This note condenses the key information on antimony from the Indian Minerals Yearbook 2017 (Part II: Metals & Alloys). It covers the metal’s natural occurrence, domestic resource status, principal uses, world‑wide reserves and production, trade flows, and future demand drivers. The aim is to give you a quick‑reference sheet for exams and rapid revision.
Antimony Resources Summary in India
- Domestic reserves (as 1 Apr 2015)
- Total estimated 10 588 t of antimony ore (≈ 174 t of metal) – all inferred.
- Located in Lahaul & Spiti (Himachal Pradesh); minor occurrences reported in AP, J&K, Jharkhand, Karnataka, Uttarakhand.
- Primary ore – stibnite (Sb₂S₃, 71.4 % Sb). Other ores: jamesonite (Pb2Sb2S5) and senarmontite/valentinite (Sb2O3).
- Geochemical class – chalcophile: associates with sulfur and heavy metals (Pb, Cu, Ag).
Applications for Antimony
| Application | Typical Antimony Form | Key Role |
|---|---|---|
| Flame‑retardants | Antimony trioxide (Sb₂O₃) | Synergist with Br/Cl; ~55 % of global antimony demand |
| Lead‑acid batteries | Antimony alloyed with lead | Increases hardness & cycle life |
| Electronics & optics | Antimony sulfide (Sb₂S₃) | Infra‑red detector, diodes, acoustic devices |
| Safety matches | Antimony sulfide | Fuel component |
| Glass & ceramics | Antimony compounds | Decolourising & refining |
| Pharmaceuticals & cosmetics | Various Sb‑compounds | Specialized therapeutic agents |
Substitutes & Recycling
- Battery hardeners – tin, calcium, copper, selenium, cadmium, strontium, sulfur; low‑maintenance batteries now favour calcium.
- Flame‑retardant alternatives – organic inhibitors, hydrated aluminium oxide.
- Rubber & polymer substitutes – tellurium, selenium.
- Paint & pigment replacements – titanium, zinc, chromium, tin, zirconium compounds.
- Recycling – secondary antimony is mainly recovered as antimonial lead at lead‑smelters (largely re‑used in lead‑acid batteries).
World Reserves & Production
Global reserves (metal content) ≈ 1.5 million t; dominant countries:
| Country | Reserve (t) | Share |
|---|---|---|
| China | 480 000 | 32 % |
| Russia | 350 000 | 23 % |
| Bolivia | 310 000 | 21 % |
| Australia | 140 000 | 9 % |
| Turkey | 100 000 | 7 % |
| Others | ≤ 60 000 each | – |
2020 production capacity is predicted at around 143 000 t metal (down 1 % YoY). It is predicted that China will overtake around 75% of global supply output. In other regions, Tajikistan (8 %), Russia (5 %), and Australia (3 %).
India Exports & Imports of Antimony in 2016 – 2017
Exports from India
- Antimony ores & concentrates: 46 t (down from 264 t). Main destinations: USA (62 %), Pakistan (24 %).
- Antimony alloys & scrap: 1 668 t (down ~ 18 %).
- Unwrought powders: 1 667 t.
- Antimonial lead: 12 231 t (≈ 2‑fold increase).
Imports to India
- Ores & concentrates: 4 756 t (↓ 11 %). Suppliers: Tajikistan (55 %), Kazakhstan (34 %), Russia (6 %).
- Alloys & scrap: 864 t (↓ 25 %); mainly from China (83 %).
- Unwrought powders: 842 t.
Technical Possibilities & Recycling (Brief)
- Stabilisers for specialised plastics.
- High‑antimonial lead batteries for electric vehicles (deep‑cycle advantage).
- Semiconductor devices: night‑vision, space‑based astronomy, DVD manufacture.
Future Outlook
- Flame‑retardant sector drives ≈ 55 % of primary antimony demand; antimony trioxide accounts for ~ 90 % of global consumption.
- PET catalysts: antimony‑based catalysts dominate (~ 90 % usage).
- Emerging tech – Germanium‑antimony‑telluride Phase‑Change RAM (PRAM) chips, targeting mobile and camera markets.
- Battery market: recent lead‑acid innovations may reduce antimony use, offsetting growth elsewhere.
- Supply outlook – world reserves are ample; USGS projects modest consumption rise, especially from flame‑retardants, lead‑acid batteries, and Asian plastics.
Key Take‑aways
- India holds only inferred antimony resources (≈ 174 t metal) in Himachal Pradesh; no domestic production – all demand is met by imports.
- Flame‑retardants dominate global consumption; keep this sector in mind for demand‑side questions.
- China remains the strategic hub for both reserves and output; any geopolitics‑related scenario will likely centre on Chinese policy.
- Substitutes (calcium, organic retardants) are gaining market share – useful when evaluating sustainability or cost‑benefit analyses.