A procurement specification sheet covering chemical assays, Cr:Fe ratios, sizing tolerances, and FOB container loading.
For stainless steel manufacturers, ferrochrome smelters, and chemical processors, Muslim Bagh chromite represents one of the highest-grade, cost-effective chromium sources globally. For detailed technical data sheets, explore our dedicated Muslim Bagh Chromite Ore Specification Dossier.
Grade Integrity & Cr:Fe Ratios
The Muslim Bagh ophiolite complex in Qila Saifullah District has produced high-grade chromite since 1903. Chromite occurs as podiform and stratiform deposits hosted in dunite and harzburgite mantle rocks. What makes Muslim Bagh ore stand out on global commodity exchanges is its favorable Chromium-to-Iron (Cr:Fe) ratio, frequently reaching between 2.8:1 and 3.2:1. For detailed technical data sheets, buyers can explore our dedicated Muslim Bagh Chromite Ore Specification Dossier.
Smelters favor higher Cr:Fe ratios because they significantly reduce power consumption and fluxing agent requirements during electric arc furnace (EAF) ferrochrome production.
Standard Chemical Assays
Balochistan Minerals grades and stockpiles Muslim Bagh chromite into distinct commercial categories based on certified laboratory assay:
| Element / Oxide | High-Grade Lumps | Medium-Grade Lumps | Beneficiated Concentrate |
|---|---|---|---|
| Cr₂O₃ | 48.0% – 52.0% | 42.0% – 46.0% | 50.0% – 54.0% |
| FeO (Total Iron) | 13.0% – 15.5% | 15.0% – 18.0% | 12.5% – 14.5% |
| Cr : Fe Ratio | 2.8 : 1 – 3.2 : 1 | 2.4 : 1 – 2.7 : 1 | 3.0 : 1 – 3.4 : 1 |
| SiO₂ (Silica) | 3.5% Max | 5.5% Max | 2.5% Max |
| Al₂O₃ | 10.0% – 13.0% | 12.0% – 15.0% | 9.0% – 11.5% |
| Phosphorus (P) | 0.007% Max | 0.009% Max | 0.005% Max |
| Sulfur (S) | 0.015% Max | 0.025% Max | 0.010% Max |
Physical Sizing Options
Sizing consistency is vital to avoid bridging inside blast furnaces or excessive fines in the flue gas stream:
- Lumpy Ore: 10 mm – 150 mm (90% min within range). Under-sized fines (0–10 mm) strictly capped below 10%.
- Friable Ore: Naturally breakable high-grade pods for quick mechanical crushing.
- Fine Concentrate: 0.1 mm – 2 mm washed sand concentrate, processed using shaking tables and spiral separators for chemical and pelletizing applications.
Muslim Bagh Chromite Ore Specification Dossier
Certified Export GradeBalochistan Minerals provides certified metallurgical and refractory chromite lots directly from the Muslim Bagh ophiolite belt. Review certified laboratory assays, sizing sieve curves, and packing options.
Packaging & Shipping Terms
- Packaging: Dispatched loose in 20-foot heavy-duty shipping containers (26–28 MT per container) lined with high-strength tarpaulins, or packaged in 1.25–1.5 MT heavy woven polypropylene bulk bags.
- Testing: Each export batch is sampled in accordance with ISO 6153 standards. Certificates of Analysis (COA) issued by SGS Pakistan, Bureau Veritas, or Inspectorate.
- Incoterms: FOB Karachi Port Trust (KPT), FOB Port Qasim (PQM), or CFR/CIF main ports of China (Tianjin, Qingdao, Shanghai), South Korea (Busan), and Japan.
Frequently Asked Questions
What makes Muslim Bagh chromite suitable for high-carbon ferrochrome smelting?
Muslim Bagh chromite features a favorable Chromium-to-Iron (Cr:Fe) ratio of 2.8:1 to 3.2:1 with natural Cr₂O₃ concentrations ranging from 42% to 52%. Combined with ultra-low phosphorus (<0.007%) and low silica (<3.5%), this composition minimizes slag volume, lowers flux consumption, and reduces electrical energy requirements during submerged electric arc furnace (EAF) smelting.
What physical sizing tolerances are standard for containerized bulk chromite lumps?
Export lumpy chromite is screened to 10 mm – 150 mm sizing with a minimum of 90% meeting the dimensional specification. Under-sized fines (0–10 mm) are strictly capped below 10% to prevent burden packing and gas bridging inside ferroalloy reduction furnaces.
How is moisture determined and deducted in FOB/CFR export contracts?
Free moisture is determined by third-party surveyors (such as SGS or Alfred H Knight) during container stuffing by drying composite samples at 105°C in accordance with ISO 6153 standards. Invoiced dry commercial weight is adjusted by deducting the certified free moisture percentage from gross scale weight.
Which inspection agencies certify Muslim Bagh chromite at Karachi and Port Qasim?
Every export shipment is inspected by accredited international third-party inspection firms including SGS Pakistan, Alfred H Knight, Alex Stewart International, or Bureau Veritas. Inspectors verify chemical assay (XRF/wet chemistry), sizing distribution, moisture, and container seal integrity prior to issuance of final commercial Certificates of Analysis (COA).
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