Walnut shell abrasive is a natural, biodegradable abrasive widely used in a variety of industrial and commercial fields.
Features of walnut shell abrasive
Natural material: Walnut shell abrasive is made from the outer shell of walnuts, which is an environmentally friendly and non-toxic choice suitable for use in a variety of environments.
Hardness and strength: Walnut shell has a Mohs hardness of about 3.5, has good compressive properties, and can perform well under a variety of pH and temperature conditions.
Reusable: This abrasive is durable and can be recycled many times, reducing operating costs.
Non-toxic and harmless: Compared with traditional sand abrasives, walnut shell abrasives do not cause health problems such as silicosis.
Walnut shell abrasive has many significant advantages that make it popular in industrial and commercial applications.
Environmental protection: Walnut shell abrasive is a natural material that is biodegradable after treatment and does not pollute the environment, meeting the requirements of modern sustainable development.
Safety: Compared with traditional abrasives (such as quartz sand), walnut shell abrasive does not contain toxic substances and does not release harmful gases when used, making it safer for operators and the environment.

Good polishing effect:
Walnut shell abrasives excel in polishing and deburring, and can effectively remove dirt and oxide layers on the surface of workpieces without damaging the substrate.
Abrasion resistance and pressure resistance:
Walnut shell abrasives have good wear resistance and can withstand certain pressure, making them suitable for heavy industrial uses such as sandblasting and stone polishing.
Chemical stability:
Walnut shell abrasives show high stability in chemical environments such as acids and alkalis, are not easy to dissolve, and will not cause water quality deterioration, making them suitable for water treatment and filtration.
Versatility:
In addition to being used for polishing and sandblasting, walnut shell abrasives can also be used in water filtration, detergent formulations, and cosmetics, showing a wide range of application potential.
Particle uniformity:
Walnut shell abrasives are finely processed and have uniform particle size, which helps improve processing results and reduce potential damage to the surface of workpieces.
Application areas
Sandblasting cleaning: Walnut shell abrasives are often used in sandblasting operations, which can effectively remove coatings on the surfaces of buildings, cars, boats, and furniture without damaging the substrate.
Cleaning and polishing: Suitable for cleaning and polishing materials such as soft metals, fiberglass, wood, and plastics.
Filtering materials: Black walnut shells (Juglans negra) are often used in filtration operations in industries such as oil fields due to their hard properties, which can effectively separate oil and solid matter.
Cosmetics: As a natural abrasive, walnut shells are widely used in cosmetics, such as hand cleansers and scrubs, as a substitute for microbeads.
Restoration and maintenance: Walnut shell abrasives are also widely used in historical building restoration and commercial restoration projects.
Packaging and storage
Walnut shell abrasives are usually sold in packages of 50 pounds or larger and have a shelf life of more than one year when stored indoors. Due to its environmentally friendly characteristics, it is also regarded as a safe landscaping material.
In short, walnut shell abrasives are widely used in multiple industries due to their versatility, environmental protection and economic benefits.

Walnut shell abrasives perform well on different materials, mainly in the following aspects:
1. Metal materials
Polishing and deburring: Walnut shell abrasives are widely used for polishing and deburring metal surfaces, which can effectively remove oxide layers and dirt on metal surfaces without damaging the substrate. This makes it an ideal choice for processing metals such as aluminum, copper and stainless steel.
Sandblasting: In sandblasting operations, walnut shell abrasives provide good cleaning results and are suitable for removing old paint, rust, etc., and their low hardness effectively prevents damage to metal surfaces.
2. Plastics and resins
Surface treatment: Walnut shell abrasives perform well on the surface treatment of plastics and resins, cleaning and polishing without scratching the materials. Their flexibility and elasticity make them suitable for delicate plastic parts.
3. Electronic components
Removal of excess material: In the production of electronic products, walnut shell abrasives can be used to remove excess glue and other residues to ensure the cleanliness and normal function of electronic components.
4. Ceramics and glass
Porous materials: In ceramic bonded porous grinding wheels, walnut shell abrasives are used as pore-forming materials, which can improve the porosity and strength of the grinding wheel and show good processing performance.
5. Water purification
Filtration applications: Walnut shell abrasives are widely used in water purification fields, including oilfield wastewater treatment, due to their excellent pollution interception ability. It can effectively remove grease and suspended matter in water and improve filtration rate.