity. The specific gravity or grade of the spar ore, and then after dehydration treatment, it can enter the grinding process. Barite is a very important ore resource. Barite processing technology: Barite raw ore is washed, screened, crushed, graded, and deslimed, and then subjected to a jigging process to obtain better quality concentrate. The product grade can reach more than 88%. The crushing of barite generally uses a jaw crusher or impact crusher, and the fine crushing generally uses a counter-roll crusher. Barite is brittle and fragile, so in the crushing process, we recommend using a jaw crusher to avoid using an impact crusher or hammer crusher to crush barite to prod...

It works by using the reciprocating rotary vibration generated by the excitation of the vibrator. The upper rotating weight of the vibrator causes the screen surface to generate plane whirling vibration, while the lower rotating weight causes the screen surface to generate conical surface rotation vibration, and the combined effect makes the screen surface generate compound whirling vibration. Its vibration trajectory is a complex space curve. Adjusting the exciting force of the upper and lower rotating weights can change the amplitude. And adjusting the spatial phase angle of the upper and lower weights can change the curve shape of the screen surface movement trajectory and change the movement trajectory of the material on the screen surface.

Correct installation of the screen The installation structure of the screen should be selected according to the size of the screen aperture. For large holes (the recommended diameter exceeds 60mm), it is recommended to use a bolt-type fixing structure. Due to a large amount of material processed by the large-aperture screen, it has a greater impact on the screen surface. The fixed form of the screen with other structural forms is easy to loosen. After the screen is loosened, it strikes each other with the support beam, which shortens the life of the screen. Improper use will affect the service life of the polyurethane screen . After selecting the correct polyurethane screen, it needs to be used reasonably to maximize the performance and service life of the polyurethane screen. However, this is easily overlooked by many users when using polyurethane screens.

 Polyurethane screen contain highly wear-resistant polyurethane material with steel wire. Polyurethane elastomer is a new type of polymer synthetic material between rubber and plastic. It has both high strength of plastic and high elasticity of rubber. It was used in dewatering screen, to remove water for wet materials. Customized Applicable Polyurethane Screen Dewatering Screen Vibrating Screen Screen. Polyurethane screen panel for dewatering screen product advantages 1. Good wear resistance and long service life. Its wear resistance is 3~5 times that of steel sieve plate, which is more than 5 times that of ordinary rubber sieve plate. 2. The maintenance workload is small, and the polyurethane sieve plate is not easy to damage. And the service life is long, so the maintenance amount. And the maintenance and repair loss can be greatly reduced. 3. The total cost is low, although the same specification (area) of the polyurethane sieve plate is higher than the one-time investment of t...

  Cylindrical gear reducer The gear reducer for wheel sand washing machine is an external meshing involute helical cylindrical gear reducer produced according to the national professional standard ZBJ19004. , widely used in metallurgy, mining, lifting, transportation, cement, construction, chemical, textile, printing and dyeing, pharmaceutical and other fields. https://www.lyldmachine.com/cylindrical-gear-reducer-for-wheel-sand-washing-machine/

 Oil fracturing sand has high compressive strength and is mainly used for downhole support in oil fields to increase oil and natural gas production, and is an environmentally friendly product. The product has the advantages of high compressive strength, low density, good sphericity, high smoothness and strong flow conductivity. The specifications of petroleum fracturing sand products are: 20-40 mesh, 40-70 mesh, 70-140 mesh. In the field of petroleum, fracturing refers to a method of using hydraulic action to form cracks in oil and gas layers during the process of oil or gas production, also known as hydraulic fracturing. The overall fracturing sand production line is divided into five working stages, namely the raw material mining stage, the raw material drying and pre-screening stage, the raw material washing stage, and the concentrate drying stage. It can solve the problems of fracturing sand classification, washing, tail water purification, solid waste dry discharge, etc. The f...

After the diabase is broken into sand and gravel aggregate, it can be made into rubberized asphalt mixture, which has excellent high temperature resistance, low temperature resistance, and water resistance, so it is very suitable for laying highways and airport runways. There are many crusher equipments that can be used for rock crushing, such as jaw crusher, impact crusher, cone crusher, impact crusher, compound crusher, etc. What kind of equipment should be used to crush diabase? 1. First consider the hardness of diabase raw materials Dolerite has high Mohs hardness, above grade 6 or 7, and belongs to hard rock, so it is necessary to choose jaw crusher, cone crusher, impact crusher, etc. that can be used for hard rock crushing. If it is suitable for processing For the impact crushing and composite crushing of soft materials to process diabase, the equipment parts will wear out very quickly, and the parts may have to be replaced in half a month.   2. Secondly, consider the size of...

Equipment configuration of perlite sand production line with an output of 150 tons per hour One GZD1000*3600 vibrating feeder, one PE600*900 jaw crusher, one PXJ1400*1400 fine crusher, one perlite sand making machine, one YK1800*4800 vibrating screen, one XS300 sand washing machine . Features and advantages of perlite sand production line 1. According to the actual production needs, carry out professional plan configuration, the production line runs smoothly, the process flow runs safely, and the output is guaranteed. 2. A variety of perlite particle size specifications can be produced, the finished product has good grain shape, high sand production rate, excellent product quality and price, the needle flake content of the product is reduced to 4.7%, the grain shape is uniform, the market is wider, and the application value is further improved. 3. Select good materials, wear parts with good wear resistance, less replacement, no delay in construction period, and low operating costs. 4....

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  The recent aggregate prices of sand and gravel in Hubei Province Machine-made sand The reference price of medium sand (3.0-2.3mm) is 65.00 yuan/ton. The price has remained stable recently. The supplier is Badong County Shengyao Mining Co., Ltd. The reference price of coarse aggregate (16-31.5mm) is 63.00 yuan/ton. The price has remained stable recently. The supplier is Badong County Shengyao Mining Co., Ltd. The reference price of coarse aggregate (10-20mm) is 63.00 yuan/ton. The price has remained stable recently. The supplier is Badong County Shengyao Mining Co., Ltd. https://www.lzzgamerica.com/news/recent-price-changes-of-natural-sand-and-artificial-sand

Chalcopyrite is a copper-iron sulfide mineral. It often contains trace amounts of gold and silver. Crystals are relatively rare and are tetrahedral-shaped, mostly irregular granular and dense massive aggregates, as well as kidney-shaped and grape-shaped aggregates. Copper yellow, often dark yellow or mottled. The streaks are black with a greenish tint. Chalcopyrite is a relatively common copper mineral, which can be formed in different environments, but it is mainly the product of hydrothermal action and contact metasomatism, and it can often form deposits of a certain scale. The origin is all over the world. In industry, it is the main raw material for copper smelting. In the field of gemology, it is rarely used alone, occasionally as a substitute for pyrite. In addition, it often participates in the composition of some colored stones, inkstones and jade. The high-efficiency spiral chalcopyrite washing machine is mainly used in the washing, grading, impurity removal, and the washing o...