1. How should the filter press be selected correctly? First, determine the solid content and processing capacity of sewage. Then determine the volume and filter area of the filter press required. Take the chamber filter press as an example, if it processes 100 cubic meters of sewage per hour with a solids content of 8%, you need a filter press with a filter chamber volume of 8 cubic meters, and you can choose a filter press with a filtration area of 500 square meters. 2. How much moisture content of the filter press mud cake is qualified? The filter press can realize the solid-liquid separation of sludge. Before the material enters the filter press, the flocculant is added to condense the solid matter together, thereby speeding up the filtering speed and improving the filtering effect. 3. How long is the service life of the filter cloth? Generally, the service life of the filter cloth is 3-6 months. In order to ensure the filtering effect and extend the service life of the filter cloth, the filter cloth should be cleaned and dried. When the filter cloth is not used for a long time, it should be stored in a dry place, and…
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A large amount of stone powder will inevitably be produced after crushing, screening and sand making in the process of producing mechanism sand. The content of stone powder exceeding the normal ratio will reduce the strength of concrete and affect the quality of concrete buildings. Therefore, it is necessary to control the content of stone powder in machine-made sand. The soil, impurities and excess stone powder covered on the surface of the machine-made sand are moved and improve the cleanliness of the sand and control the content of stone powder through water washing, which can meet the requirements of high-standard machine-made sand. The customer from New Zealand reached the cooperation with Longzhong Heavy Industry , because Longzhong has configured the specific 150t/h sand washing and recycling solution for the customer, which has solved the real needs of the customer. The program process is: stone powder cleaning-fine sand recovery-tail water purification-solid waste dry discharge. At present, the installation and commissioning of the project has been completed and officially put into operation. Project overview Material: stone powder Processing capacity: 150t/h Water consumption: 200-250m³/h Stone powder content: ≤10% Final needs: stone powder content < 3% Main equipment configuration Sand washing and dewatering machine,…
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Tailings dry discharge screen, thickener, and filter press are the most effective equipment for treating quarry mud, muddy water from sand washing plant, and sand-coated soil water washing mud. These equipment use the principles of vibration dewatering, mud separation, flocculation purification, and extrusion dewatering, which can quickly squeeze out the water in the mud, and the clear water can be recycled. This set of procedures can be automated, simple to operate, without manual guards, and solves the mud treatment problems and environmental protection problems of stone yards and sand washing plants. Why use the wastewater treatment system? 1. The treated tail water becomes clean water, which can be recycled for sand washing, without wasting water resources and reducing water costs. 2. The dry mud pressed out by the filter press does not drip and can be directly packaged and transported. 3. The process flow can be designed on-site according to the requirements, and the sludge treatment process can be automated. Factors to be considered in the treatment of sand washing tailing cement slurry 1. The amount of sand in the mud. If the solid content of the mud in the sand field is 30%, and the fine sand in the…
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The heavy duty rotary scrubber is mainly used for the dispersion of mineral mud, the removal and scrubbing of impurities on the surface of minerals, and the mixing and pulping. The scrubbing machine can be equipped with a sand-gravel wet production line, which can play an important role in the production line to facilitate better classification and magnetic separation in the later stage and can produce more pure products. At the same time, the scrubbing machine is also a more effective sand washing equipment for quartz sand processing. Working principle The slurry enters the cavity of the scrubber through the feed pipe. Under the powerful stirring action of the impeller, the slurry produces violent turbulence. The mineral particles have huge momentum in them, and they generate violent friction and collision with each other. The impurities wrapped on the surface of the mineral grains are not strong, so they are easily peeled off the mineral surface after friction and impact. The cement on the mineral surface will loosen and disintegrate after being soaked in water and then through strong friction and collision between the mineral particles, so as to achieve the separation of clay and mineral particles. These film impurities and clay…
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The stone washing machine in the Singapore construction industry. Nowadays, housing construction has become a trend, and the amount of sand used has increased. mined sand and gravel contain a certain amount of humidity and impurities and are usually not used. To use it, it needs to be processed by separation and cleaning equipment before it can be used, and the spiral sand washer is also used here. What is the advantage of the stone washing machine? The device has a simple structure and stable performance. The impeller drive bearing device is isolated from water and materials, avoiding damage to the bearing caused by water, sand, and pollutants. Each component is manufactured according to standards, with almost no wearing parts and a low failure rate, so continuous production can be achieved without long maintenance during the production process. How can the stone washing machine clean and process 200 tons of sand per hour? Untreated sand contains a lot of soil, impurities, and moisture. When cleaning sand, the equipment can clean sand and gravel with different particle diameters and densities. The sedimentation speed, fine particle size, and density of the sand and gravel in the fluid are different, and it can…
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In recent years, the gravel and sand industry has flourished, and many users have invested in the construction of factories. When processing all kinds of stone, some small waste materials are generated, called stone powder, which is a recyclable resource. One ton of stone powder can wash 0.8-about 0.9 tons of finished sand. The sand washing machine equipment mainly removes impurities through the rotation of the impeller. There are the single wheel, double wheel, and three wheels. The user’s raw materials contain a large amount of stone powder and sand. The sand washing machine needs to effectively control the contained stone powder within a reasonable range to configure high-performance concrete. This kind of concrete is used in construction, roads, construction, water conservancy, and other industrial sectors. Spiral Stone Washer Machine Spiral sand washer is a commonly used sand washing equipment. The structure of the spiral sand washing machine determines its purpose and method of use. When washing sand, when the spiral sand washer is running, one side of the spiral blade is to inject water resources, and the other side is to discharge rocks, mud, sand, and other wastes, and then deposit on the bottom of the spiral sand washer.…
