asphalt green liquor dregs

Improving Till by Adding Green Liquor Dregs in Sealing ...

1 Improving Till by Adding Green Liquor Dregs in Sealing Layers to Control AMD – A Pilot Study Maria Mäkitalo 1, Josef Mácsik 2, Christian Maurice 1,3 and Björn Öhlander 1 1. Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, Sweden

ABTCPTAPPI 2000 - Celso Foelkel

ABTCPTAPPI 2000 Congresso lntcrnaionalde ... C7ctcylacr 23rcí l0 26th 2000 Sao Paerlu Brazil A Review of Issues Related to Green Liquor Quality and Approaches towards Improved Clarification Ananta Shrinath ... The underflow from the green liquor clarifier usually has a concentration of 10lo solids dregs The large amount of liquor carried in ...

Valmet White Liquor Plant Technology - WCBLRBAC.org

– Poor separation of dregs particles from weak liquor Incoming dregs – Consistency 1-10% of solids – Liquor part may be anything from green liquor to almost water Filtration – Separation by means of a filter cloth – Driven by differential pressure – Dregs particles …

Cesco Solutions » Clarification Principles

Clarification Principles. Clarification: The green liquor clarifier, white liquor clarifier and the mud washer are liquid / solids separation devices that work by the same principal of sedimentation. Sedimentation is the removal of suspended solids from a liquid by gravity settling. ... High levels of dregs carry over from the green liquor ...

Green Liquor Clarifiers - YouTube

May 01, 2014· Visit https://goo.gl/1S7Bj1 to view the full video and purchase access to our other Pulping courses. Green liquor contains undissolved particulate material called "dregs." In order to be reused in ...

Total and extractable non-process elements in green liquor ...

Cooking Liquor Pulp to Board Mill Weak Black Liquor Strong Black Liquor Green Liquor Green Liquor Dregs Cooking Liquor Na2SO3 Steam Fig. 1. Schematic diagram of the semi-chemical pulping process, the chemical recovery circuit and the green liquor dregs outlet at …

Non-process element mass balance improves recaust and …

Non-process element mass balance improves recaust and lime kiln efficiency at Elk Falls mill By B. McGuffie and K.Taylor 34 • 108:3 (2007) • PULP & PAPER CANADA T49 lime kilns three samples were collected over an eight hour period on August 25, 2005 and combined into one composite sample. Raw green liquor was a

Asphalt Green

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Use of slaker grits and green liquor dregs in asphalt ...

Apr 18, 1995· This invention relates to the use of green liquor dregs and slaker grits as part of the aggregate in asphalt concrete pavement. Green liquor dregs and slaker grits are waste products from the pulp and paper process. Approximately 6,000 to 8,000 cubic yards of the waste material are produced annually and presently discarded in onsite landfills.

Moisture damage resistance of hot-mix asphalt made with ...

feasibility of using green liquor dregs and biomass fly ash from the paper industry as filler in hot-mix asphalt (HMA) for road pavement construction is analysed. Particularly, the moisture damage resistance (i.e., water sensitivity) of an AC 22 base B50/70 G has been studied using the

Comparison of Alternatives for Green Liquor Handling Anita ...

Purpose of Green liquor handling To produce green liquor with a low dregs content Dregs Composition Typical dregs content in raw green liquor is 700-1500 mg/l Dregs are composed of: Unburnt carbon from the recovery boiler Trace elements (NPE) from wood chips and purchased lime, magnesium added to O2-delignification and/or bleach plant P-stage

Cyclone processing of green liquor dregs (GLD) with ...

Nov 15, 2016· Green liquor dregs were provided by a chemical pulp mill located in Sweden. Received 1 m 3 containers were sampled, the samples combined and divided to provide a representative sample for feed characterization. The determined dry solids content of the dregs was approx. 34% (1.9 kg H 2 O kg −1 d.b.). The experiments were performed with a pilot dryer illustrated in Fig. 1.

Green liquor dregs for the ... - papers.acg.uwa.edu.au

Abstract: Green liquor dregs (GLD) from the sulphate pulping process is one of the main wastes from the pulp industry still being landfilled in Sweden. GLD has similar hydro-geotechnical properties as tailings paste and may be used as an amendment to tailings to reduce the leachate generation, improve the leachate quality, and improve the geotechnical properties of the mixture.

Kraft process - Wikipedia

The kraft process (also known as kraft pulping or sulfate process) is a process for conversion of wood into wood pulp, which consists of almost pure cellulose fibers, the main component of paper.The kraft process entails treatment of wood chips with a hot mixture of water, sodium hydroxide (NaOH), and sodium sulfide (Na 2 S), known as white liquor, that breaks the bonds that link lignin ...

Circular Cases - paperChain

Circular Case Construction sector. Valorisation of Paper industry’s causticizing residuals (i.e. lime mud, slaker grits and green liquor dregs) as secondary raw materials for concrete and asphalt …

The moist green liquor dregs are a recycling challenge ...

