quaternary screen reject consistency

quaternary screen reject consistency

VALMET Screen Book Bowater Great Northern Paper Inc. DIP 4

VALMET Screen Book Bowater Great Northern Paper Inc. DIP 4

Quaternary Screen Jury 11, 1997 ITEM EQUIPMENT 1.1 Valmet Pressure Screen TAP 25 1 , 1 .M main motor, type=B3/B5, included Function and sizing data Tl =Tertiary screen with profiled slot basket Accept consistency Accept production/each, 100 % Flow through slot 0.53 m/s, Accept flow/each Min. feed pressure/nominal pressure drop

LOW ENERGY SHIVE SEPARATION EVALUATION OF A NEW

LOW ENERGY SHIVE SEPARATION EVALUATION OF A NEW

and diluted to a consistency of 0.5 %, sample A. 2) Initially the P1 screen was operated in recycle mode to enable the minimum reject rate to be determined. The screen was then operated with rejects and accepts being split and sent to separate tanks, samples B C. 300 litres of sample B was also collected to provide the feed pulp for the Shive

Pulp  Paper Installations  Vincent Corp

Pulp Paper Installations Vincent Corp

Aug 12, 2010the consistency to the 45% range, significantly reducing hauling and landfill charges. 1999 Minas Basin Pulp, Hantsport, Nova Scotia DEWATERING SCREEN REJECTS, PRE THICKENED WITH A SIDEHILL This mill has a CP 12 to dewater OCC waste sludge and tertiary/quaternary rejects prior to hauling them to landfill. Press cake is in the range of 50% solids, and

PRESSURE SCREEN DESIGN  Meston's Sharing Knowledge

PRESSURE SCREEN DESIGN Meston's Sharing Knowledge

Jul 22, 2008PRESSURE SCREEN DESIGN. With the value Q = 0 debris is split between the accept and reject flows according to their mass flow, while the theoretical value Q = 1 denotes perfect debris removal to the reject at any mass reject rate, so that the accept will not contain any debris at all.

Causal Inference in Epidemiology   University of Pittsburgh

Causal Inference in Epidemiology University of Pittsburgh

Sussers Criteria (II) Rejection of a hypothesis can accomplished with confidence by only three criteria time order, consistency, factual incompatibility or incoherence. Acceptance or affirmation can be achieved by only four, namely strength, consistency, predictive performance, and statistical coherence in the form of regular exposure

IntegraCombisorter  Voith

IntegraCombisorter Voith

IntegraCombisorter is a continuously operated, highly efficient reject screen for separating plastics and light rejects. It provides high yield with minimum fiber loss. Thanks to the very high consistency in the reject discharge, no other thickening machine is required.

US Patent for Apparatus for screening waste paper pulp

US Patent for Apparatus for screening waste paper pulp

The accept stock from the tertiary screen is returned to the secondary screen e. The reject from the tertiary screen f is processed by a quaternary screen g. The stock accepted at the quaternary screen is returned to the tertiary screen f and only the reject from the quaternary screen g

Chapter 5 Social Psychology Flashcards  Quizlet

Chapter 5 Social Psychology Flashcards Quizlet

Start studying Chapter 5 Social Psychology. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Search. Emily's reduced consistency between her attitude and her actions is influenced by. D) subjective norms. Now he wants to purchase a new wide screen TV, and when he goes to the store, he looks at the Sony

Hire for culture, train for skill Recruiters reject

Hire for culture, train for skill Recruiters reject

Hire for culture, train for skill Recruiters reject candidates based on their lack of cultural fit Cultural fit is becoming an increasingly important factor when businesses consider prospective candidates.

Recycling Process   GLV

Recycling Process GLV

Recycling Process. The GLV TamPulper OCC Module is designed to be simple in concept and process flow. The module combines the pulping to coarse screening into a more compact design than the standard OCC recycling systems used in the past 30 years.

Reject compactor   andritz

Reject compactor andritz

The Reject Compactor ReCo is available in three different models ReCo C for coarse pulping rejects with higher consistencies, typically 10 45% ReCo F for fine rejects with higher fiber content and consistencies down to 1.5%

High Performance Foil Rotor Improves De Ink Pulp Screening

High Performance Foil Rotor Improves De Ink Pulp Screening

the trial, the screens were run at the mill's normal operating conditions a reject rate of 22.5% (by mass), feed consistency between 1.1 and 1.3%, and slot velocity of 1.3 m/s.

A Systems Approach to Pressure Screen Control in the Pulp Mill

A Systems Approach to Pressure Screen Control in the Pulp Mill

there is an optimum feed consistency, and it changes as chip furnish and refiner plate conditions change. Finally, a large variability in feed consistency can upset the screen reject rate and cause a significant disturbance to efficiency as well as pulp quality and freeness. To adequately control feed consistency, trim dilution is

ModuScreen coarse screening   ANDRITZ GROUP

ModuScreen coarse screening ANDRITZ GROUP

ModuScreen F a multi use screen. The ModuScreen F is a multi use screen which can serve as a coarse screen or as a high and low consistency fine screen. The ModuScreen F is delivered with a rotor and screen cylinder that is optimized for production requirements, ensuring reliable performance and superior screening efficiency.

