Overview
The LD-YLD Canadian Standard Freeness tester is a JINGHUAYIQI brand standard dissociation tester for the determination of pulp dissociation. It is mainly suitable for test values for the production control of milled wood pulp, and is widely applicable to the change of water filtration properties of various chemical pulps during Refining and fine pulp processes.
Features
1. Test values suitable for the production control of milled wood pulp; 2. Widely applicable to the change of water filtration properties of various chemical pulps in the process of Refining and seminal pulp; 3. Reflect the surface condition and swelling of the fiber; 4. The water filtration chamber and measurement funnel are installed on a fixed bracket; 5. All 99% of the materials of the standard free degree tester are made of 304 stainless steel, which has a long service life; 6. Self-calibrating can be achieved.
Principle
Freeness is the determination of the water filtration of a dilute Pulp suspension (containing 3 g of absolute dry pulp in 1 L of water), that is, the degree of dissociation or the rate of water filtration, which reflects the surface condition and swelling of the fiber. Canadian Standard Freeness refers to the water-sensitive performance of 1000ml of Stock water suspension with a content of (0.3 +/- 0.0005) % and a temperature of 20 ° C under specified conditions. The volume (mL) of water flowing out of the side tube of the instrument represents the CSF value.
Applications
Refining, Refining and Refining Processes
Standards
TAPPI T227, ISO 5267/2, AS/NZ 1301, 206s, BS 6035 part 2, CPPA C1, SCAN C21, QB/T1669-1992
Steps
1. Install the slurry; 2. Open the bottom cover; 3. Open the ventilation valve and the slurry flows out; 4. Measurement of the volume of water flowing out of the side pipe.
Notice
• The processing process of the pulp will produce a large number of fine fibers, sometimes causing an abnormal increase in the degree of dissociation (false degree of dissociation), the value is less than 100ml; • The value of the degree of dissociation is not necessarily related to the water filtration performance of the pulp on the paper machine; • The result of the measurement is related to the test conditions such as Preparative, temperature and mass of water of the Stock; • The upper end of the opening of the rate measurement funnel of the lower bracket is placed with a level to find the level to reduce vibration.