UPM aims to reach a Zero Solid Waste to Landfill operational status by 2030. This means giving up on landfill waste, at first in Finland and then globally. One of the most challenging production side streams to recycle is green liquor dregs: the moist "black ashes" created in the soda recovery boiler while burning dissolved wood material.

Green Liquor - environmentalchemistry.com

Editor's note: Some chemicals in this database contain more information than others due to the original reason this information was collected and how the compilation was accomplished. While working with material safety data sheets (MSDS), I found that manufacturers sometimes used obscure names for constituent chemicals and I didn't always have a good idea of what I was dealing with.

Dregs Washing Training Video - Convergence Training

Green liquor is created when smelt from the recovery boiler is mixed with weak wash in the dissolving tank. Any un-dissolved particulate material in the green liquor is termed "dregs". The failure to remove these foreign materials from the green liquor can lead to …

Green liquor handling - Valmet

Valmet offers products that separate dregs from green liquor and increase the efficiency of the recausticizing process. The dregs handling encompasses systems that wash and dewater dregs efficiently with minimal or no mud consumption. Valmet has several green-liquor handling equipment alternatives, which all meet the primary aim, to reduce the dregs content.

Moisture damage resistance of hot-mix asphalt made with ...

using green liquor dregs and biomass fl y ash from the paper industry as fi ller in hot-mix asphalt (HMA) for road pavement construction is analysed. Particularly, the moisture damage resistance ...

Circular Case 1 - paperChain

Two demonstrations will be carried out to prove the circular model value and application potential. The first demonstration will focus on the following waste streams: green liquor dregs and slaker grits. These waste streams will be valorised as secondary raw materials for …

Green liquor dregs dewatering - Alfa Laval

The smelt from the recovery boiler is mixed with weak process water to form green liquor and passes a settling tank where impurities settle to the bottom. The dregs from the settling tank are dewatered to recover as much of the green liquor as possible and to minimize disposal costs.

Comparison of Alternatives for Green Liquor Handling …

Purpose of Green liquor handling To produce green liquor with a low dregs content Dregs Composition Typical dregs content in raw green liquor is 700-1500 mg/l Dregs are composed of: Unburnt carbon from the recovery boiler Trace elements (NPE) from wood chips and purchased lime, magnesium added to O2-delignification and/or bleach plant P-stage

Green liquor - Wikipedia

Green liquor is the dissolved smelt of sodium carbonate, sodium sulfide and other compounds from the recovery boiler in the kraft process.The liquor's eponymous green colour arises from the presence of colloidal iron sulfide. The green liquor is usually reacted with lime (CaO) in the causticizing stage to regenerate white liquor.Alternatively, green liquor can be used prior to white liquor to ...

Green liquor dregs dewatering - alfalaval.com

Green liquor dregs dewatering Cut installation and operating costs with Alfa Laval decanter centrifuges Using Alfa Laval decanter centrifuges for dewatering green liquor dregs in pulp mills offers many benefits compared to using traditional rotary vacuum filters. A …

Green Liquor Clarifiers - Convergence Training Video

Dregs are typically removed from green liquor by allowing them to settle out in green liquor clarifier. What is the effect of polymer added to a green liquor clarifier? Polymer added to green liquor causes small dregs particles to combine together into larger particles, leading to faster and better separation of dregs.

Causticizing System - EKCP

green liquor clarifier EIMCO-K.C.P. Green Liquor clarifier is designed to give better effluent clarification than the older multiple tray design at a lower installed cost. This unit can also be furnished with provisions for clarified Green Liquor Storage in same unit, thereby eliminating the extra tankage for green liquor storage capacity.

Moisture damage resistance of hot-mix asphalt made with ...

Jan 20, 2016· Certain paper industry wastes display high recycling potential. In this investigation, the feasibility of using green liquor dregs and biomass fly ash from the paper industry as filler in hot-mix asphalt (HMA) for road pavement construction is analysed.

Green Liquor Dregs as Sealing Layer - Luleå University of ...

Green Liquor Dregs as Sealing Layer Material to Cover Sulphidic Mine Waste Deposits Maria Mäkitalo Luleå University of Technology Department of Civil, Environmental and Natural Resources Engineering

Beneficial use of by-product solids from the kraft ...

Download Citation on ResearchGate | Beneficial use of by-product solids from the kraft recovery cycle | Causticizing residues - slaker grits, green liquor dregs, and excess lime mud - are among ...

LimeGreen green liquor filters - ANDRITZ

ANDRITZ PULP & PAPER offers innovative technologies for efficient filtration of green liquor and the handling of dregs in white liquor plant applications. These systems can be installed as standalone units in modernization or upgrade situations, and offer truly superior performance when integrated into a modern ANDRITZ LimeLine white liquor plant.

Green liquor dregs handling - valmet.com

We offer a decanter centrifuge in our dregs dewatering applications for precoat-free lime mud dewatering. A robust high-G machine for reliable operation, minimum maintenance and best dregs dryness. Vacuum drum filter. Washes and dewaters green liquor dregs with high efficiency. Simple operation, high availability and minimum maintenance.