高岭土陶瓷原料及抛光废水泥浆脱水处理设备案例

2019-04-16

The new high-pressure kaolin sludge dehydrator is used for kaolin sludge dehydration treatment in ceramic factories. The filter cake contains 35% to 55% water. Kaolin ceramic raw materials are dehydrated: quartz sand kaolin ceramic wastewater, quartz sand mine wastewater treatment sludge dehydration, ceramic raw materials, ceramic production wastewater, polishing wastewater treatment, mud and water separation, mud dehydration.

Kaolin sludge dewatering machine has advanced structure, convenient operation and maintenance, 24-hour automatic operation, and is suitable for dewatering of high-concentration industrial sludge and domestic wastewater.

高岭土泥浆脱水机

New high-pressure kaolin slurry dehydrator for kaolin slurry dehydration in ceramic factories! 高岭土泥浆脱水处理

3. Working Principle of a Belt Filter Press:

Sludge is pumped into a dynamic (or static) mixer, where it is mixed with a 0.05-0.1% anionic (cationic) flocculant solution. After sufficient reaction, the tiny solid particles (or suspended matter) in the sludge slurry aggregate into larger floccules. The bound water and surface water between the materials are separated into free water. The material is then conveyed and spread onto the extended gravity pre-dewatering zone (or belt thickener) filter screen. Under the action of gravity, the free water seeps through the back of the filter screen and separates, forming a stagnant sludge. The sludge reaches the maximum pressure in the dewatering zone. As the mesh belt moves, it is clamped between the upper and lower mesh belts. It passes through the filter belt with adjustable tension, the rotating rollers of gradually decreasing diameter, and the counter-pressing rollers, where a continuously increasing and slowly increasing counter-roller pressure and shearing force are applied. Under the action of force, the water in the slag (mud) slurry is squeezed out by step-by-step pressure increase through the wedge-shaped area, low-pressure area, medium-pressure area, high-pressure area and strong roller squeeze area. Finally, the filter cake with low water content is formed and discharged. It is scraped away by the scraper plate, and the upper and lower filter belts are separated. The trace particles in the pores on the filter surface are removed by high-pressure flushing water and roller brushes, and then continue to enter the next dehydration cycle.

高岭土污泥脱水机

Working principle diagram of belt filter press:
带式压滤机工作原理

① Sludge Flocculation

To improve sludge dewatering properties, improve filter cake properties, and increase water permeability, sludge requires physical and chemical treatment. This machine utilizes an advanced, new dual-process flocculation device to achieve optimal flocculation results. This method not only produces large, tightly bound flocculated agglomerates, but also significantly reduces reagent consumption, lowers operating costs, and offers significant economic benefits.

② Gravity Concentration and Dewatering Zone

Sludge is evenly fed into the filter screen through a distribution hopper. As the filter belt moves forward, free water, under its own weight, flows through a sufficiently long gravity free dewatering zone into the receiving trough. This gravity dewatering section, also known as the highly concentrated section, primarily removes most of the free and interstitial water in the sludge, reducing its fluidity and facilitating its thicker accumulation on the filter screen, thereby enhancing its ability to withstand pressure. ③ Low/Medium-Pressure Dewatering Zone

After gravity dewatering, the sludge loses its fluidity almost completely. As the filter belt moves forward, the sludge is carried from the wedge-shaped zone onto the porous rollers. The gap between the upper and lower filter belts gradually decreases, causing the material to experience slight pressure, and the filtrate begins to overflow from both sides of the filter belt. As the filter belt moves, the pressure gradually increases, which also gradually enhances the extrusion stability of the flocs.

④ High-Pressure Dewatering Zone with Nip Rollers (or Belts)

After leaving the medium-pressure zone, the sludge enters the high-pressure zone. Here, it is squeezed by one to three sets of nip rollers (or belts). The strong compression significantly reduces the sludge's volume, fully squeezing out the interstitial free water within the sludge, forming a filter cake with a high solids content.

污泥脱水机脱水效果

Quality Assurance:

1. The main unit frame is constructed from high-quality, nationally standardized square tubes, securely welded together. The surface undergoes a high-strength anti-corrosion treatment, ensuring acid and alkali rust resistance for over 10 years.

2. The main unit body is constructed from high-quality stainless steel, including the main dewatering rollers, fenders, water collection trough, waterproof cover, nozzles, and other components.

3. The bearing housing is fully sealed from high-quality cast iron, and the bearings are double-row Dalian Metallurgical bearings with a three-year warranty. The squeeze rollers, drive rollers, and guide rollers are constructed from high-quality seamless tubes covered with high-quality, wear-resistant rubber, also with a three-year warranty.

4. The filter screen is selected based on the physical properties of the sludge. This machine utilizes a high-quality filter screen that is strong, permeable, non-clogging, smooth, with a high solids recovery rate, and easy to clean and assemble.