screw extrusion sodium bentonite

screw extrusion sodium bentonite - drome-reporter.fr

screw extrusion sodium bentonite Manufacture and Characterisation of Silicalite Monoliths overall diameter of 40 mm have been prepared from silicalite powder and sodium bentonite (as a binder) by the unit operations of paste preparation, extrusion, drying and firing.

Numerical Study of Sodium Bentonite Extrusion into a ...

2021-1-20 · As a candidate buffer/backfill material for high-level radioactive waste geological repositories, bentonite has numerous favorable properties, such as low permeability, high expansibility, and a high sorption capacity for radionuclides. The radionuclide-isolating performance of a buffer is strongly influenced by its extrusion. In this study, the bentonite extrusion process is explored: its ...

Numerical Study of Sodium Bentonite Extrusion into a ...

Download Citation | Numerical Study of Sodium Bentonite Extrusion into a Planar Fracture | As a candidate buffer/backfill material for high-level radioactive waste geological repositories ...

Numerical Study of Sodium Bentonite Extrusion into a ...

2021-3-31 · A 2D extrusion model of bentonite that is based on the 1D free swelling model of bentonite is presented. A numerical method is proposed to investigate the extrusion process of Na-bentonite into fractures over time under no-seepage conditions based on the free swelling model.

Numerical Study of Sodium Bentonite Extrusion into a ...

2021-4-28 · J Shanghai Jiaotong Univ Sci ›› 2021, Vol. 26 ›› Issue (2): 146-154. doi: 10.1007/s12204-021-2268-6 • Energy Engineering, Mechanics & Materials • Previous Articles Next Articles Numerical Study of Sodium Bentonite Extrusion into a Planar

Numerical Study of Sodium Bentonite Extrusion into a ...

2021-6-30 · Numerical Study of Sodium Bentonite Extrusion into a Planar Fracture LIU Miaomiao (刘苗苗), LI Xiaoyue (李晓月), XU Yongfu (徐永福) (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 出版日期:2021-04-28 ...

(PDF) Temperature Effects on the Swelling and Bentonite

2017-3-30 · Temperature Effects on the Swelling and Bentonite Extrusion Characteristics of GCLs doi 10.1061/9780784480472.022. Full Text Open PDF ... Modelling the Effects of Operating Conditions on Die Melt Temperature Homogeneity in Single Screw Extrusion. 2010 English. ... Effects of Fish Meal and Sodium Bentonite on Daily Gain, Wool Growth, Carcass ...

US4462470A - Extrusion of bentonite clay for fluid loss ...

SUMMARY OF THE INVENTION. In accordance with the present invention, the viscosity and fluid loss characteristics of a water expandable bentonite clay are substantially improved by extruding the...

Extrusion Moulding of Bentonite and the Improvements of ...

Extrusion Moulding of Bentonite and the Improvements of Its Mechanical Strength GAO Wen-yi1, ZHENG Zhen-chao2, REN Li-guo1, MA Li-li1 1.School of Chemistry and Materials Science,Liaoning University of Petrochemical & Chemical Technology, Fushun ...

Study on Sodium Modification of Inferior Ca-Based ...

2011-9-14 · Three methods are usually used to sodium modification [ 7, 8 ]: suspension method, semidry process, and screw extrusion method. Comparatively, suspension method makes the sodium reaction happen in solution, and the time for this method is the shortest.

Numerical Study of Sodium Bentonite Extrusion into a ...

Download Citation | Numerical Study of Sodium Bentonite Extrusion into a Planar Fracture | As a candidate buffer/backfill material for high-level radioactive waste geological repositories ...

(PDF) The Processing and Characterization of

The Processing and Characterization of MWCNT/Epoxy and CB/Epoxy Nanocomposites Using Twin Screw Extrusion. ... 30B [20], and organomodified sodium Indian bentonite [21] were used in these studies ...

The influence of bentonite extrusion on shear strength of ...

2008-2-1 · Extrusion of bentonite was considered to have occurred when bentonite was wet and mobile (Hewitt et al., 1997; Koerner, 1998a, 1998b) to the extent equal to that of hydrated bentonite; thus, its extrusion was more extensive when bentonite was prehydrated at a lower normal stress than that applied in direct shear test (Gilbert et al., 1997).

Clay Minerals and Clay Mineral Water Dispersions ...

2016-3-9 · Extrusion processes, such as twin screw (TS) and single screw, adapted with a special static mixer die with ultrasound application (SS-MDU) were considered. It was found that process conditions influence clay mineral dispersion which has a remarkable impact on the flame-retardant and mechanical properties . Sodium bentonite

Extrusion Moulding of Bentonite and the Improvements of ...

Extrusion Moulding of Bentonite and the Improvements of Its Mechanical Strength GAO Wen-yi1, ZHENG Zhen-chao2, REN Li-guo1, MA Li-li1 1.School of Chemistry and Materials Science,Liaoning University of Petrochemical & Chemical Technology, Fushun ...

