In pulp and paper production, stable material feeding is essential for maintaining a reliable and continuous process. This becomes even more important when wood chips, fibers, or other raw materials need to enter a softening or treatment system operating at elevated temperature and pressure. Under these conditions, the feeding system has to do more than…
A screw feeder may look relatively simple from the outside, but in a modern pulp mill its job can be far more demanding than merely conveying raw material from one piece of equipment to another. When fibrous material has to enter a pressurized steaming, impregnation or refining system, the feeder must handle several tasks at…
A chip washer can remove a great deal of dirt from wood chips, but washing creates another problem: the chips leave the washer carrying a considerable amount of water. That water should normally be removed before the chips move to the next stage of the pulping process. This is where a wood chip dewatering screw…
A ragger, also known as a pulper ragger, rope ragger, or hydrapulper ragger, is used to continuously remove stringy and entangling contaminants from a hydrapulper during waste paper pulping. Recovered paper rarely enters a paper mill completely clean. Depending on the raw material, bales may contain steel wire, plastic film, packing straps, string, textile fibers,…
In wood chip pulping production, the quality of raw materials directly affects the efficiency of subsequent processes, including cooking, refining, and pulp quality control. During actual operation, many pulp mills face a common challenge: wood chips often contain unwanted impurities such as stones, metal particles, soil, and other foreign materials. These contaminants not only reduce…
What Is a Chip Bin / Steaming Bin Discharger? A Chip Bin / Steaming Bin Discharger is a critical piece of equipment used in modern pulp mills to ensure the continuous and uniform discharge of wood chips, bamboo chips, and other lignocellulosic raw materials after steaming and softening. It is widely applied in chemical pulping,…
What Are Centri-Cleaners for Low Consistency Pulp? Centri-Cleaners for Low Consistency Pulp, also known as LC Cleaners (Low Consistency Cleaners), are one of the most important cleaning systems used in modern pulp and paper mills. Based on the hydrocyclone separation principle, LC cleaners operate at a pulp consistency typically ranging from 0.4% to 1.2%. By…
Why Is a Reliable Feeding System Important in Pulp Production? In modern pulp and paper production, stable material feeding is essential for maintaining production efficiency, reducing energy consumption, and protecting upstream equipment. One common challenge faced by many mills is steam backflow. Uncontrolled steam leakage not only affects workplace cleanliness but can also increase equipment…
In modern paper manufacturing, most mills focus on machine speed, pulp consistency, white water recovery, and energy consumption. However, one issue is often underestimated — foam. Especially in waste paper pulping, white water circulation, flotation deinking, and high-speed paper machines, excessive foam can seriously affect production stability, paper quality, and chemical efficiency. As the paper…
Equipment Overview The flotation deinking cell is the core equipment in the waste paper deinking pulping process. It is mainly used to remove ink particles, stickies, fillers, and other impurities from waste paper pulp through the flotation process. Its core function is to utilize air bubbles to adsorb ink particles, thereby purifying the pulp and…
