The function of the environmental protection paper machine forming device, also known as the wire part, is an important part of the paper machine. The paper suspension forms the paper sheet on it. The quality of the paper and the normal production of the paper machine are all related to the operatio
The spiral surface coating is repaired using the multi-layer wood plasma surfacing technology, which uses a plasma power source to form a high-temperature arc column on the damaged surface, melting the composite coating of tungsten carbide alloy powder, thereby repairing and restoring scars on the m
Every link in all walks of life is inseparable from paper, and it is inseparable from the papermaking industry and papermaking machinery. The papermaking machinery will be subject to different degrees of wear and tear in every link when it is working. In this issue,。From a log cutting tool, the blad
The multi-layer slanted mesh former distributes pulp in multiple central pulpers and sizing in layers in the headbox. It adopts unique rectification and layering technology to realize the layered forming of fibers in the forming area, which can achieve two-layer, Three or more coats of sizing. In the production of slanted nets, the on-site control of the quality of papermaking and the process parameters of normal operation should be carried out.
Pulping is to separate the fibers from the raw materials of trees, make fiber pulp, and then bleach; papermaking is to dilute the fiber pulp, shape, press, dry, and then make paper. Both processes discharge large amounts of wastewater. The wastewater produced by pulping is seriously polluted. The pollutant concentration in the wastewater discharged during pulp washing is very high, the BOD is as high as 10-36g/L, and it contains a lot of plant fibers, inorganic salts and pigments. The wastewater discharged from the bleaching process also contains a large amount of acid and alkali substances. The wastewater discharged from the paper machine contains a large amount of fibers and fillers and sizing materials added during the production process.
When the cutting resistance of the tissue paper cutter increases and the cutting sound changes obviously, it means that the blade has been blunt, and the blade grinding should be replaced in time.