US 4462470 A - Extrusion Of Bentonite Clay For Fluid Loss ...

The Lens serves almost all the patents and scholarly work in the world as a free, open and secure digital public good, with user privacy a paramount focus.

Thermoplastic Protein Nano-Composites Using Bloodmeal

2013-7-12 · A reduced screw speed and feed rate of about 60 g/min and 300 rpm led to a high SME of about 2,100 to 2,600 kJ/kg. Feed rate and screw speed also affect residence time (R T). High feed rate and screw speed lead to a low residence time, therefore, when SME is high, the corresponding residence time, achieved by re-extrusion, was also high.

Numerical modeling of bentonite extrusion and

Abstract A case study of limited scope is presented in order to assess the potential of the performance of the engineered barrier in terms of the effects of bentonite extrusion on radionuclide transport in a water-saturated planar fracture. Under saturated conditions, bulk bentonite in the engineered barrier system will swell when contacted by groundwater.

EVA waterproof membrane_SHANDONG TIANHAI NEW ...

"Tianhai" EVA (ethylene-vinyl acetate copolymer) waterproof board is produced by domestic advanced two-stage co-extrusion single-screw extrusion method. The raw material resin EVA is added with reinforcing agent, antioxidant, heated and melted, plasticized and extruded.

Extrusion - an overview | ScienceDirect Topics

2014-2-25 · Extrusion is the process of heating practically only TPs that may be in the shape of powders, beads, flakes, pellets, or combinations of these forms. This plastic enters the extruder's hopper. The extruder utilizes a plasticator [spiral screw that rotates within a heated barrel (cylinder)] to melt the plastic (Chapter 3).The melted plastic is then forced through a die to produce the desired ...

Extrusion and erosion of bentonite buffer material in a ...

Made available by U.S. Department of Energy Office of Scientific and Technical Information ...

extrusion de bentonite - delichef.nl

extrusion spun mineral fiber loss circulation material. This coarse, long, and flexible fiber will give increased circulation by bridging and plugging off voids, fractures, and all types of permeable formations. MEDIUM CHIPS are natural sodium bentonite chips screened 1/4" (0.64 cm) to 3/8" (0.95 cm) in size. This product is used to +Obtenir le ...

US Patent for Extrusion of bentonite clay for fluid loss ...

The extrusion/cutting apparatus 10 generally includes a hopper 12 for maintaining a level of moist (i.e. 20-40% by weight water) bentonite clay, an elongated extrusion barrel 14 having a rotatable auger 16 disposed therein, and a die or extrusion plate 18 disposed at one extreme end of the extrusion barrel 14, including one or more die openings ...

Numerical modeling of bentonite extrusion and

Abstract A case study of limited scope is presented in order to assess the potential of the performance of the engineered barrier in terms of the effects of bentonite extrusion on radionuclide transport in a water-saturated planar fracture. Under saturated conditions, bulk bentonite in the engineered barrier system will swell when contacted by groundwater.

Manufacture and Characterisation of Silicalite Monoliths

2021-7-8 · overall diameter of 40 mm have been prepared from silicalite powder and sodium bentonite (as a binder) by the unit operations of paste preparation, extrusion, dry-ing and firing. The manufactured monoliths, which show good strength, retain the crystal structure and micropore size of the source silicalite powder, and adsorp-

Bentonite nodules - Benterra Corporation

Bentonite is a naturally-occurring clay containing the clay mineral smectite. It typically also contains accessory minerals such as quartz, mica, feldspar and calcite. Sodium bentonite is a common form of the mineral and is the form used herein. Sodium bentonite is primarily mined in Wyoming.

上海交大研究生院主页平台管理系统 徐永福--中文主页--首页

Study of Sodium Bentonite Extrusion into a Planar Fracture, Journal of Shanghai 2021/04/01 [3] On the Recent Trends in Expansive Soil Stabilization Using Calcium-Based Stabilizer Materials (CSMs): A Comprehensive Review [4] Semi-analytical ...

Extrusion - an overview | ScienceDirect Topics

2014-2-25 · Extrusion is the process of heating practically only TPs that may be in the shape of powders, beads, flakes, pellets, or combinations of these forms. This plastic enters the extruder's hopper. The extruder utilizes a plasticator [spiral screw that rotates within a heated barrel (cylinder)] to melt the plastic (Chapter 3).The melted plastic is then forced through a die to produce the desired ...

Effects of screw configuration on chemical properties

The screw of twin-screw extruder can be divided into convey-ing section, shear melting section, and metering homogenization section from feeding end to extrusion end (Yang, 2013). Most of the reactions occur in the shear melting section and the melt transport section, so we focused on the screw configuration of these two parts.

Stabilization of sodium guaiazulene sulfonate in granules ...

Sodium guaiazulene sulfonate (GAS-Na), which has an anti-inflammatory effect, is an unstable compound, which is gradually decomposed in the solid state at room temperature. In fact, when heated (40 degrees C 6% RH), GAS-Na decomposes almost completely within 1 week. It was found that a kneaded mixtu

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