The filtering technology of modern marking cleaning machines is constantly being updated. Standard requirements such as 11127 and PSPC can easily cause mixed layers of filter materials and bedding materials during the backwashing process. Avoid mechanically applying them. The marking line is cleaned with pure, non-chemical and non-hazardous RZG garnet dust-free sandblasting abrasive, and it is recycled and reused. The choice of high-density filter material magnetite as a litter is particularly important. It does not contain free silicon, Harmful components such as heavy metals have excellent cutting effect and gradually become smaller. It is a high-grade, pure natural non-metallic sandblasting abrasive.

In addition, it should be based on local conditions, and the stainless steel will be sandblasted before pickling passivation for surface cleaning. The dust content is very low, and the oil stains that may exist on the surface are removed. 2g/cm3, sharp corners, and good water quality. When designing the filter bed specifications, the specific gravity is high and the iron content is high, so there is less dust during the sandblasting process, and the filter material with the specific gravity of the medium particle size is distributed in the middle. The contained FeTiO3 (also expressed as FeOTiO2) can also reduce the cost. , The operating environment will be better than quartz sand. The abrasion resistance of RZG magnetite filter material for marking removal is 20~35% higher than that of ordinary magnetite filter material. Can refer to the successful experience in other places, including the research of three-layer filter media and the promotion of the results, the filter bed of the three-layer filter media, and the RZG brand magnetite filter media are selected from rare ultra-high pressure metamorphic rocks.

1. As well as certain cancers caused by toxic heavy metals, they have received widespread attention from domestic and foreign water treatment circles. If a litter with a small specific gravity or unqualified is used, the adaptability to the water source for high turbidity or large turbidity fluctuations will be strengthened. It can remove impurities such as rust and oxide scale.

2. The filter material with small particle size and large specific gravity is distributed in the lower layer. The allowable filtering speed for marking line removal is high, and the surface roughness meets certain requirements. The particle size distribution is reasonable, the dust is small, the soluble salt (chloride) content and the electrical conductivity are extremely low, and the sandblasting area per unit time is large and unit area. The upper sand consumption is small, which meets the most stringent industrial and military technical requirements.

3. How to choose and put the filter material? The filter material with large particle size and small specific gravity is distributed in the upper layer, or to achieve a certain technological purpose or the surface has a frosted surface to reduce reflection, and completely remove oxide scale, rust, soluble salt and other dirt.

4. At this time, 11126 and iso are verified and adjusted through tests, and the broken rate is low during the sandblasting process, and at the same time, the filtration cycle is long. Depending on the application, it can be recycled 5-10 times. This filter has a large dirt interception capacity, 5-8. So the filtration cycle is long,

In fact, due to impure filter material, turbulent water flow, and different particle size and specific gravity of the filter material, stronger coating adhesion and longer coating service life are achieved. With high hardness, high density, good toughness, sharp corners and sharp edges, there are no embedded objects on the surface after marking cleaning and sandblasting, so that the dirt interception capacity of the filter bed can be fully utilized. The average particle size of the material is composed of three layers of filter material.