Focus on heavy equipment
Focus on heavy equipment
The main component of bentonite is montmorillonite, and the content of montmorillonite is usually 85%~90%. The structure of montmorillonite is a 2:1 crystal structure consisting of two silicon-oxygen tetrahedrons sandwiching a layer of aluminum-oxygen octahedrons. Bentonite also contains some other mineral components, such as illite, kaolinite, halloysite, chlorite, zeolite, quartz, feldspar, calcite, etc. In addition, the main chemical components of bentonite include silicon dioxide, aluminum oxide and water.
Bentonite processing usually involves the following steps:
Raw material preparation: First, the bentonite is preliminarily screened to remove impurities and ensure the quality of the raw materials.
Mixing evenly: Then, the bentonite is mixed with water to make it into a paste. This step is to make the water distribution of the bentonite more even, which is convenient for subsequent dehydration treatment.
Screening and dehydration: The paste is further dehydrated through a screening machine to remove excess water. This step helps reduce the moisture content in the bentonite and prepares it for drying.
Drying: Finally, the dehydrated bentonite is dried in a bentonite dryer. The drying temperature should be determined based on the moisture content, particle size and specifications of the bentonite, generally between 80℃-120℃. During the drying process, the temperature must be constantly checked to ensure the best drying effect. The moisture content of the bentonite after drying will be greatly reduced, making it easier to store and transport.
In addition, drying will also have an impact on the properties of bentonite. Drying will make the particles of bentonite come into closer contact, resulting in a significant increase in its wet compressive strength. However, drying will also reduce the specific surface area of bentonite and change its adsorption properties. It will also limit the flow of water and gas in it, affecting permeability, water permeability, breathability and other properties.
Zhengzhou Jiutian provides a full set of bentonite processing equipment. If you are interested, please feel free to consult us.
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