Industrial silicon powder centrifugal dehydration equipment, silicon powder solid-liquid separation equipment, silicon powder centrifugal separation equipment

Description :

　　Industrial silicon powder centrifugal dehydration equipment, silicon powder solid-liquid separation equipment, silicon powder centrifugal separation equipment

　　Source description of silicon powder wastewater mixture: During the cutting process, polyethylene glycol (usually used as a medium due to its high viscosity, low cost, easy availability, and ability to prevent powder particle agglomeration) drives the silicon carbide abrasive to cut the single crystal silicon rod. After cutting, the polyethylene glycol liquid will carry out the used silicon carbide abrasive, and at the same time, due to the cutting effect, a small amount of silicon powder and metal debris will be produced, mainly composed of polyethylene glycol (200-400), silicon carbide (SiC), and single crystal silicon (Si) (bicrystalline silicon). These small impurities are also carried out by polyethylene glycol, forming a mixed liquid composed of polyethylene glycol, diamond sand, and a small amount of silicon powder and other impurities. The silicon crystal element wire cutting waste liquid to be studied.

　　The characteristics of silicon wafer wire cutting waste liquid are high viscosity, fine silicon powder, and metal debris, making it generally difficult to separate. After several years of research, the WL series horizontal screw centrifuge specially developed by Lishui Ruichen Company can basically meet the process requirements.

　　The industrial silicon powder centrifugal dewatering equipment, abbreviated as the horizontal screw centrifugal dewatering machine, is mainly composed of a drum, a screw, a differential system, a liquid level baffle, a drive system, and a control system. The separation principle is that the horizontal screw centrifuge uses the density difference between the solid and liquid phases to accelerate the settling speed of solid particles under the action of centrifugal force to achieve solid-liquid separation. The specific separation process is that the sludge and flocculant solution are sent into the mixing chamber of the drum through the inlet pipeline, where they are mixed and flocculated (if the sludge is added before the pump or the pipeline after the pump is added, the flocculation reaction has been carried out in advance).

　　Principle of centrifugal dewatering of silicon powder (Figure 1): Due to the high-speed rotation and frictional resistance of the rotor (spiral and rotary drum), the sludge is accelerated inside the rotor and forms a cylindrical liquid ring layer (liquid ring zone). Under the action of centrifugal force, solid particles with high specific gravity settle on the inner wall of the rotary drum to form a mud layer (solid ring layer). Then, the relative velocity difference between the spiral and the rotary drum is used to push the solid phase towards the cone end of the rotary drum. After pushing out the liquid surface (shore zone or drying zone), the sludge is dehydrated and dried, pushed to the discharge outlet, and the filtrate is discharged from the large end of the rotary drum through the reflux pipe, achieving solid-liquid separation.

　　Advantages of Structural Design for Industrial Silicon Powder Centrifugal Dehydration Equipment:

　　1. The design is compact, and the dewatering machine includes devices such as an electrical control cabinet, a metering tank, and a flocculation mixing tank.

　　2. Centrifugal dewatering machine is suitable for sludge in industries such as municipal sewage, food, beverage, chemical, leather, welding materials, papermaking, printing and dyeing, pharmaceuticals, etc.

　　3. Less faults, less noise and vibration, simple operation

　　4. The centrifugal dehydrator occupies a small space, making it easy to maintain and replace; Small weight, easy to transport, and not easily clogged.

　　5. It has the function of self-cleaning. No need to clean to prevent filter clogging, reduce flushing water usage, and minimize internal circulation burden.

　　6. Proficient in dewatering oily sludge and operating at low speeds.

　　7. The speed of the spiral shaft is about 2-3 revolutions per minute, with low electrode consumption.

　　8. The replacement parts only include the spiral shaft and the floating ring, which have a long service life.

　　9. Through the electric control cabinet, it is linked with the infusion machine, mud pump, dosing pump, etc. to achieve 24-hour continuous unmanned operation.

　　10. Short daily maintenance time, simple maintenance tasks, and long-lasting durability.

　　11. The body is almost entirely made of stainless steel material, which can maximize the service life of the equipment.

　　The silicon powder sludge dewatering machine and equipment produced by Lishui Ruichen Company have low operating costs, large processing capacity, strong corrosion resistance, and low moisture content in the filter cake separated by centrifugation. The separated sewage can be turned into clean water, which can achieve the effect of direct discharge. It has been put into operation in many large silicon powder plants in China and has been well received by customers. Our equipment's effectiveness in separating silicon powder slurry has led more and more mining plants to choose us, such as a silicon powder plant in southern Zhejiang (we can take you to visit the customer's sewage treatment site together). We have selected multiple horizontal screw centrifugal dewatering equipment from our factory, which has good operating effect. The manufacturer directly connects with you. Welcome to consult.

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• Industrial silicon powder centrifugal dewatering equipment