Attapulgite Clay vs. Bentonite
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Choosing the right components and additives for drilling fluids and clay slurries is essential during construction groundworks and oil and gas well drilling.
A water-based drilling fluid, containing clay, is used to aid the drilling of deep wells for oil and gas. The fluid or mud slurry cools and lubricates the drill bit; provides hydrostatic pressure preventing formation water from entering the well; suspends drill cuttings; and reduces fluid loss.
Commonly known as &#;Salt gel&#; and unlike traditionally used bentonite clay, attapulgite clay is inert towards salinity but is still able to gel. This makes Min-u-Gel® from Active Minerals the superior choice when the drilling area contains brackish water.
Clay slurries are required in the groundworks of large infrastructure developments as a thixotropic, support and lubricating agent. The slurries stabilise the excavation by exerting hydrostatic pressure and forming a filter cake on the walls. This prevents the walls from collapsing. The slurry hardens producing a low permeability barrier. The slurry cut-off wall prevents the flow of groundwater and leachates.
Min-u-Gel® from Active Minerals is the best choice for construction taking place in areas of high ionic concentration waters.
The company is the world’s best Attapulgite for Oil Drilling supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.
Get in contact with our trained team for further information.
BackIncreased maize yield using slow-release attapulgite-coated fertilizers
The clay attapulgite, also known as palygorskite, is a natural nonmetal clay mineral (Fig. 1). It has a fibrous reticular structure with many nanoscale channels giving it unique physical and chemical properties, such as a large specific surface area, adsorption, suspension, slow releasing, disper- sion, ion-exchanging, water adsorption and retention, and low specific gravity (2.0 &#; 2.3 g cm &#; 3 ). Attapulgite is sticky and plastic when wet and when drying shows little shrinkage (Murray ; Ye et al. ). Attapulgite contains a small amount of elements including Si, Al, Mg, Fe, K, Ca, and Mn and so is expected to be a source of many microelements (Xie et al. ). Studies have shown that attapulgite combined with compound fertilizer increases crop yields (Yang et al. ). Attapulgite has rich reserves, low price, and is environmentally friendly and so is believed to be the most feasible coating material for slow-release compound fertilizers. The use of coated, compound fertilizers in accordance with the nutrient demands of crop plants at different growth stages can ensure the crop has sufficient amounts of nutrients throughout its whole growth stage. This would greatly improve crop yield, reduce the waste of fertilizers, and lower production costs. Maize ( Zea mays L.) is a crop requiring a large amount of fertilizer to meet the needs of plant growth. In the present study, we prepared attapulgite-coated fertilizers (ACF) by dividing chemical fertilizers into three applications according to the nutrient demands of maize plants in different growth stages, with each part of the fertilizer coated with a layer of attapulgite. Our objective was to determine (1) whether the ACF had a slow-release effect and (2) its impact on crop yield and fertilizer use efficiency in maize. We hypothesized that ACF would significantly improve maize production because their slow release would meet the nutrient demand of maize during the whole growing ...
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Fertilizers are the major input in production of grain crops, but in many cases, the amounts of fertilizers applied to crops exceed the requirements of crop growth. Excessive use of N fertilizers leads to losses through leaching, volatilization, and denitrification. The majority of soils in China &#; s semiarid rain- fed agricultural areas are alkaline and calcareous (Zhang et al. ). When N fertilizers are applied to calcareous soils, there is inevitable ammonia volatilization, with N 2 O produced in the nitrification &#; denitrification processes contributing to global climate change. However, in irrigated areas, N fertilizers, when converted into nitrate or ammonium, often move below the root zone and cannot be absorbed by crop roots (Miao et al. ).
If you are looking for more details, kindly visit Attapulgite as Absorbent.