Method and device for measuring a quantity of active clay in a green casting sand

摘要

Method for measuring a quantity of active clay in a green casting sand based on the results of measuring the conductivity of a solution of green sand and water, characterised in that it measures, simultaneously, the value of the pH of the solution and in that, during these measurements, input signals are generated for a programmed calculator in order to produce an output signal correlating with the quantity of active clay contained in the solution. IMAGE