Nigeria is rich is solid mineral resources, such as: Kaolin, gypsum, mica, clay, tantalite, iron ore, gemstone, silica sand.
Read More
Recycling concrete &building rubble is not only able to bring profit to investors, but also good for environment protection.
Read More
By absorbing the advanced technology from the world, we researched and designed PF series impact crusher.…
Read More
Base on the plentiful experience of producing and marketing of impact crusher, Sofol R&D institution…
Read More
Adopting technology from the world, PY Series spring cone crusher has an excellent performance in secondary…
Read More
The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
Read More
Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
Read More
However, the Sprinkle Method is the best way to control water loss when it is not practical to drain the area to be treated. As with the Pure Blanket Method and the Mixed Blanket Method, first you need to determine the sq. ft. of the area you want to seal and the type of soil you will be working with. Then flag the area either with flagged ...
Details
This study aims to investigate workability and microstructural characteristics of sodium hexametaphosphate (SHMP)-treated calcium bentonite (Ca-bentonite) as a potential material for soil–bentonite slurry trench cutoff walls. First, a series of Marsh viscosity, filtrate loss, density, and pH experiments are performed on bentonite – tap water slurries …
Details
Bentonite suspensions are widely used for various civil and petroleum engineering applications such as temporary excavation fluids for slurry walls and drilling fluids for oil/gas exploration wells because of their low permeability and thixotropic nature [1–3].Moreover, recent studies show that concentrated bentonite suspensions can be …
Details
The AFS 2210-00-S methylene blue clay test (MBT) has been used as a part of foundry control programs to determine the active clay percent in green sand since 1967. 1 Active clay content is an approach to quantify the number of smectite clay minerals in a bentonite or molding sand. These minerals control bentonite properties and act as …
Details
Method of converting calcium bentonite to sodium bentonite that is suitable for use as drilling mud or a cement additive. After the addition of a calcium bentonite sample to a prepared soda ash solution at predetermined soda ash/bentonite weight ratios, the bentonite suspension is continuously heated and stirred for up to 24 h. The heating and …
Details
Sodium bentonite is most effective, when used as a mixed blanket, in the construction stage of a dam or when an existing dam has been completely drained, as only under these conditions can the necessary compaction be achieved. Mixed Blanket Method. Pump out existing water. Loosen the soil in the area to be sealed to a depth of 200-300mm.
Details
Iran Bentonite Co. is a pioneer active company which its activities are specialized in manufacturing and exporting of all grades of Bentonite. Having several Bentonite Mines in different areas of Iran, well-equipped Mineral Processing Plants and a knowledgeable and experienced technical team, Iran Bentonite Co., managed to pave its own way to ...
Details
Abstract. A new test, referred to as the solution retention capacity (SRC), is proposed as a potentially less tedious and quicker alternative to the swell index (SI) test (ASTM D 5890) for bentonite. The SRC represents the amount of a 50-mL solution retained in one gram of oven-dried bentonite after centrifugation at 2750 g, and the SRC values …
Details
The result of titration test indicate that the activated Na bentonite contains more CO32- anions based on the volume of HCl acid used in the titration which is 2-10 ml compared to natural Na bentonite which is 0.5-1 ml. Anion identification reaction shows that gas bubbles appear in activated Na bentonite while it did not in natural Na bentonite ...
Details
Method of converting calcium bentonite to sodium bentonite that is suitable for use as drilling mud or a cement additive. After the addition of a calcium bentonite sample to a prepared soda ash solution at predetermined soda ash/bentonite weight ratios, the bentonite suspension is continuously heated and stirred for up to 24 h. The heating and …
Details
The expansion ratio of bentonite is far less than that of sodium polyacrylate. In the present study, therefore, bentonite was considered as a support to limit PAA-Na swelling by sequestering the water. Because PAA-Na and bentonite both have significant water-adsorption capabilities, this study opted to combine the two to create a novel …
Details
GCLs consist of a thin layer of bentonite clay (5–10 mm) sandwiched between two geotextiles bonded by stitching or needlepunching. In some cases, a geomembrane is laminated to the GCL (Benson et al. 2007).The effectiveness of a GCL as a barrier to fluid flow is controlled by the hydraulic conductivity of the bentonite, which is composed …
Details
It should be kept in mind the following parameters. The addition of bentonite to a cement slurry requires additional mix water. A rule of thumb is for each 1 % of bentonite an additional 5.3 % of water is …
Details
bentonite component of geosynthetic clay liners (GCLs) based on ASTM D5890, Standard Test Method for Swell Index of Clay Mineral Component of Geosynthetic. Clay Liners. The Fast Alternative Swell ...
Details
In addition to these two obviously flawed solutions, a third method involves the use of salt-resistant polymer additives to obtain a sodium–calcium-based bentonite (the so-called salt-resistant bentonite, STB) which can be directly used to prepare a bentonite drilling fluid with salt water or even sea water .
Details
Natural sodium bentonite is characterised by very high swelling ability, high liquid limit ... Test methods are described in detail in Section 8. Tests to determine the properties of a bentonite slurry in accordance with the API Specification are carried out on a 6.4% suspension of bentonite in deionized water, aged ...
