ASTM E247 Determination of Silica in Manganese Ores, Iron Ores, and Related Materials

The estimation of silica content in manganese ores, iron ores, and other such materials is done using the ASTM E247 standard test method. This method uses gravimetric analysis, which is a laboratory technique that uses the change in mass to calculate the amount or concentration of an analyte.

  • Average 30% Cost

  • 100% Confidentiality

  • Free, No-obligation

  • 100% Customer



    ASTM E247 standard method describes the procedure to utilize gravimetry for estimating silica composition. Silica content of iron ores, iron ore concentrates and agglomerates, and manganese ores can be determined using this test method. Materials analyzed have silica concentrations in the range of 0.5 to 15%. This test method is intended to be used for compliance with compositional specifications for silica content.

    Test procedure:

     In ASTM E247, the sample is fused with sodium peroxide in a zirconium crucible. The melt is leached with water and dissolved in hydrochloric acid. Silica is separated by double dehydration with perchloric acid. The two precipitates formed are combined, ignited, and weighed. The silica is volatilized by treatment with hydrofluoric and sulfuric acids and the residue is weighed.

    Video 01: Gravimetric analysis (Filtration)

    Specimen size:

    For ASTM E247 testing, the sample weight is taken as follows,

    Content of Silica, %Weight of Test Sample, g
    Less than 21.0
    2 and over0.5


    Calculate the percentage of silica as follows for ASTM E247 testing,


    A = silica in the test sample, g,

    B = silica in the blank, g, and

    C = test sample weight, g.


    ASTM E247 standard method describes the procedure to utilize gravimetry for estimating silica composition.


    Core Materials Testing Services


    A variety of microscopy and spectroscopy tools available for precise measurements from the nano to the meter scale.

    Metrology Testing Services POPULAR TESTS:

    TEM SIMS Profilometry

    Materials Testing

    ASTM and ISO standard and custom chemical, mechanical, thermal, corrosion tests, etc. for all materials metals, ceramic or polymers.

    Materials Testing Services POPULAR TESTS:

    Nondestructive Testing Electrical Testing Chemistry Analysis

    Product Testing

    Thousands of tests for product quality and reliability under heat, humidity, temperature shock, vibration, drop, electrostatic discharge.

    Product Testing Services POPULAR TESTS:

    Vibration Testing Humidity Testing Accelerated Aging

    Looking for Material Testing?

    We have already delivered 10000+ Material Test results to top companies

      Send us a request

        Process for testing
          STEP 01

          You share material and testing requirements with us

          STEP 02

          You ship your sample to us or arrange for us to pick it up.

          STEP 03

          We deliver the test report to your email.

          Let’s work together!

          Share your testing requirements with us and we will be happy to assist you.

          ddd Just share your testing requirements and leave the rest on us!
          • Free, no-obligation consultation
          • Guaranteed confidentiality
          • Quick turnaround time
          • Hassle-free process


            Let us combine our capabilities to achieve success!!

              idea icon
              Want to connect with an expert before you leave?