In the metal washing industry, walnut shell can be used as metal washing materials and metal polishing materials after treatment. For example, the aero engine, circuit board, steamer gearing and car gearing can be washed by treated walnut shell. After being broken up into fine particles, the walnut shell will have certain elasticity, restoring force and admitted weight, so the walnut shell can be used as abradant in the stream washing operation.

In the oil industry, it’s difficult for oil drilling and mining in the ruptured stratum and loose geology. In this case, it is possible to adopt walnut shell super fine powder to fill in as bridging agent, making sure the oil drilling and mining can be taken freely.

In the senior painting industry, after being processed, the walnut shell can be added into paint, making the paints have similar texture with plastic, whose performance is rather superior to normal paints. This kind of paints can be painted onto plastic, wallpaper, brick and wallboard to cover the cracks on them.

In the explosive industry, putting super fine walnut shell powder into the explosive with other additive can increase greatly the explosive power.

In the cosmetics industry, because walnut shell super fine powder is pure natural material without any toxic substances, walnut shell powder can be used as one type of coarse gritted additive agent in the soap, toothpaste and other skin care agents with excellent effect.

The processing methods of super fine grade walnut shell are as follows:

1.       Grinding medium crushing
The Grinding medium crushing is depending on the acting force between the walnut shell and moving medium breaks the walnut shell up into pieces. The typical equipment is ball crusher, mixing mill, etc. The walnut shell grain sizes processed by grinding medium crushing are a little bigger and uneven.

2.       Mechanical shearing super fine crushing

The mechanical shearing super fine crushing is normally applied to the processing of toughness materials and flexible materials.

3.       Airflow super fine crushing

The airflow super fine crushing uses supersonic airflow as the grits carrier, along with airflow movement, the grits collide with each other, achieving in the purpose of breaking up into pieces. The types of airflow super fine crushing includes flat type airflow super fine crushing, circulating pipe type airflow super fine crushing and injecting type airflow super fine crushing. The walnut shell grain sizes processed by airflow super fine crushing are even. And even more that the grits temperature rise is very low. According to the walnut shell characteristic, adopting airflow super fine crushing processes fine grade walnut shell powder is the ideal choice.

Now in the USA, there are already some manufacturers sell the super fine walnut shell powder. And we have confidence that the walnut shell marketing will be larger and larger in the future, even the value of walnut shell will exceed that of walnut kernels, along with the walnut shell is found out having more and more applications.