Cashew Shell Oil Machine

In the vast cashew nut industry, the nutritious cashew kernel is often valued, while the cashew shell is often considered waste.

The cashew shell, which accounts for approximately 20%-30% of the total weight of the cashew nut, contains a unique natural oil called cashew nut shell liquid (CNSL). Its components, including carboxols and anacardic acid, possess antiseptic, antioxidant, insulating, and biocidal properties. This oil has a wide range of industrial applications, including in the manufacture of coatings, brake pads, resins, pharmaceuticals, and even as a renewable energy source.

1. Crushing

Crushing the cashew shell into fine particles increases surface area, improves contact surface area, and enhances oil yield.

2. Heating

Heating softens the shell, promoting the release of oil and active ingredients.

3. Screw Pressing

The crushed and heated cashew shells are directly fed into the cashew shell oil machine, where the pressure inside the press chamber fully extracts the oil from the shell.

4. Filtration and Refining

After pressing in the cashew shell oil machine, cashew nut shell liquid (CNSL) can be left to settle naturally to produce pure, clean oil, or it can be filtered through plate and frame filtration to obtain clean oil. If necessary, the filtered oil can be refined to produce even higher-quality CNSL.

CNSL production brings economic benefits to cashew-producing countries (India, Vietnam, and Brazil), generating additional income for farmers and factories selling CNSL. Furthermore, the residue after cashew shell oil machine can be used as fertilizer or fuel, reducing landfill pressure. CNSL itself, as a bio-based raw material, can replace some petrochemical products and reduce carbon emissions.

The  cashew shell oil machine is not only a technological breakthrough but also a model for resource reuse. It transforms a once-neglected "waste" into a high-value-added product, fully realizing the value of the product. Furthermore, in today's pursuit of green development, it reminds us that nature's gifts are often hidden in the details, and technology is the key to unlocking their potential.

Our company, Zhengzhou Hongte Machinery Import & Export Co., Ltd., specializes in oil extraction. We boast a complete range of equipment, a professional technical team, an experienced engineering team, a patient and professional service team, and a stable logistics and transportation company. We provide one-stop service throughout the entire process, and can resolve any of your issues.

In cashew nut shell liquid (CNSL) extraction, the cashew shell oil machine is the imporant step..Our oil presses offer the following advantages:

1. Stable operation

Both screw and hydraulic oil presses are essential tools for extracting CNSL. We operate both types of oil presses, both of which operate smoothly and can operate continuously throughout the day.

2. High extraction efficiency

Screw oil presses rely on the internal screws and the inherent pressure to extract the oil. Hydraulic oil presses utilize hydraulic technology to extract the oil, resulting in strong compression, more complete oil extraction, and higher efficiency.

3. Energy and labor saving

Compared to other types of oil presses on the market, our oil presses can save approximately 40% in electricity consumption for the same output. About 60% of the manpower can reduce the operating costs of the enterprise.

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