Details
Dry method gave high values of free. swell to activate bentonite in which the value of the evidence of free swell index rea ched 26 ml/10 grams at a. concentration of 3% of sodium carbonate, while ...
Details
Construction bentonite is a grade of sodium bentonite suitable for purposes related to civil engineering, such as waterproofing of foundations, construction of structures, and the tunneling industry. Manufacturers of bentonite enjoy various methods for producing and activating this substance.
Details
The activation effort was focused on the 7-meter local bentonite sample since it showed better properties in terms of viscosity build up and fluid loss control. A new cost-effective activation ...
Details
2.2.4 Permeability after Freezing-Thawing Cycles (Experiment 5) The experiments were carried to determine the permeability of bentonite mat after 1 to 6 freezing-thawing cycles under 50kN/m2 normal stress. There were 6 parallel tests on specimens with a diameter of 75 mm. The test method is described in ASTM D5084.
Details
This chapter discusses the commonly used tests to evaluate bentonite samples which include drilling fluid products, foundry products, iron ore pelletizing. American Petroleum Institute's Standard Procedure for Field Testing Water-Based Drilling Fluids covers items including: mud weight, viscosity and gel strength, filtration, sand, …
Details
bentonite powder may be about 2.28 (calculated from a rule of mixtures assuming that the grain specific gravity of dry sodium bentonite powder is 2.74 and that the moisture content of the powder as supplied is 13% by dry weight), so that: b Ì b c =1.78 (4) Now the smallest scale division on the mud balance, the
DetailsIn Fig. 12 the fluid losses per unit area for both the tests methods with varying bentonite contents are compared. Also, the rate of fluid losses in both the test methods are compared in Fig. 12. (a) 2% Bentonite. The total fluid loss per unit area using the API method was 1.69 cm after 420 min and the maximum fluid loss per unit area was 1.75 cm.
Details
The performance studies for removal of sodium from water using bentonite were not widely reported. Al-Essa (2018) used raw and HCl-treated bentonite for removal of sodium from an aqueous solution with an initial sodium concentration of 297.9 mg/L and a solid-to-liquid ratio of 1.0 g/10 mL. The sodium removal percentages of the raw and …
Details
M. Mahmoud, A. Mohamed, +2 authors. I. Hussein. Published in Energy & Fuels 13 October 2019. Environmental Science, Materials Science, Engineering. In this paper, a new method is introduced to produce sodium bentonite by treating calcium bentonite using seawater to eliminate the use of freshwater and reduces the amount of …
Details
the sodium bentonite is termed as bentonite, and the non- ... processing method. Bentonite is processed rst by drying . in the rotary kilns to moisture content 5-8%, and then gro-
Details
According to ASTM-D5891 (American Society for Testing and Materials, 2002b) and API-RP 13B-1 (American Petroleum Institute, 1990), the SD6A six-unit filter press apparatus was used to establish a method for determining the hydraulic conductivity of bentonite samples in different concentrations of salt solutions, which can be used to …
Details
Linear swelling test. The bentonite was dried at 105°C for 4 h and 10 g of bentonite was weighed and placed into test tube of the press. After maintaining the core at a pressure of 10 MPa for 5 min on a press, the core required for measuring the linear expansion rate was obtained, and the core height ΔL was recorded. Solutions containing ...
Details
We sell API-certified high-quality bentonite gel, HY High Yield 200 bbl sodium bentonite, and API Barite 4.10 + specific gravity in bulk or bags for the drilling mud industry. Go To Drilling Mud Gel. ... How to install Sodium Bentonite? The installation method depends on your pond condition and it needs. There are two methods where bentonite ...
Details
API 13A SECTION 6 BENTONITE POWDER STALLION ENERGY'S API Sec. 6 Bentonite is pure sodium based Bentonite, specially treated to meet API 13A Sec. 6 specification. It mixes to a minimum 95 bbls/ton yield ideal for piling and civil engineering application. It acts as a viscosifier and highly effective in fresh water.
Details
The result of these two effects is an increase of the permeability of primary calcium bentonites by about one order of magnitude compared to sodium bentonite. Download : Download full-size image; Fig. 3. Model conception of the micro structure and the permeability of clay. Left-hand side: dispersed clay, e.g. fine dispersed sodium …
Details
The raw clay contains large proportion of impurities and was beneficiated via dry and wet methods and sodium treatment. ... The additives were used to beneficiate the Nigerian bentonite, and the test result proved that at considerable concentrations of the additives, the Nigerian bentonite was able to compete with foreign bentonite and also met ...
DetailsTexture: Bentonite has a soft, fine texture and is easily crumbled. Density: The density of bentonite varies depending on the type and grade, but is generally between 2.0 and 2.7 g/cm³. Swelling: Bentonite can absorb several times its weight in water, causing it to swell and become gel-like. Chemical properties:
Details
Sofol is a well-known crusher and grinding mill manufacturer that offers equipment and solutions for customers from aggregates, mining and mineral grinding industry.
You can leave your message here, we'll send you an Email immediately.
Online ChatCopyright ©2000- 2024 Shanghai Sofol CompanySitemap
PE series jaw crusher is usually used as primary crusher in quarry production lines, mineral ore crushing plants and powder making plants.
GET QUOTE