In TAPPI proceedings, 1987 pulping conference; 1987

In TAPPI proceedings, 1987 pulping conference; 1987

from tailings (quaternary screen rejects) to about that of pulp fed forward to the papermill system. At first pass optimum operating condi tions (Table 1), a single pass removed 53.6% of the total contaminants which included removal of 85.8% of the stickies. Optimum operating conditions were those which gave the maximum net

Reject Analysis in a Digital Radiography (DR) Quality

Reject Analysis in a Digital Radiography (DR) Quality

Film/Screen Reject Rates Reject film collected in containers and manually sorted for rejection reason. Rejects included waste film (defective/fogged film etc.) which was important to evaluate due to high cost of film. Film/screen reject rate ~ 10%, ~45% of rejects due to

Method and apparatus for screening waste paper pulp

Method and apparatus for screening waste paper pulp

Jan 28, 1997The high quality stock is sent to a next stage as accepted stock. The rejected stock is sent to a defibering section and is diluted after defibration, part of the rejected stock; being circulated to the screening sections, the remainder being discharged out of the system through a rejection outlet.

12 Tips on How to Screen Job Applicants   dummies

12 Tips on How to Screen Job Applicants dummies

Save time; conduct phone interviews. A ten minute conversation may help you screen out an applicant who isnt really qualified, is vague about their actual experience, or is unable to communicate clearly. Schedule in person interviews with the best applicants from the phone interviews and use your interview scale for each applicant.

REJECT SCREEN (LOW CONSISTENCY SECONDARY SCREEN)

REJECT SCREEN (LOW CONSISTENCY SECONDARY SCREEN)

Reject Screen is a vertical pressure screen with periodic reject discharge as secondary screen in stock preparation as well as approved flow section. It can also be used as tertiary reject handling screen for fiber recovery. Operating Principle The Reject Screen works in cycles with fully automatic operation. The processed stock is

PRESSURE SCREEN DESIGN  Meston's Sharing Knowledge

PRESSURE SCREEN DESIGN Meston's Sharing Knowledge

Jul 22, 2008c R is the consistency of the reject pulp (%), c F is the consistency of the feed pulp (%). The volumetric and mass reject rates together determine the reject thickening factor, RTF, which characterises the operation point of screening. There is a case specific upper limit for reject thickening, after which the screen will be plugged (Wakelin Corson 1995). Equation 3. Screening efficiency

TAPPI   Pressing Knots  Shives  Vincent Corp

TAPPI Pressing Knots Shives Vincent Corp

The screen tailings are funnelled directly into the 12 presses. At Fort James, in contrast, the flow of quaternary rejects and knots from the knotters flow directly to a 16 press without benefit of a sidehill screen. Surge flows of up to 400 gpm go to the press. Both mills use a hot stock screening system.

screening technology Putting the Pressure on Tail Screening

screening technology Putting the Pressure on Tail Screening

Hardwood and softwood pulps were sampled and the Kappa number in the blowline varied between 17 and 36. At start up, the reject flow rate was set at 15 m3/h. Upper and lower dilution was 30 and 15 m3/h respectively according to the control algorithm based on mass flow of pulp within the screen.

Feed consistency and rotor effects on pulp screening

Feed consistency and rotor effects on pulp screening

Mechanisms are proposed to explain reject thickening behaviour of wood pulp fibre suspensions in a fractionating screen with 1, 1.6 and 2.4mm smooth holes under conditions of increasing feed

REJECT SCREEN (LOW CONSISTENCY SECONDARY SCREEN)

REJECT SCREEN (LOW CONSISTENCY SECONDARY SCREEN)

Reject Screen is a vertical pressure screen with periodic reject discharge as secondary screen in stock preparation as well as approved flow section. It can also be used as tertiary reject handling screen for fiber recovery. Operating Principle The Reject Screen works in cycles with fully automatic operation. The processed stock is

Pulp consistency and rotor back flushing effects on

Pulp consistency and rotor back flushing effects on

Request PDF on ResearchGate Pulp consistency and rotor back flushing effects on pressure screen reject thickening Difference in rotor back flushing characteristics is proposed to explain

Recycled Papermaking and the Impact of Changes in the

Recycled Papermaking and the Impact of Changes in the

Consistency is Lowered as Stock Progresses Through the Cleaning Process to Maximize the Cleaning System Efficiency. The Lower the Consistency, the Higher the Pumping Energy Requirements for a Given Tonnage. Recover as Much Usable Fiber as Possible Cascade Reject Cleaning Streams from Primary to Secondary, to Tertiary and Quaternary Levels.

Recycling Process   GLV

Recycling Process GLV

Recycling Process. Large plastics and lightweight contaminants not collected on the ragger rope of the Primary Pulper are continuously removed by the Washing Reject Drum. Smaller plastics and floatable contaminants that pass through the drum are removed by the

IntegraScreen  Voith

IntegraScreen Voith

Together with the additional reject dilution, simplified by the up flow principle, the thickening of the reject will be reduced. Thus, clogging caused by to high thickening will be avoided. Furthermore, the lower reject consistency leads to a reduction of losses.

Screening and cleaning   Valmet

Screening and cleaning Valmet

Screening and cleaning. High pulp consistency minimizes white water usage and provides a low passing velocity through the slots, which optimizes screening efficiency. Shives and sand that do not pass the narrow slots, the rejects, are sent to the unrefined rejects chest for further treatment in the reject refiner.

TPM Configuration and Troubleshooting  BitLocker Drive

TPM Configuration and Troubleshooting BitLocker Drive

TPM Configuration and Troubleshooting. The Trusted Platform Module (TPM) is a piece of hardware that provides secure storage of critical data, usually encryption keys, signatures, and the like. There are four basic scenarios that we are likely to encounter No TPM at all; TPM turned off, which was long the default for Dell laptops