Drying bentonite clay using Jiutian rotary dryer

Bentonite clay has good moisture absorption and viscosity, and is commonly used as an adhesive, sealant, adsorbent, and lubricant. Due to the fact that newly mined bentonite clay usually contains 25-35% moisture, high moisture can cause bentonite clay to easily expand and clump, making it difficult to transport and process later. Therefore, bentonite clay must undergo a drying step before use to reduce its moisture content to 5-10%, which is usually achieved through the use of a rotary dryer.

About Jiutian bentonite clay rotary dryer

The main body of the Jiutian bentonite clay rotary dryer is a drum slightly inclined to the ground, which adopts a forward/reverse heating method. High temperature hot air and wet materials enter at the same time. There is a lifting device inside the drum, which throws the materials up through a lifting plate to form a "material curtain", increasing the heating area, evaporating quickly, and producing high-quality products. A cleaning device has been designed to prevent the agglomeration and wall sticking of bentonite clay due to its easy bonding characteristics. Due to the hygroscopicity of bentonite clay, if the drying temperature exceeds 500 ° C, the crystal water in bentonite clay will be irreversibly removed and the molecular structure will be destroyed. Therefore, its drying process must be carried out under strictly controlled temperature. When designing the bentonite clay rotary dryer, Jiutian fully considered the characteristics of bentonite clay to ensure that its performance was not compromised.

Applications of bentonite clay

1. Casting: Due to its good water absorption and expansion properties, bentonite clay is often used as the core bonding material for casting sand. Bentonite clay is required to have a stable expansion value, suitable moisture content, and good dispersibility to ensure uniform sand strength, good air permeability, and reduce casting defects.

2. Drilling mud: Bentonite clay rapidly hydrates and expands upon contact with water. Bentonite clay is widely used in the fields of petroleum, natural gas, and water well drilling as the basic material for drilling mud. Bentonite clay is required to be supplied in the form of low moisture content powder, with good hydration rate, slurry making rate, and viscosity performance to meet the needs of rapid slurry preparation and long-term stable circulation on site.

3. Cat litter: The demand for bentonite clay cat litter has surged, and bentonite, as a cat litter, has a strong ability to adsorb liquids and odors. Require the dried bentonite clay to have extremely low moisture content and specific particle morphology.

4. Environmental Protection: Bentonite clay has strong water absorption, expansion, and adsorption capabilities. It is mainly used for anti-seepage, adsorption, and pollution control in landfill anti-seepage layers, underground anti-seepage projects, and wastewater treatment processes. Bentonite clay is required to have good expansibility, low permeability coefficient, and stable particle structure to ensure the long-term sealing of the anti-seepage layer and the safe operation of environmental engineering.

The rotary dryer is the most commonly used form of drying bentonite clay, which achieves efficient, stable, and continuous drying of high moisture bentonite clay through strong flipping, uniform heat transfer, and anti sticking design. If you are interested in the drying process of bentonite clay, please feel free to contact us at any time.