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.
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.
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)
For ASTM E247 testing, the sample weight is taken as follows,
Content of Silica, %
Weight of Test Sample, g
Less than 2
2 and over
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.
ASTM E572 test method covers the analysis of stainless and alloy steels by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF). It provides rapid, multi-element determinations with sufficient accuracy to assure product quality.
The ASTM D2674 test is a standard test method for the analysis of sulfochromate etch solutions used in the surface preparation of aluminum. The ASTM D2674 standard specifies a method for determining the efficacy of an etchant used to prepare the surface of aluminum alloys for subsequent adhesive bonding.
An immunological method for quantization of Hevea Natural Rubber (HNRL) proteins using rabbit anti-HNRL serum. Rabbits immunized with HNRL proteins react to the majority of the proteins present, and their sera have the capability to detect most if not all the proteins in HNRL.
ASTM G65 measures the resistance of metallic materials to abrasion using the dry sand/rubber wheel apparatus. The quality, durability, and toughness of the sample are determined using this test. Metallic materials are ranked in their resistance to scratching abrasion under a controlled environment.
ASTM E2141 test methods provide accelerated aging and monitoring of the performance of time-dependent electrochromic devices (ECD) integrated in insulating glass units (IGU). This test helps to understand the relative serviceability of electrochromic glazings applied on ECD.
ASTM C724 test method is used in analyzing the quality and ease of maintenance of a ceramic decoration on architectural-type glass. This test method is useful in the acknowledgment of technical standards.
Send us a request
Process for testing
You share material and testing requirements with us
We ensure your sample pick-up in an ensured manner
We deliver test report to your inbox
Just share your testing requirements and leave the rest on us!
Free, no-obligation consultation
Quick turnaround time
Let us combine our capabilities to achieve success!!