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The sand washing aggregate belongs to different operation purposes. The cleaning is an action performed when the backwashing efficiency is reduced. The backwashing is to remove the contaminants captured in the filter and make the filter The function can continue to operate, as detailed below. 1. Backwash operation The efficiency of the filter is mainly judged based on the decrease of the circulation pipeline flow rate per unit of time. In practice, the pressure rise of the filter is used to judge the efficiency of the filter, which is the so-called pressure difference or head loss. This is because, in the circulating filtration of pool water, pollutant particles are accumulated and collected in the filter layer of quartz sand, which causes the surface of the quartz sand particles to thicken, which hinders the flow of water and increases the pressure of the filter. With the help of backwashing to eliminate accumulated pollutants, reduce the pressure of the filter, and increase the filtration flow; the main consideration is because the filtration system of the swimming pool is a cyclic filtration type, which not only takes care of the conditions of filtration efficiency, It is also necessary to consider the ability to promote…
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In the washing silica sand line, the silo is a very important part, which plays the role of transfer, buffer, and adjustment. In the production process, it is necessary to ensure continuous, uniform, and smooth feeding, and the maximum volume is required to prevent the accumulation of dead materials, which requires the design of the silo to be reasonable. This article shares the key points of silo design. Silo Classification The silos on the crushed stone production line mainly include raw material silos, adjustment silos, and product silos. 1. Raw Material Silo The raw material silo is generally square cone-shaped, enclosed on all sides, and welded by steel plates. It is generally used before the vibrating feeder. The size of the raw material silo is designed according to the processing capacity of the primary crusher and the viscosity and humidity of the material. Generally located on the ground. 2. Adjust the silo The adjustment silo is generally made of the steel frame structure or reinforced concrete. It is located after the primary crusher and before the secondary or tertiary crusher. It plays a role of transfer adjustment, which can achieve the purpose of a uniform and stable feeding, and can…
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In the process of processing artificial sand, the bucket elevator sand washer is usually used. The bucket wheel sand washing machine has high cleanliness. During the cleaning process, the transmission part can be separated from water and stones, so the transmission part will not be damaged by water and stone pollution, reducing the failure rate of the sand washing plant. 1. Product Advantages The bucket elevator sand washer itself has fewer vulnerable parts, and the maintenance cost of the equipment during the production process is very low. With the expansion of the application range of bucket-type sand washer, many investors have joined the wheel sand washer, and the price of bucket sand washer on the market has become more and more diversified. 2. Manufacturer Many users do not have a target manufacturer when they buy a bucket elevator sand washer, so they will blindly choose a manufacturer. For users, choosing a good sand washing machine manufacturer is not easy. Users know that elevator sand washing machine produced by large sand making machines should have better quality, but they think that equipment produced by large manufacturers is more expensive, so they don't consider it. This is the wrong idea. 3. Price…
read more >> In the treatment of wastewater in sand and gravel systems, filter presses are often used as the end mechanical treatment mode of solid-liquid separation. The material is filtered by pressure, especially for the separation of sticky and fine substances, which has its unique advantages. This article mainly revolves around its daily maintenance, maintenance, and production failures. I hope it will be helpful for your production. 1. Filter press structure and working principle Filter press is a commonly used solid-liquid separation equipment, which is widely used in sludge dewatering projects. It is mainly composed of transmission part, filter plate part, pressing plate part, thrust plate part and pressing device (mainly hydraulic pressure Composed of tightening device), hydraulic system, electronic control system and auxiliary parts. The filter cloth is installed on both sides of the filter plate. Under the action of the pressing device, the filter plate is pressed between the pressing plate and the thrust plate. A closed filter space is formed between every two filter plates. When the feed pump pumps the material into the closed filter space, under the pressure of the feed, the liquid phase is separated from the liquid filter hole through the filter cloth, and the…
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Site Installation Requirements 1. Power The sand washer is a device that needs to be powered on, and the power of the sand washer is relatively large. When choosing a location, it is necessary to consider whether there is a stable power supply that is sufficient to support high power around and shorten the transmission line as much as possible. If possible, try to use the power grid. 2. Water source The main job of the sand washing machine is to clean the stone, so it cannot do without water, so it has a great demand for water. When choosing the installation location, try to choose a place with sufficient water. 3. Smooth traffic The main job of the sand washer is to clean the stone. The washed stone needs to be sold directly, so transportation around the sand washer is also very important. Choose a station connected to a public road. If you use water transportation, please choose an existing dock or a location suitable for the construction of the dock. 4. Geology For safety reasons, the location where the sand washer is installed should have better engineering geological conditions as much as possible, avoid construction under faults, landslides,…
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The aggregate sand washer is widely used in the desliming and screening operations of a large amount of sand and gravel used in construction sites, sand and gravel plants, prefabrication plants and hydropower sites, and can also be used for ore separation operations. It can effectively process materials within 0-30mm, and can separate the soil and ash on the materials into clean materials. This aggregate sand washers have the advantages of high washing efficiency, simple structure and convenient maintenance. The aggregate sand washer's cleaning requirements for sand and gravel materials are mainly determined according to the mud content, particle size of the materials and the cleanliness to be achieved. If the sand and gravel contains large non-ore-bearing waste rock, then it is necessary to wash the ore to make the fine part of the demineralization and then conduct ore dressing; If the sand itself contains too much mud, resulting in crusher, sieve and silo mouth blockage, resulting in the production can not proceed smoothly, this situation can be used to wash the method to solve. Does the machine-made sand have to be washed with water? Yes. The current sand making process still uses large stones to be coarsely crushed, medium…
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