Overview
ISO 10058-1:2008 - Chemical analysis of magnesite and dolomite refractory products (alternative to the X‑ray fluorescence method) - Part 1: Apparatus, reagents, dissolution and determination of gravimetric silica - specifies the laboratory equipment, reagents, sample dissolution procedures and the gravimetric determination of silica (SiO2) for magnesite and dolomite refractory products and raw materials. It provides a wet‑chemical alternative to XRF for quality control and compositional analysis across defined ranges of determination.
Key topics and technical requirements
- Scope and applicability
- Targets chemical analysis of magnesite and dolomite refractory products and raw materials.
- Lists ranges of determination for major oxides (examples from Table 1): SiO2: 0.1–10%, MgO: 30–99.9%, CaO: 0.01–60%, and other oxides (Al2O3, Fe2O3, TiO2, etc.).
- Apparatus
- Normal laboratory glassware and equipment as referenced to ISO 26845 (general laboratory requirements for refractories).
- Reagents and standards
- Use of analytical‑grade reagents and water; conformity with ISO 6353 series.
- Preparation and verification of standard volumetric and stock solutions (e.g., Zn, EDTA, Al2O3, SiO2 standard solutions).
- Sample preparation and decomposition
- Procedures for sample preparation, loss on ignition (LOI) determination (gravimetric).
- Decomposition/dissolution methods including fusion techniques and hydrofluoric acid attack to prepare solutions for analysis.
- Gravimetric silica determination
- Detailed gravimetric procedure to quantify silica after appropriate dissolution and separation.
- Calculations, result expression and reporting
- Guidance for calculation, adoption of test results, and required content of the test report.
Practical applications and users
- Who uses ISO 10058-1:2008
- Refractory manufacturers, quality control (QC) laboratories, materials testing labs, and R&D teams working with magnesite and dolomite refractories.
- Regulatory and standards bodies needing validated wet‑chemical alternatives to XRF.
- Why it’s useful
- Provides a validated wet‑chemical workflow for accurate gravimetric silica results where XRF is unavailable or as a confirmatory method.
- Supports routine QC of raw materials and finished refractory products, troubleshooting of production issues, and specification compliance.
Related standards
- ISO 10058 (other parts): Part 2 - Wet chemical analysis; Part 3 - FAAS and ICP‑AES methods.
- ISO 26845 - Chemical analysis of refractories: general requirements for wet chemical, AAS and ICP‑AES methods.
- ISO 6353‑1/2/3 - Reagents for chemical analysis (general test methods and specifications).
Keywords: ISO 10058-1:2008, magnesite refractory, dolomite refractory, gravimetric silica, chemical analysis, apparatus, reagents, dissolution, fusion, hydrofluoric acid, LOI, wet chemical analysis.
Open preview (PDF)Chemical analysis of magnesite and dolomite refractory products (alternative to the X-ray fluorescence method) — Part 1: Apparatus, reagents, dissolution and determination of gravimetric silica