Screening efficiency impact factors Reject rate Basket type Slots gap Bar depth/angel Velocity Open area Rotor Pulse Pressure pulse forces the stock through the screen Vacuum pulse draws disturbing components away from the screen surface, removing them from the screen area The higher the rotor peripheral speed, the greater the pressure pulse The higher the…

Valve Brief Introduction: The valve is a mechanical device that controls the flow, flow direction, pressure, temperature, etc. of the flowing fluid medium. The valve is a basic component in the pipeline system. Valve pipe fittings, like pumps in technology, are often discussed as a separate category. Gas switch and faucet are the simplest valves.…

1. When the ash content of the paper is too low, the degree of beating can be increased to seal the paper to increase the filler retention. 2. The paper is floating on the cylinder surface because the adhesion between the paper sheet and the cylinder surface is not enough, and the beating degree can…

i-CTMP Pulping principle: The cleaned raw material is first softened at high temperature and then filamentized at high temperature with a filamentizer.  The whole process needs to be performed at high temperatures to soften the fibers and reduce the bonding force between them, avoiding or reducing the possible damage to the fibers during high temperature filamentation.…

CTMP Pulping principle： Wood chips are impregnated with selected chemicals at a certain temperature to soften and swell the amorphous areas of lignin, hemicellulose and cellulose in wood. When the temperature reaches the“glassy”conversion point of lignin , the fibers are separated from the wood matrix by the compression pulse action of the fluted disc and other mechanical actions…

1. The purpose of refining?  Answer: According to the quality requirements of paper or cardboard and the type and characteristics of the pulp used, physical methods are used to improve the shape and properties of fibers under controlled conditions, so that the manufactured paper or cardboard meets the expected quality requirements. 2. The main task…

In order to produce good paper, paper making equipment must be well maintained. The following is to share with you the contents that paper making equipment personnel must read: 1. The general requirements of the equipment components, sound, power foot, instrument spirit, complete data. 2. Equipment maintenance of the “cross homework” cleaning, lubrication, adjustment, fastening,…

When producing the relatively high-grade paper grades, the part of the stock sent from the chemical pulping workshop to the paper workshop produces white water, which affects the toning and sizing of the paper machine due to the high residual chlorine content. Generally, it is directly reused in the paper workshop, and this part of…