Method and system for cleaning sand

A method of processing a sand product, comprising:

• adding water and the sand product to a first compartment of a process tank;
• mixing the water and the sand product in the first compartment to create a sand mixture;
• pumping the sand mixture from the first compartment to a first hydrocyclone;
• separating, in the first hydrocyclone, the sand mixture into wet sand and a clay mixture;
• receiving, from the first hydrocyclone, the wet sand and the clay mixture in a second compartment of the process tank;
• pumping the wet sand and the clay mixture from the second compartment to a second hydrocyclone;
• further separating, in the second hydrocyclone, the wet sand from the clay mixture to produce a clay product;
• and
• receiving, from the second hydrocyclone, the clay product in a third compartment of the process tank that is isolated from the first compartment and the second compartment.

A system for processing a sand product, comprising:

• a process tank comprising:
• a first compartment;
• a second compartment in fluid communication with the first compartment;
• and
• a third compartment that is isolated from the first compartment and the second compartment;
• a first hydrocyclone;
• a second hydrocyclone;
• a first pump;
• a second pump;
• and
• a controller configured to:
• operate the first pump to pump a sand mixture comprising the sand product and water from the first compartment to the first hydrocyclone such that a wet sand and a clay mixture flow from the first hydrocyclone into the second compartment;
• and
• operate the second pump to pump the wet sand and the clay mixture from the second compartment to the second hydrocyclone such that a clay product flows from the second hydrocyclone to the third compartment.