Application and Processing of Bentonite in Palm Oil Industry

2021-06-21

Palm oil is a tropical woody plant oil which is the largest production, consumption and international trade oil industry in the world. Because Southeast Asian countries belongs to tropical rainforest climate or tropical monsoon climate, they are suitable for large-scale planting, and Malaysia and Indonesia are the main planting countries.

As palm oil is mainly used in catering industry and food processing industry, there are certain requirements for the purity of palm oil. In the palm oil bleaching and purification industry, most customers will use bentonite to grind powder and add some chemicals to absorb impurities and bleaching.

Bentonite is a non-metallic mineral with montmorillonite as its main mineral component. Because there are some cations in the layered structure formed by montmorillonite crystal cells, such as Cu, Mg, Na, K, and so on, and the interaction between these cations and montmorillonite crystal cells is very unstable and easy to be exchanged by other cations, it has good ion exchange ability. At present, it has been applied in more than 100 departments in 24 fields of industrial and agricultural production abroad, with more than 300 products, so it is called “universal soil”. Considering the characteristics of bentonite, bentonite has great market prospects in palm oil bleaching industry.

In the process of palm oil bleaching, bentonite needs to be processed into powder, the common powder is about 100 mesh to 200 mesh. The powder products processed to this degree can be realized by MTW Euro-type Trapezium mill. In 2018, Zenith company has exported to Panjiang, Indonesia, a set of MTW 138 bentonite grinding equipment. Because the customer’s bentonite feed is too large and considering the rainy weather in Indonesia, the front of crusher equipment mostly use the gear roll crushing equipment. Considering the processing properties of MTW Euro-type Trapezium mill, MTW is used for materials with hardness less than 7 and moisture less than 6%. Therefore, the problem of adding dryer should be considered in the production line of the whole mill. However, considering the need for bleaching in the food industry, Therefore, when configuring the dryer, we should avoid the contact between heating gas and bentonite, and consider configuring the three-drum dryer equipment. At that time, the customer required to process 200 mesh, and the output was about 8 tons. According to the customer’s requirements, the customer was equipped with a MTW 138 grinder equipment, but at the same time, But at the same time, we should pay attention to replace the front of jaw crusher with the teeth roll crusher, so that when broken, it will not bond. MTW series Euro-type Trapezium grinder is a new generation of grinding equipment with world advanced level. Based on the in-depth analysis of the structure and performance of the traditional grinder by the company’s experts, combined with the needs and suggestions of more than 9500 customers, the grinding equipment has been designed by dozens of R&D personnel. This series of grinders have many advantages that can’t be compared with traditional grinders, such as the use of bevel gear integral transmission, internal thin oil lubrication system, oil temperature online measurement and other advanced technologies in the world, while owning a number of independent patented technical property rights.

This series of grinder is suitable for grinding metallurgical, building materials, chemical industry, mining and other mineral materials. It can grind limestone, calcite, marble, talc, bentonite, barite, quartz, dolomite, gypsum and other non-flammable and explosive mineral materials with hardness below 9 and humidity below 6%.

The advantages of MTW Euro-type Trapezium mill compared with traditional mill.

1. Non-resistance and high wear-resisting inlet volute can effectively improve the efficiency of air supply in the grinding mill and reduce the cost of material maintenance. Circular arc duct, to avoid energy loss of air flow, to ensure transmission efficiency; high-strength protective plate, to protect the working face of the duct.

2. Innovative and practical labyrinth seal and other multi-seal design to ensure the performance of grinding rollers, while directly reducing equipment maintenance costs. Breakthrough application of new material of roll ring, durability is several times higher than that of traditional material.

3. Composite spade, only need to change the blade, reduce the cost of vulnerable parts; Surface design, change the throwing angle, extend the service life of the grinding ring, reduce operating costs.

4. The bevel gears are integrally driven, with high transmission efficiency, space saving and low investment cost.

5. Internal thin oil lubrication system can realize lubrication of main bearing and transmission bearing without additional oil pump, and reduce maintenance cost.

6. Overall popular design, exquisite appearance, reasonable internal, reduce airflow resistance and dust accumulation.

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