Stibnite concentrate is produced by froth flotation at the Sary-Bulak mill and at the Chatkal Antimony Processing Mill. Most of it is smelted at Chatkal. The remainder is sold to smelters, mainly in southern China, under long-term contracts.
Typical specification
| Parameter | Value |
|---|---|
| Sb, % | 55 to 60 |
| As, % not more than | 0.30 |
| Moisture, % not more than | 8 |
Supply
| Item | Details |
|---|---|
| Sold in concentrate (Sb contained) | 7,900 t (2025) |
| Packing | Bulk bags |
| Shipment | By rail through Kazakhstan, entering China at Dostyk to Alashankou |
Concentrate is sold to smelters under long-term contracts. See Sales and markets.