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Bentonite

BentoniteWith good capacity of suspension and thixotropy, It also has a lots of other advantages, such as low filtrate volume, good capacity of mud made, easy dispose and etc. At the moment, many Non dig companies have applied this kind of bentonite in ma
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Description

BentoniteWith good capacity of suspension and thixotropy, It also has a lots of other advantages, such as low filtrate volume, good capacity of mud made, easy dispose and etc. At the moment, many Non dig companies have applied this kind of bentonite in many directional through-passing construction such as West-East natural gas transmission project, which has approved the bentonite for directional through-passing is the basic ideal material for all kinds of projects.

Physical indexTechnology index

items\Typefirst gradesecond gradethird gradefourth grade
Green Comp Strength , kpa>100705030
Dry Comp. Strength, kpa >2.52.01.50.5
MBI,g/100g32282522
Mesh(through B.S.S.200 sieve,%,>85858585
Moisture %9~139~139~139~13

Chemical content

IngredientsunitSodium BentoniteCa-bentonite
sio2%69.3267.23
AL2O3%14.2715.88
Cao%1.992.22
Mgo%2.694.01
K2o%1.380.19
Na2o%1.850.13
Fe2o3%1.842.62
Feo%0.630.03
Mno%0.100.00
Ti02%0.130.13
P2o3%0.040.06
LOI%5.678.09


usage

Bentonite has special properties, such as swelling power, cohesiveness ,catalysis, thixotropy, suspension property and cation exchange property and so on, so it is widely used in various industrial fields. according to the uses, bentonite is divided into bentonite for mechanical casting use, bentonite for metallurgy pellet, bentonite for drilling mud, bentonite for agricultural building materials, bentonite for civil engineering.

Bentonite for oil drilling :

projectDrilling BentoniteUntreated bentoniteOCMA Bentonite
Viscometer readings 600r/min>3030
Yield Value / plastic viscosity<31.56
Filtration volume / cm 3<15.016.0
75渭m sieve, mass fraction /% <4.02.5
Dispersed plastic viscosity / (mPa 鈥� S)>10
After filtration the amount of scattered / cm 3 <12.5
Water (105 掳 C). Mass fraction /% <13.0

Bentonite for foundry

projectSuper GradeSecond gradeThird gradeFourth grade
Wet compressive strength /kPa>100705030
Hot wet tensile strength /kPa>2.52.01.50.5
Blue absorption capacit y/(g/100g) >32282522
Sieving ratio (75渭m, dry sieving), mass fraction /%>85
Water (105 掳 C). Mass fraction /%9-13
Note: The casting of Ca-bentonite pull-degree heat and moisture not do requests

Bentonite for metallurgy

projectSodium BentoniteCa-bentonite
SuperGradeSecond gradeThird gradeFirst GradeSecond gradeThird grade
Water absorption (2h) /% >400300200200160120
Blue absorption capacity/(g/100g) >302622302622
Swelling Index/(mL/2g)>155
Sieving ratio (75渭m, dry sieving), mass fraction /%>989595989595
Water (105 掳 C). Mass fraction /%9-139-13

Bentonite of JJP grade

IndicatorsMoisture absorption rate%Moisture%Size mm / tabletsDry grain compressive strength ofkg / particleCapacity g/Cm3Color
Model>100<101-4>31.0卤0.1White